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drivers: power: report battery voltage in AOSP compatible format
[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;
1da177e4
LT		 168
169 spin_lock_bh(&rose_list_lock);
b67bfe0d 170 sk_for_each(s, &rose_list) {
1da177e4
LT		 171 struct rose_sock *rose = rose_sk(s);
172
173 if (rose->neighbour == neigh) {
174 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
175 rose->neighbour->use--;
176 rose->neighbour = NULL;
177 }
178 }
179 spin_unlock_bh(&rose_list_lock);
180}
181
182/*
183 * Kill all bound sockets on a dropped device.
184 */
185static void rose_kill_by_device(struct net_device *dev)
186{
187 struct sock *s;
1da177e4
LT		 188
189 spin_lock_bh(&rose_list_lock);
b67bfe0d 190 sk_for_each(s, &rose_list) {
1da177e4
LT		 191 struct rose_sock *rose = rose_sk(s);
192
193 if (rose->device == dev) {
194 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
195 rose->neighbour->use--;
196 rose->device = NULL;
197 }
198 }
199 spin_unlock_bh(&rose_list_lock);
200}
201
202/*
203 * Handle device status changes.
204 */
205static int rose_device_event(struct notifier_block *this, unsigned long event,
206 void *ptr)
207{
208 struct net_device *dev = (struct net_device *)ptr;
209
721499e8 210 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 211 return NOTIFY_DONE;
212
1da177e4
LT		 213 if (event != NETDEV_DOWN)
214 return NOTIFY_DONE;
215
216 switch (dev->type) {
217 case ARPHRD_ROSE:
218 rose_kill_by_device(dev);
219 break;
220 case ARPHRD_AX25:
221 rose_link_device_down(dev);
222 rose_rt_device_down(dev);
223 break;
224 }
225
226 return NOTIFY_DONE;
227}
228
229/*
230 * Add a socket to the bound sockets list.
231 */
232static void rose_insert_socket(struct sock *sk)
233{
234
235 spin_lock_bh(&rose_list_lock);
236 sk_add_node(sk, &rose_list);
237 spin_unlock_bh(&rose_list_lock);
238}
239
240/*
241 * Find a socket that wants to accept the Call Request we just
242 * received.
243 */
244static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
245{
246 struct sock *s;
1da177e4
LT		 247
248 spin_lock_bh(&rose_list_lock);
b67bfe0d 249 sk_for_each(s, &rose_list) {
1da177e4
LT		 250 struct rose_sock *rose = rose_sk(s);
251
252 if (!rosecmp(&rose->source_addr, addr) &&
253 !ax25cmp(&rose->source_call, call) &&
254 !rose->source_ndigis && s->sk_state == TCP_LISTEN)
255 goto found;
256 }
257
b67bfe0d 258 sk_for_each(s, &rose_list) {
1da177e4
LT		 259 struct rose_sock *rose = rose_sk(s);
260
261 if (!rosecmp(&rose->source_addr, addr) &&
262 !ax25cmp(&rose->source_call, &null_ax25_address) &&
263 s->sk_state == TCP_LISTEN)
264 goto found;
265 }
266 s = NULL;
267found:
268 spin_unlock_bh(&rose_list_lock);
269 return s;
270}
271
272/*
273 * Find a connected ROSE socket given my LCI and device.
274 */
275struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
276{
277 struct sock *s;
1da177e4
LT		 278
279 spin_lock_bh(&rose_list_lock);
b67bfe0d 280 sk_for_each(s, &rose_list) {
1da177e4
LT		 281 struct rose_sock *rose = rose_sk(s);
282
283 if (rose->lci == lci && rose->neighbour == neigh)
284 goto found;
285 }
286 s = NULL;
287found:
288 spin_unlock_bh(&rose_list_lock);
289 return s;
290}
291
292/*
293 * Find a unique LCI for a given device.
294 */
295unsigned int rose_new_lci(struct rose_neigh *neigh)
296{
297 int lci;
298
299 if (neigh->dce_mode) {
300 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
301 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
302 return lci;
303 } else {
304 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
305 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
306 return lci;
307 }
308
309 return 0;
310}
311
312/*
313 * Deferred destroy.
314 */
315void rose_destroy_socket(struct sock *);
316
317/*
318 * Handler for deferred kills.
319 */
320static void rose_destroy_timer(unsigned long data)
321{
322 rose_destroy_socket((struct sock *)data);
323}
324
325/*
326 * This is called from user mode and the timers. Thus it protects itself
327 * against interrupt users but doesn't worry about being called during
328 * work. Once it is removed from the queue no interrupt or bottom half
329 * will touch it and we are (fairly 8-) ) safe.
330 */
331void rose_destroy_socket(struct sock *sk)
332{
333 struct sk_buff *skb;
334
335 rose_remove_socket(sk);
336 rose_stop_heartbeat(sk);
337 rose_stop_idletimer(sk);
338 rose_stop_timer(sk);
339
340 rose_clear_queues(sk); /* Flush the queues */
341
342 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
343 if (skb->sk != sk) { /* A pending connection */
344 /* Queue the unaccepted socket for death */
345 sock_set_flag(skb->sk, SOCK_DEAD);
346 rose_start_heartbeat(skb->sk);
347 rose_sk(skb->sk)->state = ROSE_STATE_0;
348 }
349
350 kfree_skb(skb);
351 }
352
c564039f 353 if (sk_has_allocations(sk)) {
1da177e4 354 /* Defer: outstanding buffers */
b24b8a24
PE		 355 setup_timer(&sk->sk_timer, rose_destroy_timer,
356 (unsigned long)sk);
1da177e4 357 sk->sk_timer.expires = jiffies + 10 * HZ;
1da177e4
LT		 358 add_timer(&sk->sk_timer);
359 } else
360 sock_put(sk);
361}
362
363/*
364 * Handling for system calls applied via the various interfaces to a
365 * ROSE socket object.
366 */
367
368static int rose_setsockopt(struct socket *sock, int level, int optname,
b7058842 369 char __user *optval, unsigned int optlen)
1da177e4
LT		 370{
371 struct sock *sk = sock->sk;
372 struct rose_sock *rose = rose_sk(sk);
373 int opt;
374
375 if (level != SOL_ROSE)
376 return -ENOPROTOOPT;
377
378 if (optlen < sizeof(int))
379 return -EINVAL;
380
381 if (get_user(opt, (int __user *)optval))
382 return -EFAULT;
383
384 switch (optname) {
385 case ROSE_DEFER:
386 rose->defer = opt ? 1 : 0;
387 return 0;
388
389 case ROSE_T1:
390 if (opt < 1)
391 return -EINVAL;
392 rose->t1 = opt * HZ;
393 return 0;
394
395 case ROSE_T2:
396 if (opt < 1)
397 return -EINVAL;
398 rose->t2 = opt * HZ;
399 return 0;
400
401 case ROSE_T3:
402 if (opt < 1)
403 return -EINVAL;
404 rose->t3 = opt * HZ;
405 return 0;
406
407 case ROSE_HOLDBACK:
408 if (opt < 1)
409 return -EINVAL;
410 rose->hb = opt * HZ;
411 return 0;
412
413 case ROSE_IDLE:
414 if (opt < 0)
415 return -EINVAL;
416 rose->idle = opt * 60 * HZ;
417 return 0;
418
419 case ROSE_QBITINCL:
420 rose->qbitincl = opt ? 1 : 0;
421 return 0;
422
423 default:
424 return -ENOPROTOOPT;
425 }
426}
427
428static int rose_getsockopt(struct socket *sock, int level, int optname,
429 char __user *optval, int __user *optlen)
430{
431 struct sock *sk = sock->sk;
432 struct rose_sock *rose = rose_sk(sk);
433 int val = 0;
434 int len;
435
436 if (level != SOL_ROSE)
437 return -ENOPROTOOPT;
438
439 if (get_user(len, optlen))
440 return -EFAULT;
441
442 if (len < 0)
443 return -EINVAL;
444
445 switch (optname) {
446 case ROSE_DEFER:
447 val = rose->defer;
448 break;
449
450 case ROSE_T1:
451 val = rose->t1 / HZ;
452 break;
453
454 case ROSE_T2:
455 val = rose->t2 / HZ;
456 break;
457
458 case ROSE_T3:
459 val = rose->t3 / HZ;
460 break;
461
462 case ROSE_HOLDBACK:
463 val = rose->hb / HZ;
464 break;
465
466 case ROSE_IDLE:
467 val = rose->idle / (60 * HZ);
468 break;
469
470 case ROSE_QBITINCL:
471 val = rose->qbitincl;
472 break;
473
474 default:
475 return -ENOPROTOOPT;
476 }
477
478 len = min_t(unsigned int, len, sizeof(int));
479
480 if (put_user(len, optlen))
481 return -EFAULT;
482
483 return copy_to_user(optval, &val, len) ? -EFAULT : 0;
484}
485
486static int rose_listen(struct socket *sock, int backlog)
487{
488 struct sock *sk = sock->sk;
489
490 if (sk->sk_state != TCP_LISTEN) {
491 struct rose_sock *rose = rose_sk(sk);
492
493 rose->dest_ndigis = 0;
494 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
495 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
496 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
497 sk->sk_max_ack_backlog = backlog;
498 sk->sk_state = TCP_LISTEN;
499 return 0;
500 }
501
502 return -EOPNOTSUPP;
503}
504
505static struct proto rose_proto = {
506 .name = "ROSE",
507 .owner = THIS_MODULE,
508 .obj_size = sizeof(struct rose_sock),
509};
510
3f378b68
EP		 511static int rose_create(struct net *net, struct socket *sock, int protocol,
512 int kern)
1da177e4
LT		 513{
514 struct sock *sk;
515 struct rose_sock *rose;
516
09ad9bc7 517 if (!net_eq(net, &init_net))
1b8d7ae4
EB		 518 return -EAFNOSUPPORT;
519
1da177e4
LT		 520 if (sock->type != SOCK_SEQPACKET || protocol != 0)
521 return -ESOCKTNOSUPPORT;
522
6257ff21
PE		 523 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
524 if (sk == NULL)
1da177e4
LT		 525 return -ENOMEM;
526
527 rose = rose_sk(sk);
528
529 sock_init_data(sock, sk);
530
531 skb_queue_head_init(&rose->ack_queue);
532#ifdef M_BIT
533 skb_queue_head_init(&rose->frag_queue);
534 rose->fraglen = 0;
535#endif
536
537 sock->ops = &rose_proto_ops;
538 sk->sk_protocol = protocol;
539
540 init_timer(&rose->timer);
541 init_timer(&rose->idletimer);
542
82e84249
RB		 543 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
544 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
545 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
546 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
547 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
1da177e4
LT		 548
549 rose->state = ROSE_STATE_0;
550
551 return 0;
552}
553
554static struct sock *rose_make_new(struct sock *osk)
555{
556 struct sock *sk;
557 struct rose_sock *rose, *orose;
558
559 if (osk->sk_type != SOCK_SEQPACKET)
560 return NULL;
561
3b1e0a65 562 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto);
6257ff21 563 if (sk == NULL)
1da177e4
LT		 564 return NULL;
565
566 rose = rose_sk(sk);
567
568 sock_init_data(NULL, sk);
569
570 skb_queue_head_init(&rose->ack_queue);
571#ifdef M_BIT
572 skb_queue_head_init(&rose->frag_queue);
573 rose->fraglen = 0;
574#endif
575
576 sk->sk_type = osk->sk_type;
1da177e4
LT		 577 sk->sk_priority = osk->sk_priority;
578 sk->sk_protocol = osk->sk_protocol;
579 sk->sk_rcvbuf = osk->sk_rcvbuf;
580 sk->sk_sndbuf = osk->sk_sndbuf;
581 sk->sk_state = TCP_ESTABLISHED;
53b924b3 582 sock_copy_flags(sk, osk);
1da177e4
LT		 583
584 init_timer(&rose->timer);
585 init_timer(&rose->idletimer);
586
587 orose = rose_sk(osk);
588 rose->t1 = orose->t1;
589 rose->t2 = orose->t2;
590 rose->t3 = orose->t3;
591 rose->hb = orose->hb;
592 rose->idle = orose->idle;
593 rose->defer = orose->defer;
594 rose->device = orose->device;
595 rose->qbitincl = orose->qbitincl;
596
597 return sk;
598}
599
600static int rose_release(struct socket *sock)
601{
602 struct sock *sk = sock->sk;
603 struct rose_sock *rose;
604
605 if (sk == NULL) return 0;
606
4965291a
JP		 607 sock_hold(sk);
608 sock_orphan(sk);
609 lock_sock(sk);
1da177e4
LT		 610 rose = rose_sk(sk);
611
612 switch (rose->state) {
613 case ROSE_STATE_0:
4965291a 614 release_sock(sk);
1da177e4 615 rose_disconnect(sk, 0, -1, -1);
4965291a 616 lock_sock(sk);
1da177e4
LT		 617 rose_destroy_socket(sk);
618 break;
619
620 case ROSE_STATE_2:
621 rose->neighbour->use--;
4965291a 622 release_sock(sk);
1da177e4 623 rose_disconnect(sk, 0, -1, -1);
4965291a 624 lock_sock(sk);
1da177e4
LT		 625 rose_destroy_socket(sk);
626 break;
627
628 case ROSE_STATE_1:
629 case ROSE_STATE_3:
630 case ROSE_STATE_4:
631 case ROSE_STATE_5:
632 rose_clear_queues(sk);
633 rose_stop_idletimer(sk);
634 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
635 rose_start_t3timer(sk);
636 rose->state = ROSE_STATE_2;
637 sk->sk_state = TCP_CLOSE;
638 sk->sk_shutdown |= SEND_SHUTDOWN;
639 sk->sk_state_change(sk);
640 sock_set_flag(sk, SOCK_DEAD);
641 sock_set_flag(sk, SOCK_DESTROY);
642 break;
643
644 default:
645 break;
646 }
647
648 sock->sk = NULL;
4965291a
JP		 649 release_sock(sk);
650 sock_put(sk);
1da177e4
LT		 651
652 return 0;
653}
654
655static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
656{
657 struct sock *sk = sock->sk;
658 struct rose_sock *rose = rose_sk(sk);
659 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
660 struct net_device *dev;
01d7dd0e
RB		 661 ax25_address *source;
662 ax25_uid_assoc *user;
1da177e4
LT		 663 int n;
664
665 if (!sock_flag(sk, SOCK_ZAPPED))
666 return -EINVAL;
667
668 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
669 return -EINVAL;
670
671 if (addr->srose_family != AF_ROSE)
672 return -EINVAL;
673
674 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
675 return -EINVAL;
676
9828e6e6 677 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
1da177e4
LT		 678 return -EINVAL;
679
8849b720 680 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL)
1da177e4 681 return -EADDRNOTAVAIL;
1da177e4
LT		 682
683 source = &addr->srose_call;
684
c2a2b8d3 685 user = ax25_findbyuid(current_euid());
01d7dd0e
RB		 686 if (user) {
687 rose->source_call = user->call;
688 ax25_uid_put(user);
689 } else {
1da177e4
LT		 690 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
691 return -EACCES;
01d7dd0e 692 rose->source_call = *source;
1da177e4
LT		 693 }
694
695 rose->source_addr = addr->srose_addr;
1da177e4
LT		 696 rose->device = dev;
697 rose->source_ndigis = addr->srose_ndigis;
698
699 if (addr_len == sizeof(struct full_sockaddr_rose)) {
700 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
701 for (n = 0 ; n < addr->srose_ndigis ; n++)
702 rose->source_digis[n] = full_addr->srose_digis[n];
703 } else {
704 if (rose->source_ndigis == 1) {
705 rose->source_digis[0] = addr->srose_digi;
706 }
707 }
708
709 rose_insert_socket(sk);
710
711 sock_reset_flag(sk, SOCK_ZAPPED);
8849b720 712
1da177e4
LT		 713 return 0;
714}
715
716static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
717{
718 struct sock *sk = sock->sk;
719 struct rose_sock *rose = rose_sk(sk);
720 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
721 unsigned char cause, diagnostic;
1da177e4 722 struct net_device *dev;
01d7dd0e 723 ax25_uid_assoc *user;
2536b94a 724 int n, err = 0;
1da177e4
LT		 725
726 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
727 return -EINVAL;
728
729 if (addr->srose_family != AF_ROSE)
730 return -EINVAL;
731
732 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
733 return -EINVAL;
734
9828e6e6 735 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
1da177e4
LT		 736 return -EINVAL;
737
738 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
739 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
740 return -EINVAL;
741
2536b94a
RB		 742 lock_sock(sk);
743
744 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
745 /* Connect completed during a ERESTARTSYS event */
746 sock->state = SS_CONNECTED;
747 goto out_release;
748 }
749
750 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
751 sock->state = SS_UNCONNECTED;
752 err = -ECONNREFUSED;
753 goto out_release;
754 }
755
756 if (sk->sk_state == TCP_ESTABLISHED) {
757 /* No reconnect on a seqpacket socket */
758 err = -EISCONN;
759 goto out_release;
760 }
761
762 sk->sk_state = TCP_CLOSE;
763 sock->state = SS_UNCONNECTED;
764
1da177e4 765 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
fe2c802a 766 &diagnostic, 0);
43837b1e
BP		 767 if (!rose->neighbour) {
768 err = -ENETUNREACH;
769 goto out_release;
770 }
1da177e4
LT		 771
772 rose->lci = rose_new_lci(rose->neighbour);
2536b94a
RB		 773 if (!rose->lci) {
774 err = -ENETUNREACH;
775 goto out_release;
776 }
1da177e4
LT		 777
778 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
779 sock_reset_flag(sk, SOCK_ZAPPED);
780
2536b94a
RB		 781 if ((dev = rose_dev_first()) == NULL) {
782 err = -ENETUNREACH;
783 goto out_release;
784 }
1da177e4 785
c2a2b8d3 786 user = ax25_findbyuid(current_euid());
2536b94a
RB		 787 if (!user) {
788 err = -EINVAL;
789 goto out_release;
790 }
1da177e4
LT		 791
792 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
01d7dd0e 793 rose->source_call = user->call;
1da177e4 794 rose->device = dev;
01d7dd0e 795 ax25_uid_put(user);
1da177e4
LT		 796
797 rose_insert_socket(sk); /* Finish the bind */
798 }
1da177e4
LT		 799 rose->dest_addr = addr->srose_addr;
800 rose->dest_call = addr->srose_call;
801 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
802 rose->dest_ndigis = addr->srose_ndigis;
803
804 if (addr_len == sizeof(struct full_sockaddr_rose)) {
805 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
806 for (n = 0 ; n < addr->srose_ndigis ; n++)
807 rose->dest_digis[n] = full_addr->srose_digis[n];
808 } else {
809 if (rose->dest_ndigis == 1) {
810 rose->dest_digis[0] = addr->srose_digi;
811 }
812 }
813
814 /* Move to connecting socket, start sending Connect Requests */
815 sock->state = SS_CONNECTING;
816 sk->sk_state = TCP_SYN_SENT;
817
818 rose->state = ROSE_STATE_1;
819
820 rose->neighbour->use++;
821
822 rose_write_internal(sk, ROSE_CALL_REQUEST);
823 rose_start_heartbeat(sk);
824 rose_start_t1timer(sk);
825
826 /* Now the loop */
2536b94a
RB		 827 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
828 err = -EINPROGRESS;
829 goto out_release;
830 }
1da177e4
LT		 831
832 /*
833 * A Connect Ack with Choke or timeout or failed routing will go to
834 * closed.
835 */
836 if (sk->sk_state == TCP_SYN_SENT) {
75606dc6 837 DEFINE_WAIT(wait);
1da177e4 838
1da177e4 839 for (;;) {
aa395145 840 prepare_to_wait(sk_sleep(sk), &wait,
6140efb5 841 TASK_INTERRUPTIBLE);
1da177e4
LT		 842 if (sk->sk_state != TCP_SYN_SENT)
843 break;
75606dc6
RB		 844 if (!signal_pending(current)) {
845 release_sock(sk);
1da177e4 846 schedule();
2536b94a 847 lock_sock(sk);
1da177e4
LT		 848 continue;
849 }
75606dc6
RB		 850 err = -ERESTARTSYS;
851 break;
1da177e4 852 }
aa395145 853 finish_wait(sk_sleep(sk), &wait);
75606dc6
RB		 854
855 if (err)
856 goto out_release;
1da177e4
LT		 857 }
858
859 if (sk->sk_state != TCP_ESTABLISHED) {
860 sock->state = SS_UNCONNECTED;
2536b94a
RB		 861 err = sock_error(sk); /* Always set at this point */
862 goto out_release;
1da177e4
LT		 863 }
864
865 sock->state = SS_CONNECTED;
866
2536b94a
RB		 867out_release:
868 release_sock(sk);
869
870 return err;
1da177e4
LT		 871}
872
873static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
874{
1da177e4
LT		 875 struct sk_buff *skb;
876 struct sock *newsk;
75606dc6 877 DEFINE_WAIT(wait);
1da177e4
LT		 878 struct sock *sk;
879 int err = 0;
880
881 if ((sk = sock->sk) == NULL)
882 return -EINVAL;
883
884 lock_sock(sk);
885 if (sk->sk_type != SOCK_SEQPACKET) {
886 err = -EOPNOTSUPP;
75606dc6 887 goto out_release;
1da177e4
LT		 888 }
889
890 if (sk->sk_state != TCP_LISTEN) {
891 err = -EINVAL;
75606dc6 892 goto out_release;
1da177e4
LT		 893 }
894
895 /*
896 * The write queue this time is holding sockets ready to use
897 * hooked into the SABM we saved
898 */
1da177e4 899 for (;;) {
aa395145 900 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
75606dc6 901
1da177e4
LT		 902 skb = skb_dequeue(&sk->sk_receive_queue);
903 if (skb)
904 break;
905
1da177e4 906 if (flags & O_NONBLOCK) {
75606dc6
RB		 907 err = -EWOULDBLOCK;
908 break;
1da177e4 909 }
75606dc6
RB		 910 if (!signal_pending(current)) {
911 release_sock(sk);
1da177e4
LT		 912 schedule();
913 lock_sock(sk);
914 continue;
915 }
75606dc6
RB		 916 err = -ERESTARTSYS;
917 break;
1da177e4 918 }
aa395145 919 finish_wait(sk_sleep(sk), &wait);
75606dc6
RB		 920 if (err)
921 goto out_release;
1da177e4
LT		 922
923 newsk = skb->sk;
44ccff1f 924 sock_graft(newsk, newsock);
1da177e4
LT		 925
926 /* Now attach up the new socket */
927 skb->sk = NULL;
928 kfree_skb(skb);
929 sk->sk_ack_backlog--;
1da177e4 930
75606dc6 931out_release:
1da177e4
LT		 932 release_sock(sk);
933
934 return err;
935}
936
937static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
938 int *uaddr_len, int peer)
939{
940 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
941 struct sock *sk = sock->sk;
942 struct rose_sock *rose = rose_sk(sk);
943 int n;
944
17ac2e9c 945 memset(srose, 0, sizeof(*srose));
1da177e4
LT		 946 if (peer != 0) {
947 if (sk->sk_state != TCP_ESTABLISHED)
948 return -ENOTCONN;
949 srose->srose_family = AF_ROSE;
950 srose->srose_addr = rose->dest_addr;
951 srose->srose_call = rose->dest_call;
952 srose->srose_ndigis = rose->dest_ndigis;
953 for (n = 0; n < rose->dest_ndigis; n++)
954 srose->srose_digis[n] = rose->dest_digis[n];
955 } else {
956 srose->srose_family = AF_ROSE;
957 srose->srose_addr = rose->source_addr;
958 srose->srose_call = rose->source_call;
959 srose->srose_ndigis = rose->source_ndigis;
960 for (n = 0; n < rose->source_ndigis; n++)
961 srose->srose_digis[n] = rose->source_digis[n];
962 }
963
964 *uaddr_len = sizeof(struct full_sockaddr_rose);
965 return 0;
966}
967
968int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
969{
970 struct sock *sk;
971 struct sock *make;
972 struct rose_sock *make_rose;
973 struct rose_facilities_struct facilities;
e0bccd31 974 int n;
1da177e4
LT		 975
976 skb->sk = NULL; /* Initially we don't know who it's for */
977
978 /*
979 * skb->data points to the rose frame start
980 */
981 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
982
e0bccd31
BH		 983 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF,
984 skb->len - ROSE_CALL_REQ_FACILITIES_OFF,
985 &facilities)) {
1da177e4
LT		 986 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
987 return 0;
988 }
989
990 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
991
992 /*
993 * We can't accept the Call Request.
994 */
995 if (sk == NULL || sk_acceptq_is_full(sk) ||
996 (make = rose_make_new(sk)) == NULL) {
997 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
998 return 0;
999 }
1000
1001 skb->sk = make;
1002 make->sk_state = TCP_ESTABLISHED;
1003 make_rose = rose_sk(make);
1004
1005 make_rose->lci = lci;
1006 make_rose->dest_addr = facilities.dest_addr;
1007 make_rose->dest_call = facilities.dest_call;
1008 make_rose->dest_ndigis = facilities.dest_ndigis;
1009 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1010 make_rose->dest_digis[n] = facilities.dest_digis[n];
1011 make_rose->source_addr = facilities.source_addr;
1012 make_rose->source_call = facilities.source_call;
1013 make_rose->source_ndigis = facilities.source_ndigis;
1014 for (n = 0 ; n < facilities.source_ndigis ; n++)
1015 make_rose->source_digis[n]= facilities.source_digis[n];
1016 make_rose->neighbour = neigh;
1017 make_rose->device = dev;
1018 make_rose->facilities = facilities;
1019
1020 make_rose->neighbour->use++;
1021
1022 if (rose_sk(sk)->defer) {
1023 make_rose->state = ROSE_STATE_5;
1024 } else {
1025 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1026 make_rose->state = ROSE_STATE_3;
1027 rose_start_idletimer(make);
1028 }
1029
1030 make_rose->condition = 0x00;
1031 make_rose->vs = 0;
1032 make_rose->va = 0;
1033 make_rose->vr = 0;
1034 make_rose->vl = 0;
1035 sk->sk_ack_backlog++;
1036
1037 rose_insert_socket(make);
1038
1039 skb_queue_head(&sk->sk_receive_queue, skb);
1040
1041 rose_start_heartbeat(make);
1042
1043 if (!sock_flag(sk, SOCK_DEAD))
1044 sk->sk_data_ready(sk, skb->len);
1045
1046 return 1;
1047}
1048
1049static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
1050 struct msghdr *msg, size_t len)
1051{
1052 struct sock *sk = sock->sk;
1053 struct rose_sock *rose = rose_sk(sk);
1054 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1055 int err;
1056 struct full_sockaddr_rose srose;
1057 struct sk_buff *skb;
1058 unsigned char *asmptr;
1059 int n, size, qbit = 0;
1060
1061 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1062 return -EINVAL;
1063
1064 if (sock_flag(sk, SOCK_ZAPPED))
1065 return -EADDRNOTAVAIL;
1066
1067 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1068 send_sig(SIGPIPE, current, 0);
1069 return -EPIPE;
1070 }
1071
1072 if (rose->neighbour == NULL || rose->device == NULL)
1073 return -ENETUNREACH;
1074
1075 if (usrose != NULL) {
1076 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1077 return -EINVAL;
1078 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1079 memcpy(&srose, usrose, msg->msg_namelen);
1080 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1081 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1082 return -EISCONN;
1083 if (srose.srose_ndigis != rose->dest_ndigis)
1084 return -EISCONN;
1085 if (srose.srose_ndigis == rose->dest_ndigis) {
1086 for (n = 0 ; n < srose.srose_ndigis ; n++)
1087 if (ax25cmp(&rose->dest_digis[n],
1088 &srose.srose_digis[n]))
1089 return -EISCONN;
1090 }
1091 if (srose.srose_family != AF_ROSE)
1092 return -EINVAL;
1093 } else {
1094 if (sk->sk_state != TCP_ESTABLISHED)
1095 return -ENOTCONN;
1096
1097 srose.srose_family = AF_ROSE;
1098 srose.srose_addr = rose->dest_addr;
1099 srose.srose_call = rose->dest_call;
1100 srose.srose_ndigis = rose->dest_ndigis;
1101 for (n = 0 ; n < rose->dest_ndigis ; n++)
1102 srose.srose_digis[n] = rose->dest_digis[n];
1103 }
1104
1da177e4 1105 /* Build a packet */
83e0bbcb
AC		 1106 /* Sanity check the packet size */
1107 if (len > 65535)
1108 return -EMSGSIZE;
1109
1da177e4
LT		 1110 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1111
1112 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1113 return err;
1114
1115 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1116
1117 /*
1118 * Put the data on the end
1119 */
1da177e4 1120
eeeb0374
ACM		 1121 skb_reset_transport_header(skb);
1122 skb_put(skb, len);
1da177e4 1123
eeeb0374 1124 err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1da177e4
LT		 1125 if (err) {
1126 kfree_skb(skb);
1127 return err;
1128 }
1129
1130 /*
1131 * If the Q BIT Include socket option is in force, the first
1132 * byte of the user data is the logical value of the Q Bit.
1133 */
1134 if (rose->qbitincl) {
1135 qbit = skb->data[0];
1136 skb_pull(skb, 1);
1137 }
1138
1139 /*
1140 * Push down the ROSE header
1141 */
1142 asmptr = skb_push(skb, ROSE_MIN_LEN);
1143
1da177e4
LT		 1144 /* Build a ROSE Network header */
1145 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1146 asmptr[1] = (rose->lci >> 0) & 0xFF;
1147 asmptr[2] = ROSE_DATA;
1148
1149 if (qbit)
1150 asmptr[0] |= ROSE_Q_BIT;
1151
1da177e4
LT		 1152 if (sk->sk_state != TCP_ESTABLISHED) {
1153 kfree_skb(skb);
1154 return -ENOTCONN;
1155 }
1156
1157#ifdef M_BIT
1158#define ROSE_PACLEN (256-ROSE_MIN_LEN)
1159 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1160 unsigned char header[ROSE_MIN_LEN];
1161 struct sk_buff *skbn;
1162 int frontlen;
1163 int lg;
1164
1165 /* Save a copy of the Header */
d626f62b 1166 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
1da177e4
LT		 1167 skb_pull(skb, ROSE_MIN_LEN);
1168
1169 frontlen = skb_headroom(skb);
1170
1171 while (skb->len > 0) {
1172 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1173 kfree_skb(skb);
1174 return err;
1175 }
1176
1177 skbn->sk = sk;
1178 skbn->free = 1;
1179 skbn->arp = 1;
1180
1181 skb_reserve(skbn, frontlen);
1182
1183 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1184
1185 /* Copy the user data */
d626f62b 1186 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
1da177e4
LT		 1187 skb_pull(skb, lg);
1188
1189 /* Duplicate the Header */
1190 skb_push(skbn, ROSE_MIN_LEN);
27d7ff46 1191 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
1da177e4
LT		 1192
1193 if (skb->len > 0)
1194 skbn->data[2] |= M_BIT;
1195
1196 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1197 }
1198
1199 skb->free = 1;
1200 kfree_skb(skb);
1201 } else {
1202 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1203 }
1204#else
1205 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1206#endif
1207
1208 rose_kick(sk);
1209
1210 return len;
1211}
1212
1213
1214static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1215 struct msghdr *msg, size_t size, int flags)
1216{
1217 struct sock *sk = sock->sk;
1218 struct rose_sock *rose = rose_sk(sk);
1da177e4
LT		 1219 size_t copied;
1220 unsigned char *asmptr;
1221 struct sk_buff *skb;
1222 int n, er, qbit;
1223
1224 /*
1225 * This works for seqpacket too. The receiver has ordered the queue for
1226 * us! We do one quick check first though
1227 */
1228 if (sk->sk_state != TCP_ESTABLISHED)
1229 return -ENOTCONN;
1230
1231 /* Now we can treat all alike */
1232 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1233 return er;
1234
1235 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1236
1237 skb_pull(skb, ROSE_MIN_LEN);
1238
1239 if (rose->qbitincl) {
1240 asmptr = skb_push(skb, 1);
1241 *asmptr = qbit;
1242 }
1243
badff6d0 1244 skb_reset_transport_header(skb);
1da177e4
LT		 1245 copied = skb->len;
1246
1247 if (copied > size) {
1248 copied = size;
1249 msg->msg_flags |= MSG_TRUNC;
1250 }
1251
1252 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1253
2f73d7fd
HFS		 1254 if (msg->msg_name) {
1255 struct sockaddr_rose *srose;
05df3bfb 1256 struct full_sockaddr_rose *full_srose = msg->msg_name;
2f73d7fd
HFS		 1257
1258 memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose));
1259 srose = msg->msg_name;
1da177e4
LT		 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;
05df3bfb
FW		 1264 for (n = 0 ; n < rose->dest_ndigis ; n++)
1265 full_srose->srose_digis[n] = rose->dest_digis[n];
1266 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1da177e4
LT		 1267 }
1268
1269 skb_free_datagram(sk, skb);
1270
1271 return copied;
1272}
1273
1274
1275static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1276{
1277 struct sock *sk = sock->sk;
1278 struct rose_sock *rose = rose_sk(sk);
1279 void __user *argp = (void __user *)arg;
1280
1281 switch (cmd) {
1282 case TIOCOUTQ: {
1283 long amount;
31e6d363
ED		 1284
1285 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
1da177e4
LT		 1286 if (amount < 0)
1287 amount = 0;
20b7d10a 1288 return put_user(amount, (unsigned int __user *) argp);
1da177e4
LT		 1289 }
1290
1291 case TIOCINQ: {
1292 struct sk_buff *skb;
1293 long amount = 0L;
1294 /* These two are safe on a single CPU system as only user tasks fiddle here */
1295 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1296 amount = skb->len;
20b7d10a 1297 return put_user(amount, (unsigned int __user *) argp);
1da177e4
LT		 1298 }
1299
1300 case SIOCGSTAMP:
20b7d10a 1301 return sock_get_timestamp(sk, (struct timeval __user *) argp);
1da177e4 1302
ae40eb1e
ED		 1303 case SIOCGSTAMPNS:
1304 return sock_get_timestampns(sk, (struct timespec __user *) argp);
1305
1da177e4
LT		 1306 case SIOCGIFADDR:
1307 case SIOCSIFADDR:
1308 case SIOCGIFDSTADDR:
1309 case SIOCSIFDSTADDR:
1310 case SIOCGIFBRDADDR:
1311 case SIOCSIFBRDADDR:
1312 case SIOCGIFNETMASK:
1313 case SIOCSIFNETMASK:
1314 case SIOCGIFMETRIC:
1315 case SIOCSIFMETRIC:
1316 return -EINVAL;
1317
1318 case SIOCADDRT:
1319 case SIOCDELRT:
1320 case SIOCRSCLRRT:
1321 if (!capable(CAP_NET_ADMIN))
1322 return -EPERM;
1323 return rose_rt_ioctl(cmd, argp);
1324
1325 case SIOCRSGCAUSE: {
1326 struct rose_cause_struct rose_cause;
1327 rose_cause.cause = rose->cause;
1328 rose_cause.diagnostic = rose->diagnostic;
1329 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1330 }
1331
1332 case SIOCRSSCAUSE: {
1333 struct rose_cause_struct rose_cause;
1334 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1335 return -EFAULT;
1336 rose->cause = rose_cause.cause;
1337 rose->diagnostic = rose_cause.diagnostic;
1338 return 0;
1339 }
1340
1341 case SIOCRSSL2CALL:
1342 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1343 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1344 ax25_listen_release(&rose_callsign, NULL);
1345 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1346 return -EFAULT;
1347 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
81dcd169
RB		 1348 return ax25_listen_register(&rose_callsign, NULL);
1349
1da177e4
LT		 1350 return 0;
1351
1352 case SIOCRSGL2CALL:
1353 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1354
1355 case SIOCRSACCEPT:
1356 if (rose->state == ROSE_STATE_5) {
1357 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1358 rose_start_idletimer(sk);
1359 rose->condition = 0x00;
1360 rose->vs = 0;
1361 rose->va = 0;
1362 rose->vr = 0;
1363 rose->vl = 0;
1364 rose->state = ROSE_STATE_3;
1365 }
1366 return 0;
1367
1368 default:
b5e5fa5e 1369 return -ENOIOCTLCMD;
1da177e4
LT		 1370 }
1371
1372 return 0;
1373}
1374
1375#ifdef CONFIG_PROC_FS
1376static void *rose_info_start(struct seq_file *seq, loff_t *pos)
95b7d924 1377 __acquires(rose_list_lock)
1da177e4 1378{
1da177e4 1379 spin_lock_bh(&rose_list_lock);
b999748a 1380 return seq_hlist_start_head(&rose_list, *pos);
1da177e4
LT		 1381}
1382
1383static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1384{
b999748a 1385 return seq_hlist_next(v, &rose_list, pos);
1da177e4 1386}
3dcf7c5e 1387
1da177e4 1388static void rose_info_stop(struct seq_file *seq, void *v)
95b7d924 1389 __releases(rose_list_lock)
1da177e4
LT		 1390{
1391 spin_unlock_bh(&rose_list_lock);
1392}
1393
1394static int rose_info_show(struct seq_file *seq, void *v)
1395{
dcf777f6 1396 char buf[11], rsbuf[11];
f75268cd 1397
1da177e4 1398 if (v == SEQ_START_TOKEN)
3dcf7c5e 1399 seq_puts(seq,
1da177e4
LT		 1400 "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");
1401
1402 else {
b999748a 1403 struct sock *s = sk_entry(v);
1da177e4
LT		 1404 struct rose_sock *rose = rose_sk(s);
1405 const char *devname, *callsign;
1406 const struct net_device *dev = rose->device;
1407
1408 if (!dev)
1409 devname = "???";
1410 else
1411 devname = dev->name;
3dcf7c5e 1412
1da177e4 1413 seq_printf(seq, "%-10s %-9s ",
dcf777f6
RB		 1414 rose2asc(rsbuf, &rose->dest_addr),
1415 ax2asc(buf, &rose->dest_call));
1da177e4
LT		 1416
1417 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1418 callsign = "??????-?";
1419 else
f75268cd 1420 callsign = ax2asc(buf, &rose->source_call);
1da177e4
LT		 1421
1422 seq_printf(seq,
1423 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
dcf777f6 1424 rose2asc(rsbuf, &rose->source_addr),
1da177e4
LT		 1425 callsign,
1426 devname,
1427 rose->lci & 0x0FFF,
1428 (rose->neighbour) ? rose->neighbour->number : 0,
1429 rose->state,
1430 rose->vs,
1431 rose->vr,
1432 rose->va,
1433 ax25_display_timer(&rose->timer) / HZ,
1434 rose->t1 / HZ,
1435 rose->t2 / HZ,
1436 rose->t3 / HZ,
1437 rose->hb / HZ,
1438 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1439 rose->idle / (60 * HZ),
31e6d363
ED		 1440 sk_wmem_alloc_get(s),
1441 sk_rmem_alloc_get(s),
1da177e4
LT		 1442 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1443 }
1444
1445 return 0;
1446}
1447
56b3d975 1448static const struct seq_operations rose_info_seqops = {
1da177e4
LT		 1449 .start = rose_info_start,
1450 .next = rose_info_next,
1451 .stop = rose_info_stop,
1452 .show = rose_info_show,
1453};
1454
1455static int rose_info_open(struct inode *inode, struct file *file)
1456{
1457 return seq_open(file, &rose_info_seqops);
1458}
1459
da7071d7 1460static const struct file_operations rose_info_fops = {
1da177e4
LT		 1461 .owner = THIS_MODULE,
1462 .open = rose_info_open,
1463 .read = seq_read,
1464 .llseek = seq_lseek,
1465 .release = seq_release,
1466};
1467#endif /* CONFIG_PROC_FS */
1468
ec1b4cf7 1469static const struct net_proto_family rose_family_ops = {
1da177e4
LT		 1470 .family = PF_ROSE,
1471 .create = rose_create,
1472 .owner = THIS_MODULE,
1473};
1474
5708e868 1475static const struct proto_ops rose_proto_ops = {
1da177e4
LT		 1476 .family = PF_ROSE,
1477 .owner = THIS_MODULE,
1478 .release = rose_release,
1479 .bind = rose_bind,
1480 .connect = rose_connect,
1481 .socketpair = sock_no_socketpair,
1482 .accept = rose_accept,
1483 .getname = rose_getname,
1484 .poll = datagram_poll,
1485 .ioctl = rose_ioctl,
1486 .listen = rose_listen,
1487 .shutdown = sock_no_shutdown,
1488 .setsockopt = rose_setsockopt,
1489 .getsockopt = rose_getsockopt,
1490 .sendmsg = rose_sendmsg,
1491 .recvmsg = rose_recvmsg,
1492 .mmap = sock_no_mmap,
1493 .sendpage = sock_no_sendpage,
1494};
1495
1496static struct notifier_block rose_dev_notifier = {
1497 .notifier_call = rose_device_event,
1498};
1499
1500static struct net_device **dev_rose;
1501
8d5cf596
RB		 1502static struct ax25_protocol rose_pid = {
1503 .pid = AX25_P_ROSE,
1504 .func = rose_route_frame
1505};
1506
a4282717
RB		 1507static struct ax25_linkfail rose_linkfail_notifier = {
1508 .func = rose_link_failed
1509};
1510
1da177e4
LT		 1511static int __init rose_proto_init(void)
1512{
1513 int i;
a83cd2cc 1514 int rc;
1da177e4 1515
a83cd2cc
AD		 1516 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1517 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1518 rc = -EINVAL;
1519 goto out;
1520 }
1521
1522 rc = proto_register(&rose_proto, 0);
1da177e4
LT		 1523 if (rc != 0)
1524 goto out;
1525
1526 rose_callsign = null_ax25_address;
1527
1b30dd35 1528 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
1da177e4
LT		 1529 if (dev_rose == NULL) {
1530 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
a83cd2cc
AD		 1531 rc = -ENOMEM;
1532 goto out_proto_unregister;
1da177e4
LT		 1533 }
1534
1da177e4
LT		 1535 for (i = 0; i < rose_ndevs; i++) {
1536 struct net_device *dev;
1537 char name[IFNAMSIZ];
1538
1539 sprintf(name, "rose%d", i);
d289d120 1540 dev = alloc_netdev(0, name, rose_setup);
1da177e4
LT		 1541 if (!dev) {
1542 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
70ff3b66 1543 rc = -ENOMEM;
1da177e4
LT		 1544 goto fail;
1545 }
70ff3b66
AD		 1546 rc = register_netdev(dev);
1547 if (rc) {
520d1b83 1548 printk(KERN_ERR "ROSE: netdevice registration failed\n");
1da177e4
LT		 1549 free_netdev(dev);
1550 goto fail;
1551 }
c773e847 1552 rose_set_lockdep_key(dev);
1da177e4
LT		 1553 dev_rose[i] = dev;
1554 }
1555
1556 sock_register(&rose_family_ops);
1557 register_netdevice_notifier(&rose_dev_notifier);
1da177e4 1558
8d5cf596 1559 ax25_register_pid(&rose_pid);
a4282717 1560 ax25_linkfail_register(&rose_linkfail_notifier);
1da177e4
LT		 1561
1562#ifdef CONFIG_SYSCTL
1563 rose_register_sysctl();
1564#endif
1565 rose_loopback_init();
1566
1567 rose_add_loopback_neigh();
1568
d4beaa66
G		 1569 proc_create("rose", S_IRUGO, init_net.proc_net, &rose_info_fops);
1570 proc_create("rose_neigh", S_IRUGO, init_net.proc_net,
1571 &rose_neigh_fops);
1572 proc_create("rose_nodes", S_IRUGO, init_net.proc_net,
1573 &rose_nodes_fops);
1574 proc_create("rose_routes", S_IRUGO, init_net.proc_net,
1575 &rose_routes_fops);
1da177e4
LT		 1576out:
1577 return rc;
1578fail:
1579 while (--i >= 0) {
1580 unregister_netdev(dev_rose[i]);
1581 free_netdev(dev_rose[i]);
1582 }
1583 kfree(dev_rose);
a83cd2cc 1584out_proto_unregister:
1da177e4 1585 proto_unregister(&rose_proto);
70ff3b66 1586 goto out;
1da177e4
LT		 1587}
1588module_init(rose_proto_init);
1589
1590module_param(rose_ndevs, int, 0);
1591MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1592
1593MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1594MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1595MODULE_LICENSE("GPL");
1596MODULE_ALIAS_NETPROTO(PF_ROSE);
1597
1598static void __exit rose_exit(void)
1599{
1600 int i;
1601
ece31ffd
G		 1602 remove_proc_entry("rose", init_net.proc_net);
1603 remove_proc_entry("rose_neigh", init_net.proc_net);
1604 remove_proc_entry("rose_nodes", init_net.proc_net);
1605 remove_proc_entry("rose_routes", init_net.proc_net);
1da177e4
LT		 1606 rose_loopback_clear();
1607
1608 rose_rt_free();
1609
1610 ax25_protocol_release(AX25_P_ROSE);
a4282717 1611 ax25_linkfail_release(&rose_linkfail_notifier);
1da177e4
LT		 1612
1613 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1614 ax25_listen_release(&rose_callsign, NULL);
1615
1616#ifdef CONFIG_SYSCTL
1617 rose_unregister_sysctl();
1618#endif
1619 unregister_netdevice_notifier(&rose_dev_notifier);
1620
1621 sock_unregister(PF_ROSE);
1622
1623 for (i = 0; i < rose_ndevs; i++) {
1624 struct net_device *dev = dev_rose[i];
1625
1626 if (dev) {
1627 unregister_netdev(dev);
1628 free_netdev(dev);
1629 }
1630 }
1631
1632 kfree(dev_rose);
1633 proto_unregister(&rose_proto);
1634}
1635
1636module_exit(rose_exit);
kernel source for telekom puls (alcatel/mediatek)