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Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6.git] / net / rose / af_rose.c
blobe98fcfbe6007919d6c114708cde848a649bb2e4e
1 /*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
8 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
9 * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net)
10 * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi)
11 */
12
13 #include <linux/capability.h>
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/types.h>
19 #include <linux/socket.h>
20 #include <linux/in.h>
21 #include <linux/slab.h>
22 #include <linux/kernel.h>
23 #include <linux/sched.h>
24 #include <linux/spinlock.h>
25 #include <linux/timer.h>
26 #include <linux/string.h>
27 #include <linux/sockios.h>
28 #include <linux/net.h>
29 #include <linux/stat.h>
30 #include <net/net_namespace.h>
31 #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>
37 #include <asm/uaccess.h>
38 #include <linux/fcntl.h>
39 #include <linux/termios.h>
40 #include <linux/mm.h>
41 #include <linux/interrupt.h>
42 #include <linux/notifier.h>
43 #include <net/rose.h>
44 #include <linux/proc_fs.h>
45 #include <linux/seq_file.h>
46 #include <net/tcp_states.h>
47 #include <net/ip.h>
48 #include <net/arp.h>
49
50 static int rose_ndevs = 10;
51
52 int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
53 int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1;
54 int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2;
55 int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3;
56 int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE;
57 int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB;
58 int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING;
59 int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT;
60 int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC;
61 int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE;
62
63 static HLIST_HEAD(rose_list);
64 static DEFINE_SPINLOCK(rose_list_lock);
65
66 static const struct proto_ops rose_proto_ops;
67
68 ax25_address rose_callsign;
69
70 /*
71 * ROSE network devices are virtual network devices encapsulating ROSE
72 * frames into AX.25 which will be sent through an AX.25 device, so form a
73 * special "super class" of normal net devices; split their locks off into a
74 * separate class since they always nest.
75 */
76 static struct lock_class_key rose_netdev_xmit_lock_key;
77 static struct lock_class_key rose_netdev_addr_lock_key;
78
79 static void rose_set_lockdep_one(struct net_device *dev,
80 struct netdev_queue *txq,
81 void *_unused)
82 {
83 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
84 }
85
86 static void rose_set_lockdep_key(struct net_device *dev)
87 {
88 lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key);
89 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
90 }
91
92 /*
93 * Convert a ROSE address into text.
94 */
95 char *rose2asc(char *buf, const rose_address *addr)
96 {
97 if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
98 addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
99 addr->rose_addr[4] == 0x00) {
100 strcpy(buf, "*");
101 } else {
102 sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
103 addr->rose_addr[1] & 0xFF,
104 addr->rose_addr[2] & 0xFF,
105 addr->rose_addr[3] & 0xFF,
106 addr->rose_addr[4] & 0xFF);
107 }
108
109 return buf;
110 }
111
112 /*
113 * Compare two ROSE addresses, 0 == equal.
114 */
115 int rosecmp(rose_address *addr1, rose_address *addr2)
116 {
117 int i;
118
119 for (i = 0; i < 5; i++)
120 if (addr1->rose_addr[i] != addr2->rose_addr[i])
121 return 1;
122
123 return 0;
124 }
125
126 /*
127 * Compare two ROSE addresses for only mask digits, 0 == equal.
128 */
129 int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
130 {
131 unsigned int i, j;
132
133 if (mask > 10)
134 return 1;
135
136 for (i = 0; i < mask; i++) {
137 j = i / 2;
138
139 if ((i % 2) != 0) {
140 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F))
141 return 1;
142 } else {
143 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0))
144 return 1;
145 }
146 }
147
148 return 0;
149 }
150
151 /*
152 * Socket removal during an interrupt is now safe.
153 */
154 static void rose_remove_socket(struct sock *sk)
155 {
156 spin_lock_bh(&rose_list_lock);
157 sk_del_node_init(sk);
158 spin_unlock_bh(&rose_list_lock);
159 }
160
161 /*
162 * Kill all bound sockets on a broken link layer connection to a
163 * particular neighbour.
164 */
165 void rose_kill_by_neigh(struct rose_neigh *neigh)
166 {
167 struct sock *s;
168
169 spin_lock_bh(&rose_list_lock);
170 sk_for_each(s, &rose_list) {
171 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 */
185 static void rose_kill_by_device(struct net_device *dev)
186 {
187 struct sock *s;
188
189 spin_lock_bh(&rose_list_lock);
190 sk_for_each(s, &rose_list) {
191 struct rose_sock *rose = rose_sk(s);
192
193 if (rose->device == dev) {
194 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
195 rose->neighbour->use--;
196 rose->device = NULL;
197 }
198 }
199 spin_unlock_bh(&rose_list_lock);
200 }
201
202 /*
203 * Handle device status changes.
204 */
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(unsigned long data)
321 {
322 rose_destroy_socket((struct sock *)data);
323 }
324
325 /*
326 * This is called from user mode and the timers. Thus it protects itself
327 * against interrupt users but doesn't worry about being called during
328 * work. Once it is removed from the queue no interrupt or bottom half
329 * will touch it and we are (fairly 8-) ) safe.
330 */
331 void rose_destroy_socket(struct sock *sk)
332 {
333 struct sk_buff *skb;
334
335 rose_remove_socket(sk);
336 rose_stop_heartbeat(sk);
337 rose_stop_idletimer(sk);
338 rose_stop_timer(sk);
339
340 rose_clear_queues(sk); /* Flush the queues */
341
342 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
343 if (skb->sk != sk) { /* A pending connection */
344 /* Queue the unaccepted socket for death */
345 sock_set_flag(skb->sk, SOCK_DEAD);
346 rose_start_heartbeat(skb->sk);
347 rose_sk(skb->sk)->state = ROSE_STATE_0;
348 }
349
350 kfree_skb(skb);
351 }
352
353 if (sk_has_allocations(sk)) {
354 /* Defer: outstanding buffers */
355 setup_timer(&sk->sk_timer, rose_destroy_timer,
356 (unsigned long)sk);
357 sk->sk_timer.expires = jiffies + 10 * HZ;
358 add_timer(&sk->sk_timer);
359 } else
360 sock_put(sk);
361 }
362
363 /*
364 * Handling for system calls applied via the various interfaces to a
365 * ROSE socket object.
366 */
367
368 static int rose_setsockopt(struct socket *sock, int level, int optname,
369 char __user *optval, unsigned int optlen)
370 {
371 struct sock *sk = sock->sk;
372 struct rose_sock *rose = rose_sk(sk);
373 int opt;
374
375 if (level != SOL_ROSE)
376 return -ENOPROTOOPT;
377
378 if (optlen < sizeof(int))
379 return -EINVAL;
380
381 if (get_user(opt, (int __user *)optval))
382 return -EFAULT;
383
384 switch (optname) {
385 case ROSE_DEFER:
386 rose->defer = opt ? 1 : 0;
387 return 0;
388
389 case ROSE_T1:
390 if (opt < 1)
391 return -EINVAL;
392 rose->t1 = opt * HZ;
393 return 0;
394
395 case ROSE_T2:
396 if (opt < 1)
397 return -EINVAL;
398 rose->t2 = opt * HZ;
399 return 0;
400
401 case ROSE_T3:
402 if (opt < 1)
403 return -EINVAL;
404 rose->t3 = opt * HZ;
405 return 0;
406
407 case ROSE_HOLDBACK:
408 if (opt < 1)
409 return -EINVAL;
410 rose->hb = opt * HZ;
411 return 0;
412
413 case ROSE_IDLE:
414 if (opt < 0)
415 return -EINVAL;
416 rose->idle = opt * 60 * HZ;
417 return 0;
418
419 case ROSE_QBITINCL:
420 rose->qbitincl = opt ? 1 : 0;
421 return 0;
422
423 default:
424 return -ENOPROTOOPT;
425 }
426 }
427
428 static int rose_getsockopt(struct socket *sock, int level, int optname,
429 char __user *optval, int __user *optlen)
430 {
431 struct sock *sk = sock->sk;
432 struct rose_sock *rose = rose_sk(sk);
433 int val = 0;
434 int len;
435
436 if (level != SOL_ROSE)
437 return -ENOPROTOOPT;
438
439 if (get_user(len, optlen))
440 return -EFAULT;
441
442 if (len < 0)
443 return -EINVAL;
444
445 switch (optname) {
446 case ROSE_DEFER:
447 val = rose->defer;
448 break;
449
450 case ROSE_T1:
451 val = rose->t1 / HZ;
452 break;
453
454 case ROSE_T2:
455 val = rose->t2 / HZ;
456 break;
457
458 case ROSE_T3:
459 val = rose->t3 / HZ;
460 break;
461
462 case ROSE_HOLDBACK:
463 val = rose->hb / HZ;
464 break;
465
466 case ROSE_IDLE:
467 val = rose->idle / (60 * HZ);
468 break;
469
470 case ROSE_QBITINCL:
471 val = rose->qbitincl;
472 break;
473
474 default:
475 return -ENOPROTOOPT;
476 }
477
478 len = min_t(unsigned int, len, sizeof(int));
479
480 if (put_user(len, optlen))
481 return -EFAULT;
482
483 return copy_to_user(optval, &val, len) ? -EFAULT : 0;
484 }
485
486 static int rose_listen(struct socket *sock, int backlog)
487 {
488 struct sock *sk = sock->sk;
489
490 if (sk->sk_state != TCP_LISTEN) {
491 struct rose_sock *rose = rose_sk(sk);
492
493 rose->dest_ndigis = 0;
494 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
495 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
496 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
497 sk->sk_max_ack_backlog = backlog;
498 sk->sk_state = TCP_LISTEN;
499 return 0;
500 }
501
502 return -EOPNOTSUPP;
503 }
504
505 static struct proto rose_proto = {
506 .name = "ROSE",
507 .owner = THIS_MODULE,
508 .obj_size = sizeof(struct rose_sock),
509 };
510
511 static int rose_create(struct net *net, struct socket *sock, int protocol,
512 int kern)
513 {
514 struct sock *sk;
515 struct rose_sock *rose;
516
517 if (!net_eq(net, &init_net))
518 return -EAFNOSUPPORT;
519
520 if (sock->type != SOCK_SEQPACKET || protocol != 0)
521 return -ESOCKTNOSUPPORT;
522
523 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
524 if (sk == NULL)
525 return -ENOMEM;
526
527 rose = rose_sk(sk);
528
529 sock_init_data(sock, sk);
530
531 skb_queue_head_init(&rose->ack_queue);
532 #ifdef M_BIT
533 skb_queue_head_init(&rose->frag_queue);
534 rose->fraglen = 0;
535 #endif
536
537 sock->ops = &rose_proto_ops;
538 sk->sk_protocol = protocol;
539
540 init_timer(&rose->timer);
541 init_timer(&rose->idletimer);
542
543 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
544 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
545 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
546 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
547 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
548
549 rose->state = ROSE_STATE_0;
550
551 return 0;
552 }
553
554 static struct sock *rose_make_new(struct sock *osk)
555 {
556 struct sock *sk;
557 struct rose_sock *rose, *orose;
558
559 if (osk->sk_type != SOCK_SEQPACKET)
560 return NULL;
561
562 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto);
563 if (sk == NULL)
564 return NULL;
565
566 rose = rose_sk(sk);
567
568 sock_init_data(NULL, sk);
569
570 skb_queue_head_init(&rose->ack_queue);
571 #ifdef M_BIT
572 skb_queue_head_init(&rose->frag_queue);
573 rose->fraglen = 0;
574 #endif
575
576 sk->sk_type = osk->sk_type;
577 sk->sk_priority = osk->sk_priority;
578 sk->sk_protocol = osk->sk_protocol;
579 sk->sk_rcvbuf = osk->sk_rcvbuf;
580 sk->sk_sndbuf = osk->sk_sndbuf;
581 sk->sk_state = TCP_ESTABLISHED;
582 sock_copy_flags(sk, osk);
583
584 init_timer(&rose->timer);
585 init_timer(&rose->idletimer);
586
587 orose = rose_sk(osk);
588 rose->t1 = orose->t1;
589 rose->t2 = orose->t2;
590 rose->t3 = orose->t3;
591 rose->hb = orose->hb;
592 rose->idle = orose->idle;
593 rose->defer = orose->defer;
594 rose->device = orose->device;
595 rose->qbitincl = orose->qbitincl;
596
597 return sk;
598 }
599
600 static int rose_release(struct socket *sock)
601 {
602 struct sock *sk = sock->sk;
603 struct rose_sock *rose;
604
605 if (sk == NULL) return 0;
606
607 sock_hold(sk);
608 sock_orphan(sk);
609 lock_sock(sk);
610 rose = rose_sk(sk);
611
612 switch (rose->state) {
613 case ROSE_STATE_0:
614 release_sock(sk);
615 rose_disconnect(sk, 0, -1, -1);
616 lock_sock(sk);
617 rose_destroy_socket(sk);
618 break;
619
620 case ROSE_STATE_2:
621 rose->neighbour->use--;
622 release_sock(sk);
623 rose_disconnect(sk, 0, -1, -1);
624 lock_sock(sk);
625 rose_destroy_socket(sk);
626 break;
627
628 case ROSE_STATE_1:
629 case ROSE_STATE_3:
630 case ROSE_STATE_4:
631 case ROSE_STATE_5:
632 rose_clear_queues(sk);
633 rose_stop_idletimer(sk);
634 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
635 rose_start_t3timer(sk);
636 rose->state = ROSE_STATE_2;
637 sk->sk_state = TCP_CLOSE;
638 sk->sk_shutdown |= SEND_SHUTDOWN;
639 sk->sk_state_change(sk);
640 sock_set_flag(sk, SOCK_DEAD);
641 sock_set_flag(sk, SOCK_DESTROY);
642 break;
643
644 default:
645 break;
646 }
647
648 sock->sk = NULL;
649 release_sock(sk);
650 sock_put(sk);
651
652 return 0;
653 }
654
655 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
656 {
657 struct sock *sk = sock->sk;
658 struct rose_sock *rose = rose_sk(sk);
659 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
660 struct net_device *dev;
661 ax25_address *source;
662 ax25_uid_assoc *user;
663 int n;
664
665 if (!sock_flag(sk, SOCK_ZAPPED))
666 return -EINVAL;
667
668 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
669 return -EINVAL;
670
671 if (addr->srose_family != AF_ROSE)
672 return -EINVAL;
673
674 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
675 return -EINVAL;
676
677 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
678 return -EINVAL;
679
680 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL)
681 return -EADDRNOTAVAIL;
682
683 source = &addr->srose_call;
684
685 user = ax25_findbyuid(current_euid());
686 if (user) {
687 rose->source_call = user->call;
688 ax25_uid_put(user);
689 } else {
690 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
691 return -EACCES;
692 rose->source_call = *source;
693 }
694
695 rose->source_addr = addr->srose_addr;
696 rose->device = dev;
697 rose->source_ndigis = addr->srose_ndigis;
698
699 if (addr_len == sizeof(struct full_sockaddr_rose)) {
700 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
701 for (n = 0 ; n < addr->srose_ndigis ; n++)
702 rose->source_digis[n] = full_addr->srose_digis[n];
703 } else {
704 if (rose->source_ndigis == 1) {
705 rose->source_digis[0] = addr->srose_digi;
706 }
707 }
708
709 rose_insert_socket(sk);
710
711 sock_reset_flag(sk, SOCK_ZAPPED);
712
713 return 0;
714 }
715
716 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
717 {
718 struct sock *sk = sock->sk;
719 struct rose_sock *rose = rose_sk(sk);
720 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
721 unsigned char cause, diagnostic;
722 struct net_device *dev;
723 ax25_uid_assoc *user;
724 int n, err = 0;
725
726 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
727 return -EINVAL;
728
729 if (addr->srose_family != AF_ROSE)
730 return -EINVAL;
731
732 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
733 return -EINVAL;
734
735 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
736 return -EINVAL;
737
738 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
739 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
740 return -EINVAL;
741
742 lock_sock(sk);
743
744 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
745 /* Connect completed during a ERESTARTSYS event */
746 sock->state = SS_CONNECTED;
747 goto out_release;
748 }
749
750 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
751 sock->state = SS_UNCONNECTED;
752 err = -ECONNREFUSED;
753 goto out_release;
754 }
755
756 if (sk->sk_state == TCP_ESTABLISHED) {
757 /* No reconnect on a seqpacket socket */
758 err = -EISCONN;
759 goto out_release;
760 }
761
762 sk->sk_state = TCP_CLOSE;
763 sock->state = SS_UNCONNECTED;
764
765 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
766 &diagnostic, 0);
767 if (!rose->neighbour) {
768 err = -ENETUNREACH;
769 goto out_release;
770 }
771
772 rose->lci = rose_new_lci(rose->neighbour);
773 if (!rose->lci) {
774 err = -ENETUNREACH;
775 goto out_release;
776 }
777
778 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
779 sock_reset_flag(sk, SOCK_ZAPPED);
780
781 if ((dev = rose_dev_first()) == NULL) {
782 err = -ENETUNREACH;
783 goto out_release;
784 }
785
786 user = ax25_findbyuid(current_euid());
787 if (!user) {
788 err = -EINVAL;
789 goto out_release;
790 }
791
792 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
793 rose->source_call = user->call;
794 rose->device = dev;
795 ax25_uid_put(user);
796
797 rose_insert_socket(sk); /* Finish the bind */
798 }
799 rose->dest_addr = addr->srose_addr;
800 rose->dest_call = addr->srose_call;
801 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
802 rose->dest_ndigis = addr->srose_ndigis;
803
804 if (addr_len == sizeof(struct full_sockaddr_rose)) {
805 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
806 for (n = 0 ; n < addr->srose_ndigis ; n++)
807 rose->dest_digis[n] = full_addr->srose_digis[n];
808 } else {
809 if (rose->dest_ndigis == 1) {
810 rose->dest_digis[0] = addr->srose_digi;
811 }
812 }
813
814 /* Move to connecting socket, start sending Connect Requests */
815 sock->state = SS_CONNECTING;
816 sk->sk_state = TCP_SYN_SENT;
817
818 rose->state = ROSE_STATE_1;
819
820 rose->neighbour->use++;
821
822 rose_write_internal(sk, ROSE_CALL_REQUEST);
823 rose_start_heartbeat(sk);
824 rose_start_t1timer(sk);
825
826 /* Now the loop */
827 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
828 err = -EINPROGRESS;
829 goto out_release;
830 }
831
832 /*
833 * A Connect Ack with Choke or timeout or failed routing will go to
834 * closed.
835 */
836 if (sk->sk_state == TCP_SYN_SENT) {
837 DEFINE_WAIT(wait);
838
839 for (;;) {
840 prepare_to_wait(sk_sleep(sk), &wait,
841 TASK_INTERRUPTIBLE);
842 if (sk->sk_state != TCP_SYN_SENT)
843 break;
844 if (!signal_pending(current)) {
845 release_sock(sk);
846 schedule();
847 lock_sock(sk);
848 continue;
849 }
850 err = -ERESTARTSYS;
851 break;
852 }
853 finish_wait(sk_sleep(sk), &wait);
854
855 if (err)
856 goto out_release;
857 }
858
859 if (sk->sk_state != TCP_ESTABLISHED) {
860 sock->state = SS_UNCONNECTED;
861 err = sock_error(sk); /* Always set at this point */
862 goto out_release;
863 }
864
865 sock->state = SS_CONNECTED;
866
867 out_release:
868 release_sock(sk);
869
870 return err;
871 }
872
873 static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
874 {
875 struct sk_buff *skb;
876 struct sock *newsk;
877 DEFINE_WAIT(wait);
878 struct sock *sk;
879 int err = 0;
880
881 if ((sk = sock->sk) == NULL)
882 return -EINVAL;
883
884 lock_sock(sk);
885 if (sk->sk_type != SOCK_SEQPACKET) {
886 err = -EOPNOTSUPP;
887 goto out_release;
888 }
889
890 if (sk->sk_state != TCP_LISTEN) {
891 err = -EINVAL;
892 goto out_release;
893 }
894
895 /*
896 * The write queue this time is holding sockets ready to use
897 * hooked into the SABM we saved
898 */
899 for (;;) {
900 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
901
902 skb = skb_dequeue(&sk->sk_receive_queue);
903 if (skb)
904 break;
905
906 if (flags & O_NONBLOCK) {
907 err = -EWOULDBLOCK;
908 break;
909 }
910 if (!signal_pending(current)) {
911 release_sock(sk);
912 schedule();
913 lock_sock(sk);
914 continue;
915 }
916 err = -ERESTARTSYS;
917 break;
918 }
919 finish_wait(sk_sleep(sk), &wait);
920 if (err)
921 goto out_release;
922
923 newsk = skb->sk;
924 sock_graft(newsk, newsock);
925
926 /* Now attach up the new socket */
927 skb->sk = NULL;
928 kfree_skb(skb);
929 sk->sk_ack_backlog--;
930
931 out_release:
932 release_sock(sk);
933
934 return err;
935 }
936
937 static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
938 int *uaddr_len, int peer)
939 {
940 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
941 struct sock *sk = sock->sk;
942 struct rose_sock *rose = rose_sk(sk);
943 int n;
944
945 memset(srose, 0, sizeof(*srose));
946 if (peer != 0) {
947 if (sk->sk_state != TCP_ESTABLISHED)
948 return -ENOTCONN;
949 srose->srose_family = AF_ROSE;
950 srose->srose_addr = rose->dest_addr;
951 srose->srose_call = rose->dest_call;
952 srose->srose_ndigis = rose->dest_ndigis;
953 for (n = 0; n < rose->dest_ndigis; n++)
954 srose->srose_digis[n] = rose->dest_digis[n];
955 } else {
956 srose->srose_family = AF_ROSE;
957 srose->srose_addr = rose->source_addr;
958 srose->srose_call = rose->source_call;
959 srose->srose_ndigis = rose->source_ndigis;
960 for (n = 0; n < rose->source_ndigis; n++)
961 srose->srose_digis[n] = rose->source_digis[n];
962 }
963
964 *uaddr_len = sizeof(struct full_sockaddr_rose);
965 return 0;
966 }
967
968 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
969 {
970 struct sock *sk;
971 struct sock *make;
972 struct rose_sock *make_rose;
973 struct rose_facilities_struct facilities;
974 int n;
975
976 skb->sk = NULL; /* Initially we don't know who it's for */
977
978 /*
979 * skb->data points to the rose frame start
980 */
981 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
982
983 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF,
984 skb->len - ROSE_CALL_REQ_FACILITIES_OFF,
985 &facilities)) {
986 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
987 return 0;
988 }
989
990 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
991
992 /*
993 * We can't accept the Call Request.
994 */
995 if (sk == NULL || sk_acceptq_is_full(sk) ||
996 (make = rose_make_new(sk)) == NULL) {
997 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
998 return 0;
999 }
1000
1001 skb->sk = make;
1002 make->sk_state = TCP_ESTABLISHED;
1003 make_rose = rose_sk(make);
1004
1005 make_rose->lci = lci;
1006 make_rose->dest_addr = facilities.dest_addr;
1007 make_rose->dest_call = facilities.dest_call;
1008 make_rose->dest_ndigis = facilities.dest_ndigis;
1009 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1010 make_rose->dest_digis[n] = facilities.dest_digis[n];
1011 make_rose->source_addr = facilities.source_addr;
1012 make_rose->source_call = facilities.source_call;
1013 make_rose->source_ndigis = facilities.source_ndigis;
1014 for (n = 0 ; n < facilities.source_ndigis ; n++)
1015 make_rose->source_digis[n]= facilities.source_digis[n];
1016 make_rose->neighbour = neigh;
1017 make_rose->device = dev;
1018 make_rose->facilities = facilities;
1019
1020 make_rose->neighbour->use++;
1021
1022 if (rose_sk(sk)->defer) {
1023 make_rose->state = ROSE_STATE_5;
1024 } else {
1025 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1026 make_rose->state = ROSE_STATE_3;
1027 rose_start_idletimer(make);
1028 }
1029
1030 make_rose->condition = 0x00;
1031 make_rose->vs = 0;
1032 make_rose->va = 0;
1033 make_rose->vr = 0;
1034 make_rose->vl = 0;
1035 sk->sk_ack_backlog++;
1036
1037 rose_insert_socket(make);
1038
1039 skb_queue_head(&sk->sk_receive_queue, skb);
1040
1041 rose_start_heartbeat(make);
1042
1043 if (!sock_flag(sk, SOCK_DEAD))
1044 sk->sk_data_ready(sk, skb->len);
1045
1046 return 1;
1047 }
1048
1049 static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
1050 struct msghdr *msg, size_t len)
1051 {
1052 struct sock *sk = sock->sk;
1053 struct rose_sock *rose = rose_sk(sk);
1054 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1055 int err;
1056 struct full_sockaddr_rose srose;
1057 struct sk_buff *skb;
1058 unsigned char *asmptr;
1059 int n, size, qbit = 0;
1060
1061 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1062 return -EINVAL;
1063
1064 if (sock_flag(sk, SOCK_ZAPPED))
1065 return -EADDRNOTAVAIL;
1066
1067 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1068 send_sig(SIGPIPE, current, 0);
1069 return -EPIPE;
1070 }
1071
1072 if (rose->neighbour == NULL || rose->device == NULL)
1073 return -ENETUNREACH;
1074
1075 if (usrose != NULL) {
1076 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1077 return -EINVAL;
1078 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1079 memcpy(&srose, usrose, msg->msg_namelen);
1080 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1081 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1082 return -EISCONN;
1083 if (srose.srose_ndigis != rose->dest_ndigis)
1084 return -EISCONN;
1085 if (srose.srose_ndigis == rose->dest_ndigis) {
1086 for (n = 0 ; n < srose.srose_ndigis ; n++)
1087 if (ax25cmp(&rose->dest_digis[n],
1088 &srose.srose_digis[n]))
1089 return -EISCONN;
1090 }
1091 if (srose.srose_family != AF_ROSE)
1092 return -EINVAL;
1093 } else {
1094 if (sk->sk_state != TCP_ESTABLISHED)
1095 return -ENOTCONN;
1096
1097 srose.srose_family = AF_ROSE;
1098 srose.srose_addr = rose->dest_addr;
1099 srose.srose_call = rose->dest_call;
1100 srose.srose_ndigis = rose->dest_ndigis;
1101 for (n = 0 ; n < rose->dest_ndigis ; n++)
1102 srose.srose_digis[n] = rose->dest_digis[n];
1103 }
1104
1105 /* Build a packet */
1106 /* Sanity check the packet size */
1107 if (len > 65535)
1108 return -EMSGSIZE;
1109
1110 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1111
1112 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1113 return err;
1114
1115 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1116
1117 /*
1118 * Put the data on the end
1119 */
1120
1121 skb_reset_transport_header(skb);
1122 skb_put(skb, len);
1123
1124 err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1125 if (err) {
1126 kfree_skb(skb);
1127 return err;
1128 }
1129
1130 /*
1131 * If the Q BIT Include socket option is in force, the first
1132 * byte of the user data is the logical value of the Q Bit.
1133 */
1134 if (rose->qbitincl) {
1135 qbit = skb->data[0];
1136 skb_pull(skb, 1);
1137 }
1138
1139 /*
1140 * Push down the ROSE header
1141 */
1142 asmptr = skb_push(skb, ROSE_MIN_LEN);
1143
1144 /* Build a ROSE Network header */
1145 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1146 asmptr[1] = (rose->lci >> 0) & 0xFF;
1147 asmptr[2] = ROSE_DATA;
1148
1149 if (qbit)
1150 asmptr[0] |= ROSE_Q_BIT;
1151
1152 if (sk->sk_state != TCP_ESTABLISHED) {
1153 kfree_skb(skb);
1154 return -ENOTCONN;
1155 }
1156
1157 #ifdef M_BIT
1158 #define ROSE_PACLEN (256-ROSE_MIN_LEN)
1159 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1160 unsigned char header[ROSE_MIN_LEN];
1161 struct sk_buff *skbn;
1162 int frontlen;
1163 int lg;
1164
1165 /* Save a copy of the Header */
1166 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
1167 skb_pull(skb, ROSE_MIN_LEN);
1168
1169 frontlen = skb_headroom(skb);
1170
1171 while (skb->len > 0) {
1172 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1173 kfree_skb(skb);
1174 return err;
1175 }
1176
1177 skbn->sk = sk;
1178 skbn->free = 1;
1179 skbn->arp = 1;
1180
1181 skb_reserve(skbn, frontlen);
1182
1183 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1184
1185 /* Copy the user data */
1186 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
1187 skb_pull(skb, lg);
1188
1189 /* Duplicate the Header */
1190 skb_push(skbn, ROSE_MIN_LEN);
1191 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
1192
1193 if (skb->len > 0)
1194 skbn->data[2] |= M_BIT;
1195
1196 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1197 }
1198
1199 skb->free = 1;
1200 kfree_skb(skb);
1201 } else {
1202 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1203 }
1204 #else
1205 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1206 #endif
1207
1208 rose_kick(sk);
1209
1210 return len;
1211 }
1212
1213
1214 static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1215 struct msghdr *msg, size_t size, int flags)
1216 {
1217 struct sock *sk = sock->sk;
1218 struct rose_sock *rose = rose_sk(sk);
1219 struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
1220 size_t copied;
1221 unsigned char *asmptr;
1222 struct sk_buff *skb;
1223 int n, er, qbit;
1224
1225 /*
1226 * This works for seqpacket too. The receiver has ordered the queue for
1227 * us! We do one quick check first though
1228 */
1229 if (sk->sk_state != TCP_ESTABLISHED)
1230 return -ENOTCONN;
1231
1232 /* Now we can treat all alike */
1233 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1234 return er;
1235
1236 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1237
1238 skb_pull(skb, ROSE_MIN_LEN);
1239
1240 if (rose->qbitincl) {
1241 asmptr = skb_push(skb, 1);
1242 *asmptr = qbit;
1243 }
1244
1245 skb_reset_transport_header(skb);
1246 copied = skb->len;
1247
1248 if (copied > size) {
1249 copied = size;
1250 msg->msg_flags |= MSG_TRUNC;
1251 }
1252
1253 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1254
1255 if (srose != NULL) {
1256 memset(srose, 0, msg->msg_namelen);
1257 srose->srose_family = AF_ROSE;
1258 srose->srose_addr = rose->dest_addr;
1259 srose->srose_call = rose->dest_call;
1260 srose->srose_ndigis = rose->dest_ndigis;
1261 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
1262 struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
1263 for (n = 0 ; n < rose->dest_ndigis ; n++)
1264 full_srose->srose_digis[n] = rose->dest_digis[n];
1265 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1266 } else {
1267 if (rose->dest_ndigis >= 1) {
1268 srose->srose_ndigis = 1;
1269 srose->srose_digi = rose->dest_digis[0];
1270 }
1271 msg->msg_namelen = sizeof(struct sockaddr_rose);
1272 }
1273 }
1274
1275 skb_free_datagram(sk, skb);
1276
1277 return copied;
1278 }
1279
1280
1281 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1282 {
1283 struct sock *sk = sock->sk;
1284 struct rose_sock *rose = rose_sk(sk);
1285 void __user *argp = (void __user *)arg;
1286
1287 switch (cmd) {
1288 case TIOCOUTQ: {
1289 long amount;
1290
1291 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
1292 if (amount < 0)
1293 amount = 0;
1294 return put_user(amount, (unsigned int __user *) argp);
1295 }
1296
1297 case TIOCINQ: {
1298 struct sk_buff *skb;
1299 long amount = 0L;
1300 /* These two are safe on a single CPU system as only user tasks fiddle here */
1301 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1302 amount = skb->len;
1303 return put_user(amount, (unsigned int __user *) argp);
1304 }
1305
1306 case SIOCGSTAMP:
1307 return sock_get_timestamp(sk, (struct timeval __user *) argp);
1308
1309 case SIOCGSTAMPNS:
1310 return sock_get_timestampns(sk, (struct timespec __user *) argp);
1311
1312 case SIOCGIFADDR:
1313 case SIOCSIFADDR:
1314 case SIOCGIFDSTADDR:
1315 case SIOCSIFDSTADDR:
1316 case SIOCGIFBRDADDR:
1317 case SIOCSIFBRDADDR:
1318 case SIOCGIFNETMASK:
1319 case SIOCSIFNETMASK:
1320 case SIOCGIFMETRIC:
1321 case SIOCSIFMETRIC:
1322 return -EINVAL;
1323
1324 case SIOCADDRT:
1325 case SIOCDELRT:
1326 case SIOCRSCLRRT:
1327 if (!capable(CAP_NET_ADMIN))
1328 return -EPERM;
1329 return rose_rt_ioctl(cmd, argp);
1330
1331 case SIOCRSGCAUSE: {
1332 struct rose_cause_struct rose_cause;
1333 rose_cause.cause = rose->cause;
1334 rose_cause.diagnostic = rose->diagnostic;
1335 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1336 }
1337
1338 case SIOCRSSCAUSE: {
1339 struct rose_cause_struct rose_cause;
1340 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1341 return -EFAULT;
1342 rose->cause = rose_cause.cause;
1343 rose->diagnostic = rose_cause.diagnostic;
1344 return 0;
1345 }
1346
1347 case SIOCRSSL2CALL:
1348 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1349 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1350 ax25_listen_release(&rose_callsign, NULL);
1351 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1352 return -EFAULT;
1353 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1354 return ax25_listen_register(&rose_callsign, NULL);
1355
1356 return 0;
1357
1358 case SIOCRSGL2CALL:
1359 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1360
1361 case SIOCRSACCEPT:
1362 if (rose->state == ROSE_STATE_5) {
1363 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1364 rose_start_idletimer(sk);
1365 rose->condition = 0x00;
1366 rose->vs = 0;
1367 rose->va = 0;
1368 rose->vr = 0;
1369 rose->vl = 0;
1370 rose->state = ROSE_STATE_3;
1371 }
1372 return 0;
1373
1374 default:
1375 return -ENOIOCTLCMD;
1376 }
1377
1378 return 0;
1379 }
1380
1381 #ifdef CONFIG_PROC_FS
1382 static void *rose_info_start(struct seq_file *seq, loff_t *pos)
1383 __acquires(rose_list_lock)
1384 {
1385 spin_lock_bh(&rose_list_lock);
1386 return seq_hlist_start_head(&rose_list, *pos);
1387 }
1388
1389 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1390 {
1391 return seq_hlist_next(v, &rose_list, pos);
1392 }
1393
1394 static void rose_info_stop(struct seq_file *seq, void *v)
1395 __releases(rose_list_lock)
1396 {
1397 spin_unlock_bh(&rose_list_lock);
1398 }
1399
1400 static int rose_info_show(struct seq_file *seq, void *v)
1401 {
1402 char buf[11], rsbuf[11];
1403
1404 if (v == SEQ_START_TOKEN)
1405 seq_puts(seq,
1406 "dest_addr dest_call src_addr src_call dev lci neigh st vs vr va t t1 t2 t3 hb idle Snd-Q Rcv-Q inode\n");
1407
1408 else {
1409 struct sock *s = sk_entry(v);
1410 struct rose_sock *rose = rose_sk(s);
1411 const char *devname, *callsign;
1412 const struct net_device *dev = rose->device;
1413
1414 if (!dev)
1415 devname = "???";
1416 else
1417 devname = dev->name;
1418
1419 seq_printf(seq, "%-10s %-9s ",
1420 rose2asc(rsbuf, &rose->dest_addr),
1421 ax2asc(buf, &rose->dest_call));
1422
1423 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1424 callsign = "??????-?";
1425 else
1426 callsign = ax2asc(buf, &rose->source_call);
1427
1428 seq_printf(seq,
1429 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
1430 rose2asc(rsbuf, &rose->source_addr),
1431 callsign,
1432 devname,
1433 rose->lci & 0x0FFF,
1434 (rose->neighbour) ? rose->neighbour->number : 0,
1435 rose->state,
1436 rose->vs,
1437 rose->vr,
1438 rose->va,
1439 ax25_display_timer(&rose->timer) / HZ,
1440 rose->t1 / HZ,
1441 rose->t2 / HZ,
1442 rose->t3 / HZ,
1443 rose->hb / HZ,
1444 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1445 rose->idle / (60 * HZ),
1446 sk_wmem_alloc_get(s),
1447 sk_rmem_alloc_get(s),
1448 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1449 }
1450
1451 return 0;
1452 }
1453
1454 static const struct seq_operations rose_info_seqops = {
1455 .start = rose_info_start,
1456 .next = rose_info_next,
1457 .stop = rose_info_stop,
1458 .show = rose_info_show,
1459 };
1460
1461 static int rose_info_open(struct inode *inode, struct file *file)
1462 {
1463 return seq_open(file, &rose_info_seqops);
1464 }
1465
1466 static const struct file_operations rose_info_fops = {
1467 .owner = THIS_MODULE,
1468 .open = rose_info_open,
1469 .read = seq_read,
1470 .llseek = seq_lseek,
1471 .release = seq_release,
1472 };
1473 #endif /* CONFIG_PROC_FS */
1474
1475 static const struct net_proto_family rose_family_ops = {
1476 .family = PF_ROSE,
1477 .create = rose_create,
1478 .owner = THIS_MODULE,
1479 };
1480
1481 static const struct proto_ops rose_proto_ops = {
1482 .family = PF_ROSE,
1483 .owner = THIS_MODULE,
1484 .release = rose_release,
1485 .bind = rose_bind,
1486 .connect = rose_connect,
1487 .socketpair = sock_no_socketpair,
1488 .accept = rose_accept,
1489 .getname = rose_getname,
1490 .poll = datagram_poll,
1491 .ioctl = rose_ioctl,
1492 .listen = rose_listen,
1493 .shutdown = sock_no_shutdown,
1494 .setsockopt = rose_setsockopt,
1495 .getsockopt = rose_getsockopt,
1496 .sendmsg = rose_sendmsg,
1497 .recvmsg = rose_recvmsg,
1498 .mmap = sock_no_mmap,
1499 .sendpage = sock_no_sendpage,
1500 };
1501
1502 static struct notifier_block rose_dev_notifier = {
1503 .notifier_call = rose_device_event,
1504 };
1505
1506 static struct net_device **dev_rose;
1507
1508 static struct ax25_protocol rose_pid = {
1509 .pid = AX25_P_ROSE,
1510 .func = rose_route_frame
1511 };
1512
1513 static struct ax25_linkfail rose_linkfail_notifier = {
1514 .func = rose_link_failed
1515 };
1516
1517 static int __init rose_proto_init(void)
1518 {
1519 int i;
1520 int rc;
1521
1522 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1523 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1524 rc = -EINVAL;
1525 goto out;
1526 }
1527
1528 rc = proto_register(&rose_proto, 0);
1529 if (rc != 0)
1530 goto out;
1531
1532 rose_callsign = null_ax25_address;
1533
1534 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
1535 if (dev_rose == NULL) {
1536 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
1537 rc = -ENOMEM;
1538 goto out_proto_unregister;
1539 }
1540
1541 for (i = 0; i < rose_ndevs; i++) {
1542 struct net_device *dev;
1543 char name[IFNAMSIZ];
1544
1545 sprintf(name, "rose%d", i);
1546 dev = alloc_netdev(0, name, rose_setup);
1547 if (!dev) {
1548 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
1549 rc = -ENOMEM;
1550 goto fail;
1551 }
1552 rc = register_netdev(dev);
1553 if (rc) {
1554 printk(KERN_ERR "ROSE: netdevice registration failed\n");
1555 free_netdev(dev);
1556 goto fail;
1557 }
1558 rose_set_lockdep_key(dev);
1559 dev_rose[i] = dev;
1560 }
1561
1562 sock_register(&rose_family_ops);
1563 register_netdevice_notifier(&rose_dev_notifier);
1564
1565 ax25_register_pid(&rose_pid);
1566 ax25_linkfail_register(&rose_linkfail_notifier);
1567
1568 #ifdef CONFIG_SYSCTL
1569 rose_register_sysctl();
1570 #endif
1571 rose_loopback_init();
1572
1573 rose_add_loopback_neigh();
1574
1575 proc_create("rose", S_IRUGO, init_net.proc_net, &rose_info_fops);
1576 proc_create("rose_neigh", S_IRUGO, init_net.proc_net,
1577 &rose_neigh_fops);
1578 proc_create("rose_nodes", S_IRUGO, init_net.proc_net,
1579 &rose_nodes_fops);
1580 proc_create("rose_routes", S_IRUGO, init_net.proc_net,
1581 &rose_routes_fops);
1582 out:
1583 return rc;
1584 fail:
1585 while (--i >= 0) {
1586 unregister_netdev(dev_rose[i]);
1587 free_netdev(dev_rose[i]);
1588 }
1589 kfree(dev_rose);
1590 out_proto_unregister:
1591 proto_unregister(&rose_proto);
1592 goto out;
1593 }
1594 module_init(rose_proto_init);
1595
1596 module_param(rose_ndevs, int, 0);
1597 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1598
1599 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1600 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1601 MODULE_LICENSE("GPL");
1602 MODULE_ALIAS_NETPROTO(PF_ROSE);
1603
1604 static void __exit rose_exit(void)
1605 {
1606 int i;
1607
1608 remove_proc_entry("rose", init_net.proc_net);
1609 remove_proc_entry("rose_neigh", init_net.proc_net);
1610 remove_proc_entry("rose_nodes", init_net.proc_net);
1611 remove_proc_entry("rose_routes", init_net.proc_net);
1612 rose_loopback_clear();
1613
1614 rose_rt_free();
1615
1616 ax25_protocol_release(AX25_P_ROSE);
1617 ax25_linkfail_release(&rose_linkfail_notifier);
1618
1619 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1620 ax25_listen_release(&rose_callsign, NULL);
1621
1622 #ifdef CONFIG_SYSCTL
1623 rose_unregister_sysctl();
1624 #endif
1625 unregister_netdevice_notifier(&rose_dev_notifier);
1626
1627 sock_unregister(PF_ROSE);
1628
1629 for (i = 0; i < rose_ndevs; i++) {
1630 struct net_device *dev = dev_rose[i];
1631
1632 if (dev) {
1633 unregister_netdev(dev);
1634 free_netdev(dev);
1635 }
1636 }
1637
1638 kfree(dev_rose);
1639 proto_unregister(&rose_proto);
1640 }
1641
1642 module_exit(rose_exit);
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