[AX25]: UID fixes
[linux-2.6.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 #include <linux/config.h>
13 #include <linux/module.h>
14 #include <linux/moduleparam.h>
15 #include <linux/init.h>
16 #include <linux/errno.h>
17 #include <linux/types.h>
18 #include <linux/socket.h>
19 #include <linux/in.h>
20 #include <linux/kernel.h>
21 #include <linux/sched.h>
22 #include <linux/spinlock.h>
23 #include <linux/timer.h>
24 #include <linux/string.h>
25 #include <linux/sockios.h>
26 #include <linux/net.h>
27 #include <linux/stat.h>
28 #include <net/ax25.h>
29 #include <linux/inet.h>
30 #include <linux/netdevice.h>
31 #include <linux/if_arp.h>
32 #include <linux/skbuff.h>
33 #include <net/sock.h>
34 #include <asm/system.h>
35 #include <asm/uaccess.h>
36 #include <linux/fcntl.h>
37 #include <linux/termios.h>
38 #include <linux/mm.h>
39 #include <linux/interrupt.h>
40 #include <linux/notifier.h>
41 #include <net/rose.h>
42 #include <linux/proc_fs.h>
43 #include <linux/seq_file.h>
44 #include <net/tcp.h>
45 #include <net/ip.h>
46 #include <net/arp.h>
47
48 static int rose_ndevs = 10;
49
50 int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
51 int sysctl_rose_call_request_timeout    = ROSE_DEFAULT_T1;
52 int sysctl_rose_reset_request_timeout   = ROSE_DEFAULT_T2;
53 int sysctl_rose_clear_request_timeout   = ROSE_DEFAULT_T3;
54 int sysctl_rose_no_activity_timeout     = ROSE_DEFAULT_IDLE;
55 int sysctl_rose_ack_hold_back_timeout   = ROSE_DEFAULT_HB;
56 int sysctl_rose_routing_control         = ROSE_DEFAULT_ROUTING;
57 int sysctl_rose_link_fail_timeout       = ROSE_DEFAULT_FAIL_TIMEOUT;
58 int sysctl_rose_maximum_vcs             = ROSE_DEFAULT_MAXVC;
59 int sysctl_rose_window_size             = ROSE_DEFAULT_WINDOW_SIZE;
60
61 static HLIST_HEAD(rose_list);
62 static DEFINE_SPINLOCK(rose_list_lock);
63
64 static struct proto_ops rose_proto_ops;
65
66 ax25_address rose_callsign;
67
68 /*
69  *      Convert a ROSE address into text.
70  */
71 const char *rose2asc(const rose_address *addr)
72 {
73         static char buffer[11];
74
75         if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
76             addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
77             addr->rose_addr[4] == 0x00) {
78                 strcpy(buffer, "*");
79         } else {
80                 sprintf(buffer, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
81                                                 addr->rose_addr[1] & 0xFF,
82                                                 addr->rose_addr[2] & 0xFF,
83                                                 addr->rose_addr[3] & 0xFF,
84                                                 addr->rose_addr[4] & 0xFF);
85         }
86
87         return buffer;
88 }
89
90 /*
91  *      Compare two ROSE addresses, 0 == equal.
92  */
93 int rosecmp(rose_address *addr1, rose_address *addr2)
94 {
95         int i;
96
97         for (i = 0; i < 5; i++)
98                 if (addr1->rose_addr[i] != addr2->rose_addr[i])
99                         return 1;
100
101         return 0;
102 }
103
104 /*
105  *      Compare two ROSE addresses for only mask digits, 0 == equal.
106  */
107 int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
108 {
109         int i, j;
110
111         if (mask > 10)
112                 return 1;
113
114         for (i = 0; i < mask; i++) {
115                 j = i / 2;
116
117                 if ((i % 2) != 0) {
118                         if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F))
119                                 return 1;
120                 } else {
121                         if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0))
122                                 return 1;
123                 }
124         }
125
126         return 0;
127 }
128
129 /*
130  *      Socket removal during an interrupt is now safe.
131  */
132 static void rose_remove_socket(struct sock *sk)
133 {
134         spin_lock_bh(&rose_list_lock);
135         sk_del_node_init(sk);
136         spin_unlock_bh(&rose_list_lock);
137 }
138
139 /*
140  *      Kill all bound sockets on a broken link layer connection to a
141  *      particular neighbour.
142  */
143 void rose_kill_by_neigh(struct rose_neigh *neigh)
144 {
145         struct sock *s;
146         struct hlist_node *node;
147
148         spin_lock_bh(&rose_list_lock);
149         sk_for_each(s, node, &rose_list) {
150                 struct rose_sock *rose = rose_sk(s);
151
152                 if (rose->neighbour == neigh) {
153                         rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
154                         rose->neighbour->use--;
155                         rose->neighbour = NULL;
156                 }
157         }
158         spin_unlock_bh(&rose_list_lock);
159 }
160
161 /*
162  *      Kill all bound sockets on a dropped device.
163  */
164 static void rose_kill_by_device(struct net_device *dev)
165 {
166         struct sock *s;
167         struct hlist_node *node;
168
169         spin_lock_bh(&rose_list_lock);
170         sk_for_each(s, node, &rose_list) {
171                 struct rose_sock *rose = rose_sk(s);
172
173                 if (rose->device == dev) {
174                         rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
175                         rose->neighbour->use--;
176                         rose->device = NULL;
177                 }
178         }
179         spin_unlock_bh(&rose_list_lock);
180 }
181
182 /*
183  *      Handle device status changes.
184  */
185 static int rose_device_event(struct notifier_block *this, unsigned long event,
186         void *ptr)
187 {
188         struct net_device *dev = (struct net_device *)ptr;
189
190         if (event != NETDEV_DOWN)
191                 return NOTIFY_DONE;
192
193         switch (dev->type) {
194         case ARPHRD_ROSE:
195                 rose_kill_by_device(dev);
196                 break;
197         case ARPHRD_AX25:
198                 rose_link_device_down(dev);
199                 rose_rt_device_down(dev);
200                 break;
201         }
202
203         return NOTIFY_DONE;
204 }
205
206 /*
207  *      Add a socket to the bound sockets list.
208  */
209 static void rose_insert_socket(struct sock *sk)
210 {
211
212         spin_lock_bh(&rose_list_lock);
213         sk_add_node(sk, &rose_list);
214         spin_unlock_bh(&rose_list_lock);
215 }
216
217 /*
218  *      Find a socket that wants to accept the Call Request we just
219  *      received.
220  */
221 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
222 {
223         struct sock *s;
224         struct hlist_node *node;
225
226         spin_lock_bh(&rose_list_lock);
227         sk_for_each(s, node, &rose_list) {
228                 struct rose_sock *rose = rose_sk(s);
229
230                 if (!rosecmp(&rose->source_addr, addr) &&
231                     !ax25cmp(&rose->source_call, call) &&
232                     !rose->source_ndigis && s->sk_state == TCP_LISTEN)
233                         goto found;
234         }
235
236         sk_for_each(s, node, &rose_list) {
237                 struct rose_sock *rose = rose_sk(s);
238
239                 if (!rosecmp(&rose->source_addr, addr) &&
240                     !ax25cmp(&rose->source_call, &null_ax25_address) &&
241                     s->sk_state == TCP_LISTEN)
242                         goto found;
243         }
244         s = NULL;
245 found:
246         spin_unlock_bh(&rose_list_lock);
247         return s;
248 }
249
250 /*
251  *      Find a connected ROSE socket given my LCI and device.
252  */
253 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
254 {
255         struct sock *s;
256         struct hlist_node *node;
257
258         spin_lock_bh(&rose_list_lock);
259         sk_for_each(s, node, &rose_list) {
260                 struct rose_sock *rose = rose_sk(s);
261
262                 if (rose->lci == lci && rose->neighbour == neigh)
263                         goto found;
264         }
265         s = NULL;
266 found:
267         spin_unlock_bh(&rose_list_lock);
268         return s;
269 }
270
271 /*
272  *      Find a unique LCI for a given device.
273  */
274 unsigned int rose_new_lci(struct rose_neigh *neigh)
275 {
276         int lci;
277
278         if (neigh->dce_mode) {
279                 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
280                         if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
281                                 return lci;
282         } else {
283                 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
284                         if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
285                                 return lci;
286         }
287
288         return 0;
289 }
290
291 /*
292  *      Deferred destroy.
293  */
294 void rose_destroy_socket(struct sock *);
295
296 /*
297  *      Handler for deferred kills.
298  */
299 static void rose_destroy_timer(unsigned long data)
300 {
301         rose_destroy_socket((struct sock *)data);
302 }
303
304 /*
305  *      This is called from user mode and the timers. Thus it protects itself
306  *      against interrupt users but doesn't worry about being called during
307  *      work.  Once it is removed from the queue no interrupt or bottom half
308  *      will touch it and we are (fairly 8-) ) safe.
309  */
310 void rose_destroy_socket(struct sock *sk)
311 {
312         struct sk_buff *skb;
313
314         rose_remove_socket(sk);
315         rose_stop_heartbeat(sk);
316         rose_stop_idletimer(sk);
317         rose_stop_timer(sk);
318
319         rose_clear_queues(sk);          /* Flush the queues */
320
321         while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
322                 if (skb->sk != sk) {    /* A pending connection */
323                         /* Queue the unaccepted socket for death */
324                         sock_set_flag(skb->sk, SOCK_DEAD);
325                         rose_start_heartbeat(skb->sk);
326                         rose_sk(skb->sk)->state = ROSE_STATE_0;
327                 }
328
329                 kfree_skb(skb);
330         }
331
332         if (atomic_read(&sk->sk_wmem_alloc) ||
333             atomic_read(&sk->sk_rmem_alloc)) {
334                 /* Defer: outstanding buffers */
335                 init_timer(&sk->sk_timer);
336                 sk->sk_timer.expires  = jiffies + 10 * HZ;
337                 sk->sk_timer.function = rose_destroy_timer;
338                 sk->sk_timer.data     = (unsigned long)sk;
339                 add_timer(&sk->sk_timer);
340         } else
341                 sock_put(sk);
342 }
343
344 /*
345  *      Handling for system calls applied via the various interfaces to a
346  *      ROSE socket object.
347  */
348
349 static int rose_setsockopt(struct socket *sock, int level, int optname,
350         char __user *optval, int optlen)
351 {
352         struct sock *sk = sock->sk;
353         struct rose_sock *rose = rose_sk(sk);
354         int opt;
355
356         if (level != SOL_ROSE)
357                 return -ENOPROTOOPT;
358
359         if (optlen < sizeof(int))
360                 return -EINVAL;
361
362         if (get_user(opt, (int __user *)optval))
363                 return -EFAULT;
364
365         switch (optname) {
366         case ROSE_DEFER:
367                 rose->defer = opt ? 1 : 0;
368                 return 0;
369
370         case ROSE_T1:
371                 if (opt < 1)
372                         return -EINVAL;
373                 rose->t1 = opt * HZ;
374                 return 0;
375
376         case ROSE_T2:
377                 if (opt < 1)
378                         return -EINVAL;
379                 rose->t2 = opt * HZ;
380                 return 0;
381
382         case ROSE_T3:
383                 if (opt < 1)
384                         return -EINVAL;
385                 rose->t3 = opt * HZ;
386                 return 0;
387
388         case ROSE_HOLDBACK:
389                 if (opt < 1)
390                         return -EINVAL;
391                 rose->hb = opt * HZ;
392                 return 0;
393
394         case ROSE_IDLE:
395                 if (opt < 0)
396                         return -EINVAL;
397                 rose->idle = opt * 60 * HZ;
398                 return 0;
399
400         case ROSE_QBITINCL:
401                 rose->qbitincl = opt ? 1 : 0;
402                 return 0;
403
404         default:
405                 return -ENOPROTOOPT;
406         }
407 }
408
409 static int rose_getsockopt(struct socket *sock, int level, int optname,
410         char __user *optval, int __user *optlen)
411 {
412         struct sock *sk = sock->sk;
413         struct rose_sock *rose = rose_sk(sk);
414         int val = 0;
415         int len;
416
417         if (level != SOL_ROSE)
418                 return -ENOPROTOOPT;
419
420         if (get_user(len, optlen))
421                 return -EFAULT;
422
423         if (len < 0)
424                 return -EINVAL;
425
426         switch (optname) {
427         case ROSE_DEFER:
428                 val = rose->defer;
429                 break;
430
431         case ROSE_T1:
432                 val = rose->t1 / HZ;
433                 break;
434
435         case ROSE_T2:
436                 val = rose->t2 / HZ;
437                 break;
438
439         case ROSE_T3:
440                 val = rose->t3 / HZ;
441                 break;
442
443         case ROSE_HOLDBACK:
444                 val = rose->hb / HZ;
445                 break;
446
447         case ROSE_IDLE:
448                 val = rose->idle / (60 * HZ);
449                 break;
450
451         case ROSE_QBITINCL:
452                 val = rose->qbitincl;
453                 break;
454
455         default:
456                 return -ENOPROTOOPT;
457         }
458
459         len = min_t(unsigned int, len, sizeof(int));
460
461         if (put_user(len, optlen))
462                 return -EFAULT;
463
464         return copy_to_user(optval, &val, len) ? -EFAULT : 0;
465 }
466
467 static int rose_listen(struct socket *sock, int backlog)
468 {
469         struct sock *sk = sock->sk;
470
471         if (sk->sk_state != TCP_LISTEN) {
472                 struct rose_sock *rose = rose_sk(sk);
473
474                 rose->dest_ndigis = 0;
475                 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
476                 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
477                 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
478                 sk->sk_max_ack_backlog = backlog;
479                 sk->sk_state           = TCP_LISTEN;
480                 return 0;
481         }
482
483         return -EOPNOTSUPP;
484 }
485
486 static struct proto rose_proto = {
487         .name     = "ROSE",
488         .owner    = THIS_MODULE,
489         .obj_size = sizeof(struct rose_sock),
490 };
491
492 static int rose_create(struct socket *sock, int protocol)
493 {
494         struct sock *sk;
495         struct rose_sock *rose;
496
497         if (sock->type != SOCK_SEQPACKET || protocol != 0)
498                 return -ESOCKTNOSUPPORT;
499
500         if ((sk = sk_alloc(PF_ROSE, GFP_ATOMIC, &rose_proto, 1)) == NULL)
501                 return -ENOMEM;
502
503         rose = rose_sk(sk);
504
505         sock_init_data(sock, sk);
506
507         skb_queue_head_init(&rose->ack_queue);
508 #ifdef M_BIT
509         skb_queue_head_init(&rose->frag_queue);
510         rose->fraglen    = 0;
511 #endif
512
513         sock->ops    = &rose_proto_ops;
514         sk->sk_protocol = protocol;
515
516         init_timer(&rose->timer);
517         init_timer(&rose->idletimer);
518
519         rose->t1   = sysctl_rose_call_request_timeout;
520         rose->t2   = sysctl_rose_reset_request_timeout;
521         rose->t3   = sysctl_rose_clear_request_timeout;
522         rose->hb   = sysctl_rose_ack_hold_back_timeout;
523         rose->idle = sysctl_rose_no_activity_timeout;
524
525         rose->state = ROSE_STATE_0;
526
527         return 0;
528 }
529
530 static struct sock *rose_make_new(struct sock *osk)
531 {
532         struct sock *sk;
533         struct rose_sock *rose, *orose;
534
535         if (osk->sk_type != SOCK_SEQPACKET)
536                 return NULL;
537
538         if ((sk = sk_alloc(PF_ROSE, GFP_ATOMIC, &rose_proto, 1)) == NULL)
539                 return NULL;
540
541         rose = rose_sk(sk);
542
543         sock_init_data(NULL, sk);
544
545         skb_queue_head_init(&rose->ack_queue);
546 #ifdef M_BIT
547         skb_queue_head_init(&rose->frag_queue);
548         rose->fraglen  = 0;
549 #endif
550
551         sk->sk_type     = osk->sk_type;
552         sk->sk_socket   = osk->sk_socket;
553         sk->sk_priority = osk->sk_priority;
554         sk->sk_protocol = osk->sk_protocol;
555         sk->sk_rcvbuf   = osk->sk_rcvbuf;
556         sk->sk_sndbuf   = osk->sk_sndbuf;
557         sk->sk_state    = TCP_ESTABLISHED;
558         sk->sk_sleep    = osk->sk_sleep;
559         sock_copy_flags(sk, osk);
560
561         init_timer(&rose->timer);
562         init_timer(&rose->idletimer);
563
564         orose           = rose_sk(osk);
565         rose->t1        = orose->t1;
566         rose->t2        = orose->t2;
567         rose->t3        = orose->t3;
568         rose->hb        = orose->hb;
569         rose->idle      = orose->idle;
570         rose->defer     = orose->defer;
571         rose->device    = orose->device;
572         rose->qbitincl  = orose->qbitincl;
573
574         return sk;
575 }
576
577 static int rose_release(struct socket *sock)
578 {
579         struct sock *sk = sock->sk;
580         struct rose_sock *rose;
581
582         if (sk == NULL) return 0;
583
584         rose = rose_sk(sk);
585
586         switch (rose->state) {
587         case ROSE_STATE_0:
588                 rose_disconnect(sk, 0, -1, -1);
589                 rose_destroy_socket(sk);
590                 break;
591
592         case ROSE_STATE_2:
593                 rose->neighbour->use--;
594                 rose_disconnect(sk, 0, -1, -1);
595                 rose_destroy_socket(sk);
596                 break;
597
598         case ROSE_STATE_1:
599         case ROSE_STATE_3:
600         case ROSE_STATE_4:
601         case ROSE_STATE_5:
602                 rose_clear_queues(sk);
603                 rose_stop_idletimer(sk);
604                 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
605                 rose_start_t3timer(sk);
606                 rose->state  = ROSE_STATE_2;
607                 sk->sk_state    = TCP_CLOSE;
608                 sk->sk_shutdown |= SEND_SHUTDOWN;
609                 sk->sk_state_change(sk);
610                 sock_set_flag(sk, SOCK_DEAD);
611                 sock_set_flag(sk, SOCK_DESTROY);
612                 break;
613
614         default:
615                 break;
616         }
617
618         sock->sk = NULL;
619
620         return 0;
621 }
622
623 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
624 {
625         struct sock *sk = sock->sk;
626         struct rose_sock *rose = rose_sk(sk);
627         struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
628         struct net_device *dev;
629         ax25_address *source;
630         ax25_uid_assoc *user;
631         int n;
632
633         if (!sock_flag(sk, SOCK_ZAPPED))
634                 return -EINVAL;
635
636         if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
637                 return -EINVAL;
638
639         if (addr->srose_family != AF_ROSE)
640                 return -EINVAL;
641
642         if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
643                 return -EINVAL;
644
645         if (addr->srose_ndigis > ROSE_MAX_DIGIS)
646                 return -EINVAL;
647
648         if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) {
649                 SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n");
650                 return -EADDRNOTAVAIL;
651         }
652
653         source = &addr->srose_call;
654
655         user = ax25_findbyuid(current->euid);
656         if (user) {
657                 rose->source_call = user->call;
658                 ax25_uid_put(user);
659         } else {
660                 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
661                         return -EACCES;
662                 rose->source_call   = *source;
663         }
664
665         rose->source_addr   = addr->srose_addr;
666         rose->device        = dev;
667         rose->source_ndigis = addr->srose_ndigis;
668
669         if (addr_len == sizeof(struct full_sockaddr_rose)) {
670                 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
671                 for (n = 0 ; n < addr->srose_ndigis ; n++)
672                         rose->source_digis[n] = full_addr->srose_digis[n];
673         } else {
674                 if (rose->source_ndigis == 1) {
675                         rose->source_digis[0] = addr->srose_digi;
676                 }
677         }
678
679         rose_insert_socket(sk);
680
681         sock_reset_flag(sk, SOCK_ZAPPED);
682         SOCK_DEBUG(sk, "ROSE: socket is bound\n");
683         return 0;
684 }
685
686 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
687 {
688         struct sock *sk = sock->sk;
689         struct rose_sock *rose = rose_sk(sk);
690         struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
691         unsigned char cause, diagnostic;
692         struct net_device *dev;
693         ax25_uid_assoc *user;
694         int n;
695
696         if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
697                 sock->state = SS_CONNECTED;
698                 return 0;       /* Connect completed during a ERESTARTSYS event */
699         }
700
701         if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
702                 sock->state = SS_UNCONNECTED;
703                 return -ECONNREFUSED;
704         }
705
706         if (sk->sk_state == TCP_ESTABLISHED)
707                 return -EISCONN;        /* No reconnect on a seqpacket socket */
708
709         sk->sk_state   = TCP_CLOSE;
710         sock->state = SS_UNCONNECTED;
711
712         if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
713                 return -EINVAL;
714
715         if (addr->srose_family != AF_ROSE)
716                 return -EINVAL;
717
718         if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
719                 return -EINVAL;
720
721         if (addr->srose_ndigis > ROSE_MAX_DIGIS)
722                 return -EINVAL;
723
724         /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
725         if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
726                 return -EINVAL;
727
728         rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
729                                          &diagnostic);
730         if (!rose->neighbour)
731                 return -ENETUNREACH;
732
733         rose->lci = rose_new_lci(rose->neighbour);
734         if (!rose->lci)
735                 return -ENETUNREACH;
736
737         if (sock_flag(sk, SOCK_ZAPPED)) {       /* Must bind first - autobinding in this may or may not work */
738                 sock_reset_flag(sk, SOCK_ZAPPED);
739
740                 if ((dev = rose_dev_first()) == NULL)
741                         return -ENETUNREACH;
742
743                 user = ax25_findbyuid(current->euid);
744                 if (!user)
745                         return -EINVAL;
746
747                 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
748                 rose->source_call = user->call;
749                 rose->device      = dev;
750                 ax25_uid_put(user);
751
752                 rose_insert_socket(sk);         /* Finish the bind */
753         }
754
755         rose->dest_addr   = addr->srose_addr;
756         rose->dest_call   = addr->srose_call;
757         rose->rand        = ((long)rose & 0xFFFF) + rose->lci;
758         rose->dest_ndigis = addr->srose_ndigis;
759
760         if (addr_len == sizeof(struct full_sockaddr_rose)) {
761                 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
762                 for (n = 0 ; n < addr->srose_ndigis ; n++)
763                         rose->dest_digis[n] = full_addr->srose_digis[n];
764         } else {
765                 if (rose->dest_ndigis == 1) {
766                         rose->dest_digis[0] = addr->srose_digi;
767                 }
768         }
769
770         /* Move to connecting socket, start sending Connect Requests */
771         sock->state   = SS_CONNECTING;
772         sk->sk_state     = TCP_SYN_SENT;
773
774         rose->state = ROSE_STATE_1;
775
776         rose->neighbour->use++;
777
778         rose_write_internal(sk, ROSE_CALL_REQUEST);
779         rose_start_heartbeat(sk);
780         rose_start_t1timer(sk);
781
782         /* Now the loop */
783         if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
784                 return -EINPROGRESS;
785
786         /*
787          * A Connect Ack with Choke or timeout or failed routing will go to
788          * closed.
789          */
790         if (sk->sk_state == TCP_SYN_SENT) {
791                 struct task_struct *tsk = current;
792                 DECLARE_WAITQUEUE(wait, tsk);
793
794                 add_wait_queue(sk->sk_sleep, &wait);
795                 for (;;) {
796                         set_current_state(TASK_INTERRUPTIBLE);
797                         if (sk->sk_state != TCP_SYN_SENT)
798                                 break;
799                         if (!signal_pending(tsk)) {
800                                 schedule();
801                                 continue;
802                         }
803                         current->state = TASK_RUNNING;
804                         remove_wait_queue(sk->sk_sleep, &wait);
805                         return -ERESTARTSYS;
806                 }
807                 current->state = TASK_RUNNING;
808                 remove_wait_queue(sk->sk_sleep, &wait);
809         }
810
811         if (sk->sk_state != TCP_ESTABLISHED) {
812                 sock->state = SS_UNCONNECTED;
813                 return sock_error(sk);  /* Always set at this point */
814         }
815
816         sock->state = SS_CONNECTED;
817
818         return 0;
819 }
820
821 static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
822 {
823         struct task_struct *tsk = current;
824         DECLARE_WAITQUEUE(wait, tsk);
825         struct sk_buff *skb;
826         struct sock *newsk;
827         struct sock *sk;
828         int err = 0;
829
830         if ((sk = sock->sk) == NULL)
831                 return -EINVAL;
832
833         lock_sock(sk);
834         if (sk->sk_type != SOCK_SEQPACKET) {
835                 err = -EOPNOTSUPP;
836                 goto out;
837         }
838
839         if (sk->sk_state != TCP_LISTEN) {
840                 err = -EINVAL;
841                 goto out;
842         }
843
844         /*
845          *      The write queue this time is holding sockets ready to use
846          *      hooked into the SABM we saved
847          */
848         add_wait_queue(sk->sk_sleep, &wait);
849         for (;;) {
850                 skb = skb_dequeue(&sk->sk_receive_queue);
851                 if (skb)
852                         break;
853
854                 current->state = TASK_INTERRUPTIBLE;
855                 release_sock(sk);
856                 if (flags & O_NONBLOCK) {
857                         current->state = TASK_RUNNING;
858                         remove_wait_queue(sk->sk_sleep, &wait);
859                         return -EWOULDBLOCK;
860                 }
861                 if (!signal_pending(tsk)) {
862                         schedule();
863                         lock_sock(sk);
864                         continue;
865                 }
866                 return -ERESTARTSYS;
867         }
868         current->state = TASK_RUNNING;
869         remove_wait_queue(sk->sk_sleep, &wait);
870
871         newsk = skb->sk;
872         newsk->sk_socket = newsock;
873         newsk->sk_sleep = &newsock->wait;
874
875         /* Now attach up the new socket */
876         skb->sk = NULL;
877         kfree_skb(skb);
878         sk->sk_ack_backlog--;
879         newsock->sk = newsk;
880
881 out:
882         release_sock(sk);
883
884         return err;
885 }
886
887 static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
888         int *uaddr_len, int peer)
889 {
890         struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
891         struct sock *sk = sock->sk;
892         struct rose_sock *rose = rose_sk(sk);
893         int n;
894
895         if (peer != 0) {
896                 if (sk->sk_state != TCP_ESTABLISHED)
897                         return -ENOTCONN;
898                 srose->srose_family = AF_ROSE;
899                 srose->srose_addr   = rose->dest_addr;
900                 srose->srose_call   = rose->dest_call;
901                 srose->srose_ndigis = rose->dest_ndigis;
902                 for (n = 0; n < rose->dest_ndigis; n++)
903                         srose->srose_digis[n] = rose->dest_digis[n];
904         } else {
905                 srose->srose_family = AF_ROSE;
906                 srose->srose_addr   = rose->source_addr;
907                 srose->srose_call   = rose->source_call;
908                 srose->srose_ndigis = rose->source_ndigis;
909                 for (n = 0; n < rose->source_ndigis; n++)
910                         srose->srose_digis[n] = rose->source_digis[n];
911         }
912
913         *uaddr_len = sizeof(struct full_sockaddr_rose);
914         return 0;
915 }
916
917 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
918 {
919         struct sock *sk;
920         struct sock *make;
921         struct rose_sock *make_rose;
922         struct rose_facilities_struct facilities;
923         int n, len;
924
925         skb->sk = NULL;         /* Initially we don't know who it's for */
926
927         /*
928          *      skb->data points to the rose frame start
929          */
930         memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
931
932         len  = (((skb->data[3] >> 4) & 0x0F) + 1) / 2;
933         len += (((skb->data[3] >> 0) & 0x0F) + 1) / 2;
934         if (!rose_parse_facilities(skb->data + len + 4, &facilities)) {
935                 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
936                 return 0;
937         }
938
939         sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
940
941         /*
942          * We can't accept the Call Request.
943          */
944         if (sk == NULL || sk_acceptq_is_full(sk) ||
945             (make = rose_make_new(sk)) == NULL) {
946                 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
947                 return 0;
948         }
949
950         skb->sk     = make;
951         make->sk_state = TCP_ESTABLISHED;
952         make_rose = rose_sk(make);
953
954         make_rose->lci           = lci;
955         make_rose->dest_addr     = facilities.dest_addr;
956         make_rose->dest_call     = facilities.dest_call;
957         make_rose->dest_ndigis   = facilities.dest_ndigis;
958         for (n = 0 ; n < facilities.dest_ndigis ; n++)
959                 make_rose->dest_digis[n] = facilities.dest_digis[n];
960         make_rose->source_addr   = facilities.source_addr;
961         make_rose->source_call   = facilities.source_call;
962         make_rose->source_ndigis = facilities.source_ndigis;
963         for (n = 0 ; n < facilities.source_ndigis ; n++)
964                 make_rose->source_digis[n]= facilities.source_digis[n];
965         make_rose->neighbour     = neigh;
966         make_rose->device        = dev;
967         make_rose->facilities    = facilities;
968
969         make_rose->neighbour->use++;
970
971         if (rose_sk(sk)->defer) {
972                 make_rose->state = ROSE_STATE_5;
973         } else {
974                 rose_write_internal(make, ROSE_CALL_ACCEPTED);
975                 make_rose->state = ROSE_STATE_3;
976                 rose_start_idletimer(make);
977         }
978
979         make_rose->condition = 0x00;
980         make_rose->vs        = 0;
981         make_rose->va        = 0;
982         make_rose->vr        = 0;
983         make_rose->vl        = 0;
984         sk->sk_ack_backlog++;
985
986         rose_insert_socket(make);
987
988         skb_queue_head(&sk->sk_receive_queue, skb);
989
990         rose_start_heartbeat(make);
991
992         if (!sock_flag(sk, SOCK_DEAD))
993                 sk->sk_data_ready(sk, skb->len);
994
995         return 1;
996 }
997
998 static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
999                         struct msghdr *msg, size_t len)
1000 {
1001         struct sock *sk = sock->sk;
1002         struct rose_sock *rose = rose_sk(sk);
1003         struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1004         int err;
1005         struct full_sockaddr_rose srose;
1006         struct sk_buff *skb;
1007         unsigned char *asmptr;
1008         int n, size, qbit = 0;
1009
1010         if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1011                 return -EINVAL;
1012
1013         if (sock_flag(sk, SOCK_ZAPPED))
1014                 return -EADDRNOTAVAIL;
1015
1016         if (sk->sk_shutdown & SEND_SHUTDOWN) {
1017                 send_sig(SIGPIPE, current, 0);
1018                 return -EPIPE;
1019         }
1020
1021         if (rose->neighbour == NULL || rose->device == NULL)
1022                 return -ENETUNREACH;
1023
1024         if (usrose != NULL) {
1025                 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1026                         return -EINVAL;
1027                 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1028                 memcpy(&srose, usrose, msg->msg_namelen);
1029                 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1030                     ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1031                         return -EISCONN;
1032                 if (srose.srose_ndigis != rose->dest_ndigis)
1033                         return -EISCONN;
1034                 if (srose.srose_ndigis == rose->dest_ndigis) {
1035                         for (n = 0 ; n < srose.srose_ndigis ; n++)
1036                                 if (ax25cmp(&rose->dest_digis[n],
1037                                             &srose.srose_digis[n]))
1038                                         return -EISCONN;
1039                 }
1040                 if (srose.srose_family != AF_ROSE)
1041                         return -EINVAL;
1042         } else {
1043                 if (sk->sk_state != TCP_ESTABLISHED)
1044                         return -ENOTCONN;
1045
1046                 srose.srose_family = AF_ROSE;
1047                 srose.srose_addr   = rose->dest_addr;
1048                 srose.srose_call   = rose->dest_call;
1049                 srose.srose_ndigis = rose->dest_ndigis;
1050                 for (n = 0 ; n < rose->dest_ndigis ; n++)
1051                         srose.srose_digis[n] = rose->dest_digis[n];
1052         }
1053
1054         SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n");
1055
1056         /* Build a packet */
1057         SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n");
1058         size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1059
1060         if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1061                 return err;
1062
1063         skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1064
1065         /*
1066          *      Put the data on the end
1067          */
1068         SOCK_DEBUG(sk, "ROSE: Appending user data\n");
1069
1070         asmptr = skb->h.raw = skb_put(skb, len);
1071
1072         err = memcpy_fromiovec(asmptr, msg->msg_iov, len);
1073         if (err) {
1074                 kfree_skb(skb);
1075                 return err;
1076         }
1077
1078         /*
1079          *      If the Q BIT Include socket option is in force, the first
1080          *      byte of the user data is the logical value of the Q Bit.
1081          */
1082         if (rose->qbitincl) {
1083                 qbit = skb->data[0];
1084                 skb_pull(skb, 1);
1085         }
1086
1087         /*
1088          *      Push down the ROSE header
1089          */
1090         asmptr = skb_push(skb, ROSE_MIN_LEN);
1091
1092         SOCK_DEBUG(sk, "ROSE: Building Network Header.\n");
1093
1094         /* Build a ROSE Network header */
1095         asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1096         asmptr[1] = (rose->lci >> 0) & 0xFF;
1097         asmptr[2] = ROSE_DATA;
1098
1099         if (qbit)
1100                 asmptr[0] |= ROSE_Q_BIT;
1101
1102         SOCK_DEBUG(sk, "ROSE: Built header.\n");
1103
1104         SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n");
1105
1106         if (sk->sk_state != TCP_ESTABLISHED) {
1107                 kfree_skb(skb);
1108                 return -ENOTCONN;
1109         }
1110
1111 #ifdef M_BIT
1112 #define ROSE_PACLEN (256-ROSE_MIN_LEN)
1113         if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1114                 unsigned char header[ROSE_MIN_LEN];
1115                 struct sk_buff *skbn;
1116                 int frontlen;
1117                 int lg;
1118
1119                 /* Save a copy of the Header */
1120                 memcpy(header, skb->data, ROSE_MIN_LEN);
1121                 skb_pull(skb, ROSE_MIN_LEN);
1122
1123                 frontlen = skb_headroom(skb);
1124
1125                 while (skb->len > 0) {
1126                         if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1127                                 kfree_skb(skb);
1128                                 return err;
1129                         }
1130
1131                         skbn->sk   = sk;
1132                         skbn->free = 1;
1133                         skbn->arp  = 1;
1134
1135                         skb_reserve(skbn, frontlen);
1136
1137                         lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1138
1139                         /* Copy the user data */
1140                         memcpy(skb_put(skbn, lg), skb->data, lg);
1141                         skb_pull(skb, lg);
1142
1143                         /* Duplicate the Header */
1144                         skb_push(skbn, ROSE_MIN_LEN);
1145                         memcpy(skbn->data, header, ROSE_MIN_LEN);
1146
1147                         if (skb->len > 0)
1148                                 skbn->data[2] |= M_BIT;
1149
1150                         skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1151                 }
1152
1153                 skb->free = 1;
1154                 kfree_skb(skb);
1155         } else {
1156                 skb_queue_tail(&sk->sk_write_queue, skb);               /* Throw it on the queue */
1157         }
1158 #else
1159         skb_queue_tail(&sk->sk_write_queue, skb);       /* Shove it onto the queue */
1160 #endif
1161
1162         rose_kick(sk);
1163
1164         return len;
1165 }
1166
1167
1168 static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1169                         struct msghdr *msg, size_t size, int flags)
1170 {
1171         struct sock *sk = sock->sk;
1172         struct rose_sock *rose = rose_sk(sk);
1173         struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
1174         size_t copied;
1175         unsigned char *asmptr;
1176         struct sk_buff *skb;
1177         int n, er, qbit;
1178
1179         /*
1180          * This works for seqpacket too. The receiver has ordered the queue for
1181          * us! We do one quick check first though
1182          */
1183         if (sk->sk_state != TCP_ESTABLISHED)
1184                 return -ENOTCONN;
1185
1186         /* Now we can treat all alike */
1187         if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1188                 return er;
1189
1190         qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1191
1192         skb_pull(skb, ROSE_MIN_LEN);
1193
1194         if (rose->qbitincl) {
1195                 asmptr  = skb_push(skb, 1);
1196                 *asmptr = qbit;
1197         }
1198
1199         skb->h.raw = skb->data;
1200         copied     = skb->len;
1201
1202         if (copied > size) {
1203                 copied = size;
1204                 msg->msg_flags |= MSG_TRUNC;
1205         }
1206
1207         skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1208
1209         if (srose != NULL) {
1210                 srose->srose_family = AF_ROSE;
1211                 srose->srose_addr   = rose->dest_addr;
1212                 srose->srose_call   = rose->dest_call;
1213                 srose->srose_ndigis = rose->dest_ndigis;
1214                 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
1215                         struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
1216                         for (n = 0 ; n < rose->dest_ndigis ; n++)
1217                                 full_srose->srose_digis[n] = rose->dest_digis[n];
1218                         msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1219                 } else {
1220                         if (rose->dest_ndigis >= 1) {
1221                                 srose->srose_ndigis = 1;
1222                                 srose->srose_digi = rose->dest_digis[0];
1223                         }
1224                         msg->msg_namelen = sizeof(struct sockaddr_rose);
1225                 }
1226         }
1227
1228         skb_free_datagram(sk, skb);
1229
1230         return copied;
1231 }
1232
1233
1234 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1235 {
1236         struct sock *sk = sock->sk;
1237         struct rose_sock *rose = rose_sk(sk);
1238         void __user *argp = (void __user *)arg;
1239
1240         switch (cmd) {
1241         case TIOCOUTQ: {
1242                 long amount;
1243                 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
1244                 if (amount < 0)
1245                         amount = 0;
1246                 return put_user(amount, (unsigned int __user *)argp);
1247         }
1248
1249         case TIOCINQ: {
1250                 struct sk_buff *skb;
1251                 long amount = 0L;
1252                 /* These two are safe on a single CPU system as only user tasks fiddle here */
1253                 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1254                         amount = skb->len;
1255                 return put_user(amount, (unsigned int __user *)argp);
1256         }
1257
1258         case SIOCGSTAMP:
1259                 if (sk != NULL) 
1260                         return sock_get_timestamp(sk, (struct timeval __user *)argp);
1261                 return -EINVAL;
1262
1263         case SIOCGIFADDR:
1264         case SIOCSIFADDR:
1265         case SIOCGIFDSTADDR:
1266         case SIOCSIFDSTADDR:
1267         case SIOCGIFBRDADDR:
1268         case SIOCSIFBRDADDR:
1269         case SIOCGIFNETMASK:
1270         case SIOCSIFNETMASK:
1271         case SIOCGIFMETRIC:
1272         case SIOCSIFMETRIC:
1273                 return -EINVAL;
1274
1275         case SIOCADDRT:
1276         case SIOCDELRT:
1277         case SIOCRSCLRRT:
1278                 if (!capable(CAP_NET_ADMIN))
1279                         return -EPERM;
1280                 return rose_rt_ioctl(cmd, argp);
1281
1282         case SIOCRSGCAUSE: {
1283                 struct rose_cause_struct rose_cause;
1284                 rose_cause.cause      = rose->cause;
1285                 rose_cause.diagnostic = rose->diagnostic;
1286                 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1287         }
1288
1289         case SIOCRSSCAUSE: {
1290                 struct rose_cause_struct rose_cause;
1291                 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1292                         return -EFAULT;
1293                 rose->cause      = rose_cause.cause;
1294                 rose->diagnostic = rose_cause.diagnostic;
1295                 return 0;
1296         }
1297
1298         case SIOCRSSL2CALL:
1299                 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1300                 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1301                         ax25_listen_release(&rose_callsign, NULL);
1302                 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1303                         return -EFAULT;
1304                 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1305                         ax25_listen_register(&rose_callsign, NULL);
1306                 return 0;
1307
1308         case SIOCRSGL2CALL:
1309                 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1310
1311         case SIOCRSACCEPT:
1312                 if (rose->state == ROSE_STATE_5) {
1313                         rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1314                         rose_start_idletimer(sk);
1315                         rose->condition = 0x00;
1316                         rose->vs        = 0;
1317                         rose->va        = 0;
1318                         rose->vr        = 0;
1319                         rose->vl        = 0;
1320                         rose->state     = ROSE_STATE_3;
1321                 }
1322                 return 0;
1323
1324         default:
1325                 return dev_ioctl(cmd, argp);
1326         }
1327
1328         return 0;
1329 }
1330
1331 #ifdef CONFIG_PROC_FS
1332 static void *rose_info_start(struct seq_file *seq, loff_t *pos)
1333 {
1334         int i;
1335         struct sock *s;
1336         struct hlist_node *node;
1337
1338         spin_lock_bh(&rose_list_lock);
1339         if (*pos == 0)
1340                 return SEQ_START_TOKEN;
1341         
1342         i = 1;
1343         sk_for_each(s, node, &rose_list) {
1344                 if (i == *pos)
1345                         return s;
1346                 ++i;
1347         }
1348         return NULL;
1349 }
1350
1351 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1352 {
1353         ++*pos;
1354
1355         return (v == SEQ_START_TOKEN) ? sk_head(&rose_list) 
1356                 : sk_next((struct sock *)v);
1357 }
1358         
1359 static void rose_info_stop(struct seq_file *seq, void *v)
1360 {
1361         spin_unlock_bh(&rose_list_lock);
1362 }
1363
1364 static int rose_info_show(struct seq_file *seq, void *v)
1365 {
1366         if (v == SEQ_START_TOKEN)
1367                 seq_puts(seq, 
1368                          "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");
1369
1370         else {
1371                 struct sock *s = v;
1372                 struct rose_sock *rose = rose_sk(s);
1373                 const char *devname, *callsign;
1374                 const struct net_device *dev = rose->device;
1375
1376                 if (!dev)
1377                         devname = "???";
1378                 else
1379                         devname = dev->name;
1380                 
1381                 seq_printf(seq, "%-10s %-9s ",
1382                         rose2asc(&rose->dest_addr),
1383                         ax2asc(&rose->dest_call));
1384
1385                 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1386                         callsign = "??????-?";
1387                 else
1388                         callsign = ax2asc(&rose->source_call);
1389
1390                 seq_printf(seq,
1391                            "%-10s %-9s %-5s %3.3X %05d  %d  %d  %d  %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
1392                         rose2asc(&rose->source_addr),
1393                         callsign,
1394                         devname,
1395                         rose->lci & 0x0FFF,
1396                         (rose->neighbour) ? rose->neighbour->number : 0,
1397                         rose->state,
1398                         rose->vs,
1399                         rose->vr,
1400                         rose->va,
1401                         ax25_display_timer(&rose->timer) / HZ,
1402                         rose->t1 / HZ,
1403                         rose->t2 / HZ,
1404                         rose->t3 / HZ,
1405                         rose->hb / HZ,
1406                         ax25_display_timer(&rose->idletimer) / (60 * HZ),
1407                         rose->idle / (60 * HZ),
1408                         atomic_read(&s->sk_wmem_alloc),
1409                         atomic_read(&s->sk_rmem_alloc),
1410                         s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1411         }
1412
1413         return 0;
1414 }
1415
1416 static struct seq_operations rose_info_seqops = {
1417         .start = rose_info_start,
1418         .next = rose_info_next,
1419         .stop = rose_info_stop,
1420         .show = rose_info_show,
1421 };
1422
1423 static int rose_info_open(struct inode *inode, struct file *file)
1424 {
1425         return seq_open(file, &rose_info_seqops);
1426 }
1427
1428 static struct file_operations rose_info_fops = {
1429         .owner = THIS_MODULE,
1430         .open = rose_info_open,
1431         .read = seq_read,
1432         .llseek = seq_lseek,
1433         .release = seq_release,
1434 };
1435 #endif  /* CONFIG_PROC_FS */
1436
1437 static struct net_proto_family rose_family_ops = {
1438         .family         =       PF_ROSE,
1439         .create         =       rose_create,
1440         .owner          =       THIS_MODULE,
1441 };
1442
1443 static struct proto_ops rose_proto_ops = {
1444         .family         =       PF_ROSE,
1445         .owner          =       THIS_MODULE,
1446         .release        =       rose_release,
1447         .bind           =       rose_bind,
1448         .connect        =       rose_connect,
1449         .socketpair     =       sock_no_socketpair,
1450         .accept         =       rose_accept,
1451         .getname        =       rose_getname,
1452         .poll           =       datagram_poll,
1453         .ioctl          =       rose_ioctl,
1454         .listen         =       rose_listen,
1455         .shutdown       =       sock_no_shutdown,
1456         .setsockopt     =       rose_setsockopt,
1457         .getsockopt     =       rose_getsockopt,
1458         .sendmsg        =       rose_sendmsg,
1459         .recvmsg        =       rose_recvmsg,
1460         .mmap           =       sock_no_mmap,
1461         .sendpage       =       sock_no_sendpage,
1462 };
1463
1464 static struct notifier_block rose_dev_notifier = {
1465         .notifier_call  =       rose_device_event,
1466 };
1467
1468 static struct net_device **dev_rose;
1469
1470 static const char banner[] = KERN_INFO "F6FBB/G4KLX ROSE for Linux. Version 0.62 for AX25.037 Linux 2.4\n";
1471
1472 static int __init rose_proto_init(void)
1473 {
1474         int i;
1475         int rc = proto_register(&rose_proto, 0);
1476
1477         if (rc != 0)
1478                 goto out;
1479
1480         rose_callsign = null_ax25_address;
1481
1482         if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1483                 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1484                 return -1;
1485         }
1486
1487         dev_rose = kmalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
1488         if (dev_rose == NULL) {
1489                 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
1490                 return -1;
1491         }
1492
1493         memset(dev_rose, 0x00, rose_ndevs * sizeof(struct net_device*));
1494         for (i = 0; i < rose_ndevs; i++) {
1495                 struct net_device *dev;
1496                 char name[IFNAMSIZ];
1497
1498                 sprintf(name, "rose%d", i);
1499                 dev = alloc_netdev(sizeof(struct net_device_stats), 
1500                                    name, rose_setup);
1501                 if (!dev) {
1502                         printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
1503                         goto fail;
1504                 }
1505                 if (register_netdev(dev)) {
1506                         printk(KERN_ERR "ROSE: netdevice regeistration failed\n");
1507                         free_netdev(dev);
1508                         goto fail;
1509                 }
1510                 dev_rose[i] = dev;
1511         }
1512
1513         sock_register(&rose_family_ops);
1514         register_netdevice_notifier(&rose_dev_notifier);
1515         printk(banner);
1516
1517         ax25_protocol_register(AX25_P_ROSE, rose_route_frame);
1518         ax25_linkfail_register(rose_link_failed);
1519
1520 #ifdef CONFIG_SYSCTL
1521         rose_register_sysctl();
1522 #endif
1523         rose_loopback_init();
1524
1525         rose_add_loopback_neigh();
1526
1527         proc_net_fops_create("rose", S_IRUGO, &rose_info_fops);
1528         proc_net_fops_create("rose_neigh", S_IRUGO, &rose_neigh_fops);
1529         proc_net_fops_create("rose_nodes", S_IRUGO, &rose_nodes_fops);
1530         proc_net_fops_create("rose_routes", S_IRUGO, &rose_routes_fops);
1531 out:
1532         return rc;
1533 fail:
1534         while (--i >= 0) {
1535                 unregister_netdev(dev_rose[i]);
1536                 free_netdev(dev_rose[i]);
1537         }
1538         kfree(dev_rose);
1539         proto_unregister(&rose_proto);
1540         return -ENOMEM;
1541 }
1542 module_init(rose_proto_init);
1543
1544 module_param(rose_ndevs, int, 0);
1545 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1546
1547 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1548 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1549 MODULE_LICENSE("GPL");
1550 MODULE_ALIAS_NETPROTO(PF_ROSE);
1551
1552 static void __exit rose_exit(void)
1553 {
1554         int i;
1555
1556         proc_net_remove("rose");
1557         proc_net_remove("rose_neigh");
1558         proc_net_remove("rose_nodes");
1559         proc_net_remove("rose_routes");
1560         rose_loopback_clear();
1561
1562         rose_rt_free();
1563
1564         ax25_protocol_release(AX25_P_ROSE);
1565         ax25_linkfail_release(rose_link_failed);
1566
1567         if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1568                 ax25_listen_release(&rose_callsign, NULL);
1569
1570 #ifdef CONFIG_SYSCTL
1571         rose_unregister_sysctl();
1572 #endif
1573         unregister_netdevice_notifier(&rose_dev_notifier);
1574
1575         sock_unregister(PF_ROSE);
1576
1577         for (i = 0; i < rose_ndevs; i++) {
1578                 struct net_device *dev = dev_rose[i];
1579
1580                 if (dev) {
1581                         unregister_netdev(dev);
1582                         free_netdev(dev);
1583                 }
1584         }
1585
1586         kfree(dev_rose);
1587         proto_unregister(&rose_proto);
1588 }
1589
1590 module_exit(rose_exit);