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net: proc: change proc_net_fops_create to proc_create
[GitHub/mt8127/android_kernel_alcatel_ttab.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>
5a0e3ad6 21#include <linux/slab.h>
1da177e4
LT		 22#include <linux/kernel.h>
23#include <linux/sched.h>
24#include <linux/spinlock.h>
25#include <linux/timer.h>
26#include <linux/string.h>
27#include <linux/sockios.h>
28#include <linux/net.h>
29#include <linux/stat.h>
457c4cbc 30#include <net/net_namespace.h>
1da177e4
LT		 31#include <net/ax25.h>
32#include <linux/inet.h>
33#include <linux/netdevice.h>
34#include <linux/if_arp.h>
35#include <linux/skbuff.h>
36#include <net/sock.h>
1da177e4
LT		 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
5708e868 66static const struct proto_ops rose_proto_ops;
1da177e4
LT		 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;
cf508b12 77static struct lock_class_key rose_netdev_addr_lock_key;
b1d21ca8 78
e8a0464c
DM		 79static void rose_set_lockdep_one(struct net_device *dev,
80 struct netdev_queue *txq,
81 void *_unused)
c773e847
DM		 82{
83 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
84}
85
86static void rose_set_lockdep_key(struct net_device *dev)
87{
cf508b12 88 lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key);
e8a0464c 89 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
c773e847
DM		 90}
91
1da177e4
LT		 92/*
93 * Convert a ROSE address into text.
94 */
dcf777f6 95char *rose2asc(char *buf, const rose_address *addr)
1da177e4 96{
1da177e4
LT		 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) {
dcf777f6 100 strcpy(buf, "*");
1da177e4 101 } else {
dcf777f6 102 sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
1da177e4
LT		 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
dcf777f6 109 return buf;
1da177e4
LT		 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
721499e8 212 if (!net_eq(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
c564039f 357 if (sk_has_allocations(sk)) {
1da177e4 358 /* Defer: outstanding buffers */
b24b8a24
PE		 359 setup_timer(&sk->sk_timer, rose_destroy_timer,
360 (unsigned long)sk);
1da177e4 361 sk->sk_timer.expires = jiffies + 10 * HZ;
1da177e4
LT		 362 add_timer(&sk->sk_timer);
363 } else
364 sock_put(sk);
365}
366
367/*
368 * Handling for system calls applied via the various interfaces to a
369 * ROSE socket object.
370 */
371
372static int rose_setsockopt(struct socket *sock, int level, int optname,
b7058842 373 char __user *optval, unsigned int optlen)
1da177e4
LT		 374{
375 struct sock *sk = sock->sk;
376 struct rose_sock *rose = rose_sk(sk);
377 int opt;
378
379 if (level != SOL_ROSE)
380 return -ENOPROTOOPT;
381
382 if (optlen < sizeof(int))
383 return -EINVAL;
384
385 if (get_user(opt, (int __user *)optval))
386 return -EFAULT;
387
388 switch (optname) {
389 case ROSE_DEFER:
390 rose->defer = opt ? 1 : 0;
391 return 0;
392
393 case ROSE_T1:
394 if (opt < 1)
395 return -EINVAL;
396 rose->t1 = opt * HZ;
397 return 0;
398
399 case ROSE_T2:
400 if (opt < 1)
401 return -EINVAL;
402 rose->t2 = opt * HZ;
403 return 0;
404
405 case ROSE_T3:
406 if (opt < 1)
407 return -EINVAL;
408 rose->t3 = opt * HZ;
409 return 0;
410
411 case ROSE_HOLDBACK:
412 if (opt < 1)
413 return -EINVAL;
414 rose->hb = opt * HZ;
415 return 0;
416
417 case ROSE_IDLE:
418 if (opt < 0)
419 return -EINVAL;
420 rose->idle = opt * 60 * HZ;
421 return 0;
422
423 case ROSE_QBITINCL:
424 rose->qbitincl = opt ? 1 : 0;
425 return 0;
426
427 default:
428 return -ENOPROTOOPT;
429 }
430}
431
432static int rose_getsockopt(struct socket *sock, int level, int optname,
433 char __user *optval, int __user *optlen)
434{
435 struct sock *sk = sock->sk;
436 struct rose_sock *rose = rose_sk(sk);
437 int val = 0;
438 int len;
439
440 if (level != SOL_ROSE)
441 return -ENOPROTOOPT;
442
443 if (get_user(len, optlen))
444 return -EFAULT;
445
446 if (len < 0)
447 return -EINVAL;
448
449 switch (optname) {
450 case ROSE_DEFER:
451 val = rose->defer;
452 break;
453
454 case ROSE_T1:
455 val = rose->t1 / HZ;
456 break;
457
458 case ROSE_T2:
459 val = rose->t2 / HZ;
460 break;
461
462 case ROSE_T3:
463 val = rose->t3 / HZ;
464 break;
465
466 case ROSE_HOLDBACK:
467 val = rose->hb / HZ;
468 break;
469
470 case ROSE_IDLE:
471 val = rose->idle / (60 * HZ);
472 break;
473
474 case ROSE_QBITINCL:
475 val = rose->qbitincl;
476 break;
477
478 default:
479 return -ENOPROTOOPT;
480 }
481
482 len = min_t(unsigned int, len, sizeof(int));
483
484 if (put_user(len, optlen))
485 return -EFAULT;
486
487 return copy_to_user(optval, &val, len) ? -EFAULT : 0;
488}
489
490static int rose_listen(struct socket *sock, int backlog)
491{
492 struct sock *sk = sock->sk;
493
494 if (sk->sk_state != TCP_LISTEN) {
495 struct rose_sock *rose = rose_sk(sk);
496
497 rose->dest_ndigis = 0;
498 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
499 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
500 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
501 sk->sk_max_ack_backlog = backlog;
502 sk->sk_state = TCP_LISTEN;
503 return 0;
504 }
505
506 return -EOPNOTSUPP;
507}
508
509static struct proto rose_proto = {
510 .name = "ROSE",
511 .owner = THIS_MODULE,
512 .obj_size = sizeof(struct rose_sock),
513};
514
3f378b68
EP		 515static int rose_create(struct net *net, struct socket *sock, int protocol,
516 int kern)
1da177e4
LT		 517{
518 struct sock *sk;
519 struct rose_sock *rose;
520
09ad9bc7 521 if (!net_eq(net, &init_net))
1b8d7ae4
EB		 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
9828e6e6 681 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
1da177e4
LT		 682 return -EINVAL;
683
8849b720 684 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL)
1da177e4 685 return -EADDRNOTAVAIL;
1da177e4
LT		 686
687 source = &addr->srose_call;
688
c2a2b8d3 689 user = ax25_findbyuid(current_euid());
01d7dd0e
RB		 690 if (user) {
691 rose->source_call = user->call;
692 ax25_uid_put(user);
693 } else {
1da177e4
LT		 694 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
695 return -EACCES;
01d7dd0e 696 rose->source_call = *source;
1da177e4
LT		 697 }
698
699 rose->source_addr = addr->srose_addr;
1da177e4
LT		 700 rose->device = dev;
701 rose->source_ndigis = addr->srose_ndigis;
702
703 if (addr_len == sizeof(struct full_sockaddr_rose)) {
704 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
705 for (n = 0 ; n < addr->srose_ndigis ; n++)
706 rose->source_digis[n] = full_addr->srose_digis[n];
707 } else {
708 if (rose->source_ndigis == 1) {
709 rose->source_digis[0] = addr->srose_digi;
710 }
711 }
712
713 rose_insert_socket(sk);
714
715 sock_reset_flag(sk, SOCK_ZAPPED);
8849b720 716
1da177e4
LT		 717 return 0;
718}
719
720static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
721{
722 struct sock *sk = sock->sk;
723 struct rose_sock *rose = rose_sk(sk);
724 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
725 unsigned char cause, diagnostic;
1da177e4 726 struct net_device *dev;
01d7dd0e 727 ax25_uid_assoc *user;
2536b94a 728 int n, err = 0;
1da177e4
LT		 729
730 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
731 return -EINVAL;
732
733 if (addr->srose_family != AF_ROSE)
734 return -EINVAL;
735
736 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
737 return -EINVAL;
738
9828e6e6 739 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
1da177e4
LT		 740 return -EINVAL;
741
742 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
743 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
744 return -EINVAL;
745
2536b94a
RB		 746 lock_sock(sk);
747
748 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
749 /* Connect completed during a ERESTARTSYS event */
750 sock->state = SS_CONNECTED;
751 goto out_release;
752 }
753
754 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
755 sock->state = SS_UNCONNECTED;
756 err = -ECONNREFUSED;
757 goto out_release;
758 }
759
760 if (sk->sk_state == TCP_ESTABLISHED) {
761 /* No reconnect on a seqpacket socket */
762 err = -EISCONN;
763 goto out_release;
764 }
765
766 sk->sk_state = TCP_CLOSE;
767 sock->state = SS_UNCONNECTED;
768
1da177e4 769 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
fe2c802a 770 &diagnostic, 0);
43837b1e
BP		 771 if (!rose->neighbour) {
772 err = -ENETUNREACH;
773 goto out_release;
774 }
1da177e4
LT		 775
776 rose->lci = rose_new_lci(rose->neighbour);
2536b94a
RB		 777 if (!rose->lci) {
778 err = -ENETUNREACH;
779 goto out_release;
780 }
1da177e4
LT		 781
782 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
783 sock_reset_flag(sk, SOCK_ZAPPED);
784
2536b94a
RB		 785 if ((dev = rose_dev_first()) == NULL) {
786 err = -ENETUNREACH;
787 goto out_release;
788 }
1da177e4 789
c2a2b8d3 790 user = ax25_findbyuid(current_euid());
2536b94a
RB		 791 if (!user) {
792 err = -EINVAL;
793 goto out_release;
794 }
1da177e4
LT		 795
796 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
01d7dd0e 797 rose->source_call = user->call;
1da177e4 798 rose->device = dev;
01d7dd0e 799 ax25_uid_put(user);
1da177e4
LT		 800
801 rose_insert_socket(sk); /* Finish the bind */
802 }
1da177e4
LT		 803 rose->dest_addr = addr->srose_addr;
804 rose->dest_call = addr->srose_call;
805 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
806 rose->dest_ndigis = addr->srose_ndigis;
807
808 if (addr_len == sizeof(struct full_sockaddr_rose)) {
809 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
810 for (n = 0 ; n < addr->srose_ndigis ; n++)
811 rose->dest_digis[n] = full_addr->srose_digis[n];
812 } else {
813 if (rose->dest_ndigis == 1) {
814 rose->dest_digis[0] = addr->srose_digi;
815 }
816 }
817
818 /* Move to connecting socket, start sending Connect Requests */
819 sock->state = SS_CONNECTING;
820 sk->sk_state = TCP_SYN_SENT;
821
822 rose->state = ROSE_STATE_1;
823
824 rose->neighbour->use++;
825
826 rose_write_internal(sk, ROSE_CALL_REQUEST);
827 rose_start_heartbeat(sk);
828 rose_start_t1timer(sk);
829
830 /* Now the loop */
2536b94a
RB		 831 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
832 err = -EINPROGRESS;
833 goto out_release;
834 }
1da177e4
LT		 835
836 /*
837 * A Connect Ack with Choke or timeout or failed routing will go to
838 * closed.
839 */
840 if (sk->sk_state == TCP_SYN_SENT) {
75606dc6 841 DEFINE_WAIT(wait);
1da177e4 842
1da177e4 843 for (;;) {
aa395145 844 prepare_to_wait(sk_sleep(sk), &wait,
6140efb5 845 TASK_INTERRUPTIBLE);
1da177e4
LT		 846 if (sk->sk_state != TCP_SYN_SENT)
847 break;
75606dc6
RB		 848 if (!signal_pending(current)) {
849 release_sock(sk);
1da177e4 850 schedule();
2536b94a 851 lock_sock(sk);
1da177e4
LT		 852 continue;
853 }
75606dc6
RB		 854 err = -ERESTARTSYS;
855 break;
1da177e4 856 }
aa395145 857 finish_wait(sk_sleep(sk), &wait);
75606dc6
RB		 858
859 if (err)
860 goto out_release;
1da177e4
LT		 861 }
862
863 if (sk->sk_state != TCP_ESTABLISHED) {
864 sock->state = SS_UNCONNECTED;
2536b94a
RB		 865 err = sock_error(sk); /* Always set at this point */
866 goto out_release;
1da177e4
LT		 867 }
868
869 sock->state = SS_CONNECTED;
870
2536b94a
RB		 871out_release:
872 release_sock(sk);
873
874 return err;
1da177e4
LT		 875}
876
877static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
878{
1da177e4
LT		 879 struct sk_buff *skb;
880 struct sock *newsk;
75606dc6 881 DEFINE_WAIT(wait);
1da177e4
LT		 882 struct sock *sk;
883 int err = 0;
884
885 if ((sk = sock->sk) == NULL)
886 return -EINVAL;
887
888 lock_sock(sk);
889 if (sk->sk_type != SOCK_SEQPACKET) {
890 err = -EOPNOTSUPP;
75606dc6 891 goto out_release;
1da177e4
LT		 892 }
893
894 if (sk->sk_state != TCP_LISTEN) {
895 err = -EINVAL;
75606dc6 896 goto out_release;
1da177e4
LT		 897 }
898
899 /*
900 * The write queue this time is holding sockets ready to use
901 * hooked into the SABM we saved
902 */
1da177e4 903 for (;;) {
aa395145 904 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
75606dc6 905
1da177e4
LT		 906 skb = skb_dequeue(&sk->sk_receive_queue);
907 if (skb)
908 break;
909
1da177e4 910 if (flags & O_NONBLOCK) {
75606dc6
RB		 911 err = -EWOULDBLOCK;
912 break;
1da177e4 913 }
75606dc6
RB		 914 if (!signal_pending(current)) {
915 release_sock(sk);
1da177e4
LT		 916 schedule();
917 lock_sock(sk);
918 continue;
919 }
75606dc6
RB		 920 err = -ERESTARTSYS;
921 break;
1da177e4 922 }
aa395145 923 finish_wait(sk_sleep(sk), &wait);
75606dc6
RB		 924 if (err)
925 goto out_release;
1da177e4
LT		 926
927 newsk = skb->sk;
44ccff1f 928 sock_graft(newsk, newsock);
1da177e4
LT		 929
930 /* Now attach up the new socket */
931 skb->sk = NULL;
932 kfree_skb(skb);
933 sk->sk_ack_backlog--;
1da177e4 934
75606dc6 935out_release:
1da177e4
LT		 936 release_sock(sk);
937
938 return err;
939}
940
941static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
942 int *uaddr_len, int peer)
943{
944 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
945 struct sock *sk = sock->sk;
946 struct rose_sock *rose = rose_sk(sk);
947 int n;
948
17ac2e9c 949 memset(srose, 0, sizeof(*srose));
1da177e4
LT		 950 if (peer != 0) {
951 if (sk->sk_state != TCP_ESTABLISHED)
952 return -ENOTCONN;
953 srose->srose_family = AF_ROSE;
954 srose->srose_addr = rose->dest_addr;
955 srose->srose_call = rose->dest_call;
956 srose->srose_ndigis = rose->dest_ndigis;
957 for (n = 0; n < rose->dest_ndigis; n++)
958 srose->srose_digis[n] = rose->dest_digis[n];
959 } else {
960 srose->srose_family = AF_ROSE;
961 srose->srose_addr = rose->source_addr;
962 srose->srose_call = rose->source_call;
963 srose->srose_ndigis = rose->source_ndigis;
964 for (n = 0; n < rose->source_ndigis; n++)
965 srose->srose_digis[n] = rose->source_digis[n];
966 }
967
968 *uaddr_len = sizeof(struct full_sockaddr_rose);
969 return 0;
970}
971
972int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
973{
974 struct sock *sk;
975 struct sock *make;
976 struct rose_sock *make_rose;
977 struct rose_facilities_struct facilities;
e0bccd31 978 int n;
1da177e4
LT		 979
980 skb->sk = NULL; /* Initially we don't know who it's for */
981
982 /*
983 * skb->data points to the rose frame start
984 */
985 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
986
e0bccd31
BH		 987 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF,
988 skb->len - ROSE_CALL_REQ_FACILITIES_OFF,
989 &facilities)) {
1da177e4
LT		 990 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
991 return 0;
992 }
993
994 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
995
996 /*
997 * We can't accept the Call Request.
998 */
999 if (sk == NULL || sk_acceptq_is_full(sk) ||
1000 (make = rose_make_new(sk)) == NULL) {
1001 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
1002 return 0;
1003 }
1004
1005 skb->sk = make;
1006 make->sk_state = TCP_ESTABLISHED;
1007 make_rose = rose_sk(make);
1008
1009 make_rose->lci = lci;
1010 make_rose->dest_addr = facilities.dest_addr;
1011 make_rose->dest_call = facilities.dest_call;
1012 make_rose->dest_ndigis = facilities.dest_ndigis;
1013 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1014 make_rose->dest_digis[n] = facilities.dest_digis[n];
1015 make_rose->source_addr = facilities.source_addr;
1016 make_rose->source_call = facilities.source_call;
1017 make_rose->source_ndigis = facilities.source_ndigis;
1018 for (n = 0 ; n < facilities.source_ndigis ; n++)
1019 make_rose->source_digis[n]= facilities.source_digis[n];
1020 make_rose->neighbour = neigh;
1021 make_rose->device = dev;
1022 make_rose->facilities = facilities;
1023
1024 make_rose->neighbour->use++;
1025
1026 if (rose_sk(sk)->defer) {
1027 make_rose->state = ROSE_STATE_5;
1028 } else {
1029 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1030 make_rose->state = ROSE_STATE_3;
1031 rose_start_idletimer(make);
1032 }
1033
1034 make_rose->condition = 0x00;
1035 make_rose->vs = 0;
1036 make_rose->va = 0;
1037 make_rose->vr = 0;
1038 make_rose->vl = 0;
1039 sk->sk_ack_backlog++;
1040
1041 rose_insert_socket(make);
1042
1043 skb_queue_head(&sk->sk_receive_queue, skb);
1044
1045 rose_start_heartbeat(make);
1046
1047 if (!sock_flag(sk, SOCK_DEAD))
1048 sk->sk_data_ready(sk, skb->len);
1049
1050 return 1;
1051}
1052
1053static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
1054 struct msghdr *msg, size_t len)
1055{
1056 struct sock *sk = sock->sk;
1057 struct rose_sock *rose = rose_sk(sk);
1058 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1059 int err;
1060 struct full_sockaddr_rose srose;
1061 struct sk_buff *skb;
1062 unsigned char *asmptr;
1063 int n, size, qbit = 0;
1064
1065 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1066 return -EINVAL;
1067
1068 if (sock_flag(sk, SOCK_ZAPPED))
1069 return -EADDRNOTAVAIL;
1070
1071 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1072 send_sig(SIGPIPE, current, 0);
1073 return -EPIPE;
1074 }
1075
1076 if (rose->neighbour == NULL || rose->device == NULL)
1077 return -ENETUNREACH;
1078
1079 if (usrose != NULL) {
1080 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1081 return -EINVAL;
1082 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1083 memcpy(&srose, usrose, msg->msg_namelen);
1084 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1085 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1086 return -EISCONN;
1087 if (srose.srose_ndigis != rose->dest_ndigis)
1088 return -EISCONN;
1089 if (srose.srose_ndigis == rose->dest_ndigis) {
1090 for (n = 0 ; n < srose.srose_ndigis ; n++)
1091 if (ax25cmp(&rose->dest_digis[n],
1092 &srose.srose_digis[n]))
1093 return -EISCONN;
1094 }
1095 if (srose.srose_family != AF_ROSE)
1096 return -EINVAL;
1097 } else {
1098 if (sk->sk_state != TCP_ESTABLISHED)
1099 return -ENOTCONN;
1100
1101 srose.srose_family = AF_ROSE;
1102 srose.srose_addr = rose->dest_addr;
1103 srose.srose_call = rose->dest_call;
1104 srose.srose_ndigis = rose->dest_ndigis;
1105 for (n = 0 ; n < rose->dest_ndigis ; n++)
1106 srose.srose_digis[n] = rose->dest_digis[n];
1107 }
1108
1da177e4 1109 /* Build a packet */
83e0bbcb
AC		 1110 /* Sanity check the packet size */
1111 if (len > 65535)
1112 return -EMSGSIZE;
1113
1da177e4
LT		 1114 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1115
1116 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1117 return err;
1118
1119 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1120
1121 /*
1122 * Put the data on the end
1123 */
1da177e4 1124
eeeb0374
ACM		 1125 skb_reset_transport_header(skb);
1126 skb_put(skb, len);
1da177e4 1127
eeeb0374 1128 err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1da177e4
LT		 1129 if (err) {
1130 kfree_skb(skb);
1131 return err;
1132 }
1133
1134 /*
1135 * If the Q BIT Include socket option is in force, the first
1136 * byte of the user data is the logical value of the Q Bit.
1137 */
1138 if (rose->qbitincl) {
1139 qbit = skb->data[0];
1140 skb_pull(skb, 1);
1141 }
1142
1143 /*
1144 * Push down the ROSE header
1145 */
1146 asmptr = skb_push(skb, ROSE_MIN_LEN);
1147
1da177e4
LT		 1148 /* Build a ROSE Network header */
1149 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1150 asmptr[1] = (rose->lci >> 0) & 0xFF;
1151 asmptr[2] = ROSE_DATA;
1152
1153 if (qbit)
1154 asmptr[0] |= ROSE_Q_BIT;
1155
1da177e4
LT		 1156 if (sk->sk_state != TCP_ESTABLISHED) {
1157 kfree_skb(skb);
1158 return -ENOTCONN;
1159 }
1160
1161#ifdef M_BIT
1162#define ROSE_PACLEN (256-ROSE_MIN_LEN)
1163 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1164 unsigned char header[ROSE_MIN_LEN];
1165 struct sk_buff *skbn;
1166 int frontlen;
1167 int lg;
1168
1169 /* Save a copy of the Header */
d626f62b 1170 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
1da177e4
LT		 1171 skb_pull(skb, ROSE_MIN_LEN);
1172
1173 frontlen = skb_headroom(skb);
1174
1175 while (skb->len > 0) {
1176 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1177 kfree_skb(skb);
1178 return err;
1179 }
1180
1181 skbn->sk = sk;
1182 skbn->free = 1;
1183 skbn->arp = 1;
1184
1185 skb_reserve(skbn, frontlen);
1186
1187 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1188
1189 /* Copy the user data */
d626f62b 1190 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
1da177e4
LT		 1191 skb_pull(skb, lg);
1192
1193 /* Duplicate the Header */
1194 skb_push(skbn, ROSE_MIN_LEN);
27d7ff46 1195 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
1da177e4
LT		 1196
1197 if (skb->len > 0)
1198 skbn->data[2] |= M_BIT;
1199
1200 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1201 }
1202
1203 skb->free = 1;
1204 kfree_skb(skb);
1205 } else {
1206 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1207 }
1208#else
1209 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1210#endif
1211
1212 rose_kick(sk);
1213
1214 return len;
1215}
1216
1217
1218static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1219 struct msghdr *msg, size_t size, int flags)
1220{
1221 struct sock *sk = sock->sk;
1222 struct rose_sock *rose = rose_sk(sk);
1223 struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
1224 size_t copied;
1225 unsigned char *asmptr;
1226 struct sk_buff *skb;
1227 int n, er, qbit;
1228
1229 /*
1230 * This works for seqpacket too. The receiver has ordered the queue for
1231 * us! We do one quick check first though
1232 */
1233 if (sk->sk_state != TCP_ESTABLISHED)
1234 return -ENOTCONN;
1235
1236 /* Now we can treat all alike */
1237 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1238 return er;
1239
1240 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1241
1242 skb_pull(skb, ROSE_MIN_LEN);
1243
1244 if (rose->qbitincl) {
1245 asmptr = skb_push(skb, 1);
1246 *asmptr = qbit;
1247 }
1248
badff6d0 1249 skb_reset_transport_header(skb);
1da177e4
LT		 1250 copied = skb->len;
1251
1252 if (copied > size) {
1253 copied = size;
1254 msg->msg_flags |= MSG_TRUNC;
1255 }
1256
1257 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1258
1259 if (srose != NULL) {
1260 srose->srose_family = AF_ROSE;
1261 srose->srose_addr = rose->dest_addr;
1262 srose->srose_call = rose->dest_call;
1263 srose->srose_ndigis = rose->dest_ndigis;
1264 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
1265 struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
1266 for (n = 0 ; n < rose->dest_ndigis ; n++)
1267 full_srose->srose_digis[n] = rose->dest_digis[n];
1268 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1269 } else {
1270 if (rose->dest_ndigis >= 1) {
1271 srose->srose_ndigis = 1;
1272 srose->srose_digi = rose->dest_digis[0];
1273 }
1274 msg->msg_namelen = sizeof(struct sockaddr_rose);
1275 }
1276 }
1277
1278 skb_free_datagram(sk, skb);
1279
1280 return copied;
1281}
1282
1283
1284static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1285{
1286 struct sock *sk = sock->sk;
1287 struct rose_sock *rose = rose_sk(sk);
1288 void __user *argp = (void __user *)arg;
1289
1290 switch (cmd) {
1291 case TIOCOUTQ: {
1292 long amount;
31e6d363
ED		 1293
1294 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
1da177e4
LT		 1295 if (amount < 0)
1296 amount = 0;
20b7d10a 1297 return put_user(amount, (unsigned int __user *) argp);
1da177e4
LT		 1298 }
1299
1300 case TIOCINQ: {
1301 struct sk_buff *skb;
1302 long amount = 0L;
1303 /* These two are safe on a single CPU system as only user tasks fiddle here */
1304 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1305 amount = skb->len;
20b7d10a 1306 return put_user(amount, (unsigned int __user *) argp);
1da177e4
LT		 1307 }
1308
1309 case SIOCGSTAMP:
20b7d10a 1310 return sock_get_timestamp(sk, (struct timeval __user *) argp);
1da177e4 1311
ae40eb1e
ED		 1312 case SIOCGSTAMPNS:
1313 return sock_get_timestampns(sk, (struct timespec __user *) argp);
1314
1da177e4
LT		 1315 case SIOCGIFADDR:
1316 case SIOCSIFADDR:
1317 case SIOCGIFDSTADDR:
1318 case SIOCSIFDSTADDR:
1319 case SIOCGIFBRDADDR:
1320 case SIOCSIFBRDADDR:
1321 case SIOCGIFNETMASK:
1322 case SIOCSIFNETMASK:
1323 case SIOCGIFMETRIC:
1324 case SIOCSIFMETRIC:
1325 return -EINVAL;
1326
1327 case SIOCADDRT:
1328 case SIOCDELRT:
1329 case SIOCRSCLRRT:
1330 if (!capable(CAP_NET_ADMIN))
1331 return -EPERM;
1332 return rose_rt_ioctl(cmd, argp);
1333
1334 case SIOCRSGCAUSE: {
1335 struct rose_cause_struct rose_cause;
1336 rose_cause.cause = rose->cause;
1337 rose_cause.diagnostic = rose->diagnostic;
1338 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1339 }
1340
1341 case SIOCRSSCAUSE: {
1342 struct rose_cause_struct rose_cause;
1343 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1344 return -EFAULT;
1345 rose->cause = rose_cause.cause;
1346 rose->diagnostic = rose_cause.diagnostic;
1347 return 0;
1348 }
1349
1350 case SIOCRSSL2CALL:
1351 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1352 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1353 ax25_listen_release(&rose_callsign, NULL);
1354 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1355 return -EFAULT;
1356 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
81dcd169
RB		 1357 return ax25_listen_register(&rose_callsign, NULL);
1358
1da177e4
LT		 1359 return 0;
1360
1361 case SIOCRSGL2CALL:
1362 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1363
1364 case SIOCRSACCEPT:
1365 if (rose->state == ROSE_STATE_5) {
1366 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1367 rose_start_idletimer(sk);
1368 rose->condition = 0x00;
1369 rose->vs = 0;
1370 rose->va = 0;
1371 rose->vr = 0;
1372 rose->vl = 0;
1373 rose->state = ROSE_STATE_3;
1374 }
1375 return 0;
1376
1377 default:
b5e5fa5e 1378 return -ENOIOCTLCMD;
1da177e4
LT		 1379 }
1380
1381 return 0;
1382}
1383
1384#ifdef CONFIG_PROC_FS
1385static void *rose_info_start(struct seq_file *seq, loff_t *pos)
95b7d924 1386 __acquires(rose_list_lock)
1da177e4 1387{
1da177e4 1388 spin_lock_bh(&rose_list_lock);
b999748a 1389 return seq_hlist_start_head(&rose_list, *pos);
1da177e4
LT		 1390}
1391
1392static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1393{
b999748a 1394 return seq_hlist_next(v, &rose_list, pos);
1da177e4 1395}
3dcf7c5e 1396
1da177e4 1397static void rose_info_stop(struct seq_file *seq, void *v)
95b7d924 1398 __releases(rose_list_lock)
1da177e4
LT		 1399{
1400 spin_unlock_bh(&rose_list_lock);
1401}
1402
1403static int rose_info_show(struct seq_file *seq, void *v)
1404{
dcf777f6 1405 char buf[11], rsbuf[11];
f75268cd 1406
1da177e4 1407 if (v == SEQ_START_TOKEN)
3dcf7c5e 1408 seq_puts(seq,
1da177e4
LT		 1409 "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");
1410
1411 else {
b999748a 1412 struct sock *s = sk_entry(v);
1da177e4
LT		 1413 struct rose_sock *rose = rose_sk(s);
1414 const char *devname, *callsign;
1415 const struct net_device *dev = rose->device;
1416
1417 if (!dev)
1418 devname = "???";
1419 else
1420 devname = dev->name;
3dcf7c5e 1421
1da177e4 1422 seq_printf(seq, "%-10s %-9s ",
dcf777f6
RB		 1423 rose2asc(rsbuf, &rose->dest_addr),
1424 ax2asc(buf, &rose->dest_call));
1da177e4
LT		 1425
1426 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1427 callsign = "??????-?";
1428 else
f75268cd 1429 callsign = ax2asc(buf, &rose->source_call);
1da177e4
LT		 1430
1431 seq_printf(seq,
1432 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
dcf777f6 1433 rose2asc(rsbuf, &rose->source_addr),
1da177e4
LT		 1434 callsign,
1435 devname,
1436 rose->lci & 0x0FFF,
1437 (rose->neighbour) ? rose->neighbour->number : 0,
1438 rose->state,
1439 rose->vs,
1440 rose->vr,
1441 rose->va,
1442 ax25_display_timer(&rose->timer) / HZ,
1443 rose->t1 / HZ,
1444 rose->t2 / HZ,
1445 rose->t3 / HZ,
1446 rose->hb / HZ,
1447 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1448 rose->idle / (60 * HZ),
31e6d363
ED		 1449 sk_wmem_alloc_get(s),
1450 sk_rmem_alloc_get(s),
1da177e4
LT		 1451 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1452 }
1453
1454 return 0;
1455}
1456
56b3d975 1457static const struct seq_operations rose_info_seqops = {
1da177e4
LT		 1458 .start = rose_info_start,
1459 .next = rose_info_next,
1460 .stop = rose_info_stop,
1461 .show = rose_info_show,
1462};
1463
1464static int rose_info_open(struct inode *inode, struct file *file)
1465{
1466 return seq_open(file, &rose_info_seqops);
1467}
1468
da7071d7 1469static const struct file_operations rose_info_fops = {
1da177e4
LT		 1470 .owner = THIS_MODULE,
1471 .open = rose_info_open,
1472 .read = seq_read,
1473 .llseek = seq_lseek,
1474 .release = seq_release,
1475};
1476#endif /* CONFIG_PROC_FS */
1477
ec1b4cf7 1478static const struct net_proto_family rose_family_ops = {
1da177e4
LT		 1479 .family = PF_ROSE,
1480 .create = rose_create,
1481 .owner = THIS_MODULE,
1482};
1483
5708e868 1484static const struct proto_ops rose_proto_ops = {
1da177e4
LT		 1485 .family = PF_ROSE,
1486 .owner = THIS_MODULE,
1487 .release = rose_release,
1488 .bind = rose_bind,
1489 .connect = rose_connect,
1490 .socketpair = sock_no_socketpair,
1491 .accept = rose_accept,
1492 .getname = rose_getname,
1493 .poll = datagram_poll,
1494 .ioctl = rose_ioctl,
1495 .listen = rose_listen,
1496 .shutdown = sock_no_shutdown,
1497 .setsockopt = rose_setsockopt,
1498 .getsockopt = rose_getsockopt,
1499 .sendmsg = rose_sendmsg,
1500 .recvmsg = rose_recvmsg,
1501 .mmap = sock_no_mmap,
1502 .sendpage = sock_no_sendpage,
1503};
1504
1505static struct notifier_block rose_dev_notifier = {
1506 .notifier_call = rose_device_event,
1507};
1508
1509static struct net_device **dev_rose;
1510
8d5cf596
RB		 1511static struct ax25_protocol rose_pid = {
1512 .pid = AX25_P_ROSE,
1513 .func = rose_route_frame
1514};
1515
a4282717
RB		 1516static struct ax25_linkfail rose_linkfail_notifier = {
1517 .func = rose_link_failed
1518};
1519
1da177e4
LT		 1520static int __init rose_proto_init(void)
1521{
1522 int i;
a83cd2cc 1523 int rc;
1da177e4 1524
a83cd2cc
AD		 1525 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1526 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1527 rc = -EINVAL;
1528 goto out;
1529 }
1530
1531 rc = proto_register(&rose_proto, 0);
1da177e4
LT		 1532 if (rc != 0)
1533 goto out;
1534
1535 rose_callsign = null_ax25_address;
1536
1b30dd35 1537 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
1da177e4
LT		 1538 if (dev_rose == NULL) {
1539 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
a83cd2cc
AD		 1540 rc = -ENOMEM;
1541 goto out_proto_unregister;
1da177e4
LT		 1542 }
1543
1da177e4
LT		 1544 for (i = 0; i < rose_ndevs; i++) {
1545 struct net_device *dev;
1546 char name[IFNAMSIZ];
1547
1548 sprintf(name, "rose%d", i);
d289d120 1549 dev = alloc_netdev(0, name, rose_setup);
1da177e4
LT		 1550 if (!dev) {
1551 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
70ff3b66 1552 rc = -ENOMEM;
1da177e4
LT		 1553 goto fail;
1554 }
70ff3b66
AD		 1555 rc = register_netdev(dev);
1556 if (rc) {
520d1b83 1557 printk(KERN_ERR "ROSE: netdevice registration failed\n");
1da177e4
LT		 1558 free_netdev(dev);
1559 goto fail;
1560 }
c773e847 1561 rose_set_lockdep_key(dev);
1da177e4
LT		 1562 dev_rose[i] = dev;
1563 }
1564
1565 sock_register(&rose_family_ops);
1566 register_netdevice_notifier(&rose_dev_notifier);
1da177e4 1567
8d5cf596 1568 ax25_register_pid(&rose_pid);
a4282717 1569 ax25_linkfail_register(&rose_linkfail_notifier);
1da177e4
LT		 1570
1571#ifdef CONFIG_SYSCTL
1572 rose_register_sysctl();
1573#endif
1574 rose_loopback_init();
1575
1576 rose_add_loopback_neigh();
1577
d4beaa66
G		 1578 proc_create("rose", S_IRUGO, init_net.proc_net, &rose_info_fops);
1579 proc_create("rose_neigh", S_IRUGO, init_net.proc_net,
1580 &rose_neigh_fops);
1581 proc_create("rose_nodes", S_IRUGO, init_net.proc_net,
1582 &rose_nodes_fops);
1583 proc_create("rose_routes", S_IRUGO, init_net.proc_net,
1584 &rose_routes_fops);
1da177e4
LT		 1585out:
1586 return rc;
1587fail:
1588 while (--i >= 0) {
1589 unregister_netdev(dev_rose[i]);
1590 free_netdev(dev_rose[i]);
1591 }
1592 kfree(dev_rose);
a83cd2cc 1593out_proto_unregister:
1da177e4 1594 proto_unregister(&rose_proto);
70ff3b66 1595 goto out;
1da177e4
LT		 1596}
1597module_init(rose_proto_init);
1598
1599module_param(rose_ndevs, int, 0);
1600MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1601
1602MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1603MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1604MODULE_LICENSE("GPL");
1605MODULE_ALIAS_NETPROTO(PF_ROSE);
1606
1607static void __exit rose_exit(void)
1608{
1609 int i;
1610
457c4cbc
EB		 1611 proc_net_remove(&init_net, "rose");
1612 proc_net_remove(&init_net, "rose_neigh");
1613 proc_net_remove(&init_net, "rose_nodes");
1614 proc_net_remove(&init_net, "rose_routes");
1da177e4
LT		 1615 rose_loopback_clear();
1616
1617 rose_rt_free();
1618
1619 ax25_protocol_release(AX25_P_ROSE);
a4282717 1620 ax25_linkfail_release(&rose_linkfail_notifier);
1da177e4
LT		 1621
1622 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1623 ax25_listen_release(&rose_callsign, NULL);
1624
1625#ifdef CONFIG_SYSCTL
1626 rose_unregister_sysctl();
1627#endif
1628 unregister_netdevice_notifier(&rose_dev_notifier);
1629
1630 sock_unregister(PF_ROSE);
1631
1632 for (i = 0; i < rose_ndevs; i++) {
1633 struct net_device *dev = dev_rose[i];
1634
1635 if (dev) {
1636 unregister_netdev(dev);
1637 free_netdev(dev);
1638 }
1639 }
1640
1641 kfree(dev_rose);
1642 proto_unregister(&rose_proto);
1643}
1644
1645module_exit(rose_exit);
kernel source for telekom puls (alcatel/mediatek)