Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
1da177e4 LT |
3 | * |
4 | * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk) | |
5 | * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk) | |
6 | * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net) | |
7 | * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi) | |
8 | */ | |
4fc268d2 | 9 | |
4fc268d2 | 10 | #include <linux/capability.h> |
1da177e4 LT |
11 | #include <linux/module.h> |
12 | #include <linux/moduleparam.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/errno.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/socket.h> | |
17 | #include <linux/in.h> | |
5a0e3ad6 | 18 | #include <linux/slab.h> |
1da177e4 | 19 | #include <linux/kernel.h> |
3f07c014 | 20 | #include <linux/sched/signal.h> |
1da177e4 LT |
21 | #include <linux/spinlock.h> |
22 | #include <linux/timer.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/sockios.h> | |
25 | #include <linux/net.h> | |
26 | #include <linux/stat.h> | |
457c4cbc | 27 | #include <net/net_namespace.h> |
1da177e4 LT |
28 | #include <net/ax25.h> |
29 | #include <linux/inet.h> | |
30 | #include <linux/netdevice.h> | |
31 | #include <linux/if_arp.h> | |
32 | #include <linux/skbuff.h> | |
33 | #include <net/sock.h> | |
7c0f6ba6 | 34 | #include <linux/uaccess.h> |
1da177e4 LT |
35 | #include <linux/fcntl.h> |
36 | #include <linux/termios.h> | |
37 | #include <linux/mm.h> | |
38 | #include <linux/interrupt.h> | |
39 | #include <linux/notifier.h> | |
40 | #include <net/rose.h> | |
41 | #include <linux/proc_fs.h> | |
42 | #include <linux/seq_file.h> | |
c752f073 | 43 | #include <net/tcp_states.h> |
1da177e4 LT |
44 | #include <net/ip.h> |
45 | #include <net/arp.h> | |
46 | ||
47 | static int rose_ndevs = 10; | |
48 | ||
49 | int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0; | |
50 | int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1; | |
51 | int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2; | |
52 | int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3; | |
53 | int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE; | |
54 | int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB; | |
55 | int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING; | |
56 | int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT; | |
57 | int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC; | |
58 | int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE; | |
59 | ||
60 | static HLIST_HEAD(rose_list); | |
61 | static DEFINE_SPINLOCK(rose_list_lock); | |
62 | ||
5708e868 | 63 | static const struct proto_ops rose_proto_ops; |
1da177e4 LT |
64 | |
65 | ax25_address rose_callsign; | |
66 | ||
1a33e10e CW |
67 | /* |
68 | * ROSE network devices are virtual network devices encapsulating ROSE | |
69 | * frames into AX.25 which will be sent through an AX.25 device, so form a | |
70 | * special "super class" of normal net devices; split their locks off into a | |
71 | * separate class since they always nest. | |
72 | */ | |
73 | static struct lock_class_key rose_netdev_xmit_lock_key; | |
845e0ebb | 74 | static struct lock_class_key rose_netdev_addr_lock_key; |
1a33e10e CW |
75 | |
76 | static void rose_set_lockdep_one(struct net_device *dev, | |
77 | struct netdev_queue *txq, | |
78 | void *_unused) | |
79 | { | |
80 | lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key); | |
81 | } | |
82 | ||
83 | static void rose_set_lockdep_key(struct net_device *dev) | |
84 | { | |
845e0ebb | 85 | lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key); |
1a33e10e CW |
86 | netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL); |
87 | } | |
88 | ||
1da177e4 LT |
89 | /* |
90 | * Convert a ROSE address into text. | |
91 | */ | |
dcf777f6 | 92 | char *rose2asc(char *buf, const rose_address *addr) |
1da177e4 | 93 | { |
1da177e4 LT |
94 | if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 && |
95 | addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 && | |
96 | addr->rose_addr[4] == 0x00) { | |
dcf777f6 | 97 | strcpy(buf, "*"); |
1da177e4 | 98 | } else { |
dcf777f6 | 99 | sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF, |
1da177e4 LT |
100 | addr->rose_addr[1] & 0xFF, |
101 | addr->rose_addr[2] & 0xFF, | |
102 | addr->rose_addr[3] & 0xFF, | |
103 | addr->rose_addr[4] & 0xFF); | |
104 | } | |
105 | ||
dcf777f6 | 106 | return buf; |
1da177e4 LT |
107 | } |
108 | ||
109 | /* | |
110 | * Compare two ROSE addresses, 0 == equal. | |
111 | */ | |
db957324 | 112 | int rosecmp(const rose_address *addr1, const rose_address *addr2) |
1da177e4 LT |
113 | { |
114 | int i; | |
115 | ||
116 | for (i = 0; i < 5; i++) | |
117 | if (addr1->rose_addr[i] != addr2->rose_addr[i]) | |
118 | return 1; | |
119 | ||
120 | return 0; | |
121 | } | |
122 | ||
123 | /* | |
124 | * Compare two ROSE addresses for only mask digits, 0 == equal. | |
125 | */ | |
db957324 JK |
126 | int rosecmpm(const rose_address *addr1, const rose_address *addr2, |
127 | unsigned short mask) | |
1da177e4 | 128 | { |
95b7d924 | 129 | unsigned int i, j; |
1da177e4 LT |
130 | |
131 | if (mask > 10) | |
132 | return 1; | |
133 | ||
134 | for (i = 0; i < mask; i++) { | |
135 | j = i / 2; | |
136 | ||
137 | if ((i % 2) != 0) { | |
138 | if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F)) | |
139 | return 1; | |
140 | } else { | |
141 | if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0)) | |
142 | return 1; | |
143 | } | |
144 | } | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | /* | |
150 | * Socket removal during an interrupt is now safe. | |
151 | */ | |
152 | static void rose_remove_socket(struct sock *sk) | |
153 | { | |
154 | spin_lock_bh(&rose_list_lock); | |
155 | sk_del_node_init(sk); | |
156 | spin_unlock_bh(&rose_list_lock); | |
157 | } | |
158 | ||
159 | /* | |
160 | * Kill all bound sockets on a broken link layer connection to a | |
161 | * particular neighbour. | |
162 | */ | |
163 | void rose_kill_by_neigh(struct rose_neigh *neigh) | |
164 | { | |
165 | struct sock *s; | |
1da177e4 LT |
166 | |
167 | spin_lock_bh(&rose_list_lock); | |
b67bfe0d | 168 | sk_for_each(s, &rose_list) { |
1da177e4 LT |
169 | struct rose_sock *rose = rose_sk(s); |
170 | ||
171 | if (rose->neighbour == neigh) { | |
172 | rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); | |
173 | rose->neighbour->use--; | |
174 | rose->neighbour = NULL; | |
175 | } | |
176 | } | |
177 | spin_unlock_bh(&rose_list_lock); | |
178 | } | |
179 | ||
180 | /* | |
181 | * Kill all bound sockets on a dropped device. | |
182 | */ | |
183 | static void rose_kill_by_device(struct net_device *dev) | |
184 | { | |
64b8bc7d ED |
185 | struct sock *sk, *array[16]; |
186 | struct rose_sock *rose; | |
187 | bool rescan; | |
188 | int i, cnt; | |
1da177e4 | 189 | |
64b8bc7d ED |
190 | start: |
191 | rescan = false; | |
192 | cnt = 0; | |
1da177e4 | 193 | spin_lock_bh(&rose_list_lock); |
64b8bc7d ED |
194 | sk_for_each(sk, &rose_list) { |
195 | rose = rose_sk(sk); | |
196 | if (rose->device == dev) { | |
197 | if (cnt == ARRAY_SIZE(array)) { | |
198 | rescan = true; | |
199 | break; | |
200 | } | |
201 | sock_hold(sk); | |
202 | array[cnt++] = sk; | |
203 | } | |
204 | } | |
205 | spin_unlock_bh(&rose_list_lock); | |
1da177e4 | 206 | |
64b8bc7d ED |
207 | for (i = 0; i < cnt; i++) { |
208 | sk = array[cnt]; | |
209 | rose = rose_sk(sk); | |
210 | lock_sock(sk); | |
211 | spin_lock_bh(&rose_list_lock); | |
1da177e4 | 212 | if (rose->device == dev) { |
64b8bc7d | 213 | rose_disconnect(sk, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); |
d496f784 RB |
214 | if (rose->neighbour) |
215 | rose->neighbour->use--; | |
2df91e39 | 216 | netdev_put(rose->device, &rose->dev_tracker); |
1da177e4 LT |
217 | rose->device = NULL; |
218 | } | |
64b8bc7d ED |
219 | spin_unlock_bh(&rose_list_lock); |
220 | release_sock(sk); | |
221 | sock_put(sk); | |
222 | cond_resched(); | |
1da177e4 | 223 | } |
64b8bc7d ED |
224 | if (rescan) |
225 | goto start; | |
1da177e4 LT |
226 | } |
227 | ||
228 | /* | |
229 | * Handle device status changes. | |
230 | */ | |
351638e7 JP |
231 | static int rose_device_event(struct notifier_block *this, |
232 | unsigned long event, void *ptr) | |
1da177e4 | 233 | { |
351638e7 | 234 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
1da177e4 | 235 | |
721499e8 | 236 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
237 | return NOTIFY_DONE; |
238 | ||
1da177e4 LT |
239 | if (event != NETDEV_DOWN) |
240 | return NOTIFY_DONE; | |
241 | ||
242 | switch (dev->type) { | |
243 | case ARPHRD_ROSE: | |
244 | rose_kill_by_device(dev); | |
245 | break; | |
246 | case ARPHRD_AX25: | |
247 | rose_link_device_down(dev); | |
248 | rose_rt_device_down(dev); | |
249 | break; | |
250 | } | |
251 | ||
252 | return NOTIFY_DONE; | |
253 | } | |
254 | ||
255 | /* | |
256 | * Add a socket to the bound sockets list. | |
257 | */ | |
258 | static void rose_insert_socket(struct sock *sk) | |
259 | { | |
260 | ||
261 | spin_lock_bh(&rose_list_lock); | |
262 | sk_add_node(sk, &rose_list); | |
263 | spin_unlock_bh(&rose_list_lock); | |
264 | } | |
265 | ||
266 | /* | |
267 | * Find a socket that wants to accept the Call Request we just | |
268 | * received. | |
269 | */ | |
270 | static struct sock *rose_find_listener(rose_address *addr, ax25_address *call) | |
271 | { | |
272 | struct sock *s; | |
1da177e4 LT |
273 | |
274 | spin_lock_bh(&rose_list_lock); | |
b67bfe0d | 275 | sk_for_each(s, &rose_list) { |
1da177e4 LT |
276 | struct rose_sock *rose = rose_sk(s); |
277 | ||
278 | if (!rosecmp(&rose->source_addr, addr) && | |
279 | !ax25cmp(&rose->source_call, call) && | |
280 | !rose->source_ndigis && s->sk_state == TCP_LISTEN) | |
281 | goto found; | |
282 | } | |
283 | ||
b67bfe0d | 284 | sk_for_each(s, &rose_list) { |
1da177e4 LT |
285 | struct rose_sock *rose = rose_sk(s); |
286 | ||
287 | if (!rosecmp(&rose->source_addr, addr) && | |
288 | !ax25cmp(&rose->source_call, &null_ax25_address) && | |
289 | s->sk_state == TCP_LISTEN) | |
290 | goto found; | |
291 | } | |
292 | s = NULL; | |
293 | found: | |
294 | spin_unlock_bh(&rose_list_lock); | |
295 | return s; | |
296 | } | |
297 | ||
298 | /* | |
299 | * Find a connected ROSE socket given my LCI and device. | |
300 | */ | |
301 | struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh) | |
302 | { | |
303 | struct sock *s; | |
1da177e4 LT |
304 | |
305 | spin_lock_bh(&rose_list_lock); | |
b67bfe0d | 306 | sk_for_each(s, &rose_list) { |
1da177e4 LT |
307 | struct rose_sock *rose = rose_sk(s); |
308 | ||
309 | if (rose->lci == lci && rose->neighbour == neigh) | |
310 | goto found; | |
311 | } | |
312 | s = NULL; | |
313 | found: | |
314 | spin_unlock_bh(&rose_list_lock); | |
315 | return s; | |
316 | } | |
317 | ||
318 | /* | |
319 | * Find a unique LCI for a given device. | |
320 | */ | |
321 | unsigned int rose_new_lci(struct rose_neigh *neigh) | |
322 | { | |
323 | int lci; | |
324 | ||
325 | if (neigh->dce_mode) { | |
326 | for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++) | |
327 | if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) | |
328 | return lci; | |
329 | } else { | |
330 | for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--) | |
331 | if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) | |
332 | return lci; | |
333 | } | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
338 | /* | |
339 | * Deferred destroy. | |
340 | */ | |
341 | void rose_destroy_socket(struct sock *); | |
342 | ||
343 | /* | |
344 | * Handler for deferred kills. | |
345 | */ | |
4966babd | 346 | static void rose_destroy_timer(struct timer_list *t) |
1da177e4 | 347 | { |
4966babd KC |
348 | struct sock *sk = from_timer(sk, t, sk_timer); |
349 | ||
350 | rose_destroy_socket(sk); | |
1da177e4 LT |
351 | } |
352 | ||
353 | /* | |
354 | * This is called from user mode and the timers. Thus it protects itself | |
355 | * against interrupt users but doesn't worry about being called during | |
356 | * work. Once it is removed from the queue no interrupt or bottom half | |
357 | * will touch it and we are (fairly 8-) ) safe. | |
358 | */ | |
359 | void rose_destroy_socket(struct sock *sk) | |
360 | { | |
361 | struct sk_buff *skb; | |
362 | ||
363 | rose_remove_socket(sk); | |
364 | rose_stop_heartbeat(sk); | |
365 | rose_stop_idletimer(sk); | |
366 | rose_stop_timer(sk); | |
367 | ||
368 | rose_clear_queues(sk); /* Flush the queues */ | |
369 | ||
370 | while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { | |
371 | if (skb->sk != sk) { /* A pending connection */ | |
372 | /* Queue the unaccepted socket for death */ | |
373 | sock_set_flag(skb->sk, SOCK_DEAD); | |
374 | rose_start_heartbeat(skb->sk); | |
375 | rose_sk(skb->sk)->state = ROSE_STATE_0; | |
376 | } | |
377 | ||
378 | kfree_skb(skb); | |
379 | } | |
380 | ||
c564039f | 381 | if (sk_has_allocations(sk)) { |
1da177e4 | 382 | /* Defer: outstanding buffers */ |
4966babd | 383 | timer_setup(&sk->sk_timer, rose_destroy_timer, 0); |
1da177e4 | 384 | sk->sk_timer.expires = jiffies + 10 * HZ; |
1da177e4 LT |
385 | add_timer(&sk->sk_timer); |
386 | } else | |
387 | sock_put(sk); | |
388 | } | |
389 | ||
390 | /* | |
391 | * Handling for system calls applied via the various interfaces to a | |
392 | * ROSE socket object. | |
393 | */ | |
394 | ||
395 | static int rose_setsockopt(struct socket *sock, int level, int optname, | |
a7b75c5a | 396 | sockptr_t optval, unsigned int optlen) |
1da177e4 LT |
397 | { |
398 | struct sock *sk = sock->sk; | |
399 | struct rose_sock *rose = rose_sk(sk); | |
400 | int opt; | |
401 | ||
402 | if (level != SOL_ROSE) | |
403 | return -ENOPROTOOPT; | |
404 | ||
405 | if (optlen < sizeof(int)) | |
406 | return -EINVAL; | |
407 | ||
a7b75c5a | 408 | if (copy_from_sockptr(&opt, optval, sizeof(int))) |
1da177e4 LT |
409 | return -EFAULT; |
410 | ||
411 | switch (optname) { | |
412 | case ROSE_DEFER: | |
413 | rose->defer = opt ? 1 : 0; | |
414 | return 0; | |
415 | ||
416 | case ROSE_T1: | |
417 | if (opt < 1) | |
418 | return -EINVAL; | |
419 | rose->t1 = opt * HZ; | |
420 | return 0; | |
421 | ||
422 | case ROSE_T2: | |
423 | if (opt < 1) | |
424 | return -EINVAL; | |
425 | rose->t2 = opt * HZ; | |
426 | return 0; | |
427 | ||
428 | case ROSE_T3: | |
429 | if (opt < 1) | |
430 | return -EINVAL; | |
431 | rose->t3 = opt * HZ; | |
432 | return 0; | |
433 | ||
434 | case ROSE_HOLDBACK: | |
435 | if (opt < 1) | |
436 | return -EINVAL; | |
437 | rose->hb = opt * HZ; | |
438 | return 0; | |
439 | ||
440 | case ROSE_IDLE: | |
441 | if (opt < 0) | |
442 | return -EINVAL; | |
443 | rose->idle = opt * 60 * HZ; | |
444 | return 0; | |
445 | ||
446 | case ROSE_QBITINCL: | |
447 | rose->qbitincl = opt ? 1 : 0; | |
448 | return 0; | |
449 | ||
450 | default: | |
451 | return -ENOPROTOOPT; | |
452 | } | |
453 | } | |
454 | ||
455 | static int rose_getsockopt(struct socket *sock, int level, int optname, | |
456 | char __user *optval, int __user *optlen) | |
457 | { | |
458 | struct sock *sk = sock->sk; | |
459 | struct rose_sock *rose = rose_sk(sk); | |
460 | int val = 0; | |
461 | int len; | |
462 | ||
463 | if (level != SOL_ROSE) | |
464 | return -ENOPROTOOPT; | |
465 | ||
466 | if (get_user(len, optlen)) | |
467 | return -EFAULT; | |
468 | ||
469 | if (len < 0) | |
470 | return -EINVAL; | |
471 | ||
472 | switch (optname) { | |
473 | case ROSE_DEFER: | |
474 | val = rose->defer; | |
475 | break; | |
476 | ||
477 | case ROSE_T1: | |
478 | val = rose->t1 / HZ; | |
479 | break; | |
480 | ||
481 | case ROSE_T2: | |
482 | val = rose->t2 / HZ; | |
483 | break; | |
484 | ||
485 | case ROSE_T3: | |
486 | val = rose->t3 / HZ; | |
487 | break; | |
488 | ||
489 | case ROSE_HOLDBACK: | |
490 | val = rose->hb / HZ; | |
491 | break; | |
492 | ||
493 | case ROSE_IDLE: | |
494 | val = rose->idle / (60 * HZ); | |
495 | break; | |
496 | ||
497 | case ROSE_QBITINCL: | |
498 | val = rose->qbitincl; | |
499 | break; | |
500 | ||
501 | default: | |
502 | return -ENOPROTOOPT; | |
503 | } | |
504 | ||
505 | len = min_t(unsigned int, len, sizeof(int)); | |
506 | ||
507 | if (put_user(len, optlen)) | |
508 | return -EFAULT; | |
509 | ||
510 | return copy_to_user(optval, &val, len) ? -EFAULT : 0; | |
511 | } | |
512 | ||
513 | static int rose_listen(struct socket *sock, int backlog) | |
514 | { | |
515 | struct sock *sk = sock->sk; | |
516 | ||
14caefcf HK |
517 | lock_sock(sk); |
518 | if (sock->state != SS_UNCONNECTED) { | |
519 | release_sock(sk); | |
520 | return -EINVAL; | |
521 | } | |
522 | ||
1da177e4 LT |
523 | if (sk->sk_state != TCP_LISTEN) { |
524 | struct rose_sock *rose = rose_sk(sk); | |
525 | ||
526 | rose->dest_ndigis = 0; | |
527 | memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); | |
528 | memset(&rose->dest_call, 0, AX25_ADDR_LEN); | |
529 | memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS); | |
530 | sk->sk_max_ack_backlog = backlog; | |
531 | sk->sk_state = TCP_LISTEN; | |
14caefcf | 532 | release_sock(sk); |
1da177e4 LT |
533 | return 0; |
534 | } | |
14caefcf | 535 | release_sock(sk); |
1da177e4 LT |
536 | |
537 | return -EOPNOTSUPP; | |
538 | } | |
539 | ||
540 | static struct proto rose_proto = { | |
541 | .name = "ROSE", | |
542 | .owner = THIS_MODULE, | |
543 | .obj_size = sizeof(struct rose_sock), | |
544 | }; | |
545 | ||
3f378b68 EP |
546 | static int rose_create(struct net *net, struct socket *sock, int protocol, |
547 | int kern) | |
1da177e4 LT |
548 | { |
549 | struct sock *sk; | |
550 | struct rose_sock *rose; | |
551 | ||
09ad9bc7 | 552 | if (!net_eq(net, &init_net)) |
1b8d7ae4 EB |
553 | return -EAFNOSUPPORT; |
554 | ||
1da177e4 LT |
555 | if (sock->type != SOCK_SEQPACKET || protocol != 0) |
556 | return -ESOCKTNOSUPPORT; | |
557 | ||
11aa9c28 | 558 | sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto, kern); |
6257ff21 | 559 | if (sk == NULL) |
1da177e4 LT |
560 | return -ENOMEM; |
561 | ||
562 | rose = rose_sk(sk); | |
563 | ||
564 | sock_init_data(sock, sk); | |
565 | ||
566 | skb_queue_head_init(&rose->ack_queue); | |
567 | #ifdef M_BIT | |
568 | skb_queue_head_init(&rose->frag_queue); | |
569 | rose->fraglen = 0; | |
570 | #endif | |
571 | ||
572 | sock->ops = &rose_proto_ops; | |
573 | sk->sk_protocol = protocol; | |
574 | ||
4966babd KC |
575 | timer_setup(&rose->timer, NULL, 0); |
576 | timer_setup(&rose->idletimer, NULL, 0); | |
1da177e4 | 577 | |
82e84249 RB |
578 | rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout); |
579 | rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout); | |
580 | rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout); | |
581 | rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout); | |
582 | rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout); | |
1da177e4 LT |
583 | |
584 | rose->state = ROSE_STATE_0; | |
585 | ||
586 | return 0; | |
587 | } | |
588 | ||
589 | static struct sock *rose_make_new(struct sock *osk) | |
590 | { | |
591 | struct sock *sk; | |
592 | struct rose_sock *rose, *orose; | |
593 | ||
594 | if (osk->sk_type != SOCK_SEQPACKET) | |
595 | return NULL; | |
596 | ||
11aa9c28 | 597 | sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto, 0); |
6257ff21 | 598 | if (sk == NULL) |
1da177e4 LT |
599 | return NULL; |
600 | ||
601 | rose = rose_sk(sk); | |
602 | ||
603 | sock_init_data(NULL, sk); | |
604 | ||
605 | skb_queue_head_init(&rose->ack_queue); | |
606 | #ifdef M_BIT | |
607 | skb_queue_head_init(&rose->frag_queue); | |
608 | rose->fraglen = 0; | |
609 | #endif | |
610 | ||
611 | sk->sk_type = osk->sk_type; | |
10bbf165 | 612 | sk->sk_priority = READ_ONCE(osk->sk_priority); |
1da177e4 LT |
613 | sk->sk_protocol = osk->sk_protocol; |
614 | sk->sk_rcvbuf = osk->sk_rcvbuf; | |
615 | sk->sk_sndbuf = osk->sk_sndbuf; | |
616 | sk->sk_state = TCP_ESTABLISHED; | |
53b924b3 | 617 | sock_copy_flags(sk, osk); |
1da177e4 | 618 | |
4966babd KC |
619 | timer_setup(&rose->timer, NULL, 0); |
620 | timer_setup(&rose->idletimer, NULL, 0); | |
1da177e4 LT |
621 | |
622 | orose = rose_sk(osk); | |
623 | rose->t1 = orose->t1; | |
624 | rose->t2 = orose->t2; | |
625 | rose->t3 = orose->t3; | |
626 | rose->hb = orose->hb; | |
627 | rose->idle = orose->idle; | |
628 | rose->defer = orose->defer; | |
629 | rose->device = orose->device; | |
93102782 | 630 | if (rose->device) |
2df91e39 | 631 | netdev_hold(rose->device, &rose->dev_tracker, GFP_ATOMIC); |
1da177e4 LT |
632 | rose->qbitincl = orose->qbitincl; |
633 | ||
634 | return sk; | |
635 | } | |
636 | ||
637 | static int rose_release(struct socket *sock) | |
638 | { | |
639 | struct sock *sk = sock->sk; | |
640 | struct rose_sock *rose; | |
641 | ||
642 | if (sk == NULL) return 0; | |
643 | ||
4965291a JP |
644 | sock_hold(sk); |
645 | sock_orphan(sk); | |
646 | lock_sock(sk); | |
1da177e4 LT |
647 | rose = rose_sk(sk); |
648 | ||
649 | switch (rose->state) { | |
650 | case ROSE_STATE_0: | |
4965291a | 651 | release_sock(sk); |
1da177e4 | 652 | rose_disconnect(sk, 0, -1, -1); |
4965291a | 653 | lock_sock(sk); |
1da177e4 LT |
654 | rose_destroy_socket(sk); |
655 | break; | |
656 | ||
657 | case ROSE_STATE_2: | |
658 | rose->neighbour->use--; | |
4965291a | 659 | release_sock(sk); |
1da177e4 | 660 | rose_disconnect(sk, 0, -1, -1); |
4965291a | 661 | lock_sock(sk); |
1da177e4 LT |
662 | rose_destroy_socket(sk); |
663 | break; | |
664 | ||
665 | case ROSE_STATE_1: | |
666 | case ROSE_STATE_3: | |
667 | case ROSE_STATE_4: | |
668 | case ROSE_STATE_5: | |
669 | rose_clear_queues(sk); | |
670 | rose_stop_idletimer(sk); | |
671 | rose_write_internal(sk, ROSE_CLEAR_REQUEST); | |
672 | rose_start_t3timer(sk); | |
673 | rose->state = ROSE_STATE_2; | |
674 | sk->sk_state = TCP_CLOSE; | |
675 | sk->sk_shutdown |= SEND_SHUTDOWN; | |
676 | sk->sk_state_change(sk); | |
677 | sock_set_flag(sk, SOCK_DEAD); | |
678 | sock_set_flag(sk, SOCK_DESTROY); | |
679 | break; | |
680 | ||
681 | default: | |
682 | break; | |
683 | } | |
684 | ||
64b8bc7d | 685 | spin_lock_bh(&rose_list_lock); |
2df91e39 | 686 | netdev_put(rose->device, &rose->dev_tracker); |
64b8bc7d ED |
687 | rose->device = NULL; |
688 | spin_unlock_bh(&rose_list_lock); | |
1da177e4 | 689 | sock->sk = NULL; |
4965291a JP |
690 | release_sock(sk); |
691 | sock_put(sk); | |
1da177e4 LT |
692 | |
693 | return 0; | |
694 | } | |
695 | ||
696 | static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
697 | { | |
698 | struct sock *sk = sock->sk; | |
699 | struct rose_sock *rose = rose_sk(sk); | |
700 | struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; | |
701 | struct net_device *dev; | |
01d7dd0e RB |
702 | ax25_address *source; |
703 | ax25_uid_assoc *user; | |
1da177e4 LT |
704 | int n; |
705 | ||
706 | if (!sock_flag(sk, SOCK_ZAPPED)) | |
707 | return -EINVAL; | |
708 | ||
709 | if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) | |
710 | return -EINVAL; | |
711 | ||
712 | if (addr->srose_family != AF_ROSE) | |
713 | return -EINVAL; | |
714 | ||
715 | if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) | |
716 | return -EINVAL; | |
717 | ||
9828e6e6 | 718 | if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) |
1da177e4 LT |
719 | return -EINVAL; |
720 | ||
8849b720 | 721 | if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) |
1da177e4 | 722 | return -EADDRNOTAVAIL; |
1da177e4 LT |
723 | |
724 | source = &addr->srose_call; | |
725 | ||
c2a2b8d3 | 726 | user = ax25_findbyuid(current_euid()); |
01d7dd0e RB |
727 | if (user) { |
728 | rose->source_call = user->call; | |
729 | ax25_uid_put(user); | |
730 | } else { | |
3b9c9f3b Y |
731 | if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) { |
732 | dev_put(dev); | |
1da177e4 | 733 | return -EACCES; |
3b9c9f3b | 734 | } |
01d7dd0e | 735 | rose->source_call = *source; |
1da177e4 LT |
736 | } |
737 | ||
738 | rose->source_addr = addr->srose_addr; | |
1da177e4 | 739 | rose->device = dev; |
2df91e39 | 740 | netdev_tracker_alloc(rose->device, &rose->dev_tracker, GFP_KERNEL); |
1da177e4 LT |
741 | rose->source_ndigis = addr->srose_ndigis; |
742 | ||
743 | if (addr_len == sizeof(struct full_sockaddr_rose)) { | |
744 | struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; | |
745 | for (n = 0 ; n < addr->srose_ndigis ; n++) | |
746 | rose->source_digis[n] = full_addr->srose_digis[n]; | |
747 | } else { | |
748 | if (rose->source_ndigis == 1) { | |
749 | rose->source_digis[0] = addr->srose_digi; | |
750 | } | |
751 | } | |
752 | ||
753 | rose_insert_socket(sk); | |
754 | ||
755 | sock_reset_flag(sk, SOCK_ZAPPED); | |
8849b720 | 756 | |
1da177e4 LT |
757 | return 0; |
758 | } | |
759 | ||
760 | static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) | |
761 | { | |
762 | struct sock *sk = sock->sk; | |
763 | struct rose_sock *rose = rose_sk(sk); | |
764 | struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; | |
765 | unsigned char cause, diagnostic; | |
01d7dd0e | 766 | ax25_uid_assoc *user; |
2536b94a | 767 | int n, err = 0; |
1da177e4 LT |
768 | |
769 | if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) | |
770 | return -EINVAL; | |
771 | ||
772 | if (addr->srose_family != AF_ROSE) | |
773 | return -EINVAL; | |
774 | ||
775 | if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) | |
776 | return -EINVAL; | |
777 | ||
9828e6e6 | 778 | if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) |
1da177e4 LT |
779 | return -EINVAL; |
780 | ||
781 | /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */ | |
782 | if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS) | |
783 | return -EINVAL; | |
784 | ||
2536b94a RB |
785 | lock_sock(sk); |
786 | ||
787 | if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { | |
788 | /* Connect completed during a ERESTARTSYS event */ | |
789 | sock->state = SS_CONNECTED; | |
790 | goto out_release; | |
791 | } | |
792 | ||
793 | if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { | |
794 | sock->state = SS_UNCONNECTED; | |
795 | err = -ECONNREFUSED; | |
796 | goto out_release; | |
797 | } | |
798 | ||
799 | if (sk->sk_state == TCP_ESTABLISHED) { | |
800 | /* No reconnect on a seqpacket socket */ | |
801 | err = -EISCONN; | |
802 | goto out_release; | |
803 | } | |
804 | ||
805 | sk->sk_state = TCP_CLOSE; | |
806 | sock->state = SS_UNCONNECTED; | |
807 | ||
1da177e4 | 808 | rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, |
fe2c802a | 809 | &diagnostic, 0); |
43837b1e BP |
810 | if (!rose->neighbour) { |
811 | err = -ENETUNREACH; | |
812 | goto out_release; | |
813 | } | |
1da177e4 LT |
814 | |
815 | rose->lci = rose_new_lci(rose->neighbour); | |
2536b94a RB |
816 | if (!rose->lci) { |
817 | err = -ENETUNREACH; | |
818 | goto out_release; | |
819 | } | |
1da177e4 LT |
820 | |
821 | if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */ | |
93102782 ED |
822 | struct net_device *dev; |
823 | ||
1da177e4 LT |
824 | sock_reset_flag(sk, SOCK_ZAPPED); |
825 | ||
93102782 ED |
826 | dev = rose_dev_first(); |
827 | if (!dev) { | |
2536b94a RB |
828 | err = -ENETUNREACH; |
829 | goto out_release; | |
830 | } | |
1da177e4 | 831 | |
c2a2b8d3 | 832 | user = ax25_findbyuid(current_euid()); |
2536b94a RB |
833 | if (!user) { |
834 | err = -EINVAL; | |
93102782 | 835 | dev_put(dev); |
2536b94a RB |
836 | goto out_release; |
837 | } | |
1da177e4 LT |
838 | |
839 | memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN); | |
01d7dd0e | 840 | rose->source_call = user->call; |
1da177e4 | 841 | rose->device = dev; |
2df91e39 ED |
842 | netdev_tracker_alloc(rose->device, &rose->dev_tracker, |
843 | GFP_KERNEL); | |
01d7dd0e | 844 | ax25_uid_put(user); |
1da177e4 LT |
845 | |
846 | rose_insert_socket(sk); /* Finish the bind */ | |
847 | } | |
1da177e4 LT |
848 | rose->dest_addr = addr->srose_addr; |
849 | rose->dest_call = addr->srose_call; | |
850 | rose->rand = ((long)rose & 0xFFFF) + rose->lci; | |
851 | rose->dest_ndigis = addr->srose_ndigis; | |
852 | ||
853 | if (addr_len == sizeof(struct full_sockaddr_rose)) { | |
854 | struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; | |
855 | for (n = 0 ; n < addr->srose_ndigis ; n++) | |
856 | rose->dest_digis[n] = full_addr->srose_digis[n]; | |
857 | } else { | |
858 | if (rose->dest_ndigis == 1) { | |
859 | rose->dest_digis[0] = addr->srose_digi; | |
860 | } | |
861 | } | |
862 | ||
863 | /* Move to connecting socket, start sending Connect Requests */ | |
864 | sock->state = SS_CONNECTING; | |
865 | sk->sk_state = TCP_SYN_SENT; | |
866 | ||
867 | rose->state = ROSE_STATE_1; | |
868 | ||
869 | rose->neighbour->use++; | |
870 | ||
871 | rose_write_internal(sk, ROSE_CALL_REQUEST); | |
872 | rose_start_heartbeat(sk); | |
873 | rose_start_t1timer(sk); | |
874 | ||
875 | /* Now the loop */ | |
2536b94a RB |
876 | if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) { |
877 | err = -EINPROGRESS; | |
878 | goto out_release; | |
879 | } | |
1da177e4 LT |
880 | |
881 | /* | |
882 | * A Connect Ack with Choke or timeout or failed routing will go to | |
883 | * closed. | |
884 | */ | |
885 | if (sk->sk_state == TCP_SYN_SENT) { | |
75606dc6 | 886 | DEFINE_WAIT(wait); |
1da177e4 | 887 | |
1da177e4 | 888 | for (;;) { |
aa395145 | 889 | prepare_to_wait(sk_sleep(sk), &wait, |
6140efb5 | 890 | TASK_INTERRUPTIBLE); |
1da177e4 LT |
891 | if (sk->sk_state != TCP_SYN_SENT) |
892 | break; | |
75606dc6 RB |
893 | if (!signal_pending(current)) { |
894 | release_sock(sk); | |
1da177e4 | 895 | schedule(); |
2536b94a | 896 | lock_sock(sk); |
1da177e4 LT |
897 | continue; |
898 | } | |
75606dc6 RB |
899 | err = -ERESTARTSYS; |
900 | break; | |
1da177e4 | 901 | } |
aa395145 | 902 | finish_wait(sk_sleep(sk), &wait); |
75606dc6 RB |
903 | |
904 | if (err) | |
905 | goto out_release; | |
1da177e4 LT |
906 | } |
907 | ||
908 | if (sk->sk_state != TCP_ESTABLISHED) { | |
909 | sock->state = SS_UNCONNECTED; | |
2536b94a RB |
910 | err = sock_error(sk); /* Always set at this point */ |
911 | goto out_release; | |
1da177e4 LT |
912 | } |
913 | ||
914 | sock->state = SS_CONNECTED; | |
915 | ||
2536b94a RB |
916 | out_release: |
917 | release_sock(sk); | |
918 | ||
919 | return err; | |
1da177e4 LT |
920 | } |
921 | ||
92ef0fd5 JA |
922 | static int rose_accept(struct socket *sock, struct socket *newsock, |
923 | struct proto_accept_arg *arg) | |
1da177e4 | 924 | { |
1da177e4 LT |
925 | struct sk_buff *skb; |
926 | struct sock *newsk; | |
75606dc6 | 927 | DEFINE_WAIT(wait); |
1da177e4 LT |
928 | struct sock *sk; |
929 | int err = 0; | |
930 | ||
931 | if ((sk = sock->sk) == NULL) | |
932 | return -EINVAL; | |
933 | ||
934 | lock_sock(sk); | |
935 | if (sk->sk_type != SOCK_SEQPACKET) { | |
936 | err = -EOPNOTSUPP; | |
75606dc6 | 937 | goto out_release; |
1da177e4 LT |
938 | } |
939 | ||
940 | if (sk->sk_state != TCP_LISTEN) { | |
941 | err = -EINVAL; | |
75606dc6 | 942 | goto out_release; |
1da177e4 LT |
943 | } |
944 | ||
945 | /* | |
946 | * The write queue this time is holding sockets ready to use | |
947 | * hooked into the SABM we saved | |
948 | */ | |
1da177e4 | 949 | for (;;) { |
aa395145 | 950 | prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
75606dc6 | 951 | |
1da177e4 LT |
952 | skb = skb_dequeue(&sk->sk_receive_queue); |
953 | if (skb) | |
954 | break; | |
955 | ||
92ef0fd5 | 956 | if (arg->flags & O_NONBLOCK) { |
75606dc6 RB |
957 | err = -EWOULDBLOCK; |
958 | break; | |
1da177e4 | 959 | } |
75606dc6 RB |
960 | if (!signal_pending(current)) { |
961 | release_sock(sk); | |
1da177e4 LT |
962 | schedule(); |
963 | lock_sock(sk); | |
964 | continue; | |
965 | } | |
75606dc6 RB |
966 | err = -ERESTARTSYS; |
967 | break; | |
1da177e4 | 968 | } |
aa395145 | 969 | finish_wait(sk_sleep(sk), &wait); |
75606dc6 RB |
970 | if (err) |
971 | goto out_release; | |
1da177e4 LT |
972 | |
973 | newsk = skb->sk; | |
44ccff1f | 974 | sock_graft(newsk, newsock); |
1da177e4 LT |
975 | |
976 | /* Now attach up the new socket */ | |
977 | skb->sk = NULL; | |
978 | kfree_skb(skb); | |
7976a11b | 979 | sk_acceptq_removed(sk); |
1da177e4 | 980 | |
75606dc6 | 981 | out_release: |
1da177e4 LT |
982 | release_sock(sk); |
983 | ||
984 | return err; | |
985 | } | |
986 | ||
987 | static int rose_getname(struct socket *sock, struct sockaddr *uaddr, | |
9b2c45d4 | 988 | int peer) |
1da177e4 LT |
989 | { |
990 | struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr; | |
991 | struct sock *sk = sock->sk; | |
992 | struct rose_sock *rose = rose_sk(sk); | |
993 | int n; | |
994 | ||
17ac2e9c | 995 | memset(srose, 0, sizeof(*srose)); |
1da177e4 LT |
996 | if (peer != 0) { |
997 | if (sk->sk_state != TCP_ESTABLISHED) | |
998 | return -ENOTCONN; | |
999 | srose->srose_family = AF_ROSE; | |
1000 | srose->srose_addr = rose->dest_addr; | |
1001 | srose->srose_call = rose->dest_call; | |
1002 | srose->srose_ndigis = rose->dest_ndigis; | |
1003 | for (n = 0; n < rose->dest_ndigis; n++) | |
1004 | srose->srose_digis[n] = rose->dest_digis[n]; | |
1005 | } else { | |
1006 | srose->srose_family = AF_ROSE; | |
1007 | srose->srose_addr = rose->source_addr; | |
1008 | srose->srose_call = rose->source_call; | |
1009 | srose->srose_ndigis = rose->source_ndigis; | |
1010 | for (n = 0; n < rose->source_ndigis; n++) | |
1011 | srose->srose_digis[n] = rose->source_digis[n]; | |
1012 | } | |
1013 | ||
9b2c45d4 | 1014 | return sizeof(struct full_sockaddr_rose); |
1da177e4 LT |
1015 | } |
1016 | ||
1017 | int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) | |
1018 | { | |
1019 | struct sock *sk; | |
1020 | struct sock *make; | |
1021 | struct rose_sock *make_rose; | |
1022 | struct rose_facilities_struct facilities; | |
e0bccd31 | 1023 | int n; |
1da177e4 LT |
1024 | |
1025 | skb->sk = NULL; /* Initially we don't know who it's for */ | |
1026 | ||
1027 | /* | |
1028 | * skb->data points to the rose frame start | |
1029 | */ | |
1030 | memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); | |
1031 | ||
e0bccd31 BH |
1032 | if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF, |
1033 | skb->len - ROSE_CALL_REQ_FACILITIES_OFF, | |
1034 | &facilities)) { | |
1da177e4 LT |
1035 | rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); |
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); | |
1040 | ||
1041 | /* | |
1042 | * We can't accept the Call Request. | |
1043 | */ | |
1044 | if (sk == NULL || sk_acceptq_is_full(sk) || | |
1045 | (make = rose_make_new(sk)) == NULL) { | |
1046 | rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); | |
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | skb->sk = make; | |
1051 | make->sk_state = TCP_ESTABLISHED; | |
1052 | make_rose = rose_sk(make); | |
1053 | ||
1054 | make_rose->lci = lci; | |
1055 | make_rose->dest_addr = facilities.dest_addr; | |
1056 | make_rose->dest_call = facilities.dest_call; | |
1057 | make_rose->dest_ndigis = facilities.dest_ndigis; | |
1058 | for (n = 0 ; n < facilities.dest_ndigis ; n++) | |
1059 | make_rose->dest_digis[n] = facilities.dest_digis[n]; | |
1060 | make_rose->source_addr = facilities.source_addr; | |
1061 | make_rose->source_call = facilities.source_call; | |
1062 | make_rose->source_ndigis = facilities.source_ndigis; | |
1063 | for (n = 0 ; n < facilities.source_ndigis ; n++) | |
db34de93 | 1064 | make_rose->source_digis[n] = facilities.source_digis[n]; |
1da177e4 LT |
1065 | make_rose->neighbour = neigh; |
1066 | make_rose->device = dev; | |
2df91e39 ED |
1067 | /* Caller got a reference for us. */ |
1068 | netdev_tracker_alloc(make_rose->device, &make_rose->dev_tracker, | |
1069 | GFP_ATOMIC); | |
1da177e4 LT |
1070 | make_rose->facilities = facilities; |
1071 | ||
1072 | make_rose->neighbour->use++; | |
1073 | ||
1074 | if (rose_sk(sk)->defer) { | |
1075 | make_rose->state = ROSE_STATE_5; | |
1076 | } else { | |
1077 | rose_write_internal(make, ROSE_CALL_ACCEPTED); | |
1078 | make_rose->state = ROSE_STATE_3; | |
1079 | rose_start_idletimer(make); | |
1080 | } | |
1081 | ||
1082 | make_rose->condition = 0x00; | |
1083 | make_rose->vs = 0; | |
1084 | make_rose->va = 0; | |
1085 | make_rose->vr = 0; | |
1086 | make_rose->vl = 0; | |
7976a11b | 1087 | sk_acceptq_added(sk); |
1da177e4 LT |
1088 | |
1089 | rose_insert_socket(make); | |
1090 | ||
1091 | skb_queue_head(&sk->sk_receive_queue, skb); | |
1092 | ||
1093 | rose_start_heartbeat(make); | |
1094 | ||
1095 | if (!sock_flag(sk, SOCK_DEAD)) | |
676d2369 | 1096 | sk->sk_data_ready(sk); |
1da177e4 LT |
1097 | |
1098 | return 1; | |
1099 | } | |
1100 | ||
1b784140 | 1101 | static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) |
1da177e4 LT |
1102 | { |
1103 | struct sock *sk = sock->sk; | |
1104 | struct rose_sock *rose = rose_sk(sk); | |
342dfc30 | 1105 | DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, msg->msg_name); |
1da177e4 LT |
1106 | int err; |
1107 | struct full_sockaddr_rose srose; | |
1108 | struct sk_buff *skb; | |
1109 | unsigned char *asmptr; | |
1110 | int n, size, qbit = 0; | |
1111 | ||
1112 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) | |
1113 | return -EINVAL; | |
1114 | ||
1115 | if (sock_flag(sk, SOCK_ZAPPED)) | |
1116 | return -EADDRNOTAVAIL; | |
1117 | ||
1118 | if (sk->sk_shutdown & SEND_SHUTDOWN) { | |
1119 | send_sig(SIGPIPE, current, 0); | |
1120 | return -EPIPE; | |
1121 | } | |
1122 | ||
1123 | if (rose->neighbour == NULL || rose->device == NULL) | |
1124 | return -ENETUNREACH; | |
1125 | ||
1126 | if (usrose != NULL) { | |
1127 | if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) | |
1128 | return -EINVAL; | |
1129 | memset(&srose, 0, sizeof(struct full_sockaddr_rose)); | |
1130 | memcpy(&srose, usrose, msg->msg_namelen); | |
1131 | if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || | |
1132 | ax25cmp(&rose->dest_call, &srose.srose_call) != 0) | |
1133 | return -EISCONN; | |
1134 | if (srose.srose_ndigis != rose->dest_ndigis) | |
1135 | return -EISCONN; | |
1136 | if (srose.srose_ndigis == rose->dest_ndigis) { | |
1137 | for (n = 0 ; n < srose.srose_ndigis ; n++) | |
1138 | if (ax25cmp(&rose->dest_digis[n], | |
1139 | &srose.srose_digis[n])) | |
1140 | return -EISCONN; | |
1141 | } | |
1142 | if (srose.srose_family != AF_ROSE) | |
1143 | return -EINVAL; | |
1144 | } else { | |
1145 | if (sk->sk_state != TCP_ESTABLISHED) | |
1146 | return -ENOTCONN; | |
1147 | ||
1148 | srose.srose_family = AF_ROSE; | |
1149 | srose.srose_addr = rose->dest_addr; | |
1150 | srose.srose_call = rose->dest_call; | |
1151 | srose.srose_ndigis = rose->dest_ndigis; | |
1152 | for (n = 0 ; n < rose->dest_ndigis ; n++) | |
1153 | srose.srose_digis[n] = rose->dest_digis[n]; | |
1154 | } | |
1155 | ||
1da177e4 | 1156 | /* Build a packet */ |
83e0bbcb AC |
1157 | /* Sanity check the packet size */ |
1158 | if (len > 65535) | |
1159 | return -EMSGSIZE; | |
1160 | ||
1da177e4 LT |
1161 | size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; |
1162 | ||
1163 | if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) | |
1164 | return err; | |
1165 | ||
1166 | skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); | |
1167 | ||
1168 | /* | |
1169 | * Put the data on the end | |
1170 | */ | |
1da177e4 | 1171 | |
eeeb0374 ACM |
1172 | skb_reset_transport_header(skb); |
1173 | skb_put(skb, len); | |
1da177e4 | 1174 | |
6ce8e9ce | 1175 | err = memcpy_from_msg(skb_transport_header(skb), msg, len); |
1da177e4 LT |
1176 | if (err) { |
1177 | kfree_skb(skb); | |
1178 | return err; | |
1179 | } | |
1180 | ||
1181 | /* | |
1182 | * If the Q BIT Include socket option is in force, the first | |
1183 | * byte of the user data is the logical value of the Q Bit. | |
1184 | */ | |
1185 | if (rose->qbitincl) { | |
1186 | qbit = skb->data[0]; | |
1187 | skb_pull(skb, 1); | |
1188 | } | |
1189 | ||
1190 | /* | |
1191 | * Push down the ROSE header | |
1192 | */ | |
1193 | asmptr = skb_push(skb, ROSE_MIN_LEN); | |
1194 | ||
1da177e4 LT |
1195 | /* Build a ROSE Network header */ |
1196 | asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; | |
1197 | asmptr[1] = (rose->lci >> 0) & 0xFF; | |
1198 | asmptr[2] = ROSE_DATA; | |
1199 | ||
1200 | if (qbit) | |
1201 | asmptr[0] |= ROSE_Q_BIT; | |
1202 | ||
1da177e4 LT |
1203 | if (sk->sk_state != TCP_ESTABLISHED) { |
1204 | kfree_skb(skb); | |
1205 | return -ENOTCONN; | |
1206 | } | |
1207 | ||
1208 | #ifdef M_BIT | |
1209 | #define ROSE_PACLEN (256-ROSE_MIN_LEN) | |
1210 | if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { | |
1211 | unsigned char header[ROSE_MIN_LEN]; | |
1212 | struct sk_buff *skbn; | |
1213 | int frontlen; | |
1214 | int lg; | |
1215 | ||
1216 | /* Save a copy of the Header */ | |
d626f62b | 1217 | skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN); |
1da177e4 LT |
1218 | skb_pull(skb, ROSE_MIN_LEN); |
1219 | ||
1220 | frontlen = skb_headroom(skb); | |
1221 | ||
1222 | while (skb->len > 0) { | |
1223 | if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { | |
1224 | kfree_skb(skb); | |
1225 | return err; | |
1226 | } | |
1227 | ||
1228 | skbn->sk = sk; | |
1229 | skbn->free = 1; | |
1230 | skbn->arp = 1; | |
1231 | ||
1232 | skb_reserve(skbn, frontlen); | |
1233 | ||
1234 | lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; | |
1235 | ||
1236 | /* Copy the user data */ | |
d626f62b | 1237 | skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg); |
1da177e4 LT |
1238 | skb_pull(skb, lg); |
1239 | ||
1240 | /* Duplicate the Header */ | |
1241 | skb_push(skbn, ROSE_MIN_LEN); | |
27d7ff46 | 1242 | skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN); |
1da177e4 LT |
1243 | |
1244 | if (skb->len > 0) | |
1245 | skbn->data[2] |= M_BIT; | |
1246 | ||
1247 | skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ | |
1248 | } | |
1249 | ||
1250 | skb->free = 1; | |
1251 | kfree_skb(skb); | |
1252 | } else { | |
1253 | skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ | |
1254 | } | |
1255 | #else | |
1256 | skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ | |
1257 | #endif | |
1258 | ||
1259 | rose_kick(sk); | |
1260 | ||
1261 | return len; | |
1262 | } | |
1263 | ||
1264 | ||
1b784140 YX |
1265 | static int rose_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, |
1266 | int flags) | |
1da177e4 LT |
1267 | { |
1268 | struct sock *sk = sock->sk; | |
1269 | struct rose_sock *rose = rose_sk(sk); | |
1da177e4 LT |
1270 | size_t copied; |
1271 | unsigned char *asmptr; | |
1272 | struct sk_buff *skb; | |
1273 | int n, er, qbit; | |
1274 | ||
1275 | /* | |
1276 | * This works for seqpacket too. The receiver has ordered the queue for | |
1277 | * us! We do one quick check first though | |
1278 | */ | |
1279 | if (sk->sk_state != TCP_ESTABLISHED) | |
1280 | return -ENOTCONN; | |
1281 | ||
1282 | /* Now we can treat all alike */ | |
f4b41f06 OH |
1283 | skb = skb_recv_datagram(sk, flags, &er); |
1284 | if (!skb) | |
1da177e4 LT |
1285 | return er; |
1286 | ||
1287 | qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; | |
1288 | ||
1289 | skb_pull(skb, ROSE_MIN_LEN); | |
1290 | ||
1291 | if (rose->qbitincl) { | |
1292 | asmptr = skb_push(skb, 1); | |
1293 | *asmptr = qbit; | |
1294 | } | |
1295 | ||
badff6d0 | 1296 | skb_reset_transport_header(skb); |
1da177e4 LT |
1297 | copied = skb->len; |
1298 | ||
1299 | if (copied > size) { | |
1300 | copied = size; | |
1301 | msg->msg_flags |= MSG_TRUNC; | |
1302 | } | |
1303 | ||
51f3d02b | 1304 | skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 | 1305 | |
f3d33426 HFS |
1306 | if (msg->msg_name) { |
1307 | struct sockaddr_rose *srose; | |
342dfc30 SH |
1308 | DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose, |
1309 | msg->msg_name); | |
f3d33426 HFS |
1310 | |
1311 | memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose)); | |
1312 | srose = msg->msg_name; | |
1da177e4 LT |
1313 | srose->srose_family = AF_ROSE; |
1314 | srose->srose_addr = rose->dest_addr; | |
1315 | srose->srose_call = rose->dest_call; | |
1316 | srose->srose_ndigis = rose->dest_ndigis; | |
f81152e3 FW |
1317 | for (n = 0 ; n < rose->dest_ndigis ; n++) |
1318 | full_srose->srose_digis[n] = rose->dest_digis[n]; | |
1319 | msg->msg_namelen = sizeof(struct full_sockaddr_rose); | |
1da177e4 LT |
1320 | } |
1321 | ||
1322 | skb_free_datagram(sk, skb); | |
1323 | ||
1324 | return copied; | |
1325 | } | |
1326 | ||
1327 | ||
1328 | static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1329 | { | |
1330 | struct sock *sk = sock->sk; | |
1331 | struct rose_sock *rose = rose_sk(sk); | |
1332 | void __user *argp = (void __user *)arg; | |
1333 | ||
1334 | switch (cmd) { | |
1335 | case TIOCOUTQ: { | |
1336 | long amount; | |
31e6d363 ED |
1337 | |
1338 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); | |
1da177e4 LT |
1339 | if (amount < 0) |
1340 | amount = 0; | |
20b7d10a | 1341 | return put_user(amount, (unsigned int __user *) argp); |
1da177e4 LT |
1342 | } |
1343 | ||
1344 | case TIOCINQ: { | |
1345 | struct sk_buff *skb; | |
1346 | long amount = 0L; | |
810c38a3 HK |
1347 | |
1348 | spin_lock_irq(&sk->sk_receive_queue.lock); | |
1da177e4 LT |
1349 | if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) |
1350 | amount = skb->len; | |
810c38a3 | 1351 | spin_unlock_irq(&sk->sk_receive_queue.lock); |
20b7d10a | 1352 | return put_user(amount, (unsigned int __user *) argp); |
1da177e4 LT |
1353 | } |
1354 | ||
1da177e4 LT |
1355 | case SIOCGIFADDR: |
1356 | case SIOCSIFADDR: | |
1357 | case SIOCGIFDSTADDR: | |
1358 | case SIOCSIFDSTADDR: | |
1359 | case SIOCGIFBRDADDR: | |
1360 | case SIOCSIFBRDADDR: | |
1361 | case SIOCGIFNETMASK: | |
1362 | case SIOCSIFNETMASK: | |
1363 | case SIOCGIFMETRIC: | |
1364 | case SIOCSIFMETRIC: | |
1365 | return -EINVAL; | |
1366 | ||
1367 | case SIOCADDRT: | |
1368 | case SIOCDELRT: | |
1369 | case SIOCRSCLRRT: | |
1370 | if (!capable(CAP_NET_ADMIN)) | |
1371 | return -EPERM; | |
1372 | return rose_rt_ioctl(cmd, argp); | |
1373 | ||
1374 | case SIOCRSGCAUSE: { | |
1375 | struct rose_cause_struct rose_cause; | |
1376 | rose_cause.cause = rose->cause; | |
1377 | rose_cause.diagnostic = rose->diagnostic; | |
1378 | return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; | |
1379 | } | |
1380 | ||
1381 | case SIOCRSSCAUSE: { | |
1382 | struct rose_cause_struct rose_cause; | |
1383 | if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) | |
1384 | return -EFAULT; | |
1385 | rose->cause = rose_cause.cause; | |
1386 | rose->diagnostic = rose_cause.diagnostic; | |
1387 | return 0; | |
1388 | } | |
1389 | ||
1390 | case SIOCRSSL2CALL: | |
1391 | if (!capable(CAP_NET_ADMIN)) return -EPERM; | |
1392 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
1393 | ax25_listen_release(&rose_callsign, NULL); | |
1394 | if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) | |
1395 | return -EFAULT; | |
1396 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
81dcd169 RB |
1397 | return ax25_listen_register(&rose_callsign, NULL); |
1398 | ||
1da177e4 LT |
1399 | return 0; |
1400 | ||
1401 | case SIOCRSGL2CALL: | |
1402 | return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; | |
1403 | ||
1404 | case SIOCRSACCEPT: | |
1405 | if (rose->state == ROSE_STATE_5) { | |
1406 | rose_write_internal(sk, ROSE_CALL_ACCEPTED); | |
1407 | rose_start_idletimer(sk); | |
1408 | rose->condition = 0x00; | |
1409 | rose->vs = 0; | |
1410 | rose->va = 0; | |
1411 | rose->vr = 0; | |
1412 | rose->vl = 0; | |
1413 | rose->state = ROSE_STATE_3; | |
1414 | } | |
1415 | return 0; | |
1416 | ||
1417 | default: | |
b5e5fa5e | 1418 | return -ENOIOCTLCMD; |
1da177e4 LT |
1419 | } |
1420 | ||
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | #ifdef CONFIG_PROC_FS | |
1425 | static void *rose_info_start(struct seq_file *seq, loff_t *pos) | |
95b7d924 | 1426 | __acquires(rose_list_lock) |
1da177e4 | 1427 | { |
1da177e4 | 1428 | spin_lock_bh(&rose_list_lock); |
b999748a | 1429 | return seq_hlist_start_head(&rose_list, *pos); |
1da177e4 LT |
1430 | } |
1431 | ||
1432 | static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) | |
1433 | { | |
b999748a | 1434 | return seq_hlist_next(v, &rose_list, pos); |
1da177e4 | 1435 | } |
3dcf7c5e | 1436 | |
1da177e4 | 1437 | static void rose_info_stop(struct seq_file *seq, void *v) |
95b7d924 | 1438 | __releases(rose_list_lock) |
1da177e4 LT |
1439 | { |
1440 | spin_unlock_bh(&rose_list_lock); | |
1441 | } | |
1442 | ||
1443 | static int rose_info_show(struct seq_file *seq, void *v) | |
1444 | { | |
dcf777f6 | 1445 | char buf[11], rsbuf[11]; |
f75268cd | 1446 | |
1da177e4 | 1447 | if (v == SEQ_START_TOKEN) |
3dcf7c5e | 1448 | seq_puts(seq, |
1da177e4 LT |
1449 | "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"); |
1450 | ||
1451 | else { | |
b999748a | 1452 | struct sock *s = sk_entry(v); |
1da177e4 LT |
1453 | struct rose_sock *rose = rose_sk(s); |
1454 | const char *devname, *callsign; | |
1455 | const struct net_device *dev = rose->device; | |
1456 | ||
1457 | if (!dev) | |
1458 | devname = "???"; | |
1459 | else | |
1460 | devname = dev->name; | |
3dcf7c5e | 1461 | |
1da177e4 | 1462 | seq_printf(seq, "%-10s %-9s ", |
dcf777f6 RB |
1463 | rose2asc(rsbuf, &rose->dest_addr), |
1464 | ax2asc(buf, &rose->dest_call)); | |
1da177e4 LT |
1465 | |
1466 | if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) | |
1467 | callsign = "??????-?"; | |
1468 | else | |
f75268cd | 1469 | callsign = ax2asc(buf, &rose->source_call); |
1da177e4 LT |
1470 | |
1471 | seq_printf(seq, | |
1472 | "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", | |
dcf777f6 | 1473 | rose2asc(rsbuf, &rose->source_addr), |
1da177e4 LT |
1474 | callsign, |
1475 | devname, | |
1476 | rose->lci & 0x0FFF, | |
1477 | (rose->neighbour) ? rose->neighbour->number : 0, | |
1478 | rose->state, | |
1479 | rose->vs, | |
1480 | rose->vr, | |
1481 | rose->va, | |
1482 | ax25_display_timer(&rose->timer) / HZ, | |
1483 | rose->t1 / HZ, | |
1484 | rose->t2 / HZ, | |
1485 | rose->t3 / HZ, | |
1486 | rose->hb / HZ, | |
1487 | ax25_display_timer(&rose->idletimer) / (60 * HZ), | |
1488 | rose->idle / (60 * HZ), | |
31e6d363 ED |
1489 | sk_wmem_alloc_get(s), |
1490 | sk_rmem_alloc_get(s), | |
1da177e4 LT |
1491 | s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); |
1492 | } | |
1493 | ||
1494 | return 0; | |
1495 | } | |
1496 | ||
56b3d975 | 1497 | static const struct seq_operations rose_info_seqops = { |
1da177e4 LT |
1498 | .start = rose_info_start, |
1499 | .next = rose_info_next, | |
1500 | .stop = rose_info_stop, | |
1501 | .show = rose_info_show, | |
1502 | }; | |
1da177e4 LT |
1503 | #endif /* CONFIG_PROC_FS */ |
1504 | ||
ec1b4cf7 | 1505 | static const struct net_proto_family rose_family_ops = { |
1da177e4 LT |
1506 | .family = PF_ROSE, |
1507 | .create = rose_create, | |
1508 | .owner = THIS_MODULE, | |
1509 | }; | |
1510 | ||
5708e868 | 1511 | static const struct proto_ops rose_proto_ops = { |
1da177e4 LT |
1512 | .family = PF_ROSE, |
1513 | .owner = THIS_MODULE, | |
1514 | .release = rose_release, | |
1515 | .bind = rose_bind, | |
1516 | .connect = rose_connect, | |
1517 | .socketpair = sock_no_socketpair, | |
1518 | .accept = rose_accept, | |
1519 | .getname = rose_getname, | |
a11e1d43 | 1520 | .poll = datagram_poll, |
1da177e4 | 1521 | .ioctl = rose_ioctl, |
c7cbdbf2 | 1522 | .gettstamp = sock_gettstamp, |
1da177e4 LT |
1523 | .listen = rose_listen, |
1524 | .shutdown = sock_no_shutdown, | |
1525 | .setsockopt = rose_setsockopt, | |
1526 | .getsockopt = rose_getsockopt, | |
1527 | .sendmsg = rose_sendmsg, | |
1528 | .recvmsg = rose_recvmsg, | |
1529 | .mmap = sock_no_mmap, | |
1da177e4 LT |
1530 | }; |
1531 | ||
1532 | static struct notifier_block rose_dev_notifier = { | |
1533 | .notifier_call = rose_device_event, | |
1534 | }; | |
1535 | ||
1536 | static struct net_device **dev_rose; | |
1537 | ||
8d5cf596 RB |
1538 | static struct ax25_protocol rose_pid = { |
1539 | .pid = AX25_P_ROSE, | |
1540 | .func = rose_route_frame | |
1541 | }; | |
1542 | ||
a4282717 RB |
1543 | static struct ax25_linkfail rose_linkfail_notifier = { |
1544 | .func = rose_link_failed | |
1545 | }; | |
1546 | ||
1da177e4 LT |
1547 | static int __init rose_proto_init(void) |
1548 | { | |
1549 | int i; | |
a83cd2cc | 1550 | int rc; |
1da177e4 | 1551 | |
a83cd2cc | 1552 | if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { |
4d299f18 | 1553 | printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter too large\n"); |
a83cd2cc AD |
1554 | rc = -EINVAL; |
1555 | goto out; | |
1556 | } | |
1557 | ||
1558 | rc = proto_register(&rose_proto, 0); | |
1da177e4 LT |
1559 | if (rc != 0) |
1560 | goto out; | |
1561 | ||
1562 | rose_callsign = null_ax25_address; | |
1563 | ||
6396bb22 KC |
1564 | dev_rose = kcalloc(rose_ndevs, sizeof(struct net_device *), |
1565 | GFP_KERNEL); | |
1da177e4 LT |
1566 | if (dev_rose == NULL) { |
1567 | printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); | |
a83cd2cc AD |
1568 | rc = -ENOMEM; |
1569 | goto out_proto_unregister; | |
1da177e4 LT |
1570 | } |
1571 | ||
1da177e4 LT |
1572 | for (i = 0; i < rose_ndevs; i++) { |
1573 | struct net_device *dev; | |
1574 | char name[IFNAMSIZ]; | |
1575 | ||
1576 | sprintf(name, "rose%d", i); | |
c835a677 | 1577 | dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, rose_setup); |
1da177e4 LT |
1578 | if (!dev) { |
1579 | printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); | |
70ff3b66 | 1580 | rc = -ENOMEM; |
1da177e4 LT |
1581 | goto fail; |
1582 | } | |
70ff3b66 AD |
1583 | rc = register_netdev(dev); |
1584 | if (rc) { | |
520d1b83 | 1585 | printk(KERN_ERR "ROSE: netdevice registration failed\n"); |
1da177e4 LT |
1586 | free_netdev(dev); |
1587 | goto fail; | |
1588 | } | |
1a33e10e | 1589 | rose_set_lockdep_key(dev); |
1da177e4 LT |
1590 | dev_rose[i] = dev; |
1591 | } | |
1592 | ||
1593 | sock_register(&rose_family_ops); | |
1594 | register_netdevice_notifier(&rose_dev_notifier); | |
1da177e4 | 1595 | |
8d5cf596 | 1596 | ax25_register_pid(&rose_pid); |
a4282717 | 1597 | ax25_linkfail_register(&rose_linkfail_notifier); |
1da177e4 LT |
1598 | |
1599 | #ifdef CONFIG_SYSCTL | |
1600 | rose_register_sysctl(); | |
1601 | #endif | |
1602 | rose_loopback_init(); | |
1603 | ||
1604 | rose_add_loopback_neigh(); | |
1605 | ||
fddda2b7 CH |
1606 | proc_create_seq("rose", 0444, init_net.proc_net, &rose_info_seqops); |
1607 | proc_create_seq("rose_neigh", 0444, init_net.proc_net, | |
1608 | &rose_neigh_seqops); | |
1609 | proc_create_seq("rose_nodes", 0444, init_net.proc_net, | |
1610 | &rose_node_seqops); | |
1611 | proc_create_seq("rose_routes", 0444, init_net.proc_net, | |
1612 | &rose_route_seqops); | |
1da177e4 LT |
1613 | out: |
1614 | return rc; | |
1615 | fail: | |
1616 | while (--i >= 0) { | |
1617 | unregister_netdev(dev_rose[i]); | |
1618 | free_netdev(dev_rose[i]); | |
1619 | } | |
1620 | kfree(dev_rose); | |
a83cd2cc | 1621 | out_proto_unregister: |
1da177e4 | 1622 | proto_unregister(&rose_proto); |
70ff3b66 | 1623 | goto out; |
1da177e4 LT |
1624 | } |
1625 | module_init(rose_proto_init); | |
1626 | ||
1627 | module_param(rose_ndevs, int, 0); | |
1628 | MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); | |
1629 | ||
1630 | MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); | |
1631 | MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); | |
1632 | MODULE_LICENSE("GPL"); | |
1633 | MODULE_ALIAS_NETPROTO(PF_ROSE); | |
1634 | ||
1635 | static void __exit rose_exit(void) | |
1636 | { | |
1637 | int i; | |
1638 | ||
ece31ffd G |
1639 | remove_proc_entry("rose", init_net.proc_net); |
1640 | remove_proc_entry("rose_neigh", init_net.proc_net); | |
1641 | remove_proc_entry("rose_nodes", init_net.proc_net); | |
1642 | remove_proc_entry("rose_routes", init_net.proc_net); | |
1da177e4 LT |
1643 | rose_loopback_clear(); |
1644 | ||
1645 | rose_rt_free(); | |
1646 | ||
1647 | ax25_protocol_release(AX25_P_ROSE); | |
a4282717 | 1648 | ax25_linkfail_release(&rose_linkfail_notifier); |
1da177e4 LT |
1649 | |
1650 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
1651 | ax25_listen_release(&rose_callsign, NULL); | |
1652 | ||
1653 | #ifdef CONFIG_SYSCTL | |
1654 | rose_unregister_sysctl(); | |
1655 | #endif | |
1656 | unregister_netdevice_notifier(&rose_dev_notifier); | |
1657 | ||
1658 | sock_unregister(PF_ROSE); | |
1659 | ||
1660 | for (i = 0; i < rose_ndevs; i++) { | |
1661 | struct net_device *dev = dev_rose[i]; | |
1662 | ||
1663 | if (dev) { | |
1664 | unregister_netdev(dev); | |
1665 | free_netdev(dev); | |
1666 | } | |
1667 | } | |
1668 | ||
1669 | kfree(dev_rose); | |
1670 | proto_unregister(&rose_proto); | |
1671 | } | |
1672 | ||
1673 | module_exit(rose_exit); |