blob: e274bc6e1458abb5cba556d936187540024fddb7 [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>
Ingo Molnar3f07c012017-02-08 18:51:30 +010023#include <linux/sched/signal.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#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 Torvalds7c0f6ba2016-12-24 11:46:01 -080037#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#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);
Ralf Baechled496f782015-06-19 00:46:53 +0200195 if (rose->neighbour)
196 rose->neighbour->use--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 rose->device = NULL;
198 }
199 }
200 spin_unlock_bh(&rose_list_lock);
201}
202
203/*
204 * Handle device status changes.
205 */
Jiri Pirko351638e2013-05-28 01:30:21 +0000206static int rose_device_event(struct notifier_block *this,
207 unsigned long event, void *ptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208{
Jiri Pirko351638e2013-05-28 01:30:21 +0000209 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210
YOSHIFUJI Hideaki721499e2008-07-19 22:34:43 -0700211 if (!net_eq(dev_net(dev), &init_net))
Eric W. Biedermane9dc8652007-09-12 13:02:17 +0200212 return NOTIFY_DONE;
213
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 if (event != NETDEV_DOWN)
215 return NOTIFY_DONE;
216
217 switch (dev->type) {
218 case ARPHRD_ROSE:
219 rose_kill_by_device(dev);
220 break;
221 case ARPHRD_AX25:
222 rose_link_device_down(dev);
223 rose_rt_device_down(dev);
224 break;
225 }
226
227 return NOTIFY_DONE;
228}
229
230/*
231 * Add a socket to the bound sockets list.
232 */
233static void rose_insert_socket(struct sock *sk)
234{
235
236 spin_lock_bh(&rose_list_lock);
237 sk_add_node(sk, &rose_list);
238 spin_unlock_bh(&rose_list_lock);
239}
240
241/*
242 * Find a socket that wants to accept the Call Request we just
243 * received.
244 */
245static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
246{
247 struct sock *s;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
249 spin_lock_bh(&rose_list_lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800250 sk_for_each(s, &rose_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 struct rose_sock *rose = rose_sk(s);
252
253 if (!rosecmp(&rose->source_addr, addr) &&
254 !ax25cmp(&rose->source_call, call) &&
255 !rose->source_ndigis && s->sk_state == TCP_LISTEN)
256 goto found;
257 }
258
Sasha Levinb67bfe02013-02-27 17:06:00 -0800259 sk_for_each(s, &rose_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260 struct rose_sock *rose = rose_sk(s);
261
262 if (!rosecmp(&rose->source_addr, addr) &&
263 !ax25cmp(&rose->source_call, &null_ax25_address) &&
264 s->sk_state == TCP_LISTEN)
265 goto found;
266 }
267 s = NULL;
268found:
269 spin_unlock_bh(&rose_list_lock);
270 return s;
271}
272
273/*
274 * Find a connected ROSE socket given my LCI and device.
275 */
276struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
277{
278 struct sock *s;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
280 spin_lock_bh(&rose_list_lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800281 sk_for_each(s, &rose_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 struct rose_sock *rose = rose_sk(s);
283
284 if (rose->lci == lci && rose->neighbour == neigh)
285 goto found;
286 }
287 s = NULL;
288found:
289 spin_unlock_bh(&rose_list_lock);
290 return s;
291}
292
293/*
294 * Find a unique LCI for a given device.
295 */
296unsigned int rose_new_lci(struct rose_neigh *neigh)
297{
298 int lci;
299
300 if (neigh->dce_mode) {
301 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
302 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
303 return lci;
304 } else {
305 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
306 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
307 return lci;
308 }
309
310 return 0;
311}
312
313/*
314 * Deferred destroy.
315 */
316void rose_destroy_socket(struct sock *);
317
318/*
319 * Handler for deferred kills.
320 */
Kees Cook4966bab2017-10-16 17:28:47 -0700321static void rose_destroy_timer(struct timer_list *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322{
Kees Cook4966bab2017-10-16 17:28:47 -0700323 struct sock *sk = from_timer(sk, t, sk_timer);
324
325 rose_destroy_socket(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326}
327
328/*
329 * This is called from user mode and the timers. Thus it protects itself
330 * against interrupt users but doesn't worry about being called during
331 * work. Once it is removed from the queue no interrupt or bottom half
332 * will touch it and we are (fairly 8-) ) safe.
333 */
334void rose_destroy_socket(struct sock *sk)
335{
336 struct sk_buff *skb;
337
338 rose_remove_socket(sk);
339 rose_stop_heartbeat(sk);
340 rose_stop_idletimer(sk);
341 rose_stop_timer(sk);
342
343 rose_clear_queues(sk); /* Flush the queues */
344
345 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
346 if (skb->sk != sk) { /* A pending connection */
347 /* Queue the unaccepted socket for death */
348 sock_set_flag(skb->sk, SOCK_DEAD);
349 rose_start_heartbeat(skb->sk);
350 rose_sk(skb->sk)->state = ROSE_STATE_0;
351 }
352
353 kfree_skb(skb);
354 }
355
Eric Dumazetc5640392009-06-16 10:12:03 +0000356 if (sk_has_allocations(sk)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 /* Defer: outstanding buffers */
Kees Cook4966bab2017-10-16 17:28:47 -0700358 timer_setup(&sk->sk_timer, rose_destroy_timer, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 sk->sk_timer.expires = jiffies + 10 * HZ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 add_timer(&sk->sk_timer);
361 } else
362 sock_put(sk);
363}
364
365/*
366 * Handling for system calls applied via the various interfaces to a
367 * ROSE socket object.
368 */
369
370static int rose_setsockopt(struct socket *sock, int level, int optname,
David S. Millerb7058842009-09-30 16:12:20 -0700371 char __user *optval, unsigned int optlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372{
373 struct sock *sk = sock->sk;
374 struct rose_sock *rose = rose_sk(sk);
375 int opt;
376
377 if (level != SOL_ROSE)
378 return -ENOPROTOOPT;
379
380 if (optlen < sizeof(int))
381 return -EINVAL;
382
383 if (get_user(opt, (int __user *)optval))
384 return -EFAULT;
385
386 switch (optname) {
387 case ROSE_DEFER:
388 rose->defer = opt ? 1 : 0;
389 return 0;
390
391 case ROSE_T1:
392 if (opt < 1)
393 return -EINVAL;
394 rose->t1 = opt * HZ;
395 return 0;
396
397 case ROSE_T2:
398 if (opt < 1)
399 return -EINVAL;
400 rose->t2 = opt * HZ;
401 return 0;
402
403 case ROSE_T3:
404 if (opt < 1)
405 return -EINVAL;
406 rose->t3 = opt * HZ;
407 return 0;
408
409 case ROSE_HOLDBACK:
410 if (opt < 1)
411 return -EINVAL;
412 rose->hb = opt * HZ;
413 return 0;
414
415 case ROSE_IDLE:
416 if (opt < 0)
417 return -EINVAL;
418 rose->idle = opt * 60 * HZ;
419 return 0;
420
421 case ROSE_QBITINCL:
422 rose->qbitincl = opt ? 1 : 0;
423 return 0;
424
425 default:
426 return -ENOPROTOOPT;
427 }
428}
429
430static int rose_getsockopt(struct socket *sock, int level, int optname,
431 char __user *optval, int __user *optlen)
432{
433 struct sock *sk = sock->sk;
434 struct rose_sock *rose = rose_sk(sk);
435 int val = 0;
436 int len;
437
438 if (level != SOL_ROSE)
439 return -ENOPROTOOPT;
440
441 if (get_user(len, optlen))
442 return -EFAULT;
443
444 if (len < 0)
445 return -EINVAL;
446
447 switch (optname) {
448 case ROSE_DEFER:
449 val = rose->defer;
450 break;
451
452 case ROSE_T1:
453 val = rose->t1 / HZ;
454 break;
455
456 case ROSE_T2:
457 val = rose->t2 / HZ;
458 break;
459
460 case ROSE_T3:
461 val = rose->t3 / HZ;
462 break;
463
464 case ROSE_HOLDBACK:
465 val = rose->hb / HZ;
466 break;
467
468 case ROSE_IDLE:
469 val = rose->idle / (60 * HZ);
470 break;
471
472 case ROSE_QBITINCL:
473 val = rose->qbitincl;
474 break;
475
476 default:
477 return -ENOPROTOOPT;
478 }
479
480 len = min_t(unsigned int, len, sizeof(int));
481
482 if (put_user(len, optlen))
483 return -EFAULT;
484
485 return copy_to_user(optval, &val, len) ? -EFAULT : 0;
486}
487
488static int rose_listen(struct socket *sock, int backlog)
489{
490 struct sock *sk = sock->sk;
491
492 if (sk->sk_state != TCP_LISTEN) {
493 struct rose_sock *rose = rose_sk(sk);
494
495 rose->dest_ndigis = 0;
496 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
497 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
498 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
499 sk->sk_max_ack_backlog = backlog;
500 sk->sk_state = TCP_LISTEN;
501 return 0;
502 }
503
504 return -EOPNOTSUPP;
505}
506
507static struct proto rose_proto = {
508 .name = "ROSE",
509 .owner = THIS_MODULE,
510 .obj_size = sizeof(struct rose_sock),
511};
512
Eric Paris3f378b682009-11-05 22:18:14 -0800513static int rose_create(struct net *net, struct socket *sock, int protocol,
514 int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515{
516 struct sock *sk;
517 struct rose_sock *rose;
518
Octavian Purdila09ad9bc2009-11-25 15:14:13 -0800519 if (!net_eq(net, &init_net))
Eric W. Biederman1b8d7ae2007-10-08 23:24:22 -0700520 return -EAFNOSUPPORT;
521
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 if (sock->type != SOCK_SEQPACKET || protocol != 0)
523 return -ESOCKTNOSUPPORT;
524
Eric W. Biederman11aa9c22015-05-08 21:09:13 -0500525 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto, kern);
Pavel Emelyanov6257ff22007-11-01 00:39:31 -0700526 if (sk == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 return -ENOMEM;
528
529 rose = rose_sk(sk);
530
531 sock_init_data(sock, sk);
532
533 skb_queue_head_init(&rose->ack_queue);
534#ifdef M_BIT
535 skb_queue_head_init(&rose->frag_queue);
536 rose->fraglen = 0;
537#endif
538
539 sock->ops = &rose_proto_ops;
540 sk->sk_protocol = protocol;
541
Kees Cook4966bab2017-10-16 17:28:47 -0700542 timer_setup(&rose->timer, NULL, 0);
543 timer_setup(&rose->idletimer, NULL, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544
Ralf Baechle82e84242006-05-03 23:28:20 -0700545 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
546 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
547 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
548 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
549 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550
551 rose->state = ROSE_STATE_0;
552
553 return 0;
554}
555
556static struct sock *rose_make_new(struct sock *osk)
557{
558 struct sock *sk;
559 struct rose_sock *rose, *orose;
560
561 if (osk->sk_type != SOCK_SEQPACKET)
562 return NULL;
563
Eric W. Biederman11aa9c22015-05-08 21:09:13 -0500564 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto, 0);
Pavel Emelyanov6257ff22007-11-01 00:39:31 -0700565 if (sk == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 return NULL;
567
568 rose = rose_sk(sk);
569
570 sock_init_data(NULL, sk);
571
572 skb_queue_head_init(&rose->ack_queue);
573#ifdef M_BIT
574 skb_queue_head_init(&rose->frag_queue);
575 rose->fraglen = 0;
576#endif
577
578 sk->sk_type = osk->sk_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 sk->sk_priority = osk->sk_priority;
580 sk->sk_protocol = osk->sk_protocol;
581 sk->sk_rcvbuf = osk->sk_rcvbuf;
582 sk->sk_sndbuf = osk->sk_sndbuf;
583 sk->sk_state = TCP_ESTABLISHED;
Ralf Baechle53b924b2005-08-23 10:11:30 -0700584 sock_copy_flags(sk, osk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585
Kees Cook4966bab2017-10-16 17:28:47 -0700586 timer_setup(&rose->timer, NULL, 0);
587 timer_setup(&rose->idletimer, NULL, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588
589 orose = rose_sk(osk);
590 rose->t1 = orose->t1;
591 rose->t2 = orose->t2;
592 rose->t3 = orose->t3;
593 rose->hb = orose->hb;
594 rose->idle = orose->idle;
595 rose->defer = orose->defer;
596 rose->device = orose->device;
597 rose->qbitincl = orose->qbitincl;
598
599 return sk;
600}
601
602static int rose_release(struct socket *sock)
603{
604 struct sock *sk = sock->sk;
605 struct rose_sock *rose;
606
607 if (sk == NULL) return 0;
608
Jarek Poplawski49652912008-04-01 23:56:17 -0700609 sock_hold(sk);
610 sock_orphan(sk);
611 lock_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 rose = rose_sk(sk);
613
614 switch (rose->state) {
615 case ROSE_STATE_0:
Jarek Poplawski49652912008-04-01 23:56:17 -0700616 release_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 rose_disconnect(sk, 0, -1, -1);
Jarek Poplawski49652912008-04-01 23:56:17 -0700618 lock_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619 rose_destroy_socket(sk);
620 break;
621
622 case ROSE_STATE_2:
623 rose->neighbour->use--;
Jarek Poplawski49652912008-04-01 23:56:17 -0700624 release_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 rose_disconnect(sk, 0, -1, -1);
Jarek Poplawski49652912008-04-01 23:56:17 -0700626 lock_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627 rose_destroy_socket(sk);
628 break;
629
630 case ROSE_STATE_1:
631 case ROSE_STATE_3:
632 case ROSE_STATE_4:
633 case ROSE_STATE_5:
634 rose_clear_queues(sk);
635 rose_stop_idletimer(sk);
636 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
637 rose_start_t3timer(sk);
638 rose->state = ROSE_STATE_2;
639 sk->sk_state = TCP_CLOSE;
640 sk->sk_shutdown |= SEND_SHUTDOWN;
641 sk->sk_state_change(sk);
642 sock_set_flag(sk, SOCK_DEAD);
643 sock_set_flag(sk, SOCK_DESTROY);
644 break;
645
646 default:
647 break;
648 }
649
650 sock->sk = NULL;
Jarek Poplawski49652912008-04-01 23:56:17 -0700651 release_sock(sk);
652 sock_put(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653
654 return 0;
655}
656
657static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
658{
659 struct sock *sk = sock->sk;
660 struct rose_sock *rose = rose_sk(sk);
661 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
662 struct net_device *dev;
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700663 ax25_address *source;
664 ax25_uid_assoc *user;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 int n;
666
667 if (!sock_flag(sk, SOCK_ZAPPED))
668 return -EINVAL;
669
670 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
671 return -EINVAL;
672
673 if (addr->srose_family != AF_ROSE)
674 return -EINVAL;
675
676 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
677 return -EINVAL;
678
David S. Miller9828e6e2010-09-20 15:40:35 -0700679 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 return -EINVAL;
681
Ralf Baechle8849b722011-04-14 00:20:07 -0700682 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683 return -EADDRNOTAVAIL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684
685 source = &addr->srose_call;
686
David Howellsc2a2b8d2008-11-14 10:39:08 +1100687 user = ax25_findbyuid(current_euid());
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700688 if (user) {
689 rose->source_call = user->call;
690 ax25_uid_put(user);
691 } else {
YueHaibing3b9c9f32019-02-19 16:06:22 +0800692 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) {
693 dev_put(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 return -EACCES;
YueHaibing3b9c9f32019-02-19 16:06:22 +0800695 }
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700696 rose->source_call = *source;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 }
698
699 rose->source_addr = addr->srose_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 rose->device = dev;
701 rose->source_ndigis = addr->srose_ndigis;
702
703 if (addr_len == sizeof(struct full_sockaddr_rose)) {
704 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
705 for (n = 0 ; n < addr->srose_ndigis ; n++)
706 rose->source_digis[n] = full_addr->srose_digis[n];
707 } else {
708 if (rose->source_ndigis == 1) {
709 rose->source_digis[0] = addr->srose_digi;
710 }
711 }
712
713 rose_insert_socket(sk);
714
715 sock_reset_flag(sk, SOCK_ZAPPED);
Ralf Baechle8849b722011-04-14 00:20:07 -0700716
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 return 0;
718}
719
720static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
721{
722 struct sock *sk = sock->sk;
723 struct rose_sock *rose = rose_sk(sk);
724 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
725 unsigned char cause, diagnostic;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 struct net_device *dev;
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700727 ax25_uid_assoc *user;
Ralf Baechle2536b942007-03-12 15:53:33 -0700728 int n, err = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729
730 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
731 return -EINVAL;
732
733 if (addr->srose_family != AF_ROSE)
734 return -EINVAL;
735
736 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
737 return -EINVAL;
738
David S. Miller9828e6e2010-09-20 15:40:35 -0700739 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740 return -EINVAL;
741
742 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
743 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
744 return -EINVAL;
745
Ralf Baechle2536b942007-03-12 15:53:33 -0700746 lock_sock(sk);
747
748 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
749 /* Connect completed during a ERESTARTSYS event */
750 sock->state = SS_CONNECTED;
751 goto out_release;
752 }
753
754 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
755 sock->state = SS_UNCONNECTED;
756 err = -ECONNREFUSED;
757 goto out_release;
758 }
759
760 if (sk->sk_state == TCP_ESTABLISHED) {
761 /* No reconnect on a seqpacket socket */
762 err = -EISCONN;
763 goto out_release;
764 }
765
766 sk->sk_state = TCP_CLOSE;
767 sock->state = SS_UNCONNECTED;
768
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
Bernard Pidouxfe2c8022008-06-17 17:08:32 -0700770 &diagnostic, 0);
Bernard Pidoux43837b12008-04-19 18:41:51 -0700771 if (!rose->neighbour) {
772 err = -ENETUNREACH;
773 goto out_release;
774 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775
776 rose->lci = rose_new_lci(rose->neighbour);
Ralf Baechle2536b942007-03-12 15:53:33 -0700777 if (!rose->lci) {
778 err = -ENETUNREACH;
779 goto out_release;
780 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781
782 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
783 sock_reset_flag(sk, SOCK_ZAPPED);
784
Ralf Baechle2536b942007-03-12 15:53:33 -0700785 if ((dev = rose_dev_first()) == NULL) {
786 err = -ENETUNREACH;
787 goto out_release;
788 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789
David Howellsc2a2b8d2008-11-14 10:39:08 +1100790 user = ax25_findbyuid(current_euid());
Ralf Baechle2536b942007-03-12 15:53:33 -0700791 if (!user) {
792 err = -EINVAL;
793 goto out_release;
794 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795
796 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700797 rose->source_call = user->call;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 rose->device = dev;
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700799 ax25_uid_put(user);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800
801 rose_insert_socket(sk); /* Finish the bind */
802 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 rose->dest_addr = addr->srose_addr;
804 rose->dest_call = addr->srose_call;
805 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
806 rose->dest_ndigis = addr->srose_ndigis;
807
808 if (addr_len == sizeof(struct full_sockaddr_rose)) {
809 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
810 for (n = 0 ; n < addr->srose_ndigis ; n++)
811 rose->dest_digis[n] = full_addr->srose_digis[n];
812 } else {
813 if (rose->dest_ndigis == 1) {
814 rose->dest_digis[0] = addr->srose_digi;
815 }
816 }
817
818 /* Move to connecting socket, start sending Connect Requests */
819 sock->state = SS_CONNECTING;
820 sk->sk_state = TCP_SYN_SENT;
821
822 rose->state = ROSE_STATE_1;
823
824 rose->neighbour->use++;
825
826 rose_write_internal(sk, ROSE_CALL_REQUEST);
827 rose_start_heartbeat(sk);
828 rose_start_t1timer(sk);
829
830 /* Now the loop */
Ralf Baechle2536b942007-03-12 15:53:33 -0700831 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
832 err = -EINPROGRESS;
833 goto out_release;
834 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835
836 /*
837 * A Connect Ack with Choke or timeout or failed routing will go to
838 * closed.
839 */
840 if (sk->sk_state == TCP_SYN_SENT) {
Ralf Baechle75606dc2007-04-20 16:06:45 -0700841 DEFINE_WAIT(wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 for (;;) {
Eric Dumazetaa395142010-04-20 13:03:51 +0000844 prepare_to_wait(sk_sleep(sk), &wait,
YOSHIFUJI Hideaki6140efb2007-07-19 10:44:40 +0900845 TASK_INTERRUPTIBLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846 if (sk->sk_state != TCP_SYN_SENT)
847 break;
Ralf Baechle75606dc2007-04-20 16:06:45 -0700848 if (!signal_pending(current)) {
849 release_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850 schedule();
Ralf Baechle2536b942007-03-12 15:53:33 -0700851 lock_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852 continue;
853 }
Ralf Baechle75606dc2007-04-20 16:06:45 -0700854 err = -ERESTARTSYS;
855 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856 }
Eric Dumazetaa395142010-04-20 13:03:51 +0000857 finish_wait(sk_sleep(sk), &wait);
Ralf Baechle75606dc2007-04-20 16:06:45 -0700858
859 if (err)
860 goto out_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861 }
862
863 if (sk->sk_state != TCP_ESTABLISHED) {
864 sock->state = SS_UNCONNECTED;
Ralf Baechle2536b942007-03-12 15:53:33 -0700865 err = sock_error(sk); /* Always set at this point */
866 goto out_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867 }
868
869 sock->state = SS_CONNECTED;
870
Ralf Baechle2536b942007-03-12 15:53:33 -0700871out_release:
872 release_sock(sk);
873
874 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875}
876
David Howellscdfbabf2017-03-09 08:09:05 +0000877static int rose_accept(struct socket *sock, struct socket *newsock, int flags,
878 bool kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880 struct sk_buff *skb;
881 struct sock *newsk;
Ralf Baechle75606dc2007-04-20 16:06:45 -0700882 DEFINE_WAIT(wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883 struct sock *sk;
884 int err = 0;
885
886 if ((sk = sock->sk) == NULL)
887 return -EINVAL;
888
889 lock_sock(sk);
890 if (sk->sk_type != SOCK_SEQPACKET) {
891 err = -EOPNOTSUPP;
Ralf Baechle75606dc2007-04-20 16:06:45 -0700892 goto out_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 }
894
895 if (sk->sk_state != TCP_LISTEN) {
896 err = -EINVAL;
Ralf Baechle75606dc2007-04-20 16:06:45 -0700897 goto out_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 }
899
900 /*
901 * The write queue this time is holding sockets ready to use
902 * hooked into the SABM we saved
903 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904 for (;;) {
Eric Dumazetaa395142010-04-20 13:03:51 +0000905 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
Ralf Baechle75606dc2007-04-20 16:06:45 -0700906
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907 skb = skb_dequeue(&sk->sk_receive_queue);
908 if (skb)
909 break;
910
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911 if (flags & O_NONBLOCK) {
Ralf Baechle75606dc2007-04-20 16:06:45 -0700912 err = -EWOULDBLOCK;
913 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 }
Ralf Baechle75606dc2007-04-20 16:06:45 -0700915 if (!signal_pending(current)) {
916 release_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917 schedule();
918 lock_sock(sk);
919 continue;
920 }
Ralf Baechle75606dc2007-04-20 16:06:45 -0700921 err = -ERESTARTSYS;
922 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 }
Eric Dumazetaa395142010-04-20 13:03:51 +0000924 finish_wait(sk_sleep(sk), &wait);
Ralf Baechle75606dc2007-04-20 16:06:45 -0700925 if (err)
926 goto out_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927
928 newsk = skb->sk;
David S. Miller44ccff12008-06-17 02:39:21 -0700929 sock_graft(newsk, newsock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930
931 /* Now attach up the new socket */
932 skb->sk = NULL;
933 kfree_skb(skb);
934 sk->sk_ack_backlog--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935
Ralf Baechle75606dc2007-04-20 16:06:45 -0700936out_release:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937 release_sock(sk);
938
939 return err;
940}
941
942static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
Denys Vlasenko9b2c45d2018-02-12 20:00:20 +0100943 int peer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944{
945 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
946 struct sock *sk = sock->sk;
947 struct rose_sock *rose = rose_sk(sk);
948 int n;
949
Eric Dumazet17ac2e92009-08-06 03:34:06 +0000950 memset(srose, 0, sizeof(*srose));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951 if (peer != 0) {
952 if (sk->sk_state != TCP_ESTABLISHED)
953 return -ENOTCONN;
954 srose->srose_family = AF_ROSE;
955 srose->srose_addr = rose->dest_addr;
956 srose->srose_call = rose->dest_call;
957 srose->srose_ndigis = rose->dest_ndigis;
958 for (n = 0; n < rose->dest_ndigis; n++)
959 srose->srose_digis[n] = rose->dest_digis[n];
960 } else {
961 srose->srose_family = AF_ROSE;
962 srose->srose_addr = rose->source_addr;
963 srose->srose_call = rose->source_call;
964 srose->srose_ndigis = rose->source_ndigis;
965 for (n = 0; n < rose->source_ndigis; n++)
966 srose->srose_digis[n] = rose->source_digis[n];
967 }
968
Denys Vlasenko9b2c45d2018-02-12 20:00:20 +0100969 return sizeof(struct full_sockaddr_rose);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970}
971
972int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
973{
974 struct sock *sk;
975 struct sock *make;
976 struct rose_sock *make_rose;
977 struct rose_facilities_struct facilities;
Ben Hutchingse0bccd32011-03-20 06:48:05 +0000978 int n;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979
980 skb->sk = NULL; /* Initially we don't know who it's for */
981
982 /*
983 * skb->data points to the rose frame start
984 */
985 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
986
Ben Hutchingse0bccd32011-03-20 06:48:05 +0000987 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF,
988 skb->len - ROSE_CALL_REQ_FACILITIES_OFF,
989 &facilities)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
991 return 0;
992 }
993
994 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
995
996 /*
997 * We can't accept the Call Request.
998 */
999 if (sk == NULL || sk_acceptq_is_full(sk) ||
1000 (make = rose_make_new(sk)) == NULL) {
1001 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
1002 return 0;
1003 }
1004
1005 skb->sk = make;
1006 make->sk_state = TCP_ESTABLISHED;
1007 make_rose = rose_sk(make);
1008
1009 make_rose->lci = lci;
1010 make_rose->dest_addr = facilities.dest_addr;
1011 make_rose->dest_call = facilities.dest_call;
1012 make_rose->dest_ndigis = facilities.dest_ndigis;
1013 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1014 make_rose->dest_digis[n] = facilities.dest_digis[n];
1015 make_rose->source_addr = facilities.source_addr;
1016 make_rose->source_call = facilities.source_call;
1017 make_rose->source_ndigis = facilities.source_ndigis;
1018 for (n = 0 ; n < facilities.source_ndigis ; n++)
Weilong Chendb34de92013-12-19 11:55:17 +08001019 make_rose->source_digis[n] = facilities.source_digis[n];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020 make_rose->neighbour = neigh;
1021 make_rose->device = dev;
1022 make_rose->facilities = facilities;
1023
1024 make_rose->neighbour->use++;
1025
1026 if (rose_sk(sk)->defer) {
1027 make_rose->state = ROSE_STATE_5;
1028 } else {
1029 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1030 make_rose->state = ROSE_STATE_3;
1031 rose_start_idletimer(make);
1032 }
1033
1034 make_rose->condition = 0x00;
1035 make_rose->vs = 0;
1036 make_rose->va = 0;
1037 make_rose->vr = 0;
1038 make_rose->vl = 0;
1039 sk->sk_ack_backlog++;
1040
1041 rose_insert_socket(make);
1042
1043 skb_queue_head(&sk->sk_receive_queue, skb);
1044
1045 rose_start_heartbeat(make);
1046
1047 if (!sock_flag(sk, SOCK_DEAD))
David S. Miller676d2362014-04-11 16:15:36 -04001048 sk->sk_data_ready(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001049
1050 return 1;
1051}
1052
Ying Xue1b784142015-03-02 15:37:48 +08001053static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054{
1055 struct sock *sk = sock->sk;
1056 struct rose_sock *rose = rose_sk(sk);
Steffen Hurrle342dfc32014-01-17 22:53:15 +01001057 DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, msg->msg_name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058 int err;
1059 struct full_sockaddr_rose srose;
1060 struct sk_buff *skb;
1061 unsigned char *asmptr;
1062 int n, size, qbit = 0;
1063
1064 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1065 return -EINVAL;
1066
1067 if (sock_flag(sk, SOCK_ZAPPED))
1068 return -EADDRNOTAVAIL;
1069
1070 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1071 send_sig(SIGPIPE, current, 0);
1072 return -EPIPE;
1073 }
1074
1075 if (rose->neighbour == NULL || rose->device == NULL)
1076 return -ENETUNREACH;
1077
1078 if (usrose != NULL) {
1079 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1080 return -EINVAL;
1081 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1082 memcpy(&srose, usrose, msg->msg_namelen);
1083 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1084 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1085 return -EISCONN;
1086 if (srose.srose_ndigis != rose->dest_ndigis)
1087 return -EISCONN;
1088 if (srose.srose_ndigis == rose->dest_ndigis) {
1089 for (n = 0 ; n < srose.srose_ndigis ; n++)
1090 if (ax25cmp(&rose->dest_digis[n],
1091 &srose.srose_digis[n]))
1092 return -EISCONN;
1093 }
1094 if (srose.srose_family != AF_ROSE)
1095 return -EINVAL;
1096 } else {
1097 if (sk->sk_state != TCP_ESTABLISHED)
1098 return -ENOTCONN;
1099
1100 srose.srose_family = AF_ROSE;
1101 srose.srose_addr = rose->dest_addr;
1102 srose.srose_call = rose->dest_call;
1103 srose.srose_ndigis = rose->dest_ndigis;
1104 for (n = 0 ; n < rose->dest_ndigis ; n++)
1105 srose.srose_digis[n] = rose->dest_digis[n];
1106 }
1107
Linus Torvalds1da177e2005-04-16 15:20:36 -07001108 /* Build a packet */
Alan Cox83e0bbc2009-03-27 00:28:21 -07001109 /* Sanity check the packet size */
1110 if (len > 65535)
1111 return -EMSGSIZE;
1112
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1114
1115 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1116 return err;
1117
1118 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1119
1120 /*
1121 * Put the data on the end
1122 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123
Arnaldo Carvalho de Meloeeeb0372007-03-14 21:04:34 -03001124 skb_reset_transport_header(skb);
1125 skb_put(skb, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126
Al Viro6ce8e9c2014-04-06 21:25:44 -04001127 err = memcpy_from_msg(skb_transport_header(skb), msg, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128 if (err) {
1129 kfree_skb(skb);
1130 return err;
1131 }
1132
1133 /*
1134 * If the Q BIT Include socket option is in force, the first
1135 * byte of the user data is the logical value of the Q Bit.
1136 */
1137 if (rose->qbitincl) {
1138 qbit = skb->data[0];
1139 skb_pull(skb, 1);
1140 }
1141
1142 /*
1143 * Push down the ROSE header
1144 */
1145 asmptr = skb_push(skb, ROSE_MIN_LEN);
1146
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147 /* Build a ROSE Network header */
1148 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1149 asmptr[1] = (rose->lci >> 0) & 0xFF;
1150 asmptr[2] = ROSE_DATA;
1151
1152 if (qbit)
1153 asmptr[0] |= ROSE_Q_BIT;
1154
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155 if (sk->sk_state != TCP_ESTABLISHED) {
1156 kfree_skb(skb);
1157 return -ENOTCONN;
1158 }
1159
1160#ifdef M_BIT
1161#define ROSE_PACLEN (256-ROSE_MIN_LEN)
1162 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1163 unsigned char header[ROSE_MIN_LEN];
1164 struct sk_buff *skbn;
1165 int frontlen;
1166 int lg;
1167
1168 /* Save a copy of the Header */
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -03001169 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170 skb_pull(skb, ROSE_MIN_LEN);
1171
1172 frontlen = skb_headroom(skb);
1173
1174 while (skb->len > 0) {
1175 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1176 kfree_skb(skb);
1177 return err;
1178 }
1179
1180 skbn->sk = sk;
1181 skbn->free = 1;
1182 skbn->arp = 1;
1183
1184 skb_reserve(skbn, frontlen);
1185
1186 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1187
1188 /* Copy the user data */
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -03001189 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001190 skb_pull(skb, lg);
1191
1192 /* Duplicate the Header */
1193 skb_push(skbn, ROSE_MIN_LEN);
Arnaldo Carvalho de Melo27d7ff42007-03-31 11:55:19 -03001194 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195
1196 if (skb->len > 0)
1197 skbn->data[2] |= M_BIT;
1198
1199 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1200 }
1201
1202 skb->free = 1;
1203 kfree_skb(skb);
1204 } else {
1205 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1206 }
1207#else
1208 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1209#endif
1210
1211 rose_kick(sk);
1212
1213 return len;
1214}
1215
1216
Ying Xue1b784142015-03-02 15:37:48 +08001217static int rose_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
1218 int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001219{
1220 struct sock *sk = sock->sk;
1221 struct rose_sock *rose = rose_sk(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222 size_t copied;
1223 unsigned char *asmptr;
1224 struct sk_buff *skb;
1225 int n, er, qbit;
1226
1227 /*
1228 * This works for seqpacket too. The receiver has ordered the queue for
1229 * us! We do one quick check first though
1230 */
1231 if (sk->sk_state != TCP_ESTABLISHED)
1232 return -ENOTCONN;
1233
1234 /* Now we can treat all alike */
1235 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1236 return er;
1237
1238 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1239
1240 skb_pull(skb, ROSE_MIN_LEN);
1241
1242 if (rose->qbitincl) {
1243 asmptr = skb_push(skb, 1);
1244 *asmptr = qbit;
1245 }
1246
Arnaldo Carvalho de Melobadff6d2007-03-13 13:06:52 -03001247 skb_reset_transport_header(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248 copied = skb->len;
1249
1250 if (copied > size) {
1251 copied = size;
1252 msg->msg_flags |= MSG_TRUNC;
1253 }
1254
David S. Miller51f3d022014-11-05 16:46:40 -05001255 skb_copy_datagram_msg(skb, 0, msg, copied);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256
Hannes Frederic Sowaf3d33422013-11-21 03:14:22 +01001257 if (msg->msg_name) {
1258 struct sockaddr_rose *srose;
Steffen Hurrle342dfc32014-01-17 22:53:15 +01001259 DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose,
1260 msg->msg_name);
Hannes Frederic Sowaf3d33422013-11-21 03:14:22 +01001261
1262 memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose));
1263 srose = msg->msg_name;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264 srose->srose_family = AF_ROSE;
1265 srose->srose_addr = rose->dest_addr;
1266 srose->srose_call = rose->dest_call;
1267 srose->srose_ndigis = rose->dest_ndigis;
Florian Westphalf81152e2013-12-23 00:32:31 +01001268 for (n = 0 ; n < rose->dest_ndigis ; n++)
1269 full_srose->srose_digis[n] = rose->dest_digis[n];
1270 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271 }
1272
1273 skb_free_datagram(sk, skb);
1274
1275 return copied;
1276}
1277
1278
1279static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1280{
1281 struct sock *sk = sock->sk;
1282 struct rose_sock *rose = rose_sk(sk);
1283 void __user *argp = (void __user *)arg;
1284
1285 switch (cmd) {
1286 case TIOCOUTQ: {
1287 long amount;
Eric Dumazet31e6d362009-06-17 19:05:41 -07001288
1289 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001290 if (amount < 0)
1291 amount = 0;
Ralf Baechle20b7d102005-09-12 14:24:55 -07001292 return put_user(amount, (unsigned int __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001293 }
1294
1295 case TIOCINQ: {
1296 struct sk_buff *skb;
1297 long amount = 0L;
1298 /* These two are safe on a single CPU system as only user tasks fiddle here */
1299 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1300 amount = skb->len;
Ralf Baechle20b7d102005-09-12 14:24:55 -07001301 return put_user(amount, (unsigned int __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302 }
1303
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304 case SIOCGIFADDR:
1305 case SIOCSIFADDR:
1306 case SIOCGIFDSTADDR:
1307 case SIOCSIFDSTADDR:
1308 case SIOCGIFBRDADDR:
1309 case SIOCSIFBRDADDR:
1310 case SIOCGIFNETMASK:
1311 case SIOCSIFNETMASK:
1312 case SIOCGIFMETRIC:
1313 case SIOCSIFMETRIC:
1314 return -EINVAL;
1315
1316 case SIOCADDRT:
1317 case SIOCDELRT:
1318 case SIOCRSCLRRT:
1319 if (!capable(CAP_NET_ADMIN))
1320 return -EPERM;
1321 return rose_rt_ioctl(cmd, argp);
1322
1323 case SIOCRSGCAUSE: {
1324 struct rose_cause_struct rose_cause;
1325 rose_cause.cause = rose->cause;
1326 rose_cause.diagnostic = rose->diagnostic;
1327 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1328 }
1329
1330 case SIOCRSSCAUSE: {
1331 struct rose_cause_struct rose_cause;
1332 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1333 return -EFAULT;
1334 rose->cause = rose_cause.cause;
1335 rose->diagnostic = rose_cause.diagnostic;
1336 return 0;
1337 }
1338
1339 case SIOCRSSL2CALL:
1340 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1341 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1342 ax25_listen_release(&rose_callsign, NULL);
1343 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1344 return -EFAULT;
1345 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
Ralf Baechle81dcd162006-12-14 15:50:34 -08001346 return ax25_listen_register(&rose_callsign, NULL);
1347
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348 return 0;
1349
1350 case SIOCRSGL2CALL:
1351 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1352
1353 case SIOCRSACCEPT:
1354 if (rose->state == ROSE_STATE_5) {
1355 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1356 rose_start_idletimer(sk);
1357 rose->condition = 0x00;
1358 rose->vs = 0;
1359 rose->va = 0;
1360 rose->vr = 0;
1361 rose->vl = 0;
1362 rose->state = ROSE_STATE_3;
1363 }
1364 return 0;
1365
1366 default:
Christoph Hellwigb5e5fa52006-01-03 14:18:33 -08001367 return -ENOIOCTLCMD;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368 }
1369
1370 return 0;
1371}
1372
1373#ifdef CONFIG_PROC_FS
1374static void *rose_info_start(struct seq_file *seq, loff_t *pos)
Eric Dumazet95b7d922008-01-15 03:30:35 -08001375 __acquires(rose_list_lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001377 spin_lock_bh(&rose_list_lock);
Li Zefanb9997482010-02-08 23:19:17 +00001378 return seq_hlist_start_head(&rose_list, *pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001379}
1380
1381static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1382{
Li Zefanb9997482010-02-08 23:19:17 +00001383 return seq_hlist_next(v, &rose_list, pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001384}
YOSHIFUJI Hideaki3dcf7c52007-02-09 23:25:12 +09001385
Linus Torvalds1da177e2005-04-16 15:20:36 -07001386static void rose_info_stop(struct seq_file *seq, void *v)
Eric Dumazet95b7d922008-01-15 03:30:35 -08001387 __releases(rose_list_lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001388{
1389 spin_unlock_bh(&rose_list_lock);
1390}
1391
1392static int rose_info_show(struct seq_file *seq, void *v)
1393{
Ralf Baechledcf777f2009-07-26 19:11:14 -07001394 char buf[11], rsbuf[11];
Ralf Baechlef75268c2005-09-06 15:49:39 -07001395
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396 if (v == SEQ_START_TOKEN)
YOSHIFUJI Hideaki3dcf7c52007-02-09 23:25:12 +09001397 seq_puts(seq,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001398 "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");
1399
1400 else {
Li Zefanb9997482010-02-08 23:19:17 +00001401 struct sock *s = sk_entry(v);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402 struct rose_sock *rose = rose_sk(s);
1403 const char *devname, *callsign;
1404 const struct net_device *dev = rose->device;
1405
1406 if (!dev)
1407 devname = "???";
1408 else
1409 devname = dev->name;
YOSHIFUJI Hideaki3dcf7c52007-02-09 23:25:12 +09001410
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 seq_printf(seq, "%-10s %-9s ",
Ralf Baechledcf777f2009-07-26 19:11:14 -07001412 rose2asc(rsbuf, &rose->dest_addr),
1413 ax2asc(buf, &rose->dest_call));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001414
1415 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1416 callsign = "??????-?";
1417 else
Ralf Baechlef75268c2005-09-06 15:49:39 -07001418 callsign = ax2asc(buf, &rose->source_call);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419
1420 seq_printf(seq,
1421 "%-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 -07001422 rose2asc(rsbuf, &rose->source_addr),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423 callsign,
1424 devname,
1425 rose->lci & 0x0FFF,
1426 (rose->neighbour) ? rose->neighbour->number : 0,
1427 rose->state,
1428 rose->vs,
1429 rose->vr,
1430 rose->va,
1431 ax25_display_timer(&rose->timer) / HZ,
1432 rose->t1 / HZ,
1433 rose->t2 / HZ,
1434 rose->t3 / HZ,
1435 rose->hb / HZ,
1436 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1437 rose->idle / (60 * HZ),
Eric Dumazet31e6d362009-06-17 19:05:41 -07001438 sk_wmem_alloc_get(s),
1439 sk_rmem_alloc_get(s),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1441 }
1442
1443 return 0;
1444}
1445
Philippe De Muyter56b3d972007-07-10 23:07:31 -07001446static const struct seq_operations rose_info_seqops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447 .start = rose_info_start,
1448 .next = rose_info_next,
1449 .stop = rose_info_stop,
1450 .show = rose_info_show,
1451};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001452#endif /* CONFIG_PROC_FS */
1453
Stephen Hemmingerec1b4cf2009-10-05 05:58:39 +00001454static const struct net_proto_family rose_family_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455 .family = PF_ROSE,
1456 .create = rose_create,
1457 .owner = THIS_MODULE,
1458};
1459
Alexey Dobriyan5708e862009-09-14 12:23:23 +00001460static const struct proto_ops rose_proto_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461 .family = PF_ROSE,
1462 .owner = THIS_MODULE,
1463 .release = rose_release,
1464 .bind = rose_bind,
1465 .connect = rose_connect,
1466 .socketpair = sock_no_socketpair,
1467 .accept = rose_accept,
1468 .getname = rose_getname,
Linus Torvaldsa11e1d42018-06-28 09:43:44 -07001469 .poll = datagram_poll,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 .ioctl = rose_ioctl,
Arnd Bergmannc7cbdbf2019-04-17 22:51:48 +02001471 .gettstamp = sock_gettstamp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472 .listen = rose_listen,
1473 .shutdown = sock_no_shutdown,
1474 .setsockopt = rose_setsockopt,
1475 .getsockopt = rose_getsockopt,
1476 .sendmsg = rose_sendmsg,
1477 .recvmsg = rose_recvmsg,
1478 .mmap = sock_no_mmap,
1479 .sendpage = sock_no_sendpage,
1480};
1481
1482static struct notifier_block rose_dev_notifier = {
1483 .notifier_call = rose_device_event,
1484};
1485
1486static struct net_device **dev_rose;
1487
Ralf Baechle8d5cf592006-12-14 15:50:01 -08001488static struct ax25_protocol rose_pid = {
1489 .pid = AX25_P_ROSE,
1490 .func = rose_route_frame
1491};
1492
Ralf Baechlea4282712006-12-14 15:51:23 -08001493static struct ax25_linkfail rose_linkfail_notifier = {
1494 .func = rose_link_failed
1495};
1496
Linus Torvalds1da177e2005-04-16 15:20:36 -07001497static int __init rose_proto_init(void)
1498{
1499 int i;
Alexey Dobriyana83cd2c2005-09-27 15:44:36 -07001500 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501
Alexey Dobriyana83cd2c2005-09-27 15:44:36 -07001502 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1503 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1504 rc = -EINVAL;
1505 goto out;
1506 }
1507
1508 rc = proto_register(&rose_proto, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001509 if (rc != 0)
1510 goto out;
1511
1512 rose_callsign = null_ax25_address;
1513
Kees Cook6396bb22018-06-12 14:03:40 -07001514 dev_rose = kcalloc(rose_ndevs, sizeof(struct net_device *),
1515 GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001516 if (dev_rose == NULL) {
1517 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
Alexey Dobriyana83cd2c2005-09-27 15:44:36 -07001518 rc = -ENOMEM;
1519 goto out_proto_unregister;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001520 }
1521
Linus Torvalds1da177e2005-04-16 15:20:36 -07001522 for (i = 0; i < rose_ndevs; i++) {
1523 struct net_device *dev;
1524 char name[IFNAMSIZ];
1525
1526 sprintf(name, "rose%d", i);
Tom Gundersenc835a672014-07-14 16:37:24 +02001527 dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, rose_setup);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001528 if (!dev) {
1529 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
Alexey Dobriyan70ff3b62005-09-27 15:43:46 -07001530 rc = -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001531 goto fail;
1532 }
Alexey Dobriyan70ff3b62005-09-27 15:43:46 -07001533 rc = register_netdev(dev);
1534 if (rc) {
Alexey Dobriyan520d1b82005-09-27 15:45:15 -07001535 printk(KERN_ERR "ROSE: netdevice registration failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001536 free_netdev(dev);
1537 goto fail;
1538 }
David S. Millerc773e842008-07-08 23:13:53 -07001539 rose_set_lockdep_key(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001540 dev_rose[i] = dev;
1541 }
1542
1543 sock_register(&rose_family_ops);
1544 register_netdevice_notifier(&rose_dev_notifier);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001545
Ralf Baechle8d5cf592006-12-14 15:50:01 -08001546 ax25_register_pid(&rose_pid);
Ralf Baechlea4282712006-12-14 15:51:23 -08001547 ax25_linkfail_register(&rose_linkfail_notifier);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001548
1549#ifdef CONFIG_SYSCTL
1550 rose_register_sysctl();
1551#endif
1552 rose_loopback_init();
1553
1554 rose_add_loopback_neigh();
1555
Christoph Hellwigfddda2b2018-04-13 19:44:18 +02001556 proc_create_seq("rose", 0444, init_net.proc_net, &rose_info_seqops);
1557 proc_create_seq("rose_neigh", 0444, init_net.proc_net,
1558 &rose_neigh_seqops);
1559 proc_create_seq("rose_nodes", 0444, init_net.proc_net,
1560 &rose_node_seqops);
1561 proc_create_seq("rose_routes", 0444, init_net.proc_net,
1562 &rose_route_seqops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001563out:
1564 return rc;
1565fail:
1566 while (--i >= 0) {
1567 unregister_netdev(dev_rose[i]);
1568 free_netdev(dev_rose[i]);
1569 }
1570 kfree(dev_rose);
Alexey Dobriyana83cd2c2005-09-27 15:44:36 -07001571out_proto_unregister:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001572 proto_unregister(&rose_proto);
Alexey Dobriyan70ff3b62005-09-27 15:43:46 -07001573 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001574}
1575module_init(rose_proto_init);
1576
1577module_param(rose_ndevs, int, 0);
1578MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1579
1580MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1581MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1582MODULE_LICENSE("GPL");
1583MODULE_ALIAS_NETPROTO(PF_ROSE);
1584
1585static void __exit rose_exit(void)
1586{
1587 int i;
1588
Gao fengece31ff2013-02-18 01:34:56 +00001589 remove_proc_entry("rose", init_net.proc_net);
1590 remove_proc_entry("rose_neigh", init_net.proc_net);
1591 remove_proc_entry("rose_nodes", init_net.proc_net);
1592 remove_proc_entry("rose_routes", init_net.proc_net);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001593 rose_loopback_clear();
1594
1595 rose_rt_free();
1596
1597 ax25_protocol_release(AX25_P_ROSE);
Ralf Baechlea4282712006-12-14 15:51:23 -08001598 ax25_linkfail_release(&rose_linkfail_notifier);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001599
1600 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1601 ax25_listen_release(&rose_callsign, NULL);
1602
1603#ifdef CONFIG_SYSCTL
1604 rose_unregister_sysctl();
1605#endif
1606 unregister_netdevice_notifier(&rose_dev_notifier);
1607
1608 sock_unregister(PF_ROSE);
1609
1610 for (i = 0; i < rose_ndevs; i++) {
1611 struct net_device *dev = dev_rose[i];
1612
1613 if (dev) {
1614 unregister_netdev(dev);
1615 free_netdev(dev);
1616 }
1617 }
1618
1619 kfree(dev_rose);
1620 proto_unregister(&rose_proto);
1621}
1622
1623module_exit(rose_exit);