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Merge branch 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / rose / af_rose.c
blobf9ea925ad9cb6c1628bf6f38a57c4f49c210b589
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/system.h>
38 #include <asm/uaccess.h>
39 #include <linux/fcntl.h>
40 #include <linux/termios.h>
41 #include <linux/mm.h>
42 #include <linux/interrupt.h>
43 #include <linux/notifier.h>
44 #include <net/rose.h>
45 #include <linux/proc_fs.h>
46 #include <linux/seq_file.h>
47 #include <net/tcp_states.h>
48 #include <net/ip.h>
49 #include <net/arp.h>
50
51 static int rose_ndevs = 10;
52
53 int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
54 int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1;
55 int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2;
56 int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3;
57 int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE;
58 int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB;
59 int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING;
60 int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT;
61 int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC;
62 int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE;
63
64 static HLIST_HEAD(rose_list);
65 static DEFINE_SPINLOCK(rose_list_lock);
66
67 static const struct proto_ops rose_proto_ops;
68
69 ax25_address rose_callsign;
70
71 /*
72 * ROSE network devices are virtual network devices encapsulating ROSE
73 * frames into AX.25 which will be sent through an AX.25 device, so form a
74 * special "super class" of normal net devices; split their locks off into a
75 * separate class since they always nest.
76 */
77 static struct lock_class_key rose_netdev_xmit_lock_key;
78 static struct lock_class_key rose_netdev_addr_lock_key;
79
80 static void rose_set_lockdep_one(struct net_device *dev,
81 struct netdev_queue *txq,
82 void *_unused)
83 {
84 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
85 }
86
87 static void rose_set_lockdep_key(struct net_device *dev)
88 {
89 lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key);
90 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
91 }
92
93 /*
94 * Convert a ROSE address into text.
95 */
96 char *rose2asc(char *buf, const rose_address *addr)
97 {
98 if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
99 addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
100 addr->rose_addr[4] == 0x00) {
101 strcpy(buf, "*");
102 } else {
103 sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
104 addr->rose_addr[1] & 0xFF,
105 addr->rose_addr[2] & 0xFF,
106 addr->rose_addr[3] & 0xFF,
107 addr->rose_addr[4] & 0xFF);
108 }
109
110 return buf;
111 }
112
113 /*
114 * Compare two ROSE addresses, 0 == equal.
115 */
116 int rosecmp(rose_address *addr1, rose_address *addr2)
117 {
118 int i;
119
120 for (i = 0; i < 5; i++)
121 if (addr1->rose_addr[i] != addr2->rose_addr[i])
122 return 1;
123
124 return 0;
125 }
126
127 /*
128 * Compare two ROSE addresses for only mask digits, 0 == equal.
129 */
130 int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
131 {
132 unsigned int i, j;
133
134 if (mask > 10)
135 return 1;
136
137 for (i = 0; i < mask; i++) {
138 j = i / 2;
139
140 if ((i % 2) != 0) {
141 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F))
142 return 1;
143 } else {
144 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0))
145 return 1;
146 }
147 }
148
149 return 0;
150 }
151
152 /*
153 * Socket removal during an interrupt is now safe.
154 */
155 static void rose_remove_socket(struct sock *sk)
156 {
157 spin_lock_bh(&rose_list_lock);
158 sk_del_node_init(sk);
159 spin_unlock_bh(&rose_list_lock);
160 }
161
162 /*
163 * Kill all bound sockets on a broken link layer connection to a
164 * particular neighbour.
165 */
166 void rose_kill_by_neigh(struct rose_neigh *neigh)
167 {
168 struct sock *s;
169 struct hlist_node *node;
170
171 spin_lock_bh(&rose_list_lock);
172 sk_for_each(s, node, &rose_list) {
173 struct rose_sock *rose = rose_sk(s);
174
175 if (rose->neighbour == neigh) {
176 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
177 rose->neighbour->use--;
178 rose->neighbour = NULL;
179 }
180 }
181 spin_unlock_bh(&rose_list_lock);
182 }
183
184 /*
185 * Kill all bound sockets on a dropped device.
186 */
187 static void rose_kill_by_device(struct net_device *dev)
188 {
189 struct sock *s;
190 struct hlist_node *node;
191
192 spin_lock_bh(&rose_list_lock);
193 sk_for_each(s, node, &rose_list) {
194 struct rose_sock *rose = rose_sk(s);
195
196 if (rose->device == dev) {
197 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
198 rose->neighbour->use--;
199 rose->device = NULL;
200 }
201 }
202 spin_unlock_bh(&rose_list_lock);
203 }
204
205 /*
206 * Handle device status changes.
207 */
208 static int rose_device_event(struct notifier_block *this, unsigned long event,
209 void *ptr)
210 {
211 struct net_device *dev = (struct net_device *)ptr;
212
213 if (!net_eq(dev_net(dev), &init_net))
214 return NOTIFY_DONE;
215
216 if (event != NETDEV_DOWN)
217 return NOTIFY_DONE;
218
219 switch (dev->type) {
220 case ARPHRD_ROSE:
221 rose_kill_by_device(dev);
222 break;
223 case ARPHRD_AX25:
224 rose_link_device_down(dev);
225 rose_rt_device_down(dev);
226 break;
227 }
228
229 return NOTIFY_DONE;
230 }
231
232 /*
233 * Add a socket to the bound sockets list.
234 */
235 static void rose_insert_socket(struct sock *sk)
236 {
237
238 spin_lock_bh(&rose_list_lock);
239 sk_add_node(sk, &rose_list);
240 spin_unlock_bh(&rose_list_lock);
241 }
242
243 /*
244 * Find a socket that wants to accept the Call Request we just
245 * received.
246 */
247 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
248 {
249 struct sock *s;
250 struct hlist_node *node;
251
252 spin_lock_bh(&rose_list_lock);
253 sk_for_each(s, node, &rose_list) {
254 struct rose_sock *rose = rose_sk(s);
255
256 if (!rosecmp(&rose->source_addr, addr) &&
257 !ax25cmp(&rose->source_call, call) &&
258 !rose->source_ndigis && s->sk_state == TCP_LISTEN)
259 goto found;
260 }
261
262 sk_for_each(s, node, &rose_list) {
263 struct rose_sock *rose = rose_sk(s);
264
265 if (!rosecmp(&rose->source_addr, addr) &&
266 !ax25cmp(&rose->source_call, &null_ax25_address) &&
267 s->sk_state == TCP_LISTEN)
268 goto found;
269 }
270 s = NULL;
271 found:
272 spin_unlock_bh(&rose_list_lock);
273 return s;
274 }
275
276 /*
277 * Find a connected ROSE socket given my LCI and device.
278 */
279 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
280 {
281 struct sock *s;
282 struct hlist_node *node;
283
284 spin_lock_bh(&rose_list_lock);
285 sk_for_each(s, node, &rose_list) {
286 struct rose_sock *rose = rose_sk(s);
287
288 if (rose->lci == lci && rose->neighbour == neigh)
289 goto found;
290 }
291 s = NULL;
292 found:
293 spin_unlock_bh(&rose_list_lock);
294 return s;
295 }
296
297 /*
298 * Find a unique LCI for a given device.
299 */
300 unsigned int rose_new_lci(struct rose_neigh *neigh)
301 {
302 int lci;
303
304 if (neigh->dce_mode) {
305 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
306 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
307 return lci;
308 } else {
309 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
310 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
311 return lci;
312 }
313
314 return 0;
315 }
316
317 /*
318 * Deferred destroy.
319 */
320 void rose_destroy_socket(struct sock *);
321
322 /*
323 * Handler for deferred kills.
324 */
325 static void rose_destroy_timer(unsigned long data)
326 {
327 rose_destroy_socket((struct sock *)data);
328 }
329
330 /*
331 * This is called from user mode and the timers. Thus it protects itself
332 * against interrupt users but doesn't worry about being called during
333 * work. Once it is removed from the queue no interrupt or bottom half
334 * will touch it and we are (fairly 8-) ) safe.
335 */
336 void rose_destroy_socket(struct sock *sk)
337 {
338 struct sk_buff *skb;
339
340 rose_remove_socket(sk);
341 rose_stop_heartbeat(sk);
342 rose_stop_idletimer(sk);
343 rose_stop_timer(sk);
344
345 rose_clear_queues(sk); /* Flush the queues */
346
347 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
348 if (skb->sk != sk) { /* A pending connection */
349 /* Queue the unaccepted socket for death */
350 sock_set_flag(skb->sk, SOCK_DEAD);
351 rose_start_heartbeat(skb->sk);
352 rose_sk(skb->sk)->state = ROSE_STATE_0;
353 }
354
355 kfree_skb(skb);
356 }
357
358 if (sk_has_allocations(sk)) {
359 /* Defer: outstanding buffers */
360 setup_timer(&sk->sk_timer, rose_destroy_timer,
361 (unsigned long)sk);
362 sk->sk_timer.expires = jiffies + 10 * HZ;
363 add_timer(&sk->sk_timer);
364 } else
365 sock_put(sk);
366 }
367
368 /*
369 * Handling for system calls applied via the various interfaces to a
370 * ROSE socket object.
371 */
372
373 static int rose_setsockopt(struct socket *sock, int level, int optname,
374 char __user *optval, unsigned int optlen)
375 {
376 struct sock *sk = sock->sk;
377 struct rose_sock *rose = rose_sk(sk);
378 int opt;
379
380 if (level != SOL_ROSE)
381 return -ENOPROTOOPT;
382
383 if (optlen < sizeof(int))
384 return -EINVAL;
385
386 if (get_user(opt, (int __user *)optval))
387 return -EFAULT;
388
389 switch (optname) {
390 case ROSE_DEFER:
391 rose->defer = opt ? 1 : 0;
392 return 0;
393
394 case ROSE_T1:
395 if (opt < 1)
396 return -EINVAL;
397 rose->t1 = opt * HZ;
398 return 0;
399
400 case ROSE_T2:
401 if (opt < 1)
402 return -EINVAL;
403 rose->t2 = opt * HZ;
404 return 0;
405
406 case ROSE_T3:
407 if (opt < 1)
408 return -EINVAL;
409 rose->t3 = opt * HZ;
410 return 0;
411
412 case ROSE_HOLDBACK:
413 if (opt < 1)
414 return -EINVAL;
415 rose->hb = opt * HZ;
416 return 0;
417
418 case ROSE_IDLE:
419 if (opt < 0)
420 return -EINVAL;
421 rose->idle = opt * 60 * HZ;
422 return 0;
423
424 case ROSE_QBITINCL:
425 rose->qbitincl = opt ? 1 : 0;
426 return 0;
427
428 default:
429 return -ENOPROTOOPT;
430 }
431 }
432
433 static int rose_getsockopt(struct socket *sock, int level, int optname,
434 char __user *optval, int __user *optlen)
435 {
436 struct sock *sk = sock->sk;
437 struct rose_sock *rose = rose_sk(sk);
438 int val = 0;
439 int len;
440
441 if (level != SOL_ROSE)
442 return -ENOPROTOOPT;
443
444 if (get_user(len, optlen))
445 return -EFAULT;
446
447 if (len < 0)
448 return -EINVAL;
449
450 switch (optname) {
451 case ROSE_DEFER:
452 val = rose->defer;
453 break;
454
455 case ROSE_T1:
456 val = rose->t1 / HZ;
457 break;
458
459 case ROSE_T2:
460 val = rose->t2 / HZ;
461 break;
462
463 case ROSE_T3:
464 val = rose->t3 / HZ;
465 break;
466
467 case ROSE_HOLDBACK:
468 val = rose->hb / HZ;
469 break;
470
471 case ROSE_IDLE:
472 val = rose->idle / (60 * HZ);
473 break;
474
475 case ROSE_QBITINCL:
476 val = rose->qbitincl;
477 break;
478
479 default:
480 return -ENOPROTOOPT;
481 }
482
483 len = min_t(unsigned int, len, sizeof(int));
484
485 if (put_user(len, optlen))
486 return -EFAULT;
487
488 return copy_to_user(optval, &val, len) ? -EFAULT : 0;
489 }
490
491 static int rose_listen(struct socket *sock, int backlog)
492 {
493 struct sock *sk = sock->sk;
494
495 if (sk->sk_state != TCP_LISTEN) {
496 struct rose_sock *rose = rose_sk(sk);
497
498 rose->dest_ndigis = 0;
499 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
500 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
501 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
502 sk->sk_max_ack_backlog = backlog;
503 sk->sk_state = TCP_LISTEN;
504 return 0;
505 }
506
507 return -EOPNOTSUPP;
508 }
509
510 static struct proto rose_proto = {
511 .name = "ROSE",
512 .owner = THIS_MODULE,
513 .obj_size = sizeof(struct rose_sock),
514 };
515
516 static int rose_create(struct net *net, struct socket *sock, int protocol,
517 int kern)
518 {
519 struct sock *sk;
520 struct rose_sock *rose;
521
522 if (!net_eq(net, &init_net))
523 return -EAFNOSUPPORT;
524
525 if (sock->type != SOCK_SEQPACKET || protocol != 0)
526 return -ESOCKTNOSUPPORT;
527
528 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
529 if (sk == NULL)
530 return -ENOMEM;
531
532 rose = rose_sk(sk);
533
534 sock_init_data(sock, sk);
535
536 skb_queue_head_init(&rose->ack_queue);
537 #ifdef M_BIT
538 skb_queue_head_init(&rose->frag_queue);
539 rose->fraglen = 0;
540 #endif
541
542 sock->ops = &rose_proto_ops;
543 sk->sk_protocol = protocol;
544
545 init_timer(&rose->timer);
546 init_timer(&rose->idletimer);
547
548 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
549 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
550 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
551 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
552 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
553
554 rose->state = ROSE_STATE_0;
555
556 return 0;
557 }
558
559 static struct sock *rose_make_new(struct sock *osk)
560 {
561 struct sock *sk;
562 struct rose_sock *rose, *orose;
563
564 if (osk->sk_type != SOCK_SEQPACKET)
565 return NULL;
566
567 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto);
568 if (sk == NULL)
569 return NULL;
570
571 rose = rose_sk(sk);
572
573 sock_init_data(NULL, sk);
574
575 skb_queue_head_init(&rose->ack_queue);
576 #ifdef M_BIT
577 skb_queue_head_init(&rose->frag_queue);
578 rose->fraglen = 0;
579 #endif
580
581 sk->sk_type = osk->sk_type;
582 sk->sk_priority = osk->sk_priority;
583 sk->sk_protocol = osk->sk_protocol;
584 sk->sk_rcvbuf = osk->sk_rcvbuf;
585 sk->sk_sndbuf = osk->sk_sndbuf;
586 sk->sk_state = TCP_ESTABLISHED;
587 sock_copy_flags(sk, osk);
588
589 init_timer(&rose->timer);
590 init_timer(&rose->idletimer);
591
592 orose = rose_sk(osk);
593 rose->t1 = orose->t1;
594 rose->t2 = orose->t2;
595 rose->t3 = orose->t3;
596 rose->hb = orose->hb;
597 rose->idle = orose->idle;
598 rose->defer = orose->defer;
599 rose->device = orose->device;
600 rose->qbitincl = orose->qbitincl;
601
602 return sk;
603 }
604
605 static int rose_release(struct socket *sock)
606 {
607 struct sock *sk = sock->sk;
608 struct rose_sock *rose;
609
610 if (sk == NULL) return 0;
611
612 sock_hold(sk);
613 sock_orphan(sk);
614 lock_sock(sk);
615 rose = rose_sk(sk);
616
617 switch (rose->state) {
618 case ROSE_STATE_0:
619 release_sock(sk);
620 rose_disconnect(sk, 0, -1, -1);
621 lock_sock(sk);
622 rose_destroy_socket(sk);
623 break;
624
625 case ROSE_STATE_2:
626 rose->neighbour->use--;
627 release_sock(sk);
628 rose_disconnect(sk, 0, -1, -1);
629 lock_sock(sk);
630 rose_destroy_socket(sk);
631 break;
632
633 case ROSE_STATE_1:
634 case ROSE_STATE_3:
635 case ROSE_STATE_4:
636 case ROSE_STATE_5:
637 rose_clear_queues(sk);
638 rose_stop_idletimer(sk);
639 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
640 rose_start_t3timer(sk);
641 rose->state = ROSE_STATE_2;
642 sk->sk_state = TCP_CLOSE;
643 sk->sk_shutdown |= SEND_SHUTDOWN;
644 sk->sk_state_change(sk);
645 sock_set_flag(sk, SOCK_DEAD);
646 sock_set_flag(sk, SOCK_DESTROY);
647 break;
648
649 default:
650 break;
651 }
652
653 sock->sk = NULL;
654 release_sock(sk);
655 sock_put(sk);
656
657 return 0;
658 }
659
660 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
661 {
662 struct sock *sk = sock->sk;
663 struct rose_sock *rose = rose_sk(sk);
664 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
665 struct net_device *dev;
666 ax25_address *source;
667 ax25_uid_assoc *user;
668 int n;
669
670 if (!sock_flag(sk, SOCK_ZAPPED))
671 return -EINVAL;
672
673 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
674 return -EINVAL;
675
676 if (addr->srose_family != AF_ROSE)
677 return -EINVAL;
678
679 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
680 return -EINVAL;
681
682 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
683 return -EINVAL;
684
685 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL)
686 return -EADDRNOTAVAIL;
687
688 source = &addr->srose_call;
689
690 user = ax25_findbyuid(current_euid());
691 if (user) {
692 rose->source_call = user->call;
693 ax25_uid_put(user);
694 } else {
695 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
696 return -EACCES;
697 rose->source_call = *source;
698 }
699
700 rose->source_addr = addr->srose_addr;
701 rose->device = dev;
702 rose->source_ndigis = addr->srose_ndigis;
703
704 if (addr_len == sizeof(struct full_sockaddr_rose)) {
705 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
706 for (n = 0 ; n < addr->srose_ndigis ; n++)
707 rose->source_digis[n] = full_addr->srose_digis[n];
708 } else {
709 if (rose->source_ndigis == 1) {
710 rose->source_digis[0] = addr->srose_digi;
711 }
712 }
713
714 rose_insert_socket(sk);
715
716 sock_reset_flag(sk, SOCK_ZAPPED);
717
718 return 0;
719 }
720
721 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
722 {
723 struct sock *sk = sock->sk;
724 struct rose_sock *rose = rose_sk(sk);
725 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
726 unsigned char cause, diagnostic;
727 struct net_device *dev;
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 sock_reset_flag(sk, SOCK_ZAPPED);
785
786 if ((dev = rose_dev_first()) == NULL) {
787 err = -ENETUNREACH;
788 goto out_release;
789 }
790
791 user = ax25_findbyuid(current_euid());
792 if (!user) {
793 err = -EINVAL;
794 goto out_release;
795 }
796
797 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
798 rose->source_call = user->call;
799 rose->device = dev;
800 ax25_uid_put(user);
801
802 rose_insert_socket(sk); /* Finish the bind */
803 }
804 rose->dest_addr = addr->srose_addr;
805 rose->dest_call = addr->srose_call;
806 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
807 rose->dest_ndigis = addr->srose_ndigis;
808
809 if (addr_len == sizeof(struct full_sockaddr_rose)) {
810 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
811 for (n = 0 ; n < addr->srose_ndigis ; n++)
812 rose->dest_digis[n] = full_addr->srose_digis[n];
813 } else {
814 if (rose->dest_ndigis == 1) {
815 rose->dest_digis[0] = addr->srose_digi;
816 }
817 }
818
819 /* Move to connecting socket, start sending Connect Requests */
820 sock->state = SS_CONNECTING;
821 sk->sk_state = TCP_SYN_SENT;
822
823 rose->state = ROSE_STATE_1;
824
825 rose->neighbour->use++;
826
827 rose_write_internal(sk, ROSE_CALL_REQUEST);
828 rose_start_heartbeat(sk);
829 rose_start_t1timer(sk);
830
831 /* Now the loop */
832 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
833 err = -EINPROGRESS;
834 goto out_release;
835 }
836
837 /*
838 * A Connect Ack with Choke or timeout or failed routing will go to
839 * closed.
840 */
841 if (sk->sk_state == TCP_SYN_SENT) {
842 DEFINE_WAIT(wait);
843
844 for (;;) {
845 prepare_to_wait(sk_sleep(sk), &wait,
846 TASK_INTERRUPTIBLE);
847 if (sk->sk_state != TCP_SYN_SENT)
848 break;
849 if (!signal_pending(current)) {
850 release_sock(sk);
851 schedule();
852 lock_sock(sk);
853 continue;
854 }
855 err = -ERESTARTSYS;
856 break;
857 }
858 finish_wait(sk_sleep(sk), &wait);
859
860 if (err)
861 goto out_release;
862 }
863
864 if (sk->sk_state != TCP_ESTABLISHED) {
865 sock->state = SS_UNCONNECTED;
866 err = sock_error(sk); /* Always set at this point */
867 goto out_release;
868 }
869
870 sock->state = SS_CONNECTED;
871
872 out_release:
873 release_sock(sk);
874
875 return err;
876 }
877
878 static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
879 {
880 struct sk_buff *skb;
881 struct sock *newsk;
882 DEFINE_WAIT(wait);
883 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;
892 goto out_release;
893 }
894
895 if (sk->sk_state != TCP_LISTEN) {
896 err = -EINVAL;
897 goto out_release;
898 }
899
900 /*
901 * The write queue this time is holding sockets ready to use
902 * hooked into the SABM we saved
903 */
904 for (;;) {
905 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
906
907 skb = skb_dequeue(&sk->sk_receive_queue);
908 if (skb)
909 break;
910
911 if (flags & O_NONBLOCK) {
912 err = -EWOULDBLOCK;
913 break;
914 }
915 if (!signal_pending(current)) {
916 release_sock(sk);
917 schedule();
918 lock_sock(sk);
919 continue;
920 }
921 err = -ERESTARTSYS;
922 break;
923 }
924 finish_wait(sk_sleep(sk), &wait);
925 if (err)
926 goto out_release;
927
928 newsk = skb->sk;
929 sock_graft(newsk, newsock);
930
931 /* Now attach up the new socket */
932 skb->sk = NULL;
933 kfree_skb(skb);
934 sk->sk_ack_backlog--;
935
936 out_release:
937 release_sock(sk);
938
939 return err;
940 }
941
942 static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
943 int *uaddr_len, int peer)
944 {
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
950 memset(srose, 0, sizeof(*srose));
951 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
969 *uaddr_len = sizeof(struct full_sockaddr_rose);
970 return 0;
971 }
972
973 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
974 {
975 struct sock *sk;
976 struct sock *make;
977 struct rose_sock *make_rose;
978 struct rose_facilities_struct facilities;
979 int n;
980
981 skb->sk = NULL; /* Initially we don't know who it's for */
982
983 /*
984 * skb->data points to the rose frame start
985 */
986 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
987
988 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF,
989 skb->len - ROSE_CALL_REQ_FACILITIES_OFF,
990 &facilities)) {
991 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
992 return 0;
993 }
994
995 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
996
997 /*
998 * We can't accept the Call Request.
999 */
1000 if (sk == NULL || sk_acceptq_is_full(sk) ||
1001 (make = rose_make_new(sk)) == NULL) {
1002 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
1003 return 0;
1004 }
1005
1006 skb->sk = make;
1007 make->sk_state = TCP_ESTABLISHED;
1008 make_rose = rose_sk(make);
1009
1010 make_rose->lci = lci;
1011 make_rose->dest_addr = facilities.dest_addr;
1012 make_rose->dest_call = facilities.dest_call;
1013 make_rose->dest_ndigis = facilities.dest_ndigis;
1014 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1015 make_rose->dest_digis[n] = facilities.dest_digis[n];
1016 make_rose->source_addr = facilities.source_addr;
1017 make_rose->source_call = facilities.source_call;
1018 make_rose->source_ndigis = facilities.source_ndigis;
1019 for (n = 0 ; n < facilities.source_ndigis ; n++)
1020 make_rose->source_digis[n]= facilities.source_digis[n];
1021 make_rose->neighbour = neigh;
1022 make_rose->device = dev;
1023 make_rose->facilities = facilities;
1024
1025 make_rose->neighbour->use++;
1026
1027 if (rose_sk(sk)->defer) {
1028 make_rose->state = ROSE_STATE_5;
1029 } else {
1030 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1031 make_rose->state = ROSE_STATE_3;
1032 rose_start_idletimer(make);
1033 }
1034
1035 make_rose->condition = 0x00;
1036 make_rose->vs = 0;
1037 make_rose->va = 0;
1038 make_rose->vr = 0;
1039 make_rose->vl = 0;
1040 sk->sk_ack_backlog++;
1041
1042 rose_insert_socket(make);
1043
1044 skb_queue_head(&sk->sk_receive_queue, skb);
1045
1046 rose_start_heartbeat(make);
1047
1048 if (!sock_flag(sk, SOCK_DEAD))
1049 sk->sk_data_ready(sk, skb->len);
1050
1051 return 1;
1052 }
1053
1054 static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
1055 struct msghdr *msg, size_t len)
1056 {
1057 struct sock *sk = sock->sk;
1058 struct rose_sock *rose = rose_sk(sk);
1059 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1060 int err;
1061 struct full_sockaddr_rose srose;
1062 struct sk_buff *skb;
1063 unsigned char *asmptr;
1064 int n, size, qbit = 0;
1065
1066 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1067 return -EINVAL;
1068
1069 if (sock_flag(sk, SOCK_ZAPPED))
1070 return -EADDRNOTAVAIL;
1071
1072 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1073 send_sig(SIGPIPE, current, 0);
1074 return -EPIPE;
1075 }
1076
1077 if (rose->neighbour == NULL || rose->device == NULL)
1078 return -ENETUNREACH;
1079
1080 if (usrose != NULL) {
1081 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1082 return -EINVAL;
1083 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1084 memcpy(&srose, usrose, msg->msg_namelen);
1085 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1086 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1087 return -EISCONN;
1088 if (srose.srose_ndigis != rose->dest_ndigis)
1089 return -EISCONN;
1090 if (srose.srose_ndigis == rose->dest_ndigis) {
1091 for (n = 0 ; n < srose.srose_ndigis ; n++)
1092 if (ax25cmp(&rose->dest_digis[n],
1093 &srose.srose_digis[n]))
1094 return -EISCONN;
1095 }
1096 if (srose.srose_family != AF_ROSE)
1097 return -EINVAL;
1098 } else {
1099 if (sk->sk_state != TCP_ESTABLISHED)
1100 return -ENOTCONN;
1101
1102 srose.srose_family = AF_ROSE;
1103 srose.srose_addr = rose->dest_addr;
1104 srose.srose_call = rose->dest_call;
1105 srose.srose_ndigis = rose->dest_ndigis;
1106 for (n = 0 ; n < rose->dest_ndigis ; n++)
1107 srose.srose_digis[n] = rose->dest_digis[n];
1108 }
1109
1110 /* Build a packet */
1111 /* Sanity check the packet size */
1112 if (len > 65535)
1113 return -EMSGSIZE;
1114
1115 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1116
1117 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1118 return err;
1119
1120 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1121
1122 /*
1123 * Put the data on the end
1124 */
1125
1126 skb_reset_transport_header(skb);
1127 skb_put(skb, len);
1128
1129 err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1130 if (err) {
1131 kfree_skb(skb);
1132 return err;
1133 }
1134
1135 /*
1136 * If the Q BIT Include socket option is in force, the first
1137 * byte of the user data is the logical value of the Q Bit.
1138 */
1139 if (rose->qbitincl) {
1140 qbit = skb->data[0];
1141 skb_pull(skb, 1);
1142 }
1143
1144 /*
1145 * Push down the ROSE header
1146 */
1147 asmptr = skb_push(skb, ROSE_MIN_LEN);
1148
1149 /* Build a ROSE Network header */
1150 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1151 asmptr[1] = (rose->lci >> 0) & 0xFF;
1152 asmptr[2] = ROSE_DATA;
1153
1154 if (qbit)
1155 asmptr[0] |= ROSE_Q_BIT;
1156
1157 if (sk->sk_state != TCP_ESTABLISHED) {
1158 kfree_skb(skb);
1159 return -ENOTCONN;
1160 }
1161
1162 #ifdef M_BIT
1163 #define ROSE_PACLEN (256-ROSE_MIN_LEN)
1164 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1165 unsigned char header[ROSE_MIN_LEN];
1166 struct sk_buff *skbn;
1167 int frontlen;
1168 int lg;
1169
1170 /* Save a copy of the Header */
1171 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
1172 skb_pull(skb, ROSE_MIN_LEN);
1173
1174 frontlen = skb_headroom(skb);
1175
1176 while (skb->len > 0) {
1177 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1178 kfree_skb(skb);
1179 return err;
1180 }
1181
1182 skbn->sk = sk;
1183 skbn->free = 1;
1184 skbn->arp = 1;
1185
1186 skb_reserve(skbn, frontlen);
1187
1188 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1189
1190 /* Copy the user data */
1191 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
1192 skb_pull(skb, lg);
1193
1194 /* Duplicate the Header */
1195 skb_push(skbn, ROSE_MIN_LEN);
1196 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
1197
1198 if (skb->len > 0)
1199 skbn->data[2] |= M_BIT;
1200
1201 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1202 }
1203
1204 skb->free = 1;
1205 kfree_skb(skb);
1206 } else {
1207 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1208 }
1209 #else
1210 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1211 #endif
1212
1213 rose_kick(sk);
1214
1215 return len;
1216 }
1217
1218
1219 static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1220 struct msghdr *msg, size_t size, int flags)
1221 {
1222 struct sock *sk = sock->sk;
1223 struct rose_sock *rose = rose_sk(sk);
1224 struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
1225 size_t copied;
1226 unsigned char *asmptr;
1227 struct sk_buff *skb;
1228 int n, er, qbit;
1229
1230 /*
1231 * This works for seqpacket too. The receiver has ordered the queue for
1232 * us! We do one quick check first though
1233 */
1234 if (sk->sk_state != TCP_ESTABLISHED)
1235 return -ENOTCONN;
1236
1237 /* Now we can treat all alike */
1238 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1239 return er;
1240
1241 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1242
1243 skb_pull(skb, ROSE_MIN_LEN);
1244
1245 if (rose->qbitincl) {
1246 asmptr = skb_push(skb, 1);
1247 *asmptr = qbit;
1248 }
1249
1250 skb_reset_transport_header(skb);
1251 copied = skb->len;
1252
1253 if (copied > size) {
1254 copied = size;
1255 msg->msg_flags |= MSG_TRUNC;
1256 }
1257
1258 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1259
1260 if (srose != NULL) {
1261 srose->srose_family = AF_ROSE;
1262 srose->srose_addr = rose->dest_addr;
1263 srose->srose_call = rose->dest_call;
1264 srose->srose_ndigis = rose->dest_ndigis;
1265 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
1266 struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
1267 for (n = 0 ; n < rose->dest_ndigis ; n++)
1268 full_srose->srose_digis[n] = rose->dest_digis[n];
1269 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1270 } else {
1271 if (rose->dest_ndigis >= 1) {
1272 srose->srose_ndigis = 1;
1273 srose->srose_digi = rose->dest_digis[0];
1274 }
1275 msg->msg_namelen = sizeof(struct sockaddr_rose);
1276 }
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 SIOCGSTAMP:
1311 return sock_get_timestamp(sk, (struct timeval __user *) argp);
1312
1313 case SIOCGSTAMPNS:
1314 return sock_get_timestampns(sk, (struct timespec __user *) argp);
1315
1316 case SIOCGIFADDR:
1317 case SIOCSIFADDR:
1318 case SIOCGIFDSTADDR:
1319 case SIOCSIFDSTADDR:
1320 case SIOCGIFBRDADDR:
1321 case SIOCSIFBRDADDR:
1322 case SIOCGIFNETMASK:
1323 case SIOCSIFNETMASK:
1324 case SIOCGIFMETRIC:
1325 case SIOCSIFMETRIC:
1326 return -EINVAL;
1327
1328 case SIOCADDRT:
1329 case SIOCDELRT:
1330 case SIOCRSCLRRT:
1331 if (!capable(CAP_NET_ADMIN))
1332 return -EPERM;
1333 return rose_rt_ioctl(cmd, argp);
1334
1335 case SIOCRSGCAUSE: {
1336 struct rose_cause_struct rose_cause;
1337 rose_cause.cause = rose->cause;
1338 rose_cause.diagnostic = rose->diagnostic;
1339 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1340 }
1341
1342 case SIOCRSSCAUSE: {
1343 struct rose_cause_struct rose_cause;
1344 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1345 return -EFAULT;
1346 rose->cause = rose_cause.cause;
1347 rose->diagnostic = rose_cause.diagnostic;
1348 return 0;
1349 }
1350
1351 case SIOCRSSL2CALL:
1352 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1353 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1354 ax25_listen_release(&rose_callsign, NULL);
1355 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1356 return -EFAULT;
1357 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1358 return ax25_listen_register(&rose_callsign, NULL);
1359
1360 return 0;
1361
1362 case SIOCRSGL2CALL:
1363 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1364
1365 case SIOCRSACCEPT:
1366 if (rose->state == ROSE_STATE_5) {
1367 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1368 rose_start_idletimer(sk);
1369 rose->condition = 0x00;
1370 rose->vs = 0;
1371 rose->va = 0;
1372 rose->vr = 0;
1373 rose->vl = 0;
1374 rose->state = ROSE_STATE_3;
1375 }
1376 return 0;
1377
1378 default:
1379 return -ENOIOCTLCMD;
1380 }
1381
1382 return 0;
1383 }
1384
1385 #ifdef CONFIG_PROC_FS
1386 static void *rose_info_start(struct seq_file *seq, loff_t *pos)
1387 __acquires(rose_list_lock)
1388 {
1389 spin_lock_bh(&rose_list_lock);
1390 return seq_hlist_start_head(&rose_list, *pos);
1391 }
1392
1393 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1394 {
1395 return seq_hlist_next(v, &rose_list, pos);
1396 }
1397
1398 static void rose_info_stop(struct seq_file *seq, void *v)
1399 __releases(rose_list_lock)
1400 {
1401 spin_unlock_bh(&rose_list_lock);
1402 }
1403
1404 static int rose_info_show(struct seq_file *seq, void *v)
1405 {
1406 char buf[11], rsbuf[11];
1407
1408 if (v == SEQ_START_TOKEN)
1409 seq_puts(seq,
1410 "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");
1411
1412 else {
1413 struct sock *s = sk_entry(v);
1414 struct rose_sock *rose = rose_sk(s);
1415 const char *devname, *callsign;
1416 const struct net_device *dev = rose->device;
1417
1418 if (!dev)
1419 devname = "???";
1420 else
1421 devname = dev->name;
1422
1423 seq_printf(seq, "%-10s %-9s ",
1424 rose2asc(rsbuf, &rose->dest_addr),
1425 ax2asc(buf, &rose->dest_call));
1426
1427 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1428 callsign = "??????-?";
1429 else
1430 callsign = ax2asc(buf, &rose->source_call);
1431
1432 seq_printf(seq,
1433 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
1434 rose2asc(rsbuf, &rose->source_addr),
1435 callsign,
1436 devname,
1437 rose->lci & 0x0FFF,
1438 (rose->neighbour) ? rose->neighbour->number : 0,
1439 rose->state,
1440 rose->vs,
1441 rose->vr,
1442 rose->va,
1443 ax25_display_timer(&rose->timer) / HZ,
1444 rose->t1 / HZ,
1445 rose->t2 / HZ,
1446 rose->t3 / HZ,
1447 rose->hb / HZ,
1448 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1449 rose->idle / (60 * HZ),
1450 sk_wmem_alloc_get(s),
1451 sk_rmem_alloc_get(s),
1452 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1453 }
1454
1455 return 0;
1456 }
1457
1458 static const struct seq_operations rose_info_seqops = {
1459 .start = rose_info_start,
1460 .next = rose_info_next,
1461 .stop = rose_info_stop,
1462 .show = rose_info_show,
1463 };
1464
1465 static int rose_info_open(struct inode *inode, struct file *file)
1466 {
1467 return seq_open(file, &rose_info_seqops);
1468 }
1469
1470 static const struct file_operations rose_info_fops = {
1471 .owner = THIS_MODULE,
1472 .open = rose_info_open,
1473 .read = seq_read,
1474 .llseek = seq_lseek,
1475 .release = seq_release,
1476 };
1477 #endif /* CONFIG_PROC_FS */
1478
1479 static const struct net_proto_family rose_family_ops = {
1480 .family = PF_ROSE,
1481 .create = rose_create,
1482 .owner = THIS_MODULE,
1483 };
1484
1485 static const struct proto_ops rose_proto_ops = {
1486 .family = PF_ROSE,
1487 .owner = THIS_MODULE,
1488 .release = rose_release,
1489 .bind = rose_bind,
1490 .connect = rose_connect,
1491 .socketpair = sock_no_socketpair,
1492 .accept = rose_accept,
1493 .getname = rose_getname,
1494 .poll = datagram_poll,
1495 .ioctl = rose_ioctl,
1496 .listen = rose_listen,
1497 .shutdown = sock_no_shutdown,
1498 .setsockopt = rose_setsockopt,
1499 .getsockopt = rose_getsockopt,
1500 .sendmsg = rose_sendmsg,
1501 .recvmsg = rose_recvmsg,
1502 .mmap = sock_no_mmap,
1503 .sendpage = sock_no_sendpage,
1504 };
1505
1506 static struct notifier_block rose_dev_notifier = {
1507 .notifier_call = rose_device_event,
1508 };
1509
1510 static struct net_device **dev_rose;
1511
1512 static struct ax25_protocol rose_pid = {
1513 .pid = AX25_P_ROSE,
1514 .func = rose_route_frame
1515 };
1516
1517 static struct ax25_linkfail rose_linkfail_notifier = {
1518 .func = rose_link_failed
1519 };
1520
1521 static int __init rose_proto_init(void)
1522 {
1523 int i;
1524 int rc;
1525
1526 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1527 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1528 rc = -EINVAL;
1529 goto out;
1530 }
1531
1532 rc = proto_register(&rose_proto, 0);
1533 if (rc != 0)
1534 goto out;
1535
1536 rose_callsign = null_ax25_address;
1537
1538 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
1539 if (dev_rose == NULL) {
1540 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
1541 rc = -ENOMEM;
1542 goto out_proto_unregister;
1543 }
1544
1545 for (i = 0; i < rose_ndevs; i++) {
1546 struct net_device *dev;
1547 char name[IFNAMSIZ];
1548
1549 sprintf(name, "rose%d", i);
1550 dev = alloc_netdev(0, name, rose_setup);
1551 if (!dev) {
1552 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
1553 rc = -ENOMEM;
1554 goto fail;
1555 }
1556 rc = register_netdev(dev);
1557 if (rc) {
1558 printk(KERN_ERR "ROSE: netdevice registration failed\n");
1559 free_netdev(dev);
1560 goto fail;
1561 }
1562 rose_set_lockdep_key(dev);
1563 dev_rose[i] = dev;
1564 }
1565
1566 sock_register(&rose_family_ops);
1567 register_netdevice_notifier(&rose_dev_notifier);
1568
1569 ax25_register_pid(&rose_pid);
1570 ax25_linkfail_register(&rose_linkfail_notifier);
1571
1572 #ifdef CONFIG_SYSCTL
1573 rose_register_sysctl();
1574 #endif
1575 rose_loopback_init();
1576
1577 rose_add_loopback_neigh();
1578
1579 proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops);
1580 proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops);
1581 proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops);
1582 proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops);
1583 out:
1584 return rc;
1585 fail:
1586 while (--i >= 0) {
1587 unregister_netdev(dev_rose[i]);
1588 free_netdev(dev_rose[i]);
1589 }
1590 kfree(dev_rose);
1591 out_proto_unregister:
1592 proto_unregister(&rose_proto);
1593 goto out;
1594 }
1595 module_init(rose_proto_init);
1596
1597 module_param(rose_ndevs, int, 0);
1598 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1599
1600 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1601 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1602 MODULE_LICENSE("GPL");
1603 MODULE_ALIAS_NETPROTO(PF_ROSE);
1604
1605 static void __exit rose_exit(void)
1606 {
1607 int i;
1608
1609 proc_net_remove(&init_net, "rose");
1610 proc_net_remove(&init_net, "rose_neigh");
1611 proc_net_remove(&init_net, "rose_nodes");
1612 proc_net_remove(&init_net, "rose_routes");
1613 rose_loopback_clear();
1614
1615 rose_rt_free();
1616
1617 ax25_protocol_release(AX25_P_ROSE);
1618 ax25_linkfail_release(&rose_linkfail_notifier);
1619
1620 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1621 ax25_listen_release(&rose_callsign, NULL);
1622
1623 #ifdef CONFIG_SYSCTL
1624 rose_unregister_sysctl();
1625 #endif
1626 unregister_netdevice_notifier(&rose_dev_notifier);
1627
1628 sock_unregister(PF_ROSE);
1629
1630 for (i = 0; i < rose_ndevs; i++) {
1631 struct net_device *dev = dev_rose[i];
1632
1633 if (dev) {
1634 unregister_netdev(dev);
1635 free_netdev(dev);
1636 }
1637 }
1638
1639 kfree(dev_rose);
1640 proto_unregister(&rose_proto);
1641 }
1642
1643 module_exit(rose_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree