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netdev: Allocate multiple queues for TX.
[net-next-2.6.git] / net / rose / af_rose.c
CommitLineData
1da177e4
LT		 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 */
4fc268d2 12
4fc268d2 13#include <linux/capability.h>
1da177e4
LT		 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>
457c4cbc 29#include <net/net_namespace.h>
1da177e4
LT		 30#include <net/ax25.h>
31#include <linux/inet.h>
32#include <linux/netdevice.h>
33#include <linux/if_arp.h>
34#include <linux/skbuff.h>
35#include <net/sock.h>
36#include <asm/system.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>
c752f073 46#include <net/tcp_states.h>
1da177e4
LT		 47#include <net/ip.h>
48#include <net/arp.h>
49
50static int rose_ndevs = 10;
51
52int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
53int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1;
54int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2;
55int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3;
56int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE;
57int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB;
58int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING;
59int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT;
60int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC;
61int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE;
62
63static HLIST_HEAD(rose_list);
64static DEFINE_SPINLOCK(rose_list_lock);
65
66static struct proto_ops rose_proto_ops;
67
68ax25_address rose_callsign;
69
b1d21ca8
RB		 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 */
76static struct lock_class_key rose_netdev_xmit_lock_key;
77
e8a0464c
DM		 78static void rose_set_lockdep_one(struct net_device *dev,
79 struct netdev_queue *txq,
80 void *_unused)
c773e847
DM		 81{
82 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
83}
84
85static void rose_set_lockdep_key(struct net_device *dev)
86{
e8a0464c 87 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
c773e847
DM		 88}
89
1da177e4
LT		 90/*
91 * Convert a ROSE address into text.
92 */
93const char *rose2asc(const rose_address *addr)
94{
95 static char buffer[11];
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(buffer, "*");
101 } else {
102 sprintf(buffer, "%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 buffer;
110}
111
112/*
113 * Compare two ROSE addresses, 0 == equal.
114 */
115int rosecmp(rose_address *addr1, rose_address *addr2)
116{
117 int i;
118
119 for (i = 0; i < 5; i++)
120 if (addr1->rose_addr[i] != addr2->rose_addr[i])
121 return 1;
122
123 return 0;
124}
125
126/*
127 * Compare two ROSE addresses for only mask digits, 0 == equal.
128 */
129int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
130{
95b7d924 131 unsigned int i, j;
1da177e4
LT		 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 */
154static void rose_remove_socket(struct sock *sk)
155{
156 spin_lock_bh(&rose_list_lock);
157 sk_del_node_init(sk);
158 spin_unlock_bh(&rose_list_lock);
159}
160
161/*
162 * Kill all bound sockets on a broken link layer connection to a
163 * particular neighbour.
164 */
165void rose_kill_by_neigh(struct rose_neigh *neigh)
166{
167 struct sock *s;
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->neighbour == neigh) {
175 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
176 rose->neighbour->use--;
177 rose->neighbour = NULL;
178 }
179 }
180 spin_unlock_bh(&rose_list_lock);
181}
182
183/*
184 * Kill all bound sockets on a dropped device.
185 */
186static void rose_kill_by_device(struct net_device *dev)
187{
188 struct sock *s;
189 struct hlist_node *node;
190
191 spin_lock_bh(&rose_list_lock);
192 sk_for_each(s, node, &rose_list) {
193 struct rose_sock *rose = rose_sk(s);
194
195 if (rose->device == dev) {
196 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
197 rose->neighbour->use--;
198 rose->device = NULL;
199 }
200 }
201 spin_unlock_bh(&rose_list_lock);
202}
203
204/*
205 * Handle device status changes.
206 */
207static int rose_device_event(struct notifier_block *this, unsigned long event,
208 void *ptr)
209{
210 struct net_device *dev = (struct net_device *)ptr;
211
c346dca1 212 if (dev_net(dev) != &init_net)
e9dc8653
EB		 213 return NOTIFY_DONE;
214
1da177e4
LT		 215 if (event != NETDEV_DOWN)
216 return NOTIFY_DONE;
217
218 switch (dev->type) {
219 case ARPHRD_ROSE:
220 rose_kill_by_device(dev);
221 break;
222 case ARPHRD_AX25:
223 rose_link_device_down(dev);
224 rose_rt_device_down(dev);
225 break;
226 }
227
228 return NOTIFY_DONE;
229}
230
231/*
232 * Add a socket to the bound sockets list.
233 */
234static void rose_insert_socket(struct sock *sk)
235{
236
237 spin_lock_bh(&rose_list_lock);
238 sk_add_node(sk, &rose_list);
239 spin_unlock_bh(&rose_list_lock);
240}
241
242/*
243 * Find a socket that wants to accept the Call Request we just
244 * received.
245 */
246static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
247{
248 struct sock *s;
249 struct hlist_node *node;
250
251 spin_lock_bh(&rose_list_lock);
252 sk_for_each(s, node, &rose_list) {
253 struct rose_sock *rose = rose_sk(s);
254
255 if (!rosecmp(&rose->source_addr, addr) &&
256 !ax25cmp(&rose->source_call, call) &&
257 !rose->source_ndigis && s->sk_state == TCP_LISTEN)
258 goto found;
259 }
260
261 sk_for_each(s, node, &rose_list) {
262 struct rose_sock *rose = rose_sk(s);
263
264 if (!rosecmp(&rose->source_addr, addr) &&
265 !ax25cmp(&rose->source_call, &null_ax25_address) &&
266 s->sk_state == TCP_LISTEN)
267 goto found;
268 }
269 s = NULL;
270found:
271 spin_unlock_bh(&rose_list_lock);
272 return s;
273}
274
275/*
276 * Find a connected ROSE socket given my LCI and device.
277 */
278struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
279{
280 struct sock *s;
281 struct hlist_node *node;
282
283 spin_lock_bh(&rose_list_lock);
284 sk_for_each(s, node, &rose_list) {
285 struct rose_sock *rose = rose_sk(s);
286
287 if (rose->lci == lci && rose->neighbour == neigh)
288 goto found;
289 }
290 s = NULL;
291found:
292 spin_unlock_bh(&rose_list_lock);
293 return s;
294}
295
296/*
297 * Find a unique LCI for a given device.
298 */
299unsigned int rose_new_lci(struct rose_neigh *neigh)
300{
301 int lci;
302
303 if (neigh->dce_mode) {
304 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
305 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
306 return lci;
307 } else {
308 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
309 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
310 return lci;
311 }
312
313 return 0;
314}
315
316/*
317 * Deferred destroy.
318 */
319void rose_destroy_socket(struct sock *);
320
321/*
322 * Handler for deferred kills.
323 */
324static void rose_destroy_timer(unsigned long data)
325{
326 rose_destroy_socket((struct sock *)data);
327}
328
329/*
330 * This is called from user mode and the timers. Thus it protects itself
331 * against interrupt users but doesn't worry about being called during
332 * work. Once it is removed from the queue no interrupt or bottom half
333 * will touch it and we are (fairly 8-) ) safe.
334 */
335void rose_destroy_socket(struct sock *sk)
336{
337 struct sk_buff *skb;
338
339 rose_remove_socket(sk);
340 rose_stop_heartbeat(sk);
341 rose_stop_idletimer(sk);
342 rose_stop_timer(sk);
343
344 rose_clear_queues(sk); /* Flush the queues */
345
346 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
347 if (skb->sk != sk) { /* A pending connection */
348 /* Queue the unaccepted socket for death */
349 sock_set_flag(skb->sk, SOCK_DEAD);
350 rose_start_heartbeat(skb->sk);
351 rose_sk(skb->sk)->state = ROSE_STATE_0;
352 }
353
354 kfree_skb(skb);
355 }
356
357 if (atomic_read(&sk->sk_wmem_alloc) ||
358 atomic_read(&sk->sk_rmem_alloc)) {
359 /* Defer: outstanding buffers */
b24b8a24
PE		 360 setup_timer(&sk->sk_timer, rose_destroy_timer,
361 (unsigned long)sk);
1da177e4 362 sk->sk_timer.expires = jiffies + 10 * HZ;
1da177e4
LT		 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
373static int rose_setsockopt(struct socket *sock, int level, int optname,
374 char __user *optval, 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
433static 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
491static 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
510static struct proto rose_proto = {
511 .name = "ROSE",
512 .owner = THIS_MODULE,
513 .obj_size = sizeof(struct rose_sock),
514};
515
1b8d7ae4 516static int rose_create(struct net *net, struct socket *sock, int protocol)
1da177e4
LT		 517{
518 struct sock *sk;
519 struct rose_sock *rose;
520
1b8d7ae4
EB		 521 if (net != &init_net)
522 return -EAFNOSUPPORT;
523
1da177e4
LT		 524 if (sock->type != SOCK_SEQPACKET || protocol != 0)
525 return -ESOCKTNOSUPPORT;
526
6257ff21
PE		 527 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
528 if (sk == NULL)
1da177e4
LT		 529 return -ENOMEM;
530
531 rose = rose_sk(sk);
532
533 sock_init_data(sock, sk);
534
535 skb_queue_head_init(&rose->ack_queue);
536#ifdef M_BIT
537 skb_queue_head_init(&rose->frag_queue);
538 rose->fraglen = 0;
539#endif
540
541 sock->ops = &rose_proto_ops;
542 sk->sk_protocol = protocol;
543
544 init_timer(&rose->timer);
545 init_timer(&rose->idletimer);
546
82e84249
RB		 547 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
548 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
549 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
550 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
551 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
1da177e4
LT		 552
553 rose->state = ROSE_STATE_0;
554
555 return 0;
556}
557
558static struct sock *rose_make_new(struct sock *osk)
559{
560 struct sock *sk;
561 struct rose_sock *rose, *orose;
562
563 if (osk->sk_type != SOCK_SEQPACKET)
564 return NULL;
565
3b1e0a65 566 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto);
6257ff21 567 if (sk == NULL)
1da177e4
LT		 568 return NULL;
569
570 rose = rose_sk(sk);
571
572 sock_init_data(NULL, sk);
573
574 skb_queue_head_init(&rose->ack_queue);
575#ifdef M_BIT
576 skb_queue_head_init(&rose->frag_queue);
577 rose->fraglen = 0;
578#endif
579
580 sk->sk_type = osk->sk_type;
1da177e4
LT		 581 sk->sk_priority = osk->sk_priority;
582 sk->sk_protocol = osk->sk_protocol;
583 sk->sk_rcvbuf = osk->sk_rcvbuf;
584 sk->sk_sndbuf = osk->sk_sndbuf;
585 sk->sk_state = TCP_ESTABLISHED;
53b924b3 586 sock_copy_flags(sk, osk);
1da177e4
LT		 587
588 init_timer(&rose->timer);
589 init_timer(&rose->idletimer);
590
591 orose = rose_sk(osk);
592 rose->t1 = orose->t1;
593 rose->t2 = orose->t2;
594 rose->t3 = orose->t3;
595 rose->hb = orose->hb;
596 rose->idle = orose->idle;
597 rose->defer = orose->defer;
598 rose->device = orose->device;
599 rose->qbitincl = orose->qbitincl;
600
601 return sk;
602}
603
604static int rose_release(struct socket *sock)
605{
606 struct sock *sk = sock->sk;
607 struct rose_sock *rose;
608
609 if (sk == NULL) return 0;
610
4965291a
JP		 611 sock_hold(sk);
612 sock_orphan(sk);
613 lock_sock(sk);
1da177e4
LT		 614 rose = rose_sk(sk);
615
616 switch (rose->state) {
617 case ROSE_STATE_0:
4965291a 618 release_sock(sk);
1da177e4 619 rose_disconnect(sk, 0, -1, -1);
4965291a 620 lock_sock(sk);
1da177e4
LT		 621 rose_destroy_socket(sk);
622 break;
623
624 case ROSE_STATE_2:
625 rose->neighbour->use--;
4965291a 626 release_sock(sk);
1da177e4 627 rose_disconnect(sk, 0, -1, -1);
4965291a 628 lock_sock(sk);
1da177e4
LT		 629 rose_destroy_socket(sk);
630 break;
631
632 case ROSE_STATE_1:
633 case ROSE_STATE_3:
634 case ROSE_STATE_4:
635 case ROSE_STATE_5:
636 rose_clear_queues(sk);
637 rose_stop_idletimer(sk);
638 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
639 rose_start_t3timer(sk);
640 rose->state = ROSE_STATE_2;
641 sk->sk_state = TCP_CLOSE;
642 sk->sk_shutdown |= SEND_SHUTDOWN;
643 sk->sk_state_change(sk);
644 sock_set_flag(sk, SOCK_DEAD);
645 sock_set_flag(sk, SOCK_DESTROY);
646 break;
647
648 default:
649 break;
650 }
651
652 sock->sk = NULL;
4965291a
JP		 653 release_sock(sk);
654 sock_put(sk);
1da177e4
LT		 655
656 return 0;
657}
658
659static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
660{
661 struct sock *sk = sock->sk;
662 struct rose_sock *rose = rose_sk(sk);
663 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
664 struct net_device *dev;
01d7dd0e
RB		 665 ax25_address *source;
666 ax25_uid_assoc *user;
1da177e4
LT		 667 int n;
668
669 if (!sock_flag(sk, SOCK_ZAPPED))
670 return -EINVAL;
671
672 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
673 return -EINVAL;
674
675 if (addr->srose_family != AF_ROSE)
676 return -EINVAL;
677
678 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
679 return -EINVAL;
680
681 if (addr->srose_ndigis > ROSE_MAX_DIGIS)
682 return -EINVAL;
683
684 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) {
685 SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n");
686 return -EADDRNOTAVAIL;
687 }
688
689 source = &addr->srose_call;
690
01d7dd0e
RB		 691 user = ax25_findbyuid(current->euid);
692 if (user) {
693 rose->source_call = user->call;
694 ax25_uid_put(user);
695 } else {
1da177e4
LT		 696 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
697 return -EACCES;
01d7dd0e 698 rose->source_call = *source;
1da177e4
LT		 699 }
700
701 rose->source_addr = addr->srose_addr;
1da177e4
LT		 702 rose->device = dev;
703 rose->source_ndigis = addr->srose_ndigis;
704
705 if (addr_len == sizeof(struct full_sockaddr_rose)) {
706 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
707 for (n = 0 ; n < addr->srose_ndigis ; n++)
708 rose->source_digis[n] = full_addr->srose_digis[n];
709 } else {
710 if (rose->source_ndigis == 1) {
711 rose->source_digis[0] = addr->srose_digi;
712 }
713 }
714
715 rose_insert_socket(sk);
716
717 sock_reset_flag(sk, SOCK_ZAPPED);
718 SOCK_DEBUG(sk, "ROSE: socket is bound\n");
719 return 0;
720}
721
722static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
723{
724 struct sock *sk = sock->sk;
725 struct rose_sock *rose = rose_sk(sk);
726 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
727 unsigned char cause, diagnostic;
1da177e4 728 struct net_device *dev;
01d7dd0e 729 ax25_uid_assoc *user;
2536b94a 730 int n, err = 0;
1da177e4
LT		 731
732 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
733 return -EINVAL;
734
735 if (addr->srose_family != AF_ROSE)
736 return -EINVAL;
737
738 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
739 return -EINVAL;
740
741 if (addr->srose_ndigis > ROSE_MAX_DIGIS)
742 return -EINVAL;
743
744 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
745 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
746 return -EINVAL;
747
2536b94a
RB		 748 lock_sock(sk);
749
750 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
751 /* Connect completed during a ERESTARTSYS event */
752 sock->state = SS_CONNECTED;
753 goto out_release;
754 }
755
756 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
757 sock->state = SS_UNCONNECTED;
758 err = -ECONNREFUSED;
759 goto out_release;
760 }
761
762 if (sk->sk_state == TCP_ESTABLISHED) {
763 /* No reconnect on a seqpacket socket */
764 err = -EISCONN;
765 goto out_release;
766 }
767
768 sk->sk_state = TCP_CLOSE;
769 sock->state = SS_UNCONNECTED;
770
1da177e4 771 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
fe2c802a 772 &diagnostic, 0);
43837b1e
BP		 773 if (!rose->neighbour) {
774 err = -ENETUNREACH;
775 goto out_release;
776 }
1da177e4
LT		 777
778 rose->lci = rose_new_lci(rose->neighbour);
2536b94a
RB		 779 if (!rose->lci) {
780 err = -ENETUNREACH;
781 goto out_release;
782 }
1da177e4
LT		 783
784 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
785 sock_reset_flag(sk, SOCK_ZAPPED);
786
2536b94a
RB		 787 if ((dev = rose_dev_first()) == NULL) {
788 err = -ENETUNREACH;
789 goto out_release;
790 }
1da177e4 791
01d7dd0e 792 user = ax25_findbyuid(current->euid);
2536b94a
RB		 793 if (!user) {
794 err = -EINVAL;
795 goto out_release;
796 }
1da177e4
LT		 797
798 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
01d7dd0e 799 rose->source_call = user->call;
1da177e4 800 rose->device = dev;
01d7dd0e 801 ax25_uid_put(user);
1da177e4
LT		 802
803 rose_insert_socket(sk); /* Finish the bind */
804 }
d85838c5 805rose_try_next_neigh:
1da177e4
LT		 806 rose->dest_addr = addr->srose_addr;
807 rose->dest_call = addr->srose_call;
808 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
809 rose->dest_ndigis = addr->srose_ndigis;
810
811 if (addr_len == sizeof(struct full_sockaddr_rose)) {
812 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
813 for (n = 0 ; n < addr->srose_ndigis ; n++)
814 rose->dest_digis[n] = full_addr->srose_digis[n];
815 } else {
816 if (rose->dest_ndigis == 1) {
817 rose->dest_digis[0] = addr->srose_digi;
818 }
819 }
820
821 /* Move to connecting socket, start sending Connect Requests */
822 sock->state = SS_CONNECTING;
823 sk->sk_state = TCP_SYN_SENT;
824
825 rose->state = ROSE_STATE_1;
826
827 rose->neighbour->use++;
828
829 rose_write_internal(sk, ROSE_CALL_REQUEST);
830 rose_start_heartbeat(sk);
831 rose_start_t1timer(sk);
832
833 /* Now the loop */
2536b94a
RB		 834 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
835 err = -EINPROGRESS;
836 goto out_release;
837 }
1da177e4
LT		 838
839 /*
840 * A Connect Ack with Choke or timeout or failed routing will go to
841 * closed.
842 */
843 if (sk->sk_state == TCP_SYN_SENT) {
75606dc6 844 DEFINE_WAIT(wait);
1da177e4 845
1da177e4 846 for (;;) {
75606dc6 847 prepare_to_wait(sk->sk_sleep, &wait,
6140efb5 848 TASK_INTERRUPTIBLE);
1da177e4
LT		 849 if (sk->sk_state != TCP_SYN_SENT)
850 break;
75606dc6
RB		 851 if (!signal_pending(current)) {
852 release_sock(sk);
1da177e4 853 schedule();
2536b94a 854 lock_sock(sk);
1da177e4
LT		 855 continue;
856 }
75606dc6
RB		 857 err = -ERESTARTSYS;
858 break;
1da177e4 859 }
75606dc6
RB		 860 finish_wait(sk->sk_sleep, &wait);
861
862 if (err)
863 goto out_release;
1da177e4
LT		 864 }
865
866 if (sk->sk_state != TCP_ESTABLISHED) {
d85838c5 867 /* Try next neighbour */
fe2c802a 868 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, &diagnostic, 0);
d85838c5
RB		 869 if (rose->neighbour)
870 goto rose_try_next_neigh;
2536b94a
RB		 871
872 /* No more neighbours */
1da177e4 873 sock->state = SS_UNCONNECTED;
2536b94a
RB		 874 err = sock_error(sk); /* Always set at this point */
875 goto out_release;
1da177e4
LT		 876 }
877
878 sock->state = SS_CONNECTED;
879
2536b94a
RB		 880out_release:
881 release_sock(sk);
882
883 return err;
1da177e4
LT		 884}
885
886static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
887{
1da177e4
LT		 888 struct sk_buff *skb;
889 struct sock *newsk;
75606dc6 890 DEFINE_WAIT(wait);
1da177e4
LT		 891 struct sock *sk;
892 int err = 0;
893
894 if ((sk = sock->sk) == NULL)
895 return -EINVAL;
896
897 lock_sock(sk);
898 if (sk->sk_type != SOCK_SEQPACKET) {
899 err = -EOPNOTSUPP;
75606dc6 900 goto out_release;
1da177e4
LT		 901 }
902
903 if (sk->sk_state != TCP_LISTEN) {
904 err = -EINVAL;
75606dc6 905 goto out_release;
1da177e4
LT		 906 }
907
908 /*
909 * The write queue this time is holding sockets ready to use
910 * hooked into the SABM we saved
911 */
1da177e4 912 for (;;) {
75606dc6
RB		 913 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
914
1da177e4
LT		 915 skb = skb_dequeue(&sk->sk_receive_queue);
916 if (skb)
917 break;
918
1da177e4 919 if (flags & O_NONBLOCK) {
75606dc6
RB		 920 err = -EWOULDBLOCK;
921 break;
1da177e4 922 }
75606dc6
RB		 923 if (!signal_pending(current)) {
924 release_sock(sk);
1da177e4
LT		 925 schedule();
926 lock_sock(sk);
927 continue;
928 }
75606dc6
RB		 929 err = -ERESTARTSYS;
930 break;
1da177e4 931 }
75606dc6
RB		 932 finish_wait(sk->sk_sleep, &wait);
933 if (err)
934 goto out_release;
1da177e4
LT		 935
936 newsk = skb->sk;
44ccff1f 937 sock_graft(newsk, newsock);
1da177e4
LT		 938
939 /* Now attach up the new socket */
940 skb->sk = NULL;
941 kfree_skb(skb);
942 sk->sk_ack_backlog--;
1da177e4 943
75606dc6 944out_release:
1da177e4
LT		 945 release_sock(sk);
946
947 return err;
948}
949
950static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
951 int *uaddr_len, int peer)
952{
953 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
954 struct sock *sk = sock->sk;
955 struct rose_sock *rose = rose_sk(sk);
956 int n;
957
958 if (peer != 0) {
959 if (sk->sk_state != TCP_ESTABLISHED)
960 return -ENOTCONN;
961 srose->srose_family = AF_ROSE;
962 srose->srose_addr = rose->dest_addr;
963 srose->srose_call = rose->dest_call;
964 srose->srose_ndigis = rose->dest_ndigis;
965 for (n = 0; n < rose->dest_ndigis; n++)
966 srose->srose_digis[n] = rose->dest_digis[n];
967 } else {
968 srose->srose_family = AF_ROSE;
969 srose->srose_addr = rose->source_addr;
970 srose->srose_call = rose->source_call;
971 srose->srose_ndigis = rose->source_ndigis;
972 for (n = 0; n < rose->source_ndigis; n++)
973 srose->srose_digis[n] = rose->source_digis[n];
974 }
975
976 *uaddr_len = sizeof(struct full_sockaddr_rose);
977 return 0;
978}
979
980int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
981{
982 struct sock *sk;
983 struct sock *make;
984 struct rose_sock *make_rose;
985 struct rose_facilities_struct facilities;
986 int n, len;
987
988 skb->sk = NULL; /* Initially we don't know who it's for */
989
990 /*
991 * skb->data points to the rose frame start
992 */
993 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
994
95b7d924
ED		 995 len = (((skb->data[3] >> 4) & 0x0F) + 1) >> 1;
996 len += (((skb->data[3] >> 0) & 0x0F) + 1) >> 1;
1da177e4
LT		 997 if (!rose_parse_facilities(skb->data + len + 4, &facilities)) {
998 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
999 return 0;
1000 }
1001
1002 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
1003
1004 /*
1005 * We can't accept the Call Request.
1006 */
1007 if (sk == NULL || sk_acceptq_is_full(sk) ||
1008 (make = rose_make_new(sk)) == NULL) {
1009 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
1010 return 0;
1011 }
1012
1013 skb->sk = make;
1014 make->sk_state = TCP_ESTABLISHED;
1015 make_rose = rose_sk(make);
1016
1017 make_rose->lci = lci;
1018 make_rose->dest_addr = facilities.dest_addr;
1019 make_rose->dest_call = facilities.dest_call;
1020 make_rose->dest_ndigis = facilities.dest_ndigis;
1021 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1022 make_rose->dest_digis[n] = facilities.dest_digis[n];
1023 make_rose->source_addr = facilities.source_addr;
1024 make_rose->source_call = facilities.source_call;
1025 make_rose->source_ndigis = facilities.source_ndigis;
1026 for (n = 0 ; n < facilities.source_ndigis ; n++)
1027 make_rose->source_digis[n]= facilities.source_digis[n];
1028 make_rose->neighbour = neigh;
1029 make_rose->device = dev;
1030 make_rose->facilities = facilities;
1031
1032 make_rose->neighbour->use++;
1033
1034 if (rose_sk(sk)->defer) {
1035 make_rose->state = ROSE_STATE_5;
1036 } else {
1037 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1038 make_rose->state = ROSE_STATE_3;
1039 rose_start_idletimer(make);
1040 }
1041
1042 make_rose->condition = 0x00;
1043 make_rose->vs = 0;
1044 make_rose->va = 0;
1045 make_rose->vr = 0;
1046 make_rose->vl = 0;
1047 sk->sk_ack_backlog++;
1048
1049 rose_insert_socket(make);
1050
1051 skb_queue_head(&sk->sk_receive_queue, skb);
1052
1053 rose_start_heartbeat(make);
1054
1055 if (!sock_flag(sk, SOCK_DEAD))
1056 sk->sk_data_ready(sk, skb->len);
1057
1058 return 1;
1059}
1060
1061static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
1062 struct msghdr *msg, size_t len)
1063{
1064 struct sock *sk = sock->sk;
1065 struct rose_sock *rose = rose_sk(sk);
1066 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1067 int err;
1068 struct full_sockaddr_rose srose;
1069 struct sk_buff *skb;
1070 unsigned char *asmptr;
1071 int n, size, qbit = 0;
1072
1073 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1074 return -EINVAL;
1075
1076 if (sock_flag(sk, SOCK_ZAPPED))
1077 return -EADDRNOTAVAIL;
1078
1079 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1080 send_sig(SIGPIPE, current, 0);
1081 return -EPIPE;
1082 }
1083
1084 if (rose->neighbour == NULL || rose->device == NULL)
1085 return -ENETUNREACH;
1086
1087 if (usrose != NULL) {
1088 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1089 return -EINVAL;
1090 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1091 memcpy(&srose, usrose, msg->msg_namelen);
1092 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1093 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1094 return -EISCONN;
1095 if (srose.srose_ndigis != rose->dest_ndigis)
1096 return -EISCONN;
1097 if (srose.srose_ndigis == rose->dest_ndigis) {
1098 for (n = 0 ; n < srose.srose_ndigis ; n++)
1099 if (ax25cmp(&rose->dest_digis[n],
1100 &srose.srose_digis[n]))
1101 return -EISCONN;
1102 }
1103 if (srose.srose_family != AF_ROSE)
1104 return -EINVAL;
1105 } else {
1106 if (sk->sk_state != TCP_ESTABLISHED)
1107 return -ENOTCONN;
1108
1109 srose.srose_family = AF_ROSE;
1110 srose.srose_addr = rose->dest_addr;
1111 srose.srose_call = rose->dest_call;
1112 srose.srose_ndigis = rose->dest_ndigis;
1113 for (n = 0 ; n < rose->dest_ndigis ; n++)
1114 srose.srose_digis[n] = rose->dest_digis[n];
1115 }
1116
1117 SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n");
1118
1119 /* Build a packet */
1120 SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n");
1121 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1122
1123 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1124 return err;
1125
1126 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1127
1128 /*
1129 * Put the data on the end
1130 */
1131 SOCK_DEBUG(sk, "ROSE: Appending user data\n");
1132
eeeb0374
ACM		 1133 skb_reset_transport_header(skb);
1134 skb_put(skb, len);
1da177e4 1135
eeeb0374 1136 err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1da177e4
LT		 1137 if (err) {
1138 kfree_skb(skb);
1139 return err;
1140 }
1141
1142 /*
1143 * If the Q BIT Include socket option is in force, the first
1144 * byte of the user data is the logical value of the Q Bit.
1145 */
1146 if (rose->qbitincl) {
1147 qbit = skb->data[0];
1148 skb_pull(skb, 1);
1149 }
1150
1151 /*
1152 * Push down the ROSE header
1153 */
1154 asmptr = skb_push(skb, ROSE_MIN_LEN);
1155
1156 SOCK_DEBUG(sk, "ROSE: Building Network Header.\n");
1157
1158 /* Build a ROSE Network header */
1159 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1160 asmptr[1] = (rose->lci >> 0) & 0xFF;
1161 asmptr[2] = ROSE_DATA;
1162
1163 if (qbit)
1164 asmptr[0] |= ROSE_Q_BIT;
1165
1166 SOCK_DEBUG(sk, "ROSE: Built header.\n");
1167
1168 SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n");
1169
1170 if (sk->sk_state != TCP_ESTABLISHED) {
1171 kfree_skb(skb);
1172 return -ENOTCONN;
1173 }
1174
1175#ifdef M_BIT
1176#define ROSE_PACLEN (256-ROSE_MIN_LEN)
1177 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1178 unsigned char header[ROSE_MIN_LEN];
1179 struct sk_buff *skbn;
1180 int frontlen;
1181 int lg;
1182
1183 /* Save a copy of the Header */
d626f62b 1184 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
1da177e4
LT		 1185 skb_pull(skb, ROSE_MIN_LEN);
1186
1187 frontlen = skb_headroom(skb);
1188
1189 while (skb->len > 0) {
1190 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1191 kfree_skb(skb);
1192 return err;
1193 }
1194
1195 skbn->sk = sk;
1196 skbn->free = 1;
1197 skbn->arp = 1;
1198
1199 skb_reserve(skbn, frontlen);
1200
1201 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1202
1203 /* Copy the user data */
d626f62b 1204 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
1da177e4
LT		 1205 skb_pull(skb, lg);
1206
1207 /* Duplicate the Header */
1208 skb_push(skbn, ROSE_MIN_LEN);
27d7ff46 1209 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
1da177e4
LT		 1210
1211 if (skb->len > 0)
1212 skbn->data[2] |= M_BIT;
1213
1214 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1215 }
1216
1217 skb->free = 1;
1218 kfree_skb(skb);
1219 } else {
1220 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1221 }
1222#else
1223 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1224#endif
1225
1226 rose_kick(sk);
1227
1228 return len;
1229}
1230
1231
1232static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1233 struct msghdr *msg, size_t size, int flags)
1234{
1235 struct sock *sk = sock->sk;
1236 struct rose_sock *rose = rose_sk(sk);
1237 struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
1238 size_t copied;
1239 unsigned char *asmptr;
1240 struct sk_buff *skb;
1241 int n, er, qbit;
1242
1243 /*
1244 * This works for seqpacket too. The receiver has ordered the queue for
1245 * us! We do one quick check first though
1246 */
1247 if (sk->sk_state != TCP_ESTABLISHED)
1248 return -ENOTCONN;
1249
1250 /* Now we can treat all alike */
1251 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1252 return er;
1253
1254 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1255
1256 skb_pull(skb, ROSE_MIN_LEN);
1257
1258 if (rose->qbitincl) {
1259 asmptr = skb_push(skb, 1);
1260 *asmptr = qbit;
1261 }
1262
badff6d0 1263 skb_reset_transport_header(skb);
1da177e4
LT		 1264 copied = skb->len;
1265
1266 if (copied > size) {
1267 copied = size;
1268 msg->msg_flags |= MSG_TRUNC;
1269 }
1270
1271 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1272
1273 if (srose != NULL) {
1274 srose->srose_family = AF_ROSE;
1275 srose->srose_addr = rose->dest_addr;
1276 srose->srose_call = rose->dest_call;
1277 srose->srose_ndigis = rose->dest_ndigis;
1278 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
1279 struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
1280 for (n = 0 ; n < rose->dest_ndigis ; n++)
1281 full_srose->srose_digis[n] = rose->dest_digis[n];
1282 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1283 } else {
1284 if (rose->dest_ndigis >= 1) {
1285 srose->srose_ndigis = 1;
1286 srose->srose_digi = rose->dest_digis[0];
1287 }
1288 msg->msg_namelen = sizeof(struct sockaddr_rose);
1289 }
1290 }
1291
1292 skb_free_datagram(sk, skb);
1293
1294 return copied;
1295}
1296
1297
1298static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1299{
1300 struct sock *sk = sock->sk;
1301 struct rose_sock *rose = rose_sk(sk);
1302 void __user *argp = (void __user *)arg;
1303
1304 switch (cmd) {
1305 case TIOCOUTQ: {
1306 long amount;
1307 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
1308 if (amount < 0)
1309 amount = 0;
20b7d10a 1310 return put_user(amount, (unsigned int __user *) argp);
1da177e4
LT		 1311 }
1312
1313 case TIOCINQ: {
1314 struct sk_buff *skb;
1315 long amount = 0L;
1316 /* These two are safe on a single CPU system as only user tasks fiddle here */
1317 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1318 amount = skb->len;
20b7d10a 1319 return put_user(amount, (unsigned int __user *) argp);
1da177e4
LT		 1320 }
1321
1322 case SIOCGSTAMP:
20b7d10a 1323 return sock_get_timestamp(sk, (struct timeval __user *) argp);
1da177e4 1324
ae40eb1e
ED		 1325 case SIOCGSTAMPNS:
1326 return sock_get_timestampns(sk, (struct timespec __user *) argp);
1327
1da177e4
LT		 1328 case SIOCGIFADDR:
1329 case SIOCSIFADDR:
1330 case SIOCGIFDSTADDR:
1331 case SIOCSIFDSTADDR:
1332 case SIOCGIFBRDADDR:
1333 case SIOCSIFBRDADDR:
1334 case SIOCGIFNETMASK:
1335 case SIOCSIFNETMASK:
1336 case SIOCGIFMETRIC:
1337 case SIOCSIFMETRIC:
1338 return -EINVAL;
1339
1340 case SIOCADDRT:
1341 case SIOCDELRT:
1342 case SIOCRSCLRRT:
1343 if (!capable(CAP_NET_ADMIN))
1344 return -EPERM;
1345 return rose_rt_ioctl(cmd, argp);
1346
1347 case SIOCRSGCAUSE: {
1348 struct rose_cause_struct rose_cause;
1349 rose_cause.cause = rose->cause;
1350 rose_cause.diagnostic = rose->diagnostic;
1351 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1352 }
1353
1354 case SIOCRSSCAUSE: {
1355 struct rose_cause_struct rose_cause;
1356 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1357 return -EFAULT;
1358 rose->cause = rose_cause.cause;
1359 rose->diagnostic = rose_cause.diagnostic;
1360 return 0;
1361 }
1362
1363 case SIOCRSSL2CALL:
1364 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1365 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1366 ax25_listen_release(&rose_callsign, NULL);
1367 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1368 return -EFAULT;
1369 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
81dcd169
RB		 1370 return ax25_listen_register(&rose_callsign, NULL);
1371
1da177e4
LT		 1372 return 0;
1373
1374 case SIOCRSGL2CALL:
1375 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1376
1377 case SIOCRSACCEPT:
1378 if (rose->state == ROSE_STATE_5) {
1379 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1380 rose_start_idletimer(sk);
1381 rose->condition = 0x00;
1382 rose->vs = 0;
1383 rose->va = 0;
1384 rose->vr = 0;
1385 rose->vl = 0;
1386 rose->state = ROSE_STATE_3;
1387 }
1388 return 0;
1389
1390 default:
b5e5fa5e 1391 return -ENOIOCTLCMD;
1da177e4
LT		 1392 }
1393
1394 return 0;
1395}
1396
1397#ifdef CONFIG_PROC_FS
1398static void *rose_info_start(struct seq_file *seq, loff_t *pos)
95b7d924 1399 __acquires(rose_list_lock)
1da177e4
LT		 1400{
1401 int i;
1402 struct sock *s;
1403 struct hlist_node *node;
1404
1405 spin_lock_bh(&rose_list_lock);
1406 if (*pos == 0)
1407 return SEQ_START_TOKEN;
3dcf7c5e 1408
1da177e4
LT		 1409 i = 1;
1410 sk_for_each(s, node, &rose_list) {
1411 if (i == *pos)
1412 return s;
1413 ++i;
1414 }
1415 return NULL;
1416}
1417
1418static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1419{
1420 ++*pos;
1421
3dcf7c5e 1422 return (v == SEQ_START_TOKEN) ? sk_head(&rose_list)
1da177e4
LT		 1423 : sk_next((struct sock *)v);
1424}
3dcf7c5e 1425
1da177e4 1426static void rose_info_stop(struct seq_file *seq, void *v)
95b7d924 1427 __releases(rose_list_lock)
1da177e4
LT		 1428{
1429 spin_unlock_bh(&rose_list_lock);
1430}
1431
1432static int rose_info_show(struct seq_file *seq, void *v)
1433{
f75268cd
RB		 1434 char buf[11];
1435
1da177e4 1436 if (v == SEQ_START_TOKEN)
3dcf7c5e 1437 seq_puts(seq,
1da177e4
LT		 1438 "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");
1439
1440 else {
1441 struct sock *s = v;
1442 struct rose_sock *rose = rose_sk(s);
1443 const char *devname, *callsign;
1444 const struct net_device *dev = rose->device;
1445
1446 if (!dev)
1447 devname = "???";
1448 else
1449 devname = dev->name;
3dcf7c5e 1450
1da177e4
LT		 1451 seq_printf(seq, "%-10s %-9s ",
1452 rose2asc(&rose->dest_addr),
f75268cd 1453 ax2asc(buf, &rose->dest_call));
1da177e4
LT		 1454
1455 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1456 callsign = "??????-?";
1457 else
f75268cd 1458 callsign = ax2asc(buf, &rose->source_call);
1da177e4
LT		 1459
1460 seq_printf(seq,
1461 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
1462 rose2asc(&rose->source_addr),
1463 callsign,
1464 devname,
1465 rose->lci & 0x0FFF,
1466 (rose->neighbour) ? rose->neighbour->number : 0,
1467 rose->state,
1468 rose->vs,
1469 rose->vr,
1470 rose->va,
1471 ax25_display_timer(&rose->timer) / HZ,
1472 rose->t1 / HZ,
1473 rose->t2 / HZ,
1474 rose->t3 / HZ,
1475 rose->hb / HZ,
1476 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1477 rose->idle / (60 * HZ),
1478 atomic_read(&s->sk_wmem_alloc),
1479 atomic_read(&s->sk_rmem_alloc),
1480 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1481 }
1482
1483 return 0;
1484}
1485
56b3d975 1486static const struct seq_operations rose_info_seqops = {
1da177e4
LT		 1487 .start = rose_info_start,
1488 .next = rose_info_next,
1489 .stop = rose_info_stop,
1490 .show = rose_info_show,
1491};
1492
1493static int rose_info_open(struct inode *inode, struct file *file)
1494{
1495 return seq_open(file, &rose_info_seqops);
1496}
1497
da7071d7 1498static const struct file_operations rose_info_fops = {
1da177e4
LT		 1499 .owner = THIS_MODULE,
1500 .open = rose_info_open,
1501 .read = seq_read,
1502 .llseek = seq_lseek,
1503 .release = seq_release,
1504};
1505#endif /* CONFIG_PROC_FS */
1506
1507static struct net_proto_family rose_family_ops = {
1508 .family = PF_ROSE,
1509 .create = rose_create,
1510 .owner = THIS_MODULE,
1511};
1512
1513static struct proto_ops rose_proto_ops = {
1514 .family = PF_ROSE,
1515 .owner = THIS_MODULE,
1516 .release = rose_release,
1517 .bind = rose_bind,
1518 .connect = rose_connect,
1519 .socketpair = sock_no_socketpair,
1520 .accept = rose_accept,
1521 .getname = rose_getname,
1522 .poll = datagram_poll,
1523 .ioctl = rose_ioctl,
1524 .listen = rose_listen,
1525 .shutdown = sock_no_shutdown,
1526 .setsockopt = rose_setsockopt,
1527 .getsockopt = rose_getsockopt,
1528 .sendmsg = rose_sendmsg,
1529 .recvmsg = rose_recvmsg,
1530 .mmap = sock_no_mmap,
1531 .sendpage = sock_no_sendpage,
1532};
1533
1534static struct notifier_block rose_dev_notifier = {
1535 .notifier_call = rose_device_event,
1536};
1537
1538static struct net_device **dev_rose;
1539
8d5cf596
RB		 1540static struct ax25_protocol rose_pid = {
1541 .pid = AX25_P_ROSE,
1542 .func = rose_route_frame
1543};
1544
a4282717
RB		 1545static struct ax25_linkfail rose_linkfail_notifier = {
1546 .func = rose_link_failed
1547};
1548
1da177e4
LT		 1549static int __init rose_proto_init(void)
1550{
1551 int i;
a83cd2cc 1552 int rc;
1da177e4 1553
a83cd2cc
AD		 1554 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1555 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1556 rc = -EINVAL;
1557 goto out;
1558 }
1559
1560 rc = proto_register(&rose_proto, 0);
1da177e4
LT		 1561 if (rc != 0)
1562 goto out;
1563
1564 rose_callsign = null_ax25_address;
1565
1b30dd35 1566 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
1da177e4
LT		 1567 if (dev_rose == NULL) {
1568 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
a83cd2cc
AD		 1569 rc = -ENOMEM;
1570 goto out_proto_unregister;
1da177e4
LT		 1571 }
1572
1da177e4
LT		 1573 for (i = 0; i < rose_ndevs; i++) {
1574 struct net_device *dev;
1575 char name[IFNAMSIZ];
1576
1577 sprintf(name, "rose%d", i);
3dcf7c5e 1578 dev = alloc_netdev(sizeof(struct net_device_stats),
1da177e4
LT		 1579 name, rose_setup);
1580 if (!dev) {
1581 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
70ff3b66 1582 rc = -ENOMEM;
1da177e4
LT		 1583 goto fail;
1584 }
70ff3b66
AD		 1585 rc = register_netdev(dev);
1586 if (rc) {
520d1b83 1587 printk(KERN_ERR "ROSE: netdevice registration failed\n");
1da177e4
LT		 1588 free_netdev(dev);
1589 goto fail;
1590 }
c773e847 1591 rose_set_lockdep_key(dev);
1da177e4
LT		 1592 dev_rose[i] = dev;
1593 }
1594
1595 sock_register(&rose_family_ops);
1596 register_netdevice_notifier(&rose_dev_notifier);
1da177e4 1597
8d5cf596 1598 ax25_register_pid(&rose_pid);
a4282717 1599 ax25_linkfail_register(&rose_linkfail_notifier);
1da177e4
LT		 1600
1601#ifdef CONFIG_SYSCTL
1602 rose_register_sysctl();
1603#endif
1604 rose_loopback_init();
1605
1606 rose_add_loopback_neigh();
1607
457c4cbc
EB		 1608 proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops);
1609 proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops);
1610 proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops);
1611 proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops);
1da177e4
LT		 1612out:
1613 return rc;
1614fail:
1615 while (--i >= 0) {
1616 unregister_netdev(dev_rose[i]);
1617 free_netdev(dev_rose[i]);
1618 }
1619 kfree(dev_rose);
a83cd2cc 1620out_proto_unregister:
1da177e4 1621 proto_unregister(&rose_proto);
70ff3b66 1622 goto out;
1da177e4
LT		 1623}
1624module_init(rose_proto_init);
1625
1626module_param(rose_ndevs, int, 0);
1627MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1628
1629MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1630MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1631MODULE_LICENSE("GPL");
1632MODULE_ALIAS_NETPROTO(PF_ROSE);
1633
1634static void __exit rose_exit(void)
1635{
1636 int i;
1637
457c4cbc
EB		 1638 proc_net_remove(&init_net, "rose");
1639 proc_net_remove(&init_net, "rose_neigh");
1640 proc_net_remove(&init_net, "rose_nodes");
1641 proc_net_remove(&init_net, "rose_routes");
1da177e4
LT		 1642 rose_loopback_clear();
1643
1644 rose_rt_free();
1645
1646 ax25_protocol_release(AX25_P_ROSE);
a4282717 1647 ax25_linkfail_release(&rose_linkfail_notifier);
1da177e4
LT		 1648
1649 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1650 ax25_listen_release(&rose_callsign, NULL);
1651
1652#ifdef CONFIG_SYSCTL
1653 rose_unregister_sysctl();
1654#endif
1655 unregister_netdevice_notifier(&rose_dev_notifier);
1656
1657 sock_unregister(PF_ROSE);
1658
1659 for (i = 0; i < rose_ndevs; i++) {
1660 struct net_device *dev = dev_rose[i];
1661
1662 if (dev) {
1663 unregister_netdev(dev);
1664 free_netdev(dev);
1665 }
1666 }
1667
1668 kfree(dev_rose);
1669 proto_unregister(&rose_proto);
1670}
1671
1672module_exit(rose_exit);
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