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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | RFCOMM implementation for Linux Bluetooth stack (BlueZ). |
3 | Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com> | |
4 | Copyright (C) 2002 Marcel Holtmann <marcel@holtmann.org> | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License version 2 as | |
8 | published by the Free Software Foundation; | |
9 | ||
10 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
11 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
12 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
13 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
14 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
15 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
16 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
17 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
18 | ||
8e87d142 YH |
19 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
20 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
21 | SOFTWARE IS DISCLAIMED. |
22 | */ | |
23 | ||
24 | /* | |
25 | * RFCOMM sockets. | |
1da177e4 LT |
26 | */ |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
aef7d97c | 29 | #include <linux/debugfs.h> |
1da177e4 LT |
30 | |
31 | #include <net/bluetooth/bluetooth.h> | |
32 | #include <net/bluetooth/hci_core.h> | |
33 | #include <net/bluetooth/l2cap.h> | |
34 | #include <net/bluetooth/rfcomm.h> | |
35 | ||
90ddc4f0 | 36 | static const struct proto_ops rfcomm_sock_ops; |
1da177e4 LT |
37 | |
38 | static struct bt_sock_list rfcomm_sk_list = { | |
d5fb2962 | 39 | .lock = __RW_LOCK_UNLOCKED(rfcomm_sk_list.lock) |
1da177e4 LT |
40 | }; |
41 | ||
42 | static void rfcomm_sock_close(struct sock *sk); | |
43 | static void rfcomm_sock_kill(struct sock *sk); | |
44 | ||
45 | /* ---- DLC callbacks ---- | |
46 | * | |
47 | * called under rfcomm_dlc_lock() | |
48 | */ | |
49 | static void rfcomm_sk_data_ready(struct rfcomm_dlc *d, struct sk_buff *skb) | |
50 | { | |
51 | struct sock *sk = d->owner; | |
52 | if (!sk) | |
53 | return; | |
54 | ||
55 | atomic_add(skb->len, &sk->sk_rmem_alloc); | |
56 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
57 | sk->sk_data_ready(sk, skb->len); | |
58 | ||
59 | if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) | |
60 | rfcomm_dlc_throttle(d); | |
61 | } | |
62 | ||
63 | static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err) | |
64 | { | |
65 | struct sock *sk = d->owner, *parent; | |
fad003b6 GP |
66 | unsigned long flags; |
67 | ||
1da177e4 LT |
68 | if (!sk) |
69 | return; | |
70 | ||
71 | BT_DBG("dlc %p state %ld err %d", d, d->state, err); | |
72 | ||
fad003b6 | 73 | local_irq_save(flags); |
1da177e4 LT |
74 | bh_lock_sock(sk); |
75 | ||
76 | if (err) | |
77 | sk->sk_err = err; | |
78 | ||
79 | sk->sk_state = d->state; | |
80 | ||
81 | parent = bt_sk(sk)->parent; | |
82 | if (parent) { | |
83 | if (d->state == BT_CLOSED) { | |
84 | sock_set_flag(sk, SOCK_ZAPPED); | |
85 | bt_accept_unlink(sk); | |
86 | } | |
87 | parent->sk_data_ready(parent, 0); | |
88 | } else { | |
89 | if (d->state == BT_CONNECTED) | |
94a86df0 MH |
90 | rfcomm_session_getaddr(d->session, |
91 | &rfcomm_pi(sk)->src, NULL); | |
1da177e4 LT |
92 | sk->sk_state_change(sk); |
93 | } | |
94 | ||
95 | bh_unlock_sock(sk); | |
fad003b6 | 96 | local_irq_restore(flags); |
1da177e4 LT |
97 | |
98 | if (parent && sock_flag(sk, SOCK_ZAPPED)) { | |
99 | /* We have to drop DLC lock here, otherwise | |
100 | * rfcomm_sock_destruct() will dead lock. */ | |
101 | rfcomm_dlc_unlock(d); | |
102 | rfcomm_sock_kill(sk); | |
103 | rfcomm_dlc_lock(d); | |
104 | } | |
105 | } | |
106 | ||
107 | /* ---- Socket functions ---- */ | |
108 | static struct sock *__rfcomm_get_sock_by_addr(u8 channel, bdaddr_t *src) | |
109 | { | |
110 | struct sock *sk = NULL; | |
1da177e4 | 111 | |
b67bfe0d | 112 | sk_for_each(sk, &rfcomm_sk_list.head) { |
8e87d142 | 113 | if (rfcomm_pi(sk)->channel == channel && |
94a86df0 | 114 | !bacmp(&rfcomm_pi(sk)->src, src)) |
1da177e4 LT |
115 | break; |
116 | } | |
117 | ||
b67bfe0d | 118 | return sk ? sk : NULL; |
1da177e4 LT |
119 | } |
120 | ||
121 | /* Find socket with channel and source bdaddr. | |
122 | * Returns closest match. | |
123 | */ | |
eeb36656 | 124 | static struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src) |
1da177e4 LT |
125 | { |
126 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 | 127 | |
eeb36656 GP |
128 | read_lock(&rfcomm_sk_list.lock); |
129 | ||
b67bfe0d | 130 | sk_for_each(sk, &rfcomm_sk_list.head) { |
1da177e4 LT |
131 | if (state && sk->sk_state != state) |
132 | continue; | |
133 | ||
134 | if (rfcomm_pi(sk)->channel == channel) { | |
135 | /* Exact match. */ | |
94a86df0 | 136 | if (!bacmp(&rfcomm_pi(sk)->src, src)) |
1da177e4 LT |
137 | break; |
138 | ||
139 | /* Closest match */ | |
94a86df0 | 140 | if (!bacmp(&rfcomm_pi(sk)->src, BDADDR_ANY)) |
1da177e4 LT |
141 | sk1 = sk; |
142 | } | |
143 | } | |
1da177e4 | 144 | |
1da177e4 | 145 | read_unlock(&rfcomm_sk_list.lock); |
eeb36656 | 146 | |
b67bfe0d | 147 | return sk ? sk : sk1; |
1da177e4 LT |
148 | } |
149 | ||
150 | static void rfcomm_sock_destruct(struct sock *sk) | |
151 | { | |
152 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
153 | ||
154 | BT_DBG("sk %p dlc %p", sk, d); | |
155 | ||
156 | skb_queue_purge(&sk->sk_receive_queue); | |
157 | skb_queue_purge(&sk->sk_write_queue); | |
158 | ||
159 | rfcomm_dlc_lock(d); | |
160 | rfcomm_pi(sk)->dlc = NULL; | |
161 | ||
162 | /* Detach DLC if it's owned by this socket */ | |
163 | if (d->owner == sk) | |
164 | d->owner = NULL; | |
165 | rfcomm_dlc_unlock(d); | |
166 | ||
167 | rfcomm_dlc_put(d); | |
168 | } | |
169 | ||
170 | static void rfcomm_sock_cleanup_listen(struct sock *parent) | |
171 | { | |
172 | struct sock *sk; | |
173 | ||
174 | BT_DBG("parent %p", parent); | |
175 | ||
176 | /* Close not yet accepted dlcs */ | |
177 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
178 | rfcomm_sock_close(sk); | |
179 | rfcomm_sock_kill(sk); | |
180 | } | |
181 | ||
182 | parent->sk_state = BT_CLOSED; | |
183 | sock_set_flag(parent, SOCK_ZAPPED); | |
184 | } | |
185 | ||
186 | /* Kill socket (only if zapped and orphan) | |
187 | * Must be called on unlocked socket. | |
188 | */ | |
189 | static void rfcomm_sock_kill(struct sock *sk) | |
190 | { | |
191 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
192 | return; | |
193 | ||
194 | BT_DBG("sk %p state %d refcnt %d", sk, sk->sk_state, atomic_read(&sk->sk_refcnt)); | |
195 | ||
196 | /* Kill poor orphan */ | |
197 | bt_sock_unlink(&rfcomm_sk_list, sk); | |
198 | sock_set_flag(sk, SOCK_DEAD); | |
199 | sock_put(sk); | |
200 | } | |
201 | ||
202 | static void __rfcomm_sock_close(struct sock *sk) | |
203 | { | |
204 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
205 | ||
206 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); | |
207 | ||
208 | switch (sk->sk_state) { | |
209 | case BT_LISTEN: | |
210 | rfcomm_sock_cleanup_listen(sk); | |
211 | break; | |
212 | ||
213 | case BT_CONNECT: | |
214 | case BT_CONNECT2: | |
215 | case BT_CONFIG: | |
216 | case BT_CONNECTED: | |
217 | rfcomm_dlc_close(d, 0); | |
218 | ||
219 | default: | |
220 | sock_set_flag(sk, SOCK_ZAPPED); | |
221 | break; | |
222 | } | |
223 | } | |
224 | ||
225 | /* Close socket. | |
226 | * Must be called on unlocked socket. | |
227 | */ | |
228 | static void rfcomm_sock_close(struct sock *sk) | |
229 | { | |
230 | lock_sock(sk); | |
231 | __rfcomm_sock_close(sk); | |
232 | release_sock(sk); | |
233 | } | |
234 | ||
235 | static void rfcomm_sock_init(struct sock *sk, struct sock *parent) | |
236 | { | |
237 | struct rfcomm_pinfo *pi = rfcomm_pi(sk); | |
238 | ||
239 | BT_DBG("sk %p", sk); | |
240 | ||
241 | if (parent) { | |
242 | sk->sk_type = parent->sk_type; | |
c5daa683 GP |
243 | pi->dlc->defer_setup = test_bit(BT_SK_DEFER_SETUP, |
244 | &bt_sk(parent)->flags); | |
9f2c8a03 MH |
245 | |
246 | pi->sec_level = rfcomm_pi(parent)->sec_level; | |
247 | pi->role_switch = rfcomm_pi(parent)->role_switch; | |
6230c9b4 PM |
248 | |
249 | security_sk_clone(parent, sk); | |
1da177e4 | 250 | } else { |
bb23c0ab | 251 | pi->dlc->defer_setup = 0; |
9f2c8a03 MH |
252 | |
253 | pi->sec_level = BT_SECURITY_LOW; | |
254 | pi->role_switch = 0; | |
1da177e4 LT |
255 | } |
256 | ||
9f2c8a03 MH |
257 | pi->dlc->sec_level = pi->sec_level; |
258 | pi->dlc->role_switch = pi->role_switch; | |
1da177e4 LT |
259 | } |
260 | ||
261 | static struct proto rfcomm_proto = { | |
262 | .name = "RFCOMM", | |
263 | .owner = THIS_MODULE, | |
264 | .obj_size = sizeof(struct rfcomm_pinfo) | |
265 | }; | |
266 | ||
1b8d7ae4 | 267 | static struct sock *rfcomm_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
1da177e4 LT |
268 | { |
269 | struct rfcomm_dlc *d; | |
270 | struct sock *sk; | |
271 | ||
6257ff21 | 272 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &rfcomm_proto); |
1da177e4 LT |
273 | if (!sk) |
274 | return NULL; | |
275 | ||
276 | sock_init_data(sock, sk); | |
277 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
278 | ||
279 | d = rfcomm_dlc_alloc(prio); | |
280 | if (!d) { | |
281 | sk_free(sk); | |
282 | return NULL; | |
283 | } | |
284 | ||
285 | d->data_ready = rfcomm_sk_data_ready; | |
286 | d->state_change = rfcomm_sk_state_change; | |
287 | ||
288 | rfcomm_pi(sk)->dlc = d; | |
289 | d->owner = sk; | |
290 | ||
291 | sk->sk_destruct = rfcomm_sock_destruct; | |
292 | sk->sk_sndtimeo = RFCOMM_CONN_TIMEOUT; | |
293 | ||
77db1980 MH |
294 | sk->sk_sndbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10; |
295 | sk->sk_rcvbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10; | |
1da177e4 LT |
296 | |
297 | sock_reset_flag(sk, SOCK_ZAPPED); | |
298 | ||
299 | sk->sk_protocol = proto; | |
77db1980 | 300 | sk->sk_state = BT_OPEN; |
1da177e4 LT |
301 | |
302 | bt_sock_link(&rfcomm_sk_list, sk); | |
303 | ||
304 | BT_DBG("sk %p", sk); | |
305 | return sk; | |
306 | } | |
307 | ||
3f378b68 EP |
308 | static int rfcomm_sock_create(struct net *net, struct socket *sock, |
309 | int protocol, int kern) | |
1da177e4 LT |
310 | { |
311 | struct sock *sk; | |
312 | ||
313 | BT_DBG("sock %p", sock); | |
314 | ||
315 | sock->state = SS_UNCONNECTED; | |
316 | ||
317 | if (sock->type != SOCK_STREAM && sock->type != SOCK_RAW) | |
318 | return -ESOCKTNOSUPPORT; | |
319 | ||
320 | sock->ops = &rfcomm_sock_ops; | |
321 | ||
1b8d7ae4 | 322 | sk = rfcomm_sock_alloc(net, sock, protocol, GFP_ATOMIC); |
74da626a | 323 | if (!sk) |
1da177e4 LT |
324 | return -ENOMEM; |
325 | ||
326 | rfcomm_sock_init(sk, NULL); | |
327 | return 0; | |
328 | } | |
329 | ||
330 | static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
331 | { | |
332 | struct sockaddr_rc *sa = (struct sockaddr_rc *) addr; | |
333 | struct sock *sk = sock->sk; | |
334 | int err = 0; | |
335 | ||
6ed93dc6 | 336 | BT_DBG("sk %p %pMR", sk, &sa->rc_bdaddr); |
1da177e4 LT |
337 | |
338 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
339 | return -EINVAL; | |
340 | ||
341 | lock_sock(sk); | |
342 | ||
343 | if (sk->sk_state != BT_OPEN) { | |
344 | err = -EBADFD; | |
345 | goto done; | |
346 | } | |
347 | ||
354d28d5 MH |
348 | if (sk->sk_type != SOCK_STREAM) { |
349 | err = -EINVAL; | |
350 | goto done; | |
351 | } | |
352 | ||
95ca83f4 | 353 | write_lock(&rfcomm_sk_list.lock); |
1da177e4 LT |
354 | |
355 | if (sa->rc_channel && __rfcomm_get_sock_by_addr(sa->rc_channel, &sa->rc_bdaddr)) { | |
356 | err = -EADDRINUSE; | |
357 | } else { | |
358 | /* Save source address */ | |
94a86df0 | 359 | bacpy(&rfcomm_pi(sk)->src, &sa->rc_bdaddr); |
1da177e4 LT |
360 | rfcomm_pi(sk)->channel = sa->rc_channel; |
361 | sk->sk_state = BT_BOUND; | |
362 | } | |
363 | ||
95ca83f4 | 364 | write_unlock(&rfcomm_sk_list.lock); |
1da177e4 LT |
365 | |
366 | done: | |
367 | release_sock(sk); | |
368 | return err; | |
369 | } | |
370 | ||
371 | static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
372 | { | |
373 | struct sockaddr_rc *sa = (struct sockaddr_rc *) addr; | |
374 | struct sock *sk = sock->sk; | |
375 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
376 | int err = 0; | |
377 | ||
378 | BT_DBG("sk %p", sk); | |
379 | ||
6503d961 CG |
380 | if (alen < sizeof(struct sockaddr_rc) || |
381 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
382 | return -EINVAL; |
383 | ||
354d28d5 | 384 | lock_sock(sk); |
1da177e4 | 385 | |
354d28d5 MH |
386 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) { |
387 | err = -EBADFD; | |
388 | goto done; | |
389 | } | |
1da177e4 | 390 | |
354d28d5 MH |
391 | if (sk->sk_type != SOCK_STREAM) { |
392 | err = -EINVAL; | |
393 | goto done; | |
394 | } | |
1da177e4 LT |
395 | |
396 | sk->sk_state = BT_CONNECT; | |
94a86df0 | 397 | bacpy(&rfcomm_pi(sk)->dst, &sa->rc_bdaddr); |
1da177e4 LT |
398 | rfcomm_pi(sk)->channel = sa->rc_channel; |
399 | ||
9f2c8a03 MH |
400 | d->sec_level = rfcomm_pi(sk)->sec_level; |
401 | d->role_switch = rfcomm_pi(sk)->role_switch; | |
77db1980 | 402 | |
94a86df0 MH |
403 | err = rfcomm_dlc_open(d, &rfcomm_pi(sk)->src, &sa->rc_bdaddr, |
404 | sa->rc_channel); | |
1da177e4 LT |
405 | if (!err) |
406 | err = bt_sock_wait_state(sk, BT_CONNECTED, | |
407 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
408 | ||
354d28d5 | 409 | done: |
1da177e4 LT |
410 | release_sock(sk); |
411 | return err; | |
412 | } | |
413 | ||
414 | static int rfcomm_sock_listen(struct socket *sock, int backlog) | |
415 | { | |
416 | struct sock *sk = sock->sk; | |
417 | int err = 0; | |
418 | ||
419 | BT_DBG("sk %p backlog %d", sk, backlog); | |
420 | ||
421 | lock_sock(sk); | |
422 | ||
423 | if (sk->sk_state != BT_BOUND) { | |
424 | err = -EBADFD; | |
425 | goto done; | |
426 | } | |
427 | ||
354d28d5 MH |
428 | if (sk->sk_type != SOCK_STREAM) { |
429 | err = -EINVAL; | |
430 | goto done; | |
431 | } | |
432 | ||
1da177e4 | 433 | if (!rfcomm_pi(sk)->channel) { |
94a86df0 | 434 | bdaddr_t *src = &rfcomm_pi(sk)->src; |
1da177e4 LT |
435 | u8 channel; |
436 | ||
437 | err = -EINVAL; | |
438 | ||
95ca83f4 | 439 | write_lock(&rfcomm_sk_list.lock); |
1da177e4 LT |
440 | |
441 | for (channel = 1; channel < 31; channel++) | |
442 | if (!__rfcomm_get_sock_by_addr(channel, src)) { | |
443 | rfcomm_pi(sk)->channel = channel; | |
444 | err = 0; | |
445 | break; | |
446 | } | |
447 | ||
95ca83f4 | 448 | write_unlock(&rfcomm_sk_list.lock); |
1da177e4 LT |
449 | |
450 | if (err < 0) | |
451 | goto done; | |
452 | } | |
453 | ||
454 | sk->sk_max_ack_backlog = backlog; | |
455 | sk->sk_ack_backlog = 0; | |
456 | sk->sk_state = BT_LISTEN; | |
457 | ||
458 | done: | |
459 | release_sock(sk); | |
460 | return err; | |
461 | } | |
462 | ||
463 | static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int flags) | |
464 | { | |
465 | DECLARE_WAITQUEUE(wait, current); | |
466 | struct sock *sk = sock->sk, *nsk; | |
467 | long timeo; | |
468 | int err = 0; | |
469 | ||
dc2a0e20 | 470 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); |
1da177e4 | 471 | |
354d28d5 MH |
472 | if (sk->sk_type != SOCK_STREAM) { |
473 | err = -EINVAL; | |
474 | goto done; | |
475 | } | |
476 | ||
1da177e4 LT |
477 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
478 | ||
479 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
480 | ||
481 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 482 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
950e2d51 | 483 | while (1) { |
1da177e4 | 484 | set_current_state(TASK_INTERRUPTIBLE); |
950e2d51 PH |
485 | |
486 | if (sk->sk_state != BT_LISTEN) { | |
487 | err = -EBADFD; | |
1da177e4 LT |
488 | break; |
489 | } | |
490 | ||
950e2d51 PH |
491 | nsk = bt_accept_dequeue(sk, newsock); |
492 | if (nsk) | |
493 | break; | |
1da177e4 | 494 | |
950e2d51 PH |
495 | if (!timeo) { |
496 | err = -EAGAIN; | |
1da177e4 LT |
497 | break; |
498 | } | |
499 | ||
500 | if (signal_pending(current)) { | |
501 | err = sock_intr_errno(timeo); | |
502 | break; | |
503 | } | |
950e2d51 PH |
504 | |
505 | release_sock(sk); | |
506 | timeo = schedule_timeout(timeo); | |
dc2a0e20 | 507 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); |
1da177e4 | 508 | } |
950e2d51 | 509 | __set_current_state(TASK_RUNNING); |
aa395145 | 510 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
511 | |
512 | if (err) | |
513 | goto done; | |
514 | ||
515 | newsock->state = SS_CONNECTED; | |
516 | ||
517 | BT_DBG("new socket %p", nsk); | |
518 | ||
519 | done: | |
520 | release_sock(sk); | |
521 | return err; | |
522 | } | |
523 | ||
524 | static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) | |
525 | { | |
526 | struct sockaddr_rc *sa = (struct sockaddr_rc *) addr; | |
527 | struct sock *sk = sock->sk; | |
528 | ||
529 | BT_DBG("sock %p, sk %p", sock, sk); | |
530 | ||
9344a972 | 531 | memset(sa, 0, sizeof(*sa)); |
1da177e4 LT |
532 | sa->rc_family = AF_BLUETOOTH; |
533 | sa->rc_channel = rfcomm_pi(sk)->channel; | |
534 | if (peer) | |
94a86df0 | 535 | bacpy(&sa->rc_bdaddr, &rfcomm_pi(sk)->dst); |
1da177e4 | 536 | else |
94a86df0 | 537 | bacpy(&sa->rc_bdaddr, &rfcomm_pi(sk)->src); |
1da177e4 LT |
538 | |
539 | *len = sizeof(struct sockaddr_rc); | |
540 | return 0; | |
541 | } | |
542 | ||
543 | static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock, | |
544 | struct msghdr *msg, size_t len) | |
545 | { | |
546 | struct sock *sk = sock->sk; | |
547 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
548 | struct sk_buff *skb; | |
e793dcf0 | 549 | int sent; |
1da177e4 | 550 | |
bb23c0ab MH |
551 | if (test_bit(RFCOMM_DEFER_SETUP, &d->flags)) |
552 | return -ENOTCONN; | |
553 | ||
1da177e4 LT |
554 | if (msg->msg_flags & MSG_OOB) |
555 | return -EOPNOTSUPP; | |
556 | ||
557 | if (sk->sk_shutdown & SEND_SHUTDOWN) | |
558 | return -EPIPE; | |
559 | ||
560 | BT_DBG("sock %p, sk %p", sock, sk); | |
561 | ||
562 | lock_sock(sk); | |
563 | ||
e793dcf0 JH |
564 | sent = bt_sock_wait_ready(sk, msg->msg_flags); |
565 | if (sent) | |
566 | goto done; | |
567 | ||
1da177e4 LT |
568 | while (len) { |
569 | size_t size = min_t(size_t, len, d->mtu); | |
4d6a2188 | 570 | int err; |
8e87d142 | 571 | |
1da177e4 LT |
572 | skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE, |
573 | msg->msg_flags & MSG_DONTWAIT, &err); | |
91aa35a5 VS |
574 | if (!skb) { |
575 | if (sent == 0) | |
576 | sent = err; | |
1da177e4 | 577 | break; |
91aa35a5 | 578 | } |
1da177e4 LT |
579 | skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE); |
580 | ||
581 | err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size); | |
582 | if (err) { | |
583 | kfree_skb(skb); | |
4d6a2188 MH |
584 | if (sent == 0) |
585 | sent = err; | |
1da177e4 LT |
586 | break; |
587 | } | |
588 | ||
262038fc LAD |
589 | skb->priority = sk->sk_priority; |
590 | ||
1da177e4 LT |
591 | err = rfcomm_dlc_send(d, skb); |
592 | if (err < 0) { | |
593 | kfree_skb(skb); | |
4d6a2188 MH |
594 | if (sent == 0) |
595 | sent = err; | |
1da177e4 LT |
596 | break; |
597 | } | |
598 | ||
599 | sent += size; | |
600 | len -= size; | |
601 | } | |
602 | ||
e793dcf0 | 603 | done: |
1da177e4 LT |
604 | release_sock(sk); |
605 | ||
4d6a2188 | 606 | return sent; |
1da177e4 LT |
607 | } |
608 | ||
1da177e4 LT |
609 | static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
610 | struct msghdr *msg, size_t size, int flags) | |
611 | { | |
612 | struct sock *sk = sock->sk; | |
bb23c0ab | 613 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; |
3d7d01df | 614 | int len; |
1da177e4 | 615 | |
bb23c0ab MH |
616 | if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) { |
617 | rfcomm_dlc_accept(d); | |
618 | return 0; | |
619 | } | |
620 | ||
3d7d01df | 621 | len = bt_sock_stream_recvmsg(iocb, sock, msg, size, flags); |
1da177e4 LT |
622 | |
623 | lock_sock(sk); | |
3d7d01df MM |
624 | if (!(flags & MSG_PEEK) && len > 0) |
625 | atomic_sub(len, &sk->sk_rmem_alloc); | |
1da177e4 | 626 | |
1da177e4 LT |
627 | if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2)) |
628 | rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc); | |
1da177e4 | 629 | release_sock(sk); |
3d7d01df MM |
630 | |
631 | return len; | |
1da177e4 LT |
632 | } |
633 | ||
b7058842 | 634 | static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
1da177e4 LT |
635 | { |
636 | struct sock *sk = sock->sk; | |
637 | int err = 0; | |
638 | u32 opt; | |
639 | ||
640 | BT_DBG("sk %p", sk); | |
641 | ||
642 | lock_sock(sk); | |
643 | ||
644 | switch (optname) { | |
645 | case RFCOMM_LM: | |
646 | if (get_user(opt, (u32 __user *) optval)) { | |
647 | err = -EFAULT; | |
648 | break; | |
649 | } | |
650 | ||
9f2c8a03 MH |
651 | if (opt & RFCOMM_LM_AUTH) |
652 | rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW; | |
653 | if (opt & RFCOMM_LM_ENCRYPT) | |
654 | rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM; | |
655 | if (opt & RFCOMM_LM_SECURE) | |
656 | rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH; | |
657 | ||
658 | rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER); | |
1da177e4 LT |
659 | break; |
660 | ||
661 | default: | |
662 | err = -ENOPROTOOPT; | |
663 | break; | |
664 | } | |
665 | ||
666 | release_sock(sk); | |
667 | return err; | |
668 | } | |
669 | ||
b7058842 | 670 | static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
d58daf42 MH |
671 | { |
672 | struct sock *sk = sock->sk; | |
9f2c8a03 | 673 | struct bt_security sec; |
d0fad89d SB |
674 | int err = 0; |
675 | size_t len; | |
bb23c0ab | 676 | u32 opt; |
d58daf42 MH |
677 | |
678 | BT_DBG("sk %p", sk); | |
679 | ||
680 | if (level == SOL_RFCOMM) | |
681 | return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen); | |
682 | ||
0588d94f MH |
683 | if (level != SOL_BLUETOOTH) |
684 | return -ENOPROTOOPT; | |
685 | ||
d58daf42 MH |
686 | lock_sock(sk); |
687 | ||
688 | switch (optname) { | |
9f2c8a03 | 689 | case BT_SECURITY: |
0588d94f MH |
690 | if (sk->sk_type != SOCK_STREAM) { |
691 | err = -EINVAL; | |
692 | break; | |
693 | } | |
694 | ||
9f2c8a03 MH |
695 | sec.level = BT_SECURITY_LOW; |
696 | ||
697 | len = min_t(unsigned int, sizeof(sec), optlen); | |
698 | if (copy_from_user((char *) &sec, optval, len)) { | |
699 | err = -EFAULT; | |
700 | break; | |
701 | } | |
702 | ||
703 | if (sec.level > BT_SECURITY_HIGH) { | |
704 | err = -EINVAL; | |
705 | break; | |
706 | } | |
707 | ||
708 | rfcomm_pi(sk)->sec_level = sec.level; | |
709 | break; | |
710 | ||
bb23c0ab MH |
711 | case BT_DEFER_SETUP: |
712 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
713 | err = -EINVAL; | |
714 | break; | |
715 | } | |
716 | ||
717 | if (get_user(opt, (u32 __user *) optval)) { | |
718 | err = -EFAULT; | |
719 | break; | |
720 | } | |
721 | ||
c5daa683 GP |
722 | if (opt) |
723 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
724 | else | |
725 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
726 | ||
bb23c0ab MH |
727 | break; |
728 | ||
d58daf42 MH |
729 | default: |
730 | err = -ENOPROTOOPT; | |
731 | break; | |
732 | } | |
733 | ||
734 | release_sock(sk); | |
735 | return err; | |
736 | } | |
737 | ||
738 | static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) | |
1da177e4 LT |
739 | { |
740 | struct sock *sk = sock->sk; | |
1da177e4 | 741 | struct rfcomm_conninfo cinfo; |
8c1d787b | 742 | struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn; |
1da177e4 | 743 | int len, err = 0; |
9f2c8a03 | 744 | u32 opt; |
1da177e4 LT |
745 | |
746 | BT_DBG("sk %p", sk); | |
747 | ||
748 | if (get_user(len, optlen)) | |
749 | return -EFAULT; | |
750 | ||
751 | lock_sock(sk); | |
752 | ||
753 | switch (optname) { | |
754 | case RFCOMM_LM: | |
9f2c8a03 MH |
755 | switch (rfcomm_pi(sk)->sec_level) { |
756 | case BT_SECURITY_LOW: | |
757 | opt = RFCOMM_LM_AUTH; | |
758 | break; | |
759 | case BT_SECURITY_MEDIUM: | |
760 | opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT; | |
761 | break; | |
762 | case BT_SECURITY_HIGH: | |
763 | opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT | | |
764 | RFCOMM_LM_SECURE; | |
765 | break; | |
766 | default: | |
767 | opt = 0; | |
768 | break; | |
769 | } | |
770 | ||
771 | if (rfcomm_pi(sk)->role_switch) | |
772 | opt |= RFCOMM_LM_MASTER; | |
773 | ||
774 | if (put_user(opt, (u32 __user *) optval)) | |
1da177e4 LT |
775 | err = -EFAULT; |
776 | break; | |
777 | ||
778 | case RFCOMM_CONNINFO: | |
bb23c0ab MH |
779 | if (sk->sk_state != BT_CONNECTED && |
780 | !rfcomm_pi(sk)->dlc->defer_setup) { | |
1da177e4 LT |
781 | err = -ENOTCONN; |
782 | break; | |
783 | } | |
784 | ||
8d03e971 | 785 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
786 | cinfo.hci_handle = conn->hcon->handle; |
787 | memcpy(cinfo.dev_class, conn->hcon->dev_class, 3); | |
1da177e4 LT |
788 | |
789 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
790 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
791 | err = -EFAULT; | |
792 | ||
793 | break; | |
794 | ||
795 | default: | |
796 | err = -ENOPROTOOPT; | |
797 | break; | |
798 | } | |
799 | ||
800 | release_sock(sk); | |
d58daf42 MH |
801 | return err; |
802 | } | |
803 | ||
804 | static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
805 | { | |
806 | struct sock *sk = sock->sk; | |
9f2c8a03 | 807 | struct bt_security sec; |
d58daf42 MH |
808 | int len, err = 0; |
809 | ||
810 | BT_DBG("sk %p", sk); | |
811 | ||
812 | if (level == SOL_RFCOMM) | |
813 | return rfcomm_sock_getsockopt_old(sock, optname, optval, optlen); | |
814 | ||
0588d94f MH |
815 | if (level != SOL_BLUETOOTH) |
816 | return -ENOPROTOOPT; | |
817 | ||
d58daf42 MH |
818 | if (get_user(len, optlen)) |
819 | return -EFAULT; | |
820 | ||
821 | lock_sock(sk); | |
822 | ||
823 | switch (optname) { | |
9f2c8a03 | 824 | case BT_SECURITY: |
0588d94f MH |
825 | if (sk->sk_type != SOCK_STREAM) { |
826 | err = -EINVAL; | |
827 | break; | |
828 | } | |
829 | ||
9f2c8a03 | 830 | sec.level = rfcomm_pi(sk)->sec_level; |
9ad2de43 | 831 | sec.key_size = 0; |
9f2c8a03 MH |
832 | |
833 | len = min_t(unsigned int, len, sizeof(sec)); | |
834 | if (copy_to_user(optval, (char *) &sec, len)) | |
835 | err = -EFAULT; | |
836 | ||
837 | break; | |
838 | ||
bb23c0ab MH |
839 | case BT_DEFER_SETUP: |
840 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
841 | err = -EINVAL; | |
842 | break; | |
843 | } | |
844 | ||
c5daa683 GP |
845 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
846 | (u32 __user *) optval)) | |
bb23c0ab MH |
847 | err = -EFAULT; |
848 | ||
849 | break; | |
850 | ||
d58daf42 MH |
851 | default: |
852 | err = -ENOPROTOOPT; | |
853 | break; | |
854 | } | |
855 | ||
856 | release_sock(sk); | |
1da177e4 LT |
857 | return err; |
858 | } | |
859 | ||
860 | static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
861 | { | |
e19caae7 | 862 | struct sock *sk __maybe_unused = sock->sk; |
1da177e4 LT |
863 | int err; |
864 | ||
e19caae7 | 865 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); |
1da177e4 | 866 | |
3241ad82 | 867 | err = bt_sock_ioctl(sock, cmd, arg); |
1da177e4 | 868 | |
3241ad82 | 869 | if (err == -ENOIOCTLCMD) { |
1da177e4 | 870 | #ifdef CONFIG_BT_RFCOMM_TTY |
3241ad82 MH |
871 | lock_sock(sk); |
872 | err = rfcomm_dev_ioctl(sk, cmd, (void __user *) arg); | |
873 | release_sock(sk); | |
1da177e4 | 874 | #else |
3241ad82 | 875 | err = -EOPNOTSUPP; |
1da177e4 | 876 | #endif |
3241ad82 | 877 | } |
1da177e4 | 878 | |
1da177e4 LT |
879 | return err; |
880 | } | |
881 | ||
882 | static int rfcomm_sock_shutdown(struct socket *sock, int how) | |
883 | { | |
884 | struct sock *sk = sock->sk; | |
885 | int err = 0; | |
886 | ||
887 | BT_DBG("sock %p, sk %p", sock, sk); | |
888 | ||
285b4e90 AE |
889 | if (!sk) |
890 | return 0; | |
1da177e4 LT |
891 | |
892 | lock_sock(sk); | |
893 | if (!sk->sk_shutdown) { | |
894 | sk->sk_shutdown = SHUTDOWN_MASK; | |
895 | __rfcomm_sock_close(sk); | |
896 | ||
897 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
898 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
899 | } | |
900 | release_sock(sk); | |
901 | return err; | |
902 | } | |
903 | ||
904 | static int rfcomm_sock_release(struct socket *sock) | |
905 | { | |
906 | struct sock *sk = sock->sk; | |
907 | int err; | |
908 | ||
909 | BT_DBG("sock %p, sk %p", sock, sk); | |
910 | ||
911 | if (!sk) | |
912 | return 0; | |
913 | ||
914 | err = rfcomm_sock_shutdown(sock, 2); | |
915 | ||
916 | sock_orphan(sk); | |
917 | rfcomm_sock_kill(sk); | |
918 | return err; | |
919 | } | |
920 | ||
8e87d142 | 921 | /* ---- RFCOMM core layer callbacks ---- |
1da177e4 LT |
922 | * |
923 | * called under rfcomm_lock() | |
924 | */ | |
925 | int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d) | |
926 | { | |
927 | struct sock *sk, *parent; | |
928 | bdaddr_t src, dst; | |
929 | int result = 0; | |
930 | ||
931 | BT_DBG("session %p channel %d", s, channel); | |
932 | ||
933 | rfcomm_session_getaddr(s, &src, &dst); | |
934 | ||
935 | /* Check if we have socket listening on channel */ | |
936 | parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src); | |
937 | if (!parent) | |
938 | return 0; | |
939 | ||
eeb36656 GP |
940 | bh_lock_sock(parent); |
941 | ||
1da177e4 LT |
942 | /* Check for backlog size */ |
943 | if (sk_acceptq_is_full(parent)) { | |
8e87d142 | 944 | BT_DBG("backlog full %d", parent->sk_ack_backlog); |
1da177e4 LT |
945 | goto done; |
946 | } | |
947 | ||
3b1e0a65 | 948 | sk = rfcomm_sock_alloc(sock_net(parent), NULL, BTPROTO_RFCOMM, GFP_ATOMIC); |
1da177e4 LT |
949 | if (!sk) |
950 | goto done; | |
951 | ||
b5a30dda OP |
952 | bt_sock_reclassify_lock(sk, BTPROTO_RFCOMM); |
953 | ||
1da177e4 | 954 | rfcomm_sock_init(sk, parent); |
94a86df0 MH |
955 | bacpy(&rfcomm_pi(sk)->src, &src); |
956 | bacpy(&rfcomm_pi(sk)->dst, &dst); | |
1da177e4 LT |
957 | rfcomm_pi(sk)->channel = channel; |
958 | ||
959 | sk->sk_state = BT_CONFIG; | |
960 | bt_accept_enqueue(parent, sk); | |
961 | ||
962 | /* Accept connection and return socket DLC */ | |
963 | *d = rfcomm_pi(sk)->dlc; | |
964 | result = 1; | |
965 | ||
966 | done: | |
967 | bh_unlock_sock(parent); | |
bb23c0ab | 968 | |
c5daa683 | 969 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
bb23c0ab MH |
970 | parent->sk_state_change(parent); |
971 | ||
1da177e4 LT |
972 | return result; |
973 | } | |
974 | ||
aef7d97c | 975 | static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
976 | { |
977 | struct sock *sk; | |
1da177e4 | 978 | |
95ca83f4 | 979 | read_lock(&rfcomm_sk_list.lock); |
1da177e4 | 980 | |
b67bfe0d | 981 | sk_for_each(sk, &rfcomm_sk_list.head) { |
fcb73338 | 982 | seq_printf(f, "%pMR %pMR %d %d\n", |
94a86df0 | 983 | &rfcomm_pi(sk)->src, &rfcomm_pi(sk)->dst, |
fcb73338 | 984 | sk->sk_state, rfcomm_pi(sk)->channel); |
be9d1227 | 985 | } |
1da177e4 | 986 | |
95ca83f4 | 987 | read_unlock(&rfcomm_sk_list.lock); |
1da177e4 | 988 | |
aef7d97c | 989 | return 0; |
1da177e4 LT |
990 | } |
991 | ||
aef7d97c MH |
992 | static int rfcomm_sock_debugfs_open(struct inode *inode, struct file *file) |
993 | { | |
994 | return single_open(file, rfcomm_sock_debugfs_show, inode->i_private); | |
995 | } | |
996 | ||
997 | static const struct file_operations rfcomm_sock_debugfs_fops = { | |
998 | .open = rfcomm_sock_debugfs_open, | |
999 | .read = seq_read, | |
1000 | .llseek = seq_lseek, | |
1001 | .release = single_release, | |
1002 | }; | |
1003 | ||
1004 | static struct dentry *rfcomm_sock_debugfs; | |
1da177e4 | 1005 | |
90ddc4f0 | 1006 | static const struct proto_ops rfcomm_sock_ops = { |
1da177e4 LT |
1007 | .family = PF_BLUETOOTH, |
1008 | .owner = THIS_MODULE, | |
1009 | .release = rfcomm_sock_release, | |
1010 | .bind = rfcomm_sock_bind, | |
1011 | .connect = rfcomm_sock_connect, | |
1012 | .listen = rfcomm_sock_listen, | |
1013 | .accept = rfcomm_sock_accept, | |
1014 | .getname = rfcomm_sock_getname, | |
1015 | .sendmsg = rfcomm_sock_sendmsg, | |
1016 | .recvmsg = rfcomm_sock_recvmsg, | |
1017 | .shutdown = rfcomm_sock_shutdown, | |
1018 | .setsockopt = rfcomm_sock_setsockopt, | |
1019 | .getsockopt = rfcomm_sock_getsockopt, | |
1020 | .ioctl = rfcomm_sock_ioctl, | |
1021 | .poll = bt_sock_poll, | |
1022 | .socketpair = sock_no_socketpair, | |
1023 | .mmap = sock_no_mmap | |
1024 | }; | |
1025 | ||
ec1b4cf7 | 1026 | static const struct net_proto_family rfcomm_sock_family_ops = { |
1da177e4 LT |
1027 | .family = PF_BLUETOOTH, |
1028 | .owner = THIS_MODULE, | |
1029 | .create = rfcomm_sock_create | |
1030 | }; | |
1031 | ||
be9d1227 | 1032 | int __init rfcomm_init_sockets(void) |
1da177e4 LT |
1033 | { |
1034 | int err; | |
1035 | ||
1036 | err = proto_register(&rfcomm_proto, 0); | |
1037 | if (err < 0) | |
1038 | return err; | |
1039 | ||
1040 | err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops); | |
c6f5df16 MY |
1041 | if (err < 0) { |
1042 | BT_ERR("RFCOMM socket layer registration failed"); | |
1043 | goto error; | |
1044 | } | |
1045 | ||
b0316615 | 1046 | err = bt_procfs_init(&init_net, "rfcomm", &rfcomm_sk_list, NULL); |
c6f5df16 MY |
1047 | if (err < 0) { |
1048 | BT_ERR("Failed to create RFCOMM proc file"); | |
1049 | bt_sock_unregister(BTPROTO_RFCOMM); | |
1da177e4 | 1050 | goto error; |
c6f5df16 | 1051 | } |
1da177e4 | 1052 | |
1da177e4 LT |
1053 | BT_INFO("RFCOMM socket layer initialized"); |
1054 | ||
1120e4bf MH |
1055 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1056 | return 0; | |
1057 | ||
1058 | rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444, | |
1059 | bt_debugfs, NULL, | |
1060 | &rfcomm_sock_debugfs_fops); | |
1061 | ||
1da177e4 LT |
1062 | return 0; |
1063 | ||
1064 | error: | |
1da177e4 LT |
1065 | proto_unregister(&rfcomm_proto); |
1066 | return err; | |
1067 | } | |
1068 | ||
2f8362af | 1069 | void __exit rfcomm_cleanup_sockets(void) |
1da177e4 | 1070 | { |
c6f5df16 MY |
1071 | bt_procfs_cleanup(&init_net, "rfcomm"); |
1072 | ||
aef7d97c | 1073 | debugfs_remove(rfcomm_sock_debugfs); |
1da177e4 | 1074 | |
5e9d7f86 | 1075 | bt_sock_unregister(BTPROTO_RFCOMM); |
1da177e4 LT |
1076 | |
1077 | proto_unregister(&rfcomm_proto); | |
1078 | } |