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Merge branch '83xx' into for_paulus
[deliverable/linux.git] / net / rose / af_rose.c
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/kernel.h>
22 #include <linux/sched.h>
23 #include <linux/spinlock.h>
24 #include <linux/timer.h>
25 #include <linux/string.h>
26 #include <linux/sockios.h>
27 #include <linux/net.h>
28 #include <linux/stat.h>
29 #include <net/ax25.h>
30 #include <linux/inet.h>
31 #include <linux/netdevice.h>
32 #include <linux/if_arp.h>
33 #include <linux/skbuff.h>
34 #include <net/sock.h>
35 #include <asm/system.h>
36 #include <asm/uaccess.h>
37 #include <linux/fcntl.h>
38 #include <linux/termios.h>
39 #include <linux/mm.h>
40 #include <linux/interrupt.h>
41 #include <linux/notifier.h>
42 #include <net/rose.h>
43 #include <linux/proc_fs.h>
44 #include <linux/seq_file.h>
45 #include <net/tcp_states.h>
46 #include <net/ip.h>
47 #include <net/arp.h>
48
49 static int rose_ndevs = 10;
50
51 int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
52 int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1;
53 int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2;
54 int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3;
55 int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE;
56 int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB;
57 int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING;
58 int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT;
59 int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC;
60 int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE;
61
62 static HLIST_HEAD(rose_list);
63 static DEFINE_SPINLOCK(rose_list_lock);
64
65 static struct proto_ops rose_proto_ops;
66
67 ax25_address rose_callsign;
68
69 /*
70 * Convert a ROSE address into text.
71 */
72 const char *rose2asc(const rose_address *addr)
73 {
74 static char buffer[11];
75
76 if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
77 addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
78 addr->rose_addr[4] == 0x00) {
79 strcpy(buffer, "*");
80 } else {
81 sprintf(buffer, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
82 addr->rose_addr[1] & 0xFF,
83 addr->rose_addr[2] & 0xFF,
84 addr->rose_addr[3] & 0xFF,
85 addr->rose_addr[4] & 0xFF);
86 }
87
88 return buffer;
89 }
90
91 /*
92 * Compare two ROSE addresses, 0 == equal.
93 */
94 int rosecmp(rose_address *addr1, rose_address *addr2)
95 {
96 int i;
97
98 for (i = 0; i < 5; i++)
99 if (addr1->rose_addr[i] != addr2->rose_addr[i])
100 return 1;
101
102 return 0;
103 }
104
105 /*
106 * Compare two ROSE addresses for only mask digits, 0 == equal.
107 */
108 int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
109 {
110 int i, j;
111
112 if (mask > 10)
113 return 1;
114
115 for (i = 0; i < mask; i++) {
116 j = i / 2;
117
118 if ((i % 2) != 0) {
119 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F))
120 return 1;
121 } else {
122 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0))
123 return 1;
124 }
125 }
126
127 return 0;
128 }
129
130 /*
131 * Socket removal during an interrupt is now safe.
132 */
133 static void rose_remove_socket(struct sock *sk)
134 {
135 spin_lock_bh(&rose_list_lock);
136 sk_del_node_init(sk);
137 spin_unlock_bh(&rose_list_lock);
138 }
139
140 /*
141 * Kill all bound sockets on a broken link layer connection to a
142 * particular neighbour.
143 */
144 void rose_kill_by_neigh(struct rose_neigh *neigh)
145 {
146 struct sock *s;
147 struct hlist_node *node;
148
149 spin_lock_bh(&rose_list_lock);
150 sk_for_each(s, node, &rose_list) {
151 struct rose_sock *rose = rose_sk(s);
152
153 if (rose->neighbour == neigh) {
154 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
155 rose->neighbour->use--;
156 rose->neighbour = NULL;
157 }
158 }
159 spin_unlock_bh(&rose_list_lock);
160 }
161
162 /*
163 * Kill all bound sockets on a dropped device.
164 */
165 static void rose_kill_by_device(struct net_device *dev)
166 {
167 struct sock *s;
168 struct hlist_node *node;
169
170 spin_lock_bh(&rose_list_lock);
171 sk_for_each(s, node, &rose_list) {
172 struct rose_sock *rose = rose_sk(s);
173
174 if (rose->device == dev) {
175 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
176 rose->neighbour->use--;
177 rose->device = NULL;
178 }
179 }
180 spin_unlock_bh(&rose_list_lock);
181 }
182
183 /*
184 * Handle device status changes.
185 */
186 static int rose_device_event(struct notifier_block *this, unsigned long event,
187 void *ptr)
188 {
189 struct net_device *dev = (struct net_device *)ptr;
190
191 if (event != NETDEV_DOWN)
192 return NOTIFY_DONE;
193
194 switch (dev->type) {
195 case ARPHRD_ROSE:
196 rose_kill_by_device(dev);
197 break;
198 case ARPHRD_AX25:
199 rose_link_device_down(dev);
200 rose_rt_device_down(dev);
201 break;
202 }
203
204 return NOTIFY_DONE;
205 }
206
207 /*
208 * Add a socket to the bound sockets list.
209 */
210 static void rose_insert_socket(struct sock *sk)
211 {
212
213 spin_lock_bh(&rose_list_lock);
214 sk_add_node(sk, &rose_list);
215 spin_unlock_bh(&rose_list_lock);
216 }
217
218 /*
219 * Find a socket that wants to accept the Call Request we just
220 * received.
221 */
222 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
223 {
224 struct sock *s;
225 struct hlist_node *node;
226
227 spin_lock_bh(&rose_list_lock);
228 sk_for_each(s, node, &rose_list) {
229 struct rose_sock *rose = rose_sk(s);
230
231 if (!rosecmp(&rose->source_addr, addr) &&
232 !ax25cmp(&rose->source_call, call) &&
233 !rose->source_ndigis && s->sk_state == TCP_LISTEN)
234 goto found;
235 }
236
237 sk_for_each(s, node, &rose_list) {
238 struct rose_sock *rose = rose_sk(s);
239
240 if (!rosecmp(&rose->source_addr, addr) &&
241 !ax25cmp(&rose->source_call, &null_ax25_address) &&
242 s->sk_state == TCP_LISTEN)
243 goto found;
244 }
245 s = NULL;
246 found:
247 spin_unlock_bh(&rose_list_lock);
248 return s;
249 }
250
251 /*
252 * Find a connected ROSE socket given my LCI and device.
253 */
254 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
255 {
256 struct sock *s;
257 struct hlist_node *node;
258
259 spin_lock_bh(&rose_list_lock);
260 sk_for_each(s, node, &rose_list) {
261 struct rose_sock *rose = rose_sk(s);
262
263 if (rose->lci == lci && rose->neighbour == neigh)
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 unique LCI for a given device.
274 */
275 unsigned int rose_new_lci(struct rose_neigh *neigh)
276 {
277 int lci;
278
279 if (neigh->dce_mode) {
280 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
281 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
282 return lci;
283 } else {
284 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
285 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
286 return lci;
287 }
288
289 return 0;
290 }
291
292 /*
293 * Deferred destroy.
294 */
295 void rose_destroy_socket(struct sock *);
296
297 /*
298 * Handler for deferred kills.
299 */
300 static void rose_destroy_timer(unsigned long data)
301 {
302 rose_destroy_socket((struct sock *)data);
303 }
304
305 /*
306 * This is called from user mode and the timers. Thus it protects itself
307 * against interrupt users but doesn't worry about being called during
308 * work. Once it is removed from the queue no interrupt or bottom half
309 * will touch it and we are (fairly 8-) ) safe.
310 */
311 void rose_destroy_socket(struct sock *sk)
312 {
313 struct sk_buff *skb;
314
315 rose_remove_socket(sk);
316 rose_stop_heartbeat(sk);
317 rose_stop_idletimer(sk);
318 rose_stop_timer(sk);
319
320 rose_clear_queues(sk); /* Flush the queues */
321
322 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
323 if (skb->sk != sk) { /* A pending connection */
324 /* Queue the unaccepted socket for death */
325 sock_set_flag(skb->sk, SOCK_DEAD);
326 rose_start_heartbeat(skb->sk);
327 rose_sk(skb->sk)->state = ROSE_STATE_0;
328 }
329
330 kfree_skb(skb);
331 }
332
333 if (atomic_read(&sk->sk_wmem_alloc) ||
334 atomic_read(&sk->sk_rmem_alloc)) {
335 /* Defer: outstanding buffers */
336 init_timer(&sk->sk_timer);
337 sk->sk_timer.expires = jiffies + 10 * HZ;
338 sk->sk_timer.function = rose_destroy_timer;
339 sk->sk_timer.data = (unsigned long)sk;
340 add_timer(&sk->sk_timer);
341 } else
342 sock_put(sk);
343 }
344
345 /*
346 * Handling for system calls applied via the various interfaces to a
347 * ROSE socket object.
348 */
349
350 static int rose_setsockopt(struct socket *sock, int level, int optname,
351 char __user *optval, int optlen)
352 {
353 struct sock *sk = sock->sk;
354 struct rose_sock *rose = rose_sk(sk);
355 int opt;
356
357 if (level != SOL_ROSE)
358 return -ENOPROTOOPT;
359
360 if (optlen < sizeof(int))
361 return -EINVAL;
362
363 if (get_user(opt, (int __user *)optval))
364 return -EFAULT;
365
366 switch (optname) {
367 case ROSE_DEFER:
368 rose->defer = opt ? 1 : 0;
369 return 0;
370
371 case ROSE_T1:
372 if (opt < 1)
373 return -EINVAL;
374 rose->t1 = opt * HZ;
375 return 0;
376
377 case ROSE_T2:
378 if (opt < 1)
379 return -EINVAL;
380 rose->t2 = opt * HZ;
381 return 0;
382
383 case ROSE_T3:
384 if (opt < 1)
385 return -EINVAL;
386 rose->t3 = opt * HZ;
387 return 0;
388
389 case ROSE_HOLDBACK:
390 if (opt < 1)
391 return -EINVAL;
392 rose->hb = opt * HZ;
393 return 0;
394
395 case ROSE_IDLE:
396 if (opt < 0)
397 return -EINVAL;
398 rose->idle = opt * 60 * HZ;
399 return 0;
400
401 case ROSE_QBITINCL:
402 rose->qbitincl = opt ? 1 : 0;
403 return 0;
404
405 default:
406 return -ENOPROTOOPT;
407 }
408 }
409
410 static int rose_getsockopt(struct socket *sock, int level, int optname,
411 char __user *optval, int __user *optlen)
412 {
413 struct sock *sk = sock->sk;
414 struct rose_sock *rose = rose_sk(sk);
415 int val = 0;
416 int len;
417
418 if (level != SOL_ROSE)
419 return -ENOPROTOOPT;
420
421 if (get_user(len, optlen))
422 return -EFAULT;
423
424 if (len < 0)
425 return -EINVAL;
426
427 switch (optname) {
428 case ROSE_DEFER:
429 val = rose->defer;
430 break;
431
432 case ROSE_T1:
433 val = rose->t1 / HZ;
434 break;
435
436 case ROSE_T2:
437 val = rose->t2 / HZ;
438 break;
439
440 case ROSE_T3:
441 val = rose->t3 / HZ;
442 break;
443
444 case ROSE_HOLDBACK:
445 val = rose->hb / HZ;
446 break;
447
448 case ROSE_IDLE:
449 val = rose->idle / (60 * HZ);
450 break;
451
452 case ROSE_QBITINCL:
453 val = rose->qbitincl;
454 break;
455
456 default:
457 return -ENOPROTOOPT;
458 }
459
460 len = min_t(unsigned int, len, sizeof(int));
461
462 if (put_user(len, optlen))
463 return -EFAULT;
464
465 return copy_to_user(optval, &val, len) ? -EFAULT : 0;
466 }
467
468 static int rose_listen(struct socket *sock, int backlog)
469 {
470 struct sock *sk = sock->sk;
471
472 if (sk->sk_state != TCP_LISTEN) {
473 struct rose_sock *rose = rose_sk(sk);
474
475 rose->dest_ndigis = 0;
476 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
477 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
478 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
479 sk->sk_max_ack_backlog = backlog;
480 sk->sk_state = TCP_LISTEN;
481 return 0;
482 }
483
484 return -EOPNOTSUPP;
485 }
486
487 static struct proto rose_proto = {
488 .name = "ROSE",
489 .owner = THIS_MODULE,
490 .obj_size = sizeof(struct rose_sock),
491 };
492
493 static int rose_create(struct socket *sock, int protocol)
494 {
495 struct sock *sk;
496 struct rose_sock *rose;
497
498 if (sock->type != SOCK_SEQPACKET || protocol != 0)
499 return -ESOCKTNOSUPPORT;
500
501 if ((sk = sk_alloc(PF_ROSE, GFP_ATOMIC, &rose_proto, 1)) == NULL)
502 return -ENOMEM;
503
504 rose = rose_sk(sk);
505
506 sock_init_data(sock, sk);
507
508 skb_queue_head_init(&rose->ack_queue);
509 #ifdef M_BIT
510 skb_queue_head_init(&rose->frag_queue);
511 rose->fraglen = 0;
512 #endif
513
514 sock->ops = &rose_proto_ops;
515 sk->sk_protocol = protocol;
516
517 init_timer(&rose->timer);
518 init_timer(&rose->idletimer);
519
520 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
521 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
522 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
523 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
524 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
525
526 rose->state = ROSE_STATE_0;
527
528 return 0;
529 }
530
531 static struct sock *rose_make_new(struct sock *osk)
532 {
533 struct sock *sk;
534 struct rose_sock *rose, *orose;
535
536 if (osk->sk_type != SOCK_SEQPACKET)
537 return NULL;
538
539 if ((sk = sk_alloc(PF_ROSE, GFP_ATOMIC, &rose_proto, 1)) == NULL)
540 return NULL;
541
542 rose = rose_sk(sk);
543
544 sock_init_data(NULL, sk);
545
546 skb_queue_head_init(&rose->ack_queue);
547 #ifdef M_BIT
548 skb_queue_head_init(&rose->frag_queue);
549 rose->fraglen = 0;
550 #endif
551
552 sk->sk_type = osk->sk_type;
553 sk->sk_socket = osk->sk_socket;
554 sk->sk_priority = osk->sk_priority;
555 sk->sk_protocol = osk->sk_protocol;
556 sk->sk_rcvbuf = osk->sk_rcvbuf;
557 sk->sk_sndbuf = osk->sk_sndbuf;
558 sk->sk_state = TCP_ESTABLISHED;
559 sk->sk_sleep = osk->sk_sleep;
560 sock_copy_flags(sk, osk);
561
562 init_timer(&rose->timer);
563 init_timer(&rose->idletimer);
564
565 orose = rose_sk(osk);
566 rose->t1 = orose->t1;
567 rose->t2 = orose->t2;
568 rose->t3 = orose->t3;
569 rose->hb = orose->hb;
570 rose->idle = orose->idle;
571 rose->defer = orose->defer;
572 rose->device = orose->device;
573 rose->qbitincl = orose->qbitincl;
574
575 return sk;
576 }
577
578 static int rose_release(struct socket *sock)
579 {
580 struct sock *sk = sock->sk;
581 struct rose_sock *rose;
582
583 if (sk == NULL) return 0;
584
585 rose = rose_sk(sk);
586
587 switch (rose->state) {
588 case ROSE_STATE_0:
589 rose_disconnect(sk, 0, -1, -1);
590 rose_destroy_socket(sk);
591 break;
592
593 case ROSE_STATE_2:
594 rose->neighbour->use--;
595 rose_disconnect(sk, 0, -1, -1);
596 rose_destroy_socket(sk);
597 break;
598
599 case ROSE_STATE_1:
600 case ROSE_STATE_3:
601 case ROSE_STATE_4:
602 case ROSE_STATE_5:
603 rose_clear_queues(sk);
604 rose_stop_idletimer(sk);
605 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
606 rose_start_t3timer(sk);
607 rose->state = ROSE_STATE_2;
608 sk->sk_state = TCP_CLOSE;
609 sk->sk_shutdown |= SEND_SHUTDOWN;
610 sk->sk_state_change(sk);
611 sock_set_flag(sk, SOCK_DEAD);
612 sock_set_flag(sk, SOCK_DESTROY);
613 break;
614
615 default:
616 break;
617 }
618
619 sock->sk = NULL;
620
621 return 0;
622 }
623
624 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
625 {
626 struct sock *sk = sock->sk;
627 struct rose_sock *rose = rose_sk(sk);
628 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
629 struct net_device *dev;
630 ax25_address *source;
631 ax25_uid_assoc *user;
632 int n;
633
634 if (!sock_flag(sk, SOCK_ZAPPED))
635 return -EINVAL;
636
637 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
638 return -EINVAL;
639
640 if (addr->srose_family != AF_ROSE)
641 return -EINVAL;
642
643 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
644 return -EINVAL;
645
646 if (addr->srose_ndigis > ROSE_MAX_DIGIS)
647 return -EINVAL;
648
649 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) {
650 SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n");
651 return -EADDRNOTAVAIL;
652 }
653
654 source = &addr->srose_call;
655
656 user = ax25_findbyuid(current->euid);
657 if (user) {
658 rose->source_call = user->call;
659 ax25_uid_put(user);
660 } else {
661 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
662 return -EACCES;
663 rose->source_call = *source;
664 }
665
666 rose->source_addr = addr->srose_addr;
667 rose->device = dev;
668 rose->source_ndigis = addr->srose_ndigis;
669
670 if (addr_len == sizeof(struct full_sockaddr_rose)) {
671 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
672 for (n = 0 ; n < addr->srose_ndigis ; n++)
673 rose->source_digis[n] = full_addr->srose_digis[n];
674 } else {
675 if (rose->source_ndigis == 1) {
676 rose->source_digis[0] = addr->srose_digi;
677 }
678 }
679
680 rose_insert_socket(sk);
681
682 sock_reset_flag(sk, SOCK_ZAPPED);
683 SOCK_DEBUG(sk, "ROSE: socket is bound\n");
684 return 0;
685 }
686
687 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
688 {
689 struct sock *sk = sock->sk;
690 struct rose_sock *rose = rose_sk(sk);
691 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
692 unsigned char cause, diagnostic;
693 struct net_device *dev;
694 ax25_uid_assoc *user;
695 int n;
696
697 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
698 sock->state = SS_CONNECTED;
699 return 0; /* Connect completed during a ERESTARTSYS event */
700 }
701
702 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
703 sock->state = SS_UNCONNECTED;
704 return -ECONNREFUSED;
705 }
706
707 if (sk->sk_state == TCP_ESTABLISHED)
708 return -EISCONN; /* No reconnect on a seqpacket socket */
709
710 sk->sk_state = TCP_CLOSE;
711 sock->state = SS_UNCONNECTED;
712
713 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
714 return -EINVAL;
715
716 if (addr->srose_family != AF_ROSE)
717 return -EINVAL;
718
719 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
720 return -EINVAL;
721
722 if (addr->srose_ndigis > ROSE_MAX_DIGIS)
723 return -EINVAL;
724
725 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
726 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
727 return -EINVAL;
728
729 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
730 &diagnostic);
731 if (!rose->neighbour)
732 return -ENETUNREACH;
733
734 rose->lci = rose_new_lci(rose->neighbour);
735 if (!rose->lci)
736 return -ENETUNREACH;
737
738 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
739 sock_reset_flag(sk, SOCK_ZAPPED);
740
741 if ((dev = rose_dev_first()) == NULL)
742 return -ENETUNREACH;
743
744 user = ax25_findbyuid(current->euid);
745 if (!user)
746 return -EINVAL;
747
748 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
749 rose->source_call = user->call;
750 rose->device = dev;
751 ax25_uid_put(user);
752
753 rose_insert_socket(sk); /* Finish the bind */
754 }
755
756 rose->dest_addr = addr->srose_addr;
757 rose->dest_call = addr->srose_call;
758 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
759 rose->dest_ndigis = addr->srose_ndigis;
760
761 if (addr_len == sizeof(struct full_sockaddr_rose)) {
762 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
763 for (n = 0 ; n < addr->srose_ndigis ; n++)
764 rose->dest_digis[n] = full_addr->srose_digis[n];
765 } else {
766 if (rose->dest_ndigis == 1) {
767 rose->dest_digis[0] = addr->srose_digi;
768 }
769 }
770
771 /* Move to connecting socket, start sending Connect Requests */
772 sock->state = SS_CONNECTING;
773 sk->sk_state = TCP_SYN_SENT;
774
775 rose->state = ROSE_STATE_1;
776
777 rose->neighbour->use++;
778
779 rose_write_internal(sk, ROSE_CALL_REQUEST);
780 rose_start_heartbeat(sk);
781 rose_start_t1timer(sk);
782
783 /* Now the loop */
784 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
785 return -EINPROGRESS;
786
787 /*
788 * A Connect Ack with Choke or timeout or failed routing will go to
789 * closed.
790 */
791 if (sk->sk_state == TCP_SYN_SENT) {
792 struct task_struct *tsk = current;
793 DECLARE_WAITQUEUE(wait, tsk);
794
795 add_wait_queue(sk->sk_sleep, &wait);
796 for (;;) {
797 set_current_state(TASK_INTERRUPTIBLE);
798 if (sk->sk_state != TCP_SYN_SENT)
799 break;
800 if (!signal_pending(tsk)) {
801 schedule();
802 continue;
803 }
804 current->state = TASK_RUNNING;
805 remove_wait_queue(sk->sk_sleep, &wait);
806 return -ERESTARTSYS;
807 }
808 current->state = TASK_RUNNING;
809 remove_wait_queue(sk->sk_sleep, &wait);
810 }
811
812 if (sk->sk_state != TCP_ESTABLISHED) {
813 sock->state = SS_UNCONNECTED;
814 return sock_error(sk); /* Always set at this point */
815 }
816
817 sock->state = SS_CONNECTED;
818
819 return 0;
820 }
821
822 static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
823 {
824 struct task_struct *tsk = current;
825 DECLARE_WAITQUEUE(wait, tsk);
826 struct sk_buff *skb;
827 struct sock *newsk;
828 struct sock *sk;
829 int err = 0;
830
831 if ((sk = sock->sk) == NULL)
832 return -EINVAL;
833
834 lock_sock(sk);
835 if (sk->sk_type != SOCK_SEQPACKET) {
836 err = -EOPNOTSUPP;
837 goto out;
838 }
839
840 if (sk->sk_state != TCP_LISTEN) {
841 err = -EINVAL;
842 goto out;
843 }
844
845 /*
846 * The write queue this time is holding sockets ready to use
847 * hooked into the SABM we saved
848 */
849 add_wait_queue(sk->sk_sleep, &wait);
850 for (;;) {
851 skb = skb_dequeue(&sk->sk_receive_queue);
852 if (skb)
853 break;
854
855 current->state = TASK_INTERRUPTIBLE;
856 release_sock(sk);
857 if (flags & O_NONBLOCK) {
858 current->state = TASK_RUNNING;
859 remove_wait_queue(sk->sk_sleep, &wait);
860 return -EWOULDBLOCK;
861 }
862 if (!signal_pending(tsk)) {
863 schedule();
864 lock_sock(sk);
865 continue;
866 }
867 return -ERESTARTSYS;
868 }
869 current->state = TASK_RUNNING;
870 remove_wait_queue(sk->sk_sleep, &wait);
871
872 newsk = skb->sk;
873 newsk->sk_socket = newsock;
874 newsk->sk_sleep = &newsock->wait;
875
876 /* Now attach up the new socket */
877 skb->sk = NULL;
878 kfree_skb(skb);
879 sk->sk_ack_backlog--;
880 newsock->sk = newsk;
881
882 out:
883 release_sock(sk);
884
885 return err;
886 }
887
888 static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
889 int *uaddr_len, int peer)
890 {
891 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
892 struct sock *sk = sock->sk;
893 struct rose_sock *rose = rose_sk(sk);
894 int n;
895
896 if (peer != 0) {
897 if (sk->sk_state != TCP_ESTABLISHED)
898 return -ENOTCONN;
899 srose->srose_family = AF_ROSE;
900 srose->srose_addr = rose->dest_addr;
901 srose->srose_call = rose->dest_call;
902 srose->srose_ndigis = rose->dest_ndigis;
903 for (n = 0; n < rose->dest_ndigis; n++)
904 srose->srose_digis[n] = rose->dest_digis[n];
905 } else {
906 srose->srose_family = AF_ROSE;
907 srose->srose_addr = rose->source_addr;
908 srose->srose_call = rose->source_call;
909 srose->srose_ndigis = rose->source_ndigis;
910 for (n = 0; n < rose->source_ndigis; n++)
911 srose->srose_digis[n] = rose->source_digis[n];
912 }
913
914 *uaddr_len = sizeof(struct full_sockaddr_rose);
915 return 0;
916 }
917
918 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
919 {
920 struct sock *sk;
921 struct sock *make;
922 struct rose_sock *make_rose;
923 struct rose_facilities_struct facilities;
924 int n, len;
925
926 skb->sk = NULL; /* Initially we don't know who it's for */
927
928 /*
929 * skb->data points to the rose frame start
930 */
931 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
932
933 len = (((skb->data[3] >> 4) & 0x0F) + 1) / 2;
934 len += (((skb->data[3] >> 0) & 0x0F) + 1) / 2;
935 if (!rose_parse_facilities(skb->data + len + 4, &facilities)) {
936 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
937 return 0;
938 }
939
940 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
941
942 /*
943 * We can't accept the Call Request.
944 */
945 if (sk == NULL || sk_acceptq_is_full(sk) ||
946 (make = rose_make_new(sk)) == NULL) {
947 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
948 return 0;
949 }
950
951 skb->sk = make;
952 make->sk_state = TCP_ESTABLISHED;
953 make_rose = rose_sk(make);
954
955 make_rose->lci = lci;
956 make_rose->dest_addr = facilities.dest_addr;
957 make_rose->dest_call = facilities.dest_call;
958 make_rose->dest_ndigis = facilities.dest_ndigis;
959 for (n = 0 ; n < facilities.dest_ndigis ; n++)
960 make_rose->dest_digis[n] = facilities.dest_digis[n];
961 make_rose->source_addr = facilities.source_addr;
962 make_rose->source_call = facilities.source_call;
963 make_rose->source_ndigis = facilities.source_ndigis;
964 for (n = 0 ; n < facilities.source_ndigis ; n++)
965 make_rose->source_digis[n]= facilities.source_digis[n];
966 make_rose->neighbour = neigh;
967 make_rose->device = dev;
968 make_rose->facilities = facilities;
969
970 make_rose->neighbour->use++;
971
972 if (rose_sk(sk)->defer) {
973 make_rose->state = ROSE_STATE_5;
974 } else {
975 rose_write_internal(make, ROSE_CALL_ACCEPTED);
976 make_rose->state = ROSE_STATE_3;
977 rose_start_idletimer(make);
978 }
979
980 make_rose->condition = 0x00;
981 make_rose->vs = 0;
982 make_rose->va = 0;
983 make_rose->vr = 0;
984 make_rose->vl = 0;
985 sk->sk_ack_backlog++;
986
987 rose_insert_socket(make);
988
989 skb_queue_head(&sk->sk_receive_queue, skb);
990
991 rose_start_heartbeat(make);
992
993 if (!sock_flag(sk, SOCK_DEAD))
994 sk->sk_data_ready(sk, skb->len);
995
996 return 1;
997 }
998
999 static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
1000 struct msghdr *msg, size_t len)
1001 {
1002 struct sock *sk = sock->sk;
1003 struct rose_sock *rose = rose_sk(sk);
1004 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1005 int err;
1006 struct full_sockaddr_rose srose;
1007 struct sk_buff *skb;
1008 unsigned char *asmptr;
1009 int n, size, qbit = 0;
1010
1011 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1012 return -EINVAL;
1013
1014 if (sock_flag(sk, SOCK_ZAPPED))
1015 return -EADDRNOTAVAIL;
1016
1017 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1018 send_sig(SIGPIPE, current, 0);
1019 return -EPIPE;
1020 }
1021
1022 if (rose->neighbour == NULL || rose->device == NULL)
1023 return -ENETUNREACH;
1024
1025 if (usrose != NULL) {
1026 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1027 return -EINVAL;
1028 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1029 memcpy(&srose, usrose, msg->msg_namelen);
1030 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1031 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1032 return -EISCONN;
1033 if (srose.srose_ndigis != rose->dest_ndigis)
1034 return -EISCONN;
1035 if (srose.srose_ndigis == rose->dest_ndigis) {
1036 for (n = 0 ; n < srose.srose_ndigis ; n++)
1037 if (ax25cmp(&rose->dest_digis[n],
1038 &srose.srose_digis[n]))
1039 return -EISCONN;
1040 }
1041 if (srose.srose_family != AF_ROSE)
1042 return -EINVAL;
1043 } else {
1044 if (sk->sk_state != TCP_ESTABLISHED)
1045 return -ENOTCONN;
1046
1047 srose.srose_family = AF_ROSE;
1048 srose.srose_addr = rose->dest_addr;
1049 srose.srose_call = rose->dest_call;
1050 srose.srose_ndigis = rose->dest_ndigis;
1051 for (n = 0 ; n < rose->dest_ndigis ; n++)
1052 srose.srose_digis[n] = rose->dest_digis[n];
1053 }
1054
1055 SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n");
1056
1057 /* Build a packet */
1058 SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n");
1059 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1060
1061 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1062 return err;
1063
1064 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1065
1066 /*
1067 * Put the data on the end
1068 */
1069 SOCK_DEBUG(sk, "ROSE: Appending user data\n");
1070
1071 asmptr = skb->h.raw = skb_put(skb, len);
1072
1073 err = memcpy_fromiovec(asmptr, msg->msg_iov, len);
1074 if (err) {
1075 kfree_skb(skb);
1076 return err;
1077 }
1078
1079 /*
1080 * If the Q BIT Include socket option is in force, the first
1081 * byte of the user data is the logical value of the Q Bit.
1082 */
1083 if (rose->qbitincl) {
1084 qbit = skb->data[0];
1085 skb_pull(skb, 1);
1086 }
1087
1088 /*
1089 * Push down the ROSE header
1090 */
1091 asmptr = skb_push(skb, ROSE_MIN_LEN);
1092
1093 SOCK_DEBUG(sk, "ROSE: Building Network Header.\n");
1094
1095 /* Build a ROSE Network header */
1096 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1097 asmptr[1] = (rose->lci >> 0) & 0xFF;
1098 asmptr[2] = ROSE_DATA;
1099
1100 if (qbit)
1101 asmptr[0] |= ROSE_Q_BIT;
1102
1103 SOCK_DEBUG(sk, "ROSE: Built header.\n");
1104
1105 SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n");
1106
1107 if (sk->sk_state != TCP_ESTABLISHED) {
1108 kfree_skb(skb);
1109 return -ENOTCONN;
1110 }
1111
1112 #ifdef M_BIT
1113 #define ROSE_PACLEN (256-ROSE_MIN_LEN)
1114 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1115 unsigned char header[ROSE_MIN_LEN];
1116 struct sk_buff *skbn;
1117 int frontlen;
1118 int lg;
1119
1120 /* Save a copy of the Header */
1121 memcpy(header, skb->data, ROSE_MIN_LEN);
1122 skb_pull(skb, ROSE_MIN_LEN);
1123
1124 frontlen = skb_headroom(skb);
1125
1126 while (skb->len > 0) {
1127 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1128 kfree_skb(skb);
1129 return err;
1130 }
1131
1132 skbn->sk = sk;
1133 skbn->free = 1;
1134 skbn->arp = 1;
1135
1136 skb_reserve(skbn, frontlen);
1137
1138 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1139
1140 /* Copy the user data */
1141 memcpy(skb_put(skbn, lg), skb->data, lg);
1142 skb_pull(skb, lg);
1143
1144 /* Duplicate the Header */
1145 skb_push(skbn, ROSE_MIN_LEN);
1146 memcpy(skbn->data, header, ROSE_MIN_LEN);
1147
1148 if (skb->len > 0)
1149 skbn->data[2] |= M_BIT;
1150
1151 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1152 }
1153
1154 skb->free = 1;
1155 kfree_skb(skb);
1156 } else {
1157 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1158 }
1159 #else
1160 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1161 #endif
1162
1163 rose_kick(sk);
1164
1165 return len;
1166 }
1167
1168
1169 static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1170 struct msghdr *msg, size_t size, int flags)
1171 {
1172 struct sock *sk = sock->sk;
1173 struct rose_sock *rose = rose_sk(sk);
1174 struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
1175 size_t copied;
1176 unsigned char *asmptr;
1177 struct sk_buff *skb;
1178 int n, er, qbit;
1179
1180 /*
1181 * This works for seqpacket too. The receiver has ordered the queue for
1182 * us! We do one quick check first though
1183 */
1184 if (sk->sk_state != TCP_ESTABLISHED)
1185 return -ENOTCONN;
1186
1187 /* Now we can treat all alike */
1188 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1189 return er;
1190
1191 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1192
1193 skb_pull(skb, ROSE_MIN_LEN);
1194
1195 if (rose->qbitincl) {
1196 asmptr = skb_push(skb, 1);
1197 *asmptr = qbit;
1198 }
1199
1200 skb->h.raw = skb->data;
1201 copied = skb->len;
1202
1203 if (copied > size) {
1204 copied = size;
1205 msg->msg_flags |= MSG_TRUNC;
1206 }
1207
1208 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1209
1210 if (srose != NULL) {
1211 srose->srose_family = AF_ROSE;
1212 srose->srose_addr = rose->dest_addr;
1213 srose->srose_call = rose->dest_call;
1214 srose->srose_ndigis = rose->dest_ndigis;
1215 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
1216 struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
1217 for (n = 0 ; n < rose->dest_ndigis ; n++)
1218 full_srose->srose_digis[n] = rose->dest_digis[n];
1219 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1220 } else {
1221 if (rose->dest_ndigis >= 1) {
1222 srose->srose_ndigis = 1;
1223 srose->srose_digi = rose->dest_digis[0];
1224 }
1225 msg->msg_namelen = sizeof(struct sockaddr_rose);
1226 }
1227 }
1228
1229 skb_free_datagram(sk, skb);
1230
1231 return copied;
1232 }
1233
1234
1235 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1236 {
1237 struct sock *sk = sock->sk;
1238 struct rose_sock *rose = rose_sk(sk);
1239 void __user *argp = (void __user *)arg;
1240
1241 switch (cmd) {
1242 case TIOCOUTQ: {
1243 long amount;
1244 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
1245 if (amount < 0)
1246 amount = 0;
1247 return put_user(amount, (unsigned int __user *) argp);
1248 }
1249
1250 case TIOCINQ: {
1251 struct sk_buff *skb;
1252 long amount = 0L;
1253 /* These two are safe on a single CPU system as only user tasks fiddle here */
1254 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1255 amount = skb->len;
1256 return put_user(amount, (unsigned int __user *) argp);
1257 }
1258
1259 case SIOCGSTAMP:
1260 return sock_get_timestamp(sk, (struct timeval __user *) argp);
1261
1262 case SIOCGIFADDR:
1263 case SIOCSIFADDR:
1264 case SIOCGIFDSTADDR:
1265 case SIOCSIFDSTADDR:
1266 case SIOCGIFBRDADDR:
1267 case SIOCSIFBRDADDR:
1268 case SIOCGIFNETMASK:
1269 case SIOCSIFNETMASK:
1270 case SIOCGIFMETRIC:
1271 case SIOCSIFMETRIC:
1272 return -EINVAL;
1273
1274 case SIOCADDRT:
1275 case SIOCDELRT:
1276 case SIOCRSCLRRT:
1277 if (!capable(CAP_NET_ADMIN))
1278 return -EPERM;
1279 return rose_rt_ioctl(cmd, argp);
1280
1281 case SIOCRSGCAUSE: {
1282 struct rose_cause_struct rose_cause;
1283 rose_cause.cause = rose->cause;
1284 rose_cause.diagnostic = rose->diagnostic;
1285 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1286 }
1287
1288 case SIOCRSSCAUSE: {
1289 struct rose_cause_struct rose_cause;
1290 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1291 return -EFAULT;
1292 rose->cause = rose_cause.cause;
1293 rose->diagnostic = rose_cause.diagnostic;
1294 return 0;
1295 }
1296
1297 case SIOCRSSL2CALL:
1298 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1299 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1300 ax25_listen_release(&rose_callsign, NULL);
1301 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1302 return -EFAULT;
1303 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1304 ax25_listen_register(&rose_callsign, NULL);
1305 return 0;
1306
1307 case SIOCRSGL2CALL:
1308 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1309
1310 case SIOCRSACCEPT:
1311 if (rose->state == ROSE_STATE_5) {
1312 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1313 rose_start_idletimer(sk);
1314 rose->condition = 0x00;
1315 rose->vs = 0;
1316 rose->va = 0;
1317 rose->vr = 0;
1318 rose->vl = 0;
1319 rose->state = ROSE_STATE_3;
1320 }
1321 return 0;
1322
1323 default:
1324 return -ENOIOCTLCMD;
1325 }
1326
1327 return 0;
1328 }
1329
1330 #ifdef CONFIG_PROC_FS
1331 static void *rose_info_start(struct seq_file *seq, loff_t *pos)
1332 {
1333 int i;
1334 struct sock *s;
1335 struct hlist_node *node;
1336
1337 spin_lock_bh(&rose_list_lock);
1338 if (*pos == 0)
1339 return SEQ_START_TOKEN;
1340
1341 i = 1;
1342 sk_for_each(s, node, &rose_list) {
1343 if (i == *pos)
1344 return s;
1345 ++i;
1346 }
1347 return NULL;
1348 }
1349
1350 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1351 {
1352 ++*pos;
1353
1354 return (v == SEQ_START_TOKEN) ? sk_head(&rose_list)
1355 : sk_next((struct sock *)v);
1356 }
1357
1358 static void rose_info_stop(struct seq_file *seq, void *v)
1359 {
1360 spin_unlock_bh(&rose_list_lock);
1361 }
1362
1363 static int rose_info_show(struct seq_file *seq, void *v)
1364 {
1365 char buf[11];
1366
1367 if (v == SEQ_START_TOKEN)
1368 seq_puts(seq,
1369 "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");
1370
1371 else {
1372 struct sock *s = v;
1373 struct rose_sock *rose = rose_sk(s);
1374 const char *devname, *callsign;
1375 const struct net_device *dev = rose->device;
1376
1377 if (!dev)
1378 devname = "???";
1379 else
1380 devname = dev->name;
1381
1382 seq_printf(seq, "%-10s %-9s ",
1383 rose2asc(&rose->dest_addr),
1384 ax2asc(buf, &rose->dest_call));
1385
1386 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1387 callsign = "??????-?";
1388 else
1389 callsign = ax2asc(buf, &rose->source_call);
1390
1391 seq_printf(seq,
1392 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
1393 rose2asc(&rose->source_addr),
1394 callsign,
1395 devname,
1396 rose->lci & 0x0FFF,
1397 (rose->neighbour) ? rose->neighbour->number : 0,
1398 rose->state,
1399 rose->vs,
1400 rose->vr,
1401 rose->va,
1402 ax25_display_timer(&rose->timer) / HZ,
1403 rose->t1 / HZ,
1404 rose->t2 / HZ,
1405 rose->t3 / HZ,
1406 rose->hb / HZ,
1407 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1408 rose->idle / (60 * HZ),
1409 atomic_read(&s->sk_wmem_alloc),
1410 atomic_read(&s->sk_rmem_alloc),
1411 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1412 }
1413
1414 return 0;
1415 }
1416
1417 static struct seq_operations rose_info_seqops = {
1418 .start = rose_info_start,
1419 .next = rose_info_next,
1420 .stop = rose_info_stop,
1421 .show = rose_info_show,
1422 };
1423
1424 static int rose_info_open(struct inode *inode, struct file *file)
1425 {
1426 return seq_open(file, &rose_info_seqops);
1427 }
1428
1429 static struct file_operations rose_info_fops = {
1430 .owner = THIS_MODULE,
1431 .open = rose_info_open,
1432 .read = seq_read,
1433 .llseek = seq_lseek,
1434 .release = seq_release,
1435 };
1436 #endif /* CONFIG_PROC_FS */
1437
1438 static struct net_proto_family rose_family_ops = {
1439 .family = PF_ROSE,
1440 .create = rose_create,
1441 .owner = THIS_MODULE,
1442 };
1443
1444 static struct proto_ops rose_proto_ops = {
1445 .family = PF_ROSE,
1446 .owner = THIS_MODULE,
1447 .release = rose_release,
1448 .bind = rose_bind,
1449 .connect = rose_connect,
1450 .socketpair = sock_no_socketpair,
1451 .accept = rose_accept,
1452 .getname = rose_getname,
1453 .poll = datagram_poll,
1454 .ioctl = rose_ioctl,
1455 .listen = rose_listen,
1456 .shutdown = sock_no_shutdown,
1457 .setsockopt = rose_setsockopt,
1458 .getsockopt = rose_getsockopt,
1459 .sendmsg = rose_sendmsg,
1460 .recvmsg = rose_recvmsg,
1461 .mmap = sock_no_mmap,
1462 .sendpage = sock_no_sendpage,
1463 };
1464
1465 static struct notifier_block rose_dev_notifier = {
1466 .notifier_call = rose_device_event,
1467 };
1468
1469 static struct net_device **dev_rose;
1470
1471 static int __init rose_proto_init(void)
1472 {
1473 int i;
1474 int rc;
1475
1476 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1477 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1478 rc = -EINVAL;
1479 goto out;
1480 }
1481
1482 rc = proto_register(&rose_proto, 0);
1483 if (rc != 0)
1484 goto out;
1485
1486 rose_callsign = null_ax25_address;
1487
1488 dev_rose = kmalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
1489 if (dev_rose == NULL) {
1490 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
1491 rc = -ENOMEM;
1492 goto out_proto_unregister;
1493 }
1494
1495 memset(dev_rose, 0x00, rose_ndevs * sizeof(struct net_device*));
1496 for (i = 0; i < rose_ndevs; i++) {
1497 struct net_device *dev;
1498 char name[IFNAMSIZ];
1499
1500 sprintf(name, "rose%d", i);
1501 dev = alloc_netdev(sizeof(struct net_device_stats),
1502 name, rose_setup);
1503 if (!dev) {
1504 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
1505 rc = -ENOMEM;
1506 goto fail;
1507 }
1508 rc = register_netdev(dev);
1509 if (rc) {
1510 printk(KERN_ERR "ROSE: netdevice registration failed\n");
1511 free_netdev(dev);
1512 goto fail;
1513 }
1514 dev_rose[i] = dev;
1515 }
1516
1517 sock_register(&rose_family_ops);
1518 register_netdevice_notifier(&rose_dev_notifier);
1519
1520 ax25_protocol_register(AX25_P_ROSE, rose_route_frame);
1521 ax25_linkfail_register(rose_link_failed);
1522
1523 #ifdef CONFIG_SYSCTL
1524 rose_register_sysctl();
1525 #endif
1526 rose_loopback_init();
1527
1528 rose_add_loopback_neigh();
1529
1530 proc_net_fops_create("rose", S_IRUGO, &rose_info_fops);
1531 proc_net_fops_create("rose_neigh", S_IRUGO, &rose_neigh_fops);
1532 proc_net_fops_create("rose_nodes", S_IRUGO, &rose_nodes_fops);
1533 proc_net_fops_create("rose_routes", S_IRUGO, &rose_routes_fops);
1534 out:
1535 return rc;
1536 fail:
1537 while (--i >= 0) {
1538 unregister_netdev(dev_rose[i]);
1539 free_netdev(dev_rose[i]);
1540 }
1541 kfree(dev_rose);
1542 out_proto_unregister:
1543 proto_unregister(&rose_proto);
1544 goto out;
1545 }
1546 module_init(rose_proto_init);
1547
1548 module_param(rose_ndevs, int, 0);
1549 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1550
1551 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1552 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1553 MODULE_LICENSE("GPL");
1554 MODULE_ALIAS_NETPROTO(PF_ROSE);
1555
1556 static void __exit rose_exit(void)
1557 {
1558 int i;
1559
1560 proc_net_remove("rose");
1561 proc_net_remove("rose_neigh");
1562 proc_net_remove("rose_nodes");
1563 proc_net_remove("rose_routes");
1564 rose_loopback_clear();
1565
1566 rose_rt_free();
1567
1568 ax25_protocol_release(AX25_P_ROSE);
1569 ax25_linkfail_release(rose_link_failed);
1570
1571 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1572 ax25_listen_release(&rose_callsign, NULL);
1573
1574 #ifdef CONFIG_SYSCTL
1575 rose_unregister_sysctl();
1576 #endif
1577 unregister_netdevice_notifier(&rose_dev_notifier);
1578
1579 sock_unregister(PF_ROSE);
1580
1581 for (i = 0; i < rose_ndevs; i++) {
1582 struct net_device *dev = dev_rose[i];
1583
1584 if (dev) {
1585 unregister_netdev(dev);
1586 free_netdev(dev);
1587 }
1588 }
1589
1590 kfree(dev_rose);
1591 proto_unregister(&rose_proto);
1592 }
1593
1594 module_exit(rose_exit);
Linux kernel - Deliverables
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