1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 *
4 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
5 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
6 * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net)
7 * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi)
8 */
9
10 #include <linux/capability.h>
11 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/init.h>
14 #include <linux/errno.h>
15 #include <linux/types.h>
16 #include <linux/socket.h>
17 #include <linux/in.h>
18 #include <linux/slab.h>
19 #include <linux/kernel.h>
20 #include <linux/sched/signal.h>
21 #include <linux/spinlock.h>
22 #include <linux/timer.h>
23 #include <linux/string.h>
24 #include <linux/sockios.h>
25 #include <linux/net.h>
26 #include <linux/stat.h>
27 #include <net/net_namespace.h>
28 #include <net/ax25.h>
29 #include <linux/inet.h>
30 #include <linux/netdevice.h>
31 #include <linux/if_arp.h>
32 #include <linux/skbuff.h>
33 #include <net/sock.h>
34 #include <linux/uaccess.h>
35 #include <linux/fcntl.h>
36 #include <linux/termios.h>
37 #include <linux/mm.h>
38 #include <linux/interrupt.h>
39 #include <linux/notifier.h>
40 #include <net/rose.h>
41 #include <linux/proc_fs.h>
42 #include <linux/seq_file.h>
43 #include <net/tcp_states.h>
44 #include <net/ip.h>
45 #include <net/arp.h>
46
47 static int rose_ndevs = 10;
48
49 int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
50 int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1;
51 int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2;
52 int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3;
53 int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE;
54 int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB;
55 int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING;
56 int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT;
57 int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC;
58 int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE;
59
60 static HLIST_HEAD(rose_list);
61 static DEFINE_SPINLOCK(rose_list_lock);
62
63 static const struct proto_ops rose_proto_ops;
64
65 ax25_address rose_callsign;
66
67 /*
68 * ROSE network devices are virtual network devices encapsulating ROSE
69 * frames into AX.25 which will be sent through an AX.25 device, so form a
70 * special "super class" of normal net devices; split their locks off into a
71 * separate class since they always nest.
72 */
73 static struct lock_class_key rose_netdev_xmit_lock_key;
74 static struct lock_class_key rose_netdev_addr_lock_key;
75
76 static void rose_set_lockdep_one(struct net_device *dev,
77 struct netdev_queue *txq,
78 void *_unused)
79 {
80 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
81 }
82
83 static void rose_set_lockdep_key(struct net_device *dev)
84 {
85 lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key);
86 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
87 }
88
89 /*
90 * Convert a ROSE address into text.
91 */
92 char *rose2asc(char *buf, const rose_address *addr)
93 {
94 if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
95 addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
96 addr->rose_addr[4] == 0x00) {
97 strcpy(buf, "*");
98 } else {
99 sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
100 addr->rose_addr[1] & 0xFF,
101 addr->rose_addr[2] & 0xFF,
102 addr->rose_addr[3] & 0xFF,
103 addr->rose_addr[4] & 0xFF);
104 }
105
106 return buf;
107 }
108
109 /*
110 * Compare two ROSE addresses, 0 == equal.
111 */
112 int rosecmp(const rose_address *addr1, const rose_address *addr2)
113 {
114 int i;
115
116 for (i = 0; i < 5; i++)
117 if (addr1->rose_addr[i] != addr2->rose_addr[i])
118 return 1;
119
120 return 0;
121 }
122
123 /*
124 * Compare two ROSE addresses for only mask digits, 0 == equal.
125 */
126 int rosecmpm(const rose_address *addr1, const rose_address *addr2,
127 unsigned short mask)
128 {
129 unsigned int i, j;
130
131 if (mask > 10)
132 return 1;
133
134 for (i = 0; i < mask; i++) {
135 j = i / 2;
136
137 if ((i % 2) != 0) {
138 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F))
139 return 1;
140 } else {
141 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0))
142 return 1;
143 }
144 }
145
146 return 0;
147 }
148
149 /*
150 * Socket removal during an interrupt is now safe.
151 */
152 static void rose_remove_socket(struct sock *sk)
153 {
154 spin_lock_bh(&rose_list_lock);
155 sk_del_node_init(sk);
156 spin_unlock_bh(&rose_list_lock);
157 }
158
159 /*
160 * Kill all bound sockets on a broken link layer connection to a
161 * particular neighbour.
162 */
163 void rose_kill_by_neigh(struct rose_neigh *neigh)
164 {
165 struct sock *s;
166
167 spin_lock_bh(&rose_list_lock);
168 sk_for_each(s, &rose_list) {
169 struct rose_sock *rose = rose_sk(s);
170
171 if (rose->neighbour == neigh) {
172 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
173 rose->neighbour->use--;
174 rose->neighbour = NULL;
175 }
176 }
177 spin_unlock_bh(&rose_list_lock);
178 }
179
180 /*
181 * Kill all bound sockets on a dropped device.
182 */
183 static void rose_kill_by_device(struct net_device *dev)
184 {
185 struct sock *s;
186
187 spin_lock_bh(&rose_list_lock);
188 sk_for_each(s, &rose_list) {
189 struct rose_sock *rose = rose_sk(s);
190
191 if (rose->device == dev) {
192 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
193 if (rose->neighbour)
194 rose->neighbour->use--;
195 dev_put(rose->device);
196 rose->device = NULL;
197 }
198 }
199 spin_unlock_bh(&rose_list_lock);
200 }
201
202 /*
203 * Handle device status changes.
204 */
205 static int rose_device_event(struct notifier_block *this,
206 unsigned long event, void *ptr)
207 {
208 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
209
210 if (!net_eq(dev_net(dev), &init_net))
211 return NOTIFY_DONE;
212
213 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 */
232 static 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 */
244 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
245 {
246 struct sock *s;
247
248 spin_lock_bh(&rose_list_lock);
249 sk_for_each(s, &rose_list) {
250 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
258 sk_for_each(s, &rose_list) {
259 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;
267 found:
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 */
275 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
276 {
277 struct sock *s;
278
279 spin_lock_bh(&rose_list_lock);
280 sk_for_each(s, &rose_list) {
281 struct rose_sock *rose = rose_sk(s);
282
283 if (rose->lci == lci && rose->neighbour == neigh)
284 goto found;
285 }
286 s = NULL;
287 found:
288 spin_unlock_bh(&rose_list_lock);
289 return s;
290 }
291
292 /*
293 * Find a unique LCI for a given device.
294 */
295 unsigned 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 */
315 void rose_destroy_socket(struct sock *);
316
317 /*
318 * Handler for deferred kills.
319 */
320 static void rose_destroy_timer(struct timer_list *t)
321 {
322 struct sock *sk = from_timer(sk, t, sk_timer);
323
324 rose_destroy_socket(sk);
325 }
326
327 /*
328 * This is called from user mode and the timers. Thus it protects itself
329 * against interrupt users but doesn't worry about being called during
330 * work. Once it is removed from the queue no interrupt or bottom half
331 * will touch it and we are (fairly 8-) ) safe.
332 */
333 void rose_destroy_socket(struct sock *sk)
334 {
335 struct sk_buff *skb;
336
337 rose_remove_socket(sk);
338 rose_stop_heartbeat(sk);
339 rose_stop_idletimer(sk);
340 rose_stop_timer(sk);
341
342 rose_clear_queues(sk); /* Flush the queues */
343
344 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
345 if (skb->sk != sk) { /* A pending connection */
346 /* Queue the unaccepted socket for death */
347 sock_set_flag(skb->sk, SOCK_DEAD);
348 rose_start_heartbeat(skb->sk);
349 rose_sk(skb->sk)->state = ROSE_STATE_0;
350 }
351
352 kfree_skb(skb);
353 }
354
355 if (sk_has_allocations(sk)) {
356 /* Defer: outstanding buffers */
357 timer_setup(&sk->sk_timer, rose_destroy_timer, 0);
358 sk->sk_timer.expires = jiffies + 10 * HZ;
359 add_timer(&sk->sk_timer);
360 } else
361 sock_put(sk);
362 }
363
364 /*
365 * Handling for system calls applied via the various interfaces to a
366 * ROSE socket object.
367 */
368
369 static int rose_setsockopt(struct socket *sock, int level, int optname,
370 sockptr_t optval, unsigned int optlen)
371 {
372 struct sock *sk = sock->sk;
373 struct rose_sock *rose = rose_sk(sk);
374 int opt;
375
376 if (level != SOL_ROSE)
377 return -ENOPROTOOPT;
378
379 if (optlen < sizeof(int))
380 return -EINVAL;
381
382 if (copy_from_sockptr(&opt, optval, sizeof(int)))
383 return -EFAULT;
384
385 switch (optname) {
386 case ROSE_DEFER:
387 rose->defer = opt ? 1 : 0;
388 return 0;
389
390 case ROSE_T1:
391 if (opt < 1)
392 return -EINVAL;
393 rose->t1 = opt * HZ;
394 return 0;
395
396 case ROSE_T2:
397 if (opt < 1)
398 return -EINVAL;
399 rose->t2 = opt * HZ;
400 return 0;
401
402 case ROSE_T3:
403 if (opt < 1)
404 return -EINVAL;
405 rose->t3 = opt * HZ;
406 return 0;
407
408 case ROSE_HOLDBACK:
409 if (opt < 1)
410 return -EINVAL;
411 rose->hb = opt * HZ;
412 return 0;
413
414 case ROSE_IDLE:
415 if (opt < 0)
416 return -EINVAL;
417 rose->idle = opt * 60 * HZ;
418 return 0;
419
420 case ROSE_QBITINCL:
421 rose->qbitincl = opt ? 1 : 0;
422 return 0;
423
424 default:
425 return -ENOPROTOOPT;
426 }
427 }
428
429 static int rose_getsockopt(struct socket *sock, int level, int optname,
430 char __user *optval, int __user *optlen)
431 {
432 struct sock *sk = sock->sk;
433 struct rose_sock *rose = rose_sk(sk);
434 int val = 0;
435 int len;
436
437 if (level != SOL_ROSE)
438 return -ENOPROTOOPT;
439
440 if (get_user(len, optlen))
441 return -EFAULT;
442
443 if (len < 0)
444 return -EINVAL;
445
446 switch (optname) {
447 case ROSE_DEFER:
448 val = rose->defer;
449 break;
450
451 case ROSE_T1:
452 val = rose->t1 / HZ;
453 break;
454
455 case ROSE_T2:
456 val = rose->t2 / HZ;
457 break;
458
459 case ROSE_T3:
460 val = rose->t3 / HZ;
461 break;
462
463 case ROSE_HOLDBACK:
464 val = rose->hb / HZ;
465 break;
466
467 case ROSE_IDLE:
468 val = rose->idle / (60 * HZ);
469 break;
470
471 case ROSE_QBITINCL:
472 val = rose->qbitincl;
473 break;
474
475 default:
476 return -ENOPROTOOPT;
477 }
478
479 len = min_t(unsigned int, len, sizeof(int));
480
481 if (put_user(len, optlen))
482 return -EFAULT;
483
484 return copy_to_user(optval, &val, len) ? -EFAULT : 0;
485 }
486
487 static int rose_listen(struct socket *sock, int backlog)
488 {
489 struct sock *sk = sock->sk;
490
491 if (sk->sk_state != TCP_LISTEN) {
492 struct rose_sock *rose = rose_sk(sk);
493
494 rose->dest_ndigis = 0;
495 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
496 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
497 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
498 sk->sk_max_ack_backlog = backlog;
499 sk->sk_state = TCP_LISTEN;
500 return 0;
501 }
502
503 return -EOPNOTSUPP;
504 }
505
506 static struct proto rose_proto = {
507 .name = "ROSE",
508 .owner = THIS_MODULE,
509 .obj_size = sizeof(struct rose_sock),
510 };
511
512 static int rose_create(struct net *net, struct socket *sock, int protocol,
513 int kern)
514 {
515 struct sock *sk;
516 struct rose_sock *rose;
517
518 if (!net_eq(net, &init_net))
519 return -EAFNOSUPPORT;
520
521 if (sock->type != SOCK_SEQPACKET || protocol != 0)
522 return -ESOCKTNOSUPPORT;
523
524 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto, kern);
525 if (sk == NULL)
526 return -ENOMEM;
527
528 rose = rose_sk(sk);
529
530 sock_init_data(sock, sk);
531
532 skb_queue_head_init(&rose->ack_queue);
533 #ifdef M_BIT
534 skb_queue_head_init(&rose->frag_queue);
535 rose->fraglen = 0;
536 #endif
537
538 sock->ops = &rose_proto_ops;
539 sk->sk_protocol = protocol;
540
541 timer_setup(&rose->timer, NULL, 0);
542 timer_setup(&rose->idletimer, NULL, 0);
543
544 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
545 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
546 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
547 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
548 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
549
550 rose->state = ROSE_STATE_0;
551
552 return 0;
553 }
554
555 static struct sock *rose_make_new(struct sock *osk)
556 {
557 struct sock *sk;
558 struct rose_sock *rose, *orose;
559
560 if (osk->sk_type != SOCK_SEQPACKET)
561 return NULL;
562
563 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto, 0);
564 if (sk == NULL)
565 return NULL;
566
567 rose = rose_sk(sk);
568
569 sock_init_data(NULL, sk);
570
571 skb_queue_head_init(&rose->ack_queue);
572 #ifdef M_BIT
573 skb_queue_head_init(&rose->frag_queue);
574 rose->fraglen = 0;
575 #endif
576
577 sk->sk_type = osk->sk_type;
578 sk->sk_priority = osk->sk_priority;
579 sk->sk_protocol = osk->sk_protocol;
580 sk->sk_rcvbuf = osk->sk_rcvbuf;
581 sk->sk_sndbuf = osk->sk_sndbuf;
582 sk->sk_state = TCP_ESTABLISHED;
583 sock_copy_flags(sk, osk);
584
585 timer_setup(&rose->timer, NULL, 0);
586 timer_setup(&rose->idletimer, NULL, 0);
587
588 orose = rose_sk(osk);
589 rose->t1 = orose->t1;
590 rose->t2 = orose->t2;
591 rose->t3 = orose->t3;
592 rose->hb = orose->hb;
593 rose->idle = orose->idle;
594 rose->defer = orose->defer;
595 rose->device = orose->device;
596 if (rose->device)
597 dev_hold(rose->device);
598 rose->qbitincl = orose->qbitincl;
599
600 return sk;
601 }
602
603 static int rose_release(struct socket *sock)
604 {
605 struct sock *sk = sock->sk;
606 struct rose_sock *rose;
607
608 if (sk == NULL) return 0;
609
610 sock_hold(sk);
611 sock_orphan(sk);
612 lock_sock(sk);
613 rose = rose_sk(sk);
614
615 switch (rose->state) {
616 case ROSE_STATE_0:
617 release_sock(sk);
618 rose_disconnect(sk, 0, -1, -1);
619 lock_sock(sk);
620 rose_destroy_socket(sk);
621 break;
622
623 case ROSE_STATE_2:
624 rose->neighbour->use--;
625 release_sock(sk);
626 rose_disconnect(sk, 0, -1, -1);
627 lock_sock(sk);
628 rose_destroy_socket(sk);
629 break;
630
631 case ROSE_STATE_1:
632 case ROSE_STATE_3:
633 case ROSE_STATE_4:
634 case ROSE_STATE_5:
635 rose_clear_queues(sk);
636 rose_stop_idletimer(sk);
637 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
638 rose_start_t3timer(sk);
639 rose->state = ROSE_STATE_2;
640 sk->sk_state = TCP_CLOSE;
641 sk->sk_shutdown |= SEND_SHUTDOWN;
642 sk->sk_state_change(sk);
643 sock_set_flag(sk, SOCK_DEAD);
644 sock_set_flag(sk, SOCK_DESTROY);
645 break;
646
647 default:
648 break;
649 }
650
651 dev_put(rose->device);
652 sock->sk = NULL;
653 release_sock(sk);
654 sock_put(sk);
655
656 return 0;
657 }
658
659 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
660 {
661 struct sock *sk = sock->sk;
662 struct rose_sock *rose = rose_sk(sk);
663 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
664 struct net_device *dev;
665 ax25_address *source;
666 ax25_uid_assoc *user;
667 int n;
668
669 if (!sock_flag(sk, SOCK_ZAPPED))
670 return -EINVAL;
671
672 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
673 return -EINVAL;
674
675 if (addr->srose_family != AF_ROSE)
676 return -EINVAL;
677
678 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
679 return -EINVAL;
680
681 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
682 return -EINVAL;
683
684 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL)
685 return -EADDRNOTAVAIL;
686
687 source = &addr->srose_call;
688
689 user = ax25_findbyuid(current_euid());
690 if (user) {
691 rose->source_call = user->call;
692 ax25_uid_put(user);
693 } else {
694 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) {
695 dev_put(dev);
696 return -EACCES;
697 }
698 rose->source_call = *source;
699 }
700
701 rose->source_addr = addr->srose_addr;
702 rose->device = dev;
703 rose->source_ndigis = addr->srose_ndigis;
704
705 if (addr_len == sizeof(struct full_sockaddr_rose)) {
706 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
707 for (n = 0 ; n < addr->srose_ndigis ; n++)
708 rose->source_digis[n] = full_addr->srose_digis[n];
709 } else {
710 if (rose->source_ndigis == 1) {
711 rose->source_digis[0] = addr->srose_digi;
712 }
713 }
714
715 rose_insert_socket(sk);
716
717 sock_reset_flag(sk, SOCK_ZAPPED);
718
719 return 0;
720 }
721
722 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
723 {
724 struct sock *sk = sock->sk;
725 struct rose_sock *rose = rose_sk(sk);
726 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
727 unsigned char cause, diagnostic;
728 ax25_uid_assoc *user;
729 int n, err = 0;
730
731 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
732 return -EINVAL;
733
734 if (addr->srose_family != AF_ROSE)
735 return -EINVAL;
736
737 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
738 return -EINVAL;
739
740 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
741 return -EINVAL;
742
743 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
744 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
745 return -EINVAL;
746
747 lock_sock(sk);
748
749 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
750 /* Connect completed during a ERESTARTSYS event */
751 sock->state = SS_CONNECTED;
752 goto out_release;
753 }
754
755 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
756 sock->state = SS_UNCONNECTED;
757 err = -ECONNREFUSED;
758 goto out_release;
759 }
760
761 if (sk->sk_state == TCP_ESTABLISHED) {
762 /* No reconnect on a seqpacket socket */
763 err = -EISCONN;
764 goto out_release;
765 }
766
767 sk->sk_state = TCP_CLOSE;
768 sock->state = SS_UNCONNECTED;
769
770 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
771 &diagnostic, 0);
772 if (!rose->neighbour) {
773 err = -ENETUNREACH;
774 goto out_release;
775 }
776
777 rose->lci = rose_new_lci(rose->neighbour);
778 if (!rose->lci) {
779 err = -ENETUNREACH;
780 goto out_release;
781 }
782
783 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
784 struct net_device *dev;
785
786 sock_reset_flag(sk, SOCK_ZAPPED);
787
788 dev = rose_dev_first();
789 if (!dev) {
790 err = -ENETUNREACH;
791 goto out_release;
792 }
793
794 user = ax25_findbyuid(current_euid());
795 if (!user) {
796 err = -EINVAL;
797 dev_put(dev);
798 goto out_release;
799 }
800
801 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
802 rose->source_call = user->call;
803 rose->device = dev;
804 ax25_uid_put(user);
805
806 rose_insert_socket(sk); /* Finish the bind */
807 }
808 rose->dest_addr = addr->srose_addr;
809 rose->dest_call = addr->srose_call;
810 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
811 rose->dest_ndigis = addr->srose_ndigis;
812
813 if (addr_len == sizeof(struct full_sockaddr_rose)) {
814 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
815 for (n = 0 ; n < addr->srose_ndigis ; n++)
816 rose->dest_digis[n] = full_addr->srose_digis[n];
817 } else {
818 if (rose->dest_ndigis == 1) {
819 rose->dest_digis[0] = addr->srose_digi;
820 }
821 }
822
823 /* Move to connecting socket, start sending Connect Requests */
824 sock->state = SS_CONNECTING;
825 sk->sk_state = TCP_SYN_SENT;
826
827 rose->state = ROSE_STATE_1;
828
829 rose->neighbour->use++;
830
831 rose_write_internal(sk, ROSE_CALL_REQUEST);
832 rose_start_heartbeat(sk);
833 rose_start_t1timer(sk);
834
835 /* Now the loop */
836 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
837 err = -EINPROGRESS;
838 goto out_release;
839 }
840
841 /*
842 * A Connect Ack with Choke or timeout or failed routing will go to
843 * closed.
844 */
845 if (sk->sk_state == TCP_SYN_SENT) {
846 DEFINE_WAIT(wait);
847
848 for (;;) {
849 prepare_to_wait(sk_sleep(sk), &wait,
850 TASK_INTERRUPTIBLE);
851 if (sk->sk_state != TCP_SYN_SENT)
852 break;
853 if (!signal_pending(current)) {
854 release_sock(sk);
855 schedule();
856 lock_sock(sk);
857 continue;
858 }
859 err = -ERESTARTSYS;
860 break;
861 }
862 finish_wait(sk_sleep(sk), &wait);
863
864 if (err)
865 goto out_release;
866 }
867
868 if (sk->sk_state != TCP_ESTABLISHED) {
869 sock->state = SS_UNCONNECTED;
870 err = sock_error(sk); /* Always set at this point */
871 goto out_release;
872 }
873
874 sock->state = SS_CONNECTED;
875
876 out_release:
877 release_sock(sk);
878
879 return err;
880 }
881
882 static int rose_accept(struct socket *sock, struct socket *newsock, int flags,
883 bool kern)
884 {
885 struct sk_buff *skb;
886 struct sock *newsk;
887 DEFINE_WAIT(wait);
888 struct sock *sk;
889 int err = 0;
890
891 if ((sk = sock->sk) == NULL)
892 return -EINVAL;
893
894 lock_sock(sk);
895 if (sk->sk_type != SOCK_SEQPACKET) {
896 err = -EOPNOTSUPP;
897 goto out_release;
898 }
899
900 if (sk->sk_state != TCP_LISTEN) {
901 err = -EINVAL;
902 goto out_release;
903 }
904
905 /*
906 * The write queue this time is holding sockets ready to use
907 * hooked into the SABM we saved
908 */
909 for (;;) {
910 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
911
912 skb = skb_dequeue(&sk->sk_receive_queue);
913 if (skb)
914 break;
915
916 if (flags & O_NONBLOCK) {
917 err = -EWOULDBLOCK;
918 break;
919 }
920 if (!signal_pending(current)) {
921 release_sock(sk);
922 schedule();
923 lock_sock(sk);
924 continue;
925 }
926 err = -ERESTARTSYS;
927 break;
928 }
929 finish_wait(sk_sleep(sk), &wait);
930 if (err)
931 goto out_release;
932
933 newsk = skb->sk;
934 sock_graft(newsk, newsock);
935
936 /* Now attach up the new socket */
937 skb->sk = NULL;
938 kfree_skb(skb);
939 sk_acceptq_removed(sk);
940
941 out_release:
942 release_sock(sk);
943
944 return err;
945 }
946
947 static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
948 int peer)
949 {
950 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
951 struct sock *sk = sock->sk;
952 struct rose_sock *rose = rose_sk(sk);
953 int n;
954
955 memset(srose, 0, sizeof(*srose));
956 if (peer != 0) {
957 if (sk->sk_state != TCP_ESTABLISHED)
958 return -ENOTCONN;
959 srose->srose_family = AF_ROSE;
960 srose->srose_addr = rose->dest_addr;
961 srose->srose_call = rose->dest_call;
962 srose->srose_ndigis = rose->dest_ndigis;
963 for (n = 0; n < rose->dest_ndigis; n++)
964 srose->srose_digis[n] = rose->dest_digis[n];
965 } else {
966 srose->srose_family = AF_ROSE;
967 srose->srose_addr = rose->source_addr;
968 srose->srose_call = rose->source_call;
969 srose->srose_ndigis = rose->source_ndigis;
970 for (n = 0; n < rose->source_ndigis; n++)
971 srose->srose_digis[n] = rose->source_digis[n];
972 }
973
974 return sizeof(struct full_sockaddr_rose);
975 }
976
977 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
978 {
979 struct sock *sk;
980 struct sock *make;
981 struct rose_sock *make_rose;
982 struct rose_facilities_struct facilities;
983 int n;
984
985 skb->sk = NULL; /* Initially we don't know who it's for */
986
987 /*
988 * skb->data points to the rose frame start
989 */
990 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
991
992 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF,
993 skb->len - ROSE_CALL_REQ_FACILITIES_OFF,
994 &facilities)) {
995 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
996 return 0;
997 }
998
999 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
1000
1001 /*
1002 * We can't accept the Call Request.
1003 */
1004 if (sk == NULL || sk_acceptq_is_full(sk) ||
1005 (make = rose_make_new(sk)) == NULL) {
1006 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
1007 return 0;
1008 }
1009
1010 skb->sk = make;
1011 make->sk_state = TCP_ESTABLISHED;
1012 make_rose = rose_sk(make);
1013
1014 make_rose->lci = lci;
1015 make_rose->dest_addr = facilities.dest_addr;
1016 make_rose->dest_call = facilities.dest_call;
1017 make_rose->dest_ndigis = facilities.dest_ndigis;
1018 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1019 make_rose->dest_digis[n] = facilities.dest_digis[n];
1020 make_rose->source_addr = facilities.source_addr;
1021 make_rose->source_call = facilities.source_call;
1022 make_rose->source_ndigis = facilities.source_ndigis;
1023 for (n = 0 ; n < facilities.source_ndigis ; n++)
1024 make_rose->source_digis[n] = facilities.source_digis[n];
1025 make_rose->neighbour = neigh;
1026 make_rose->device = dev;
1027 make_rose->facilities = facilities;
1028
1029 make_rose->neighbour->use++;
1030
1031 if (rose_sk(sk)->defer) {
1032 make_rose->state = ROSE_STATE_5;
1033 } else {
1034 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1035 make_rose->state = ROSE_STATE_3;
1036 rose_start_idletimer(make);
1037 }
1038
1039 make_rose->condition = 0x00;
1040 make_rose->vs = 0;
1041 make_rose->va = 0;
1042 make_rose->vr = 0;
1043 make_rose->vl = 0;
1044 sk_acceptq_added(sk);
1045
1046 rose_insert_socket(make);
1047
1048 skb_queue_head(&sk->sk_receive_queue, skb);
1049
1050 rose_start_heartbeat(make);
1051
1052 if (!sock_flag(sk, SOCK_DEAD))
1053 sk->sk_data_ready(sk);
1054
1055 return 1;
1056 }
1057
1058 static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
1059 {
1060 struct sock *sk = sock->sk;
1061 struct rose_sock *rose = rose_sk(sk);
1062 DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, msg->msg_name);
1063 int err;
1064 struct full_sockaddr_rose srose;
1065 struct sk_buff *skb;
1066 unsigned char *asmptr;
1067 int n, size, qbit = 0;
1068
1069 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1070 return -EINVAL;
1071
1072 if (sock_flag(sk, SOCK_ZAPPED))
1073 return -EADDRNOTAVAIL;
1074
1075 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1076 send_sig(SIGPIPE, current, 0);
1077 return -EPIPE;
1078 }
1079
1080 if (rose->neighbour == NULL || rose->device == NULL)
1081 return -ENETUNREACH;
1082
1083 if (usrose != NULL) {
1084 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1085 return -EINVAL;
1086 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1087 memcpy(&srose, usrose, msg->msg_namelen);
1088 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1089 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1090 return -EISCONN;
1091 if (srose.srose_ndigis != rose->dest_ndigis)
1092 return -EISCONN;
1093 if (srose.srose_ndigis == rose->dest_ndigis) {
1094 for (n = 0 ; n < srose.srose_ndigis ; n++)
1095 if (ax25cmp(&rose->dest_digis[n],
1096 &srose.srose_digis[n]))
1097 return -EISCONN;
1098 }
1099 if (srose.srose_family != AF_ROSE)
1100 return -EINVAL;
1101 } else {
1102 if (sk->sk_state != TCP_ESTABLISHED)
1103 return -ENOTCONN;
1104
1105 srose.srose_family = AF_ROSE;
1106 srose.srose_addr = rose->dest_addr;
1107 srose.srose_call = rose->dest_call;
1108 srose.srose_ndigis = rose->dest_ndigis;
1109 for (n = 0 ; n < rose->dest_ndigis ; n++)
1110 srose.srose_digis[n] = rose->dest_digis[n];
1111 }
1112
1113 /* Build a packet */
1114 /* Sanity check the packet size */
1115 if (len > 65535)
1116 return -EMSGSIZE;
1117
1118 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1119
1120 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1121 return err;
1122
1123 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1124
1125 /*
1126 * Put the data on the end
1127 */
1128
1129 skb_reset_transport_header(skb);
1130 skb_put(skb, len);
1131
1132 err = memcpy_from_msg(skb_transport_header(skb), msg, len);
1133 if (err) {
1134 kfree_skb(skb);
1135 return err;
1136 }
1137
1138 /*
1139 * If the Q BIT Include socket option is in force, the first
1140 * byte of the user data is the logical value of the Q Bit.
1141 */
1142 if (rose->qbitincl) {
1143 qbit = skb->data[0];
1144 skb_pull(skb, 1);
1145 }
1146
1147 /*
1148 * Push down the ROSE header
1149 */
1150 asmptr = skb_push(skb, ROSE_MIN_LEN);
1151
1152 /* Build a ROSE Network header */
1153 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1154 asmptr[1] = (rose->lci >> 0) & 0xFF;
1155 asmptr[2] = ROSE_DATA;
1156
1157 if (qbit)
1158 asmptr[0] |= ROSE_Q_BIT;
1159
1160 if (sk->sk_state != TCP_ESTABLISHED) {
1161 kfree_skb(skb);
1162 return -ENOTCONN;
1163 }
1164
1165 #ifdef M_BIT
1166 #define ROSE_PACLEN (256-ROSE_MIN_LEN)
1167 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1168 unsigned char header[ROSE_MIN_LEN];
1169 struct sk_buff *skbn;
1170 int frontlen;
1171 int lg;
1172
1173 /* Save a copy of the Header */
1174 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
1175 skb_pull(skb, ROSE_MIN_LEN);
1176
1177 frontlen = skb_headroom(skb);
1178
1179 while (skb->len > 0) {
1180 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1181 kfree_skb(skb);
1182 return err;
1183 }
1184
1185 skbn->sk = sk;
1186 skbn->free = 1;
1187 skbn->arp = 1;
1188
1189 skb_reserve(skbn, frontlen);
1190
1191 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1192
1193 /* Copy the user data */
1194 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
1195 skb_pull(skb, lg);
1196
1197 /* Duplicate the Header */
1198 skb_push(skbn, ROSE_MIN_LEN);
1199 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
1200
1201 if (skb->len > 0)
1202 skbn->data[2] |= M_BIT;
1203
1204 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1205 }
1206
1207 skb->free = 1;
1208 kfree_skb(skb);
1209 } else {
1210 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1211 }
1212 #else
1213 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1214 #endif
1215
1216 rose_kick(sk);
1217
1218 return len;
1219 }
1220
1221
1222 static int rose_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
1223 int flags)
1224 {
1225 struct sock *sk = sock->sk;
1226 struct rose_sock *rose = rose_sk(sk);
1227 size_t copied;
1228 unsigned char *asmptr;
1229 struct sk_buff *skb;
1230 int n, er, qbit;
1231
1232 /*
1233 * This works for seqpacket too. The receiver has ordered the queue for
1234 * us! We do one quick check first though
1235 */
1236 if (sk->sk_state != TCP_ESTABLISHED)
1237 return -ENOTCONN;
1238
1239 /* Now we can treat all alike */
1240 skb = skb_recv_datagram(sk, flags, &er);
1241 if (!skb)
1242 return er;
1243
1244 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1245
1246 skb_pull(skb, ROSE_MIN_LEN);
1247
1248 if (rose->qbitincl) {
1249 asmptr = skb_push(skb, 1);
1250 *asmptr = qbit;
1251 }
1252
1253 skb_reset_transport_header(skb);
1254 copied = skb->len;
1255
1256 if (copied > size) {
1257 copied = size;
1258 msg->msg_flags |= MSG_TRUNC;
1259 }
1260
1261 skb_copy_datagram_msg(skb, 0, msg, copied);
1262
1263 if (msg->msg_name) {
1264 struct sockaddr_rose *srose;
1265 DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose,
1266 msg->msg_name);
1267
1268 memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose));
1269 srose = msg->msg_name;
1270 srose->srose_family = AF_ROSE;
1271 srose->srose_addr = rose->dest_addr;
1272 srose->srose_call = rose->dest_call;
1273 srose->srose_ndigis = rose->dest_ndigis;
1274 for (n = 0 ; n < rose->dest_ndigis ; n++)
1275 full_srose->srose_digis[n] = rose->dest_digis[n];
1276 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1277 }
1278
1279 skb_free_datagram(sk, skb);
1280
1281 return copied;
1282 }
1283
1284
1285 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1286 {
1287 struct sock *sk = sock->sk;
1288 struct rose_sock *rose = rose_sk(sk);
1289 void __user *argp = (void __user *)arg;
1290
1291 switch (cmd) {
1292 case TIOCOUTQ: {
1293 long amount;
1294
1295 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
1296 if (amount < 0)
1297 amount = 0;
1298 return put_user(amount, (unsigned int __user *) argp);
1299 }
1300
1301 case TIOCINQ: {
1302 struct sk_buff *skb;
1303 long amount = 0L;
1304 /* These two are safe on a single CPU system as only user tasks fiddle here */
1305 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1306 amount = skb->len;
1307 return put_user(amount, (unsigned int __user *) argp);
1308 }
1309
1310 case SIOCGIFADDR:
1311 case SIOCSIFADDR:
1312 case SIOCGIFDSTADDR:
1313 case SIOCSIFDSTADDR:
1314 case SIOCGIFBRDADDR:
1315 case SIOCSIFBRDADDR:
1316 case SIOCGIFNETMASK:
1317 case SIOCSIFNETMASK:
1318 case SIOCGIFMETRIC:
1319 case SIOCSIFMETRIC:
1320 return -EINVAL;
1321
1322 case SIOCADDRT:
1323 case SIOCDELRT:
1324 case SIOCRSCLRRT:
1325 if (!capable(CAP_NET_ADMIN))
1326 return -EPERM;
1327 return rose_rt_ioctl(cmd, argp);
1328
1329 case SIOCRSGCAUSE: {
1330 struct rose_cause_struct rose_cause;
1331 rose_cause.cause = rose->cause;
1332 rose_cause.diagnostic = rose->diagnostic;
1333 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1334 }
1335
1336 case SIOCRSSCAUSE: {
1337 struct rose_cause_struct rose_cause;
1338 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1339 return -EFAULT;
1340 rose->cause = rose_cause.cause;
1341 rose->diagnostic = rose_cause.diagnostic;
1342 return 0;
1343 }
1344
1345 case SIOCRSSL2CALL:
1346 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1347 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1348 ax25_listen_release(&rose_callsign, NULL);
1349 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1350 return -EFAULT;
1351 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1352 return ax25_listen_register(&rose_callsign, NULL);
1353
1354 return 0;
1355
1356 case SIOCRSGL2CALL:
1357 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1358
1359 case SIOCRSACCEPT:
1360 if (rose->state == ROSE_STATE_5) {
1361 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1362 rose_start_idletimer(sk);
1363 rose->condition = 0x00;
1364 rose->vs = 0;
1365 rose->va = 0;
1366 rose->vr = 0;
1367 rose->vl = 0;
1368 rose->state = ROSE_STATE_3;
1369 }
1370 return 0;
1371
1372 default:
1373 return -ENOIOCTLCMD;
1374 }
1375
1376 return 0;
1377 }
1378
1379 #ifdef CONFIG_PROC_FS
1380 static void *rose_info_start(struct seq_file *seq, loff_t *pos)
1381 __acquires(rose_list_lock)
1382 {
1383 spin_lock_bh(&rose_list_lock);
1384 return seq_hlist_start_head(&rose_list, *pos);
1385 }
1386
1387 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1388 {
1389 return seq_hlist_next(v, &rose_list, pos);
1390 }
1391
1392 static void rose_info_stop(struct seq_file *seq, void *v)
1393 __releases(rose_list_lock)
1394 {
1395 spin_unlock_bh(&rose_list_lock);
1396 }
1397
1398 static int rose_info_show(struct seq_file *seq, void *v)
1399 {
1400 char buf[11], rsbuf[11];
1401
1402 if (v == SEQ_START_TOKEN)
1403 seq_puts(seq,
1404 "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");
1405
1406 else {
1407 struct sock *s = sk_entry(v);
1408 struct rose_sock *rose = rose_sk(s);
1409 const char *devname, *callsign;
1410 const struct net_device *dev = rose->device;
1411
1412 if (!dev)
1413 devname = "???";
1414 else
1415 devname = dev->name;
1416
1417 seq_printf(seq, "%-10s %-9s ",
1418 rose2asc(rsbuf, &rose->dest_addr),
1419 ax2asc(buf, &rose->dest_call));
1420
1421 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1422 callsign = "??????-?";
1423 else
1424 callsign = ax2asc(buf, &rose->source_call);
1425
1426 seq_printf(seq,
1427 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
1428 rose2asc(rsbuf, &rose->source_addr),
1429 callsign,
1430 devname,
1431 rose->lci & 0x0FFF,
1432 (rose->neighbour) ? rose->neighbour->number : 0,
1433 rose->state,
1434 rose->vs,
1435 rose->vr,
1436 rose->va,
1437 ax25_display_timer(&rose->timer) / HZ,
1438 rose->t1 / HZ,
1439 rose->t2 / HZ,
1440 rose->t3 / HZ,
1441 rose->hb / HZ,
1442 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1443 rose->idle / (60 * HZ),
1444 sk_wmem_alloc_get(s),
1445 sk_rmem_alloc_get(s),
1446 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1447 }
1448
1449 return 0;
1450 }
1451
1452 static const struct seq_operations rose_info_seqops = {
1453 .start = rose_info_start,
1454 .next = rose_info_next,
1455 .stop = rose_info_stop,
1456 .show = rose_info_show,
1457 };
1458 #endif /* CONFIG_PROC_FS */
1459
1460 static const struct net_proto_family rose_family_ops = {
1461 .family = PF_ROSE,
1462 .create = rose_create,
1463 .owner = THIS_MODULE,
1464 };
1465
1466 static const struct proto_ops rose_proto_ops = {
1467 .family = PF_ROSE,
1468 .owner = THIS_MODULE,
1469 .release = rose_release,
1470 .bind = rose_bind,
1471 .connect = rose_connect,
1472 .socketpair = sock_no_socketpair,
1473 .accept = rose_accept,
1474 .getname = rose_getname,
1475 .poll = datagram_poll,
1476 .ioctl = rose_ioctl,
1477 .gettstamp = sock_gettstamp,
1478 .listen = rose_listen,
1479 .shutdown = sock_no_shutdown,
1480 .setsockopt = rose_setsockopt,
1481 .getsockopt = rose_getsockopt,
1482 .sendmsg = rose_sendmsg,
1483 .recvmsg = rose_recvmsg,
1484 .mmap = sock_no_mmap,
1485 .sendpage = sock_no_sendpage,
1486 };
1487
1488 static struct notifier_block rose_dev_notifier = {
1489 .notifier_call = rose_device_event,
1490 };
1491
1492 static struct net_device **dev_rose;
1493
1494 static struct ax25_protocol rose_pid = {
1495 .pid = AX25_P_ROSE,
1496 .func = rose_route_frame
1497 };
1498
1499 static struct ax25_linkfail rose_linkfail_notifier = {
1500 .func = rose_link_failed
1501 };
1502
1503 static int __init rose_proto_init(void)
1504 {
1505 int i;
1506 int rc;
1507
1508 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1509 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter too large\n");
1510 rc = -EINVAL;
1511 goto out;
1512 }
1513
1514 rc = proto_register(&rose_proto, 0);
1515 if (rc != 0)
1516 goto out;
1517
1518 rose_callsign = null_ax25_address;
1519
1520 dev_rose = kcalloc(rose_ndevs, sizeof(struct net_device *),
1521 GFP_KERNEL);
1522 if (dev_rose == NULL) {
1523 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
1524 rc = -ENOMEM;
1525 goto out_proto_unregister;
1526 }
1527
1528 for (i = 0; i < rose_ndevs; i++) {
1529 struct net_device *dev;
1530 char name[IFNAMSIZ];
1531
1532 sprintf(name, "rose%d", i);
1533 dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, rose_setup);
1534 if (!dev) {
1535 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
1536 rc = -ENOMEM;
1537 goto fail;
1538 }
1539 rc = register_netdev(dev);
1540 if (rc) {
1541 printk(KERN_ERR "ROSE: netdevice registration failed\n");
1542 free_netdev(dev);
1543 goto fail;
1544 }
1545 rose_set_lockdep_key(dev);
1546 dev_rose[i] = dev;
1547 }
1548
1549 sock_register(&rose_family_ops);
1550 register_netdevice_notifier(&rose_dev_notifier);
1551
1552 ax25_register_pid(&rose_pid);
1553 ax25_linkfail_register(&rose_linkfail_notifier);
1554
1555 #ifdef CONFIG_SYSCTL
1556 rose_register_sysctl();
1557 #endif
1558 rose_loopback_init();
1559
1560 rose_add_loopback_neigh();
1561
1562 proc_create_seq("rose", 0444, init_net.proc_net, &rose_info_seqops);
1563 proc_create_seq("rose_neigh", 0444, init_net.proc_net,
1564 &rose_neigh_seqops);
1565 proc_create_seq("rose_nodes", 0444, init_net.proc_net,
1566 &rose_node_seqops);
1567 proc_create_seq("rose_routes", 0444, init_net.proc_net,
1568 &rose_route_seqops);
1569 out:
1570 return rc;
1571 fail:
1572 while (--i >= 0) {
1573 unregister_netdev(dev_rose[i]);
1574 free_netdev(dev_rose[i]);
1575 }
1576 kfree(dev_rose);
1577 out_proto_unregister:
1578 proto_unregister(&rose_proto);
1579 goto out;
1580 }
1581 module_init(rose_proto_init);
1582
1583 module_param(rose_ndevs, int, 0);
1584 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1585
1586 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1587 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1588 MODULE_LICENSE("GPL");
1589 MODULE_ALIAS_NETPROTO(PF_ROSE);
1590
1591 static void __exit rose_exit(void)
1592 {
1593 int i;
1594
1595 remove_proc_entry("rose", init_net.proc_net);
1596 remove_proc_entry("rose_neigh", init_net.proc_net);
1597 remove_proc_entry("rose_nodes", init_net.proc_net);
1598 remove_proc_entry("rose_routes", init_net.proc_net);
1599 rose_loopback_clear();
1600
1601 rose_rt_free();
1602
1603 ax25_protocol_release(AX25_P_ROSE);
1604 ax25_linkfail_release(&rose_linkfail_notifier);
1605
1606 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1607 ax25_listen_release(&rose_callsign, NULL);
1608
1609 #ifdef CONFIG_SYSCTL
1610 rose_unregister_sysctl();
1611 #endif
1612 unregister_netdevice_notifier(&rose_dev_notifier);
1613
1614 sock_unregister(PF_ROSE);
1615
1616 for (i = 0; i < rose_ndevs; i++) {
1617 struct net_device *dev = dev_rose[i];
1618
1619 if (dev) {
1620 unregister_netdev(dev);
1621 free_netdev(dev);
1622 }
1623 }
1624
1625 kfree(dev_rose);
1626 proto_unregister(&rose_proto);
1627 }
1628
1629 module_exit(rose_exit);
1630
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