Commit | Line | Data |
---|---|---|
bb58f747 GP |
1 | /* |
2 | BlueZ - Bluetooth protocol stack for Linux | |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
4 | Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org> | |
5 | Copyright (C) 2010 Google Inc. | |
6 | ||
7 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License version 2 as | |
11 | published by the Free Software Foundation; | |
12 | ||
13 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
14 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
15 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
16 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
17 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES | |
18 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
19 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
20 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
21 | ||
22 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, | |
23 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
24 | SOFTWARE IS DISCLAIMED. | |
25 | */ | |
26 | ||
27 | /* Bluetooth L2CAP sockets. */ | |
28 | ||
29 | #include <net/bluetooth/bluetooth.h> | |
33575df7 | 30 | #include <net/bluetooth/hci_core.h> |
bb58f747 GP |
31 | #include <net/bluetooth/l2cap.h> |
32 | ||
6ddc0485 | 33 | /* ---- L2CAP timers ---- */ |
bb58f747 GP |
34 | static void l2cap_sock_timeout(unsigned long arg) |
35 | { | |
36 | struct sock *sk = (struct sock *) arg; | |
37 | int reason; | |
38 | ||
39 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
40 | ||
41 | bh_lock_sock(sk); | |
42 | ||
43 | if (sock_owned_by_user(sk)) { | |
44 | /* sk is owned by user. Try again later */ | |
45 | l2cap_sock_set_timer(sk, HZ / 5); | |
46 | bh_unlock_sock(sk); | |
47 | sock_put(sk); | |
48 | return; | |
49 | } | |
50 | ||
51 | if (sk->sk_state == BT_CONNECTED || sk->sk_state == BT_CONFIG) | |
52 | reason = ECONNREFUSED; | |
53 | else if (sk->sk_state == BT_CONNECT && | |
54 | l2cap_pi(sk)->sec_level != BT_SECURITY_SDP) | |
55 | reason = ECONNREFUSED; | |
56 | else | |
57 | reason = ETIMEDOUT; | |
58 | ||
59 | __l2cap_sock_close(sk, reason); | |
60 | ||
61 | bh_unlock_sock(sk); | |
62 | ||
63 | l2cap_sock_kill(sk); | |
64 | sock_put(sk); | |
65 | } | |
66 | ||
6ddc0485 GP |
67 | void l2cap_sock_set_timer(struct sock *sk, long timeout) |
68 | { | |
69 | BT_DBG("sk %p state %d timeout %ld", sk, sk->sk_state, timeout); | |
70 | sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout); | |
71 | } | |
72 | ||
73 | void l2cap_sock_clear_timer(struct sock *sk) | |
74 | { | |
75 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
76 | sk_stop_timer(sk, &sk->sk_timer); | |
77 | } | |
78 | ||
af6bcd82 GP |
79 | static struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src) |
80 | { | |
81 | struct sock *sk; | |
82 | struct hlist_node *node; | |
83 | sk_for_each(sk, node, &l2cap_sk_list.head) | |
84 | if (l2cap_pi(sk)->sport == psm && !bacmp(&bt_sk(sk)->src, src)) | |
85 | goto found; | |
86 | sk = NULL; | |
87 | found: | |
88 | return sk; | |
89 | } | |
90 | ||
91 | static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) | |
92 | { | |
93 | struct sock *sk = sock->sk; | |
94 | struct sockaddr_l2 la; | |
95 | int len, err = 0; | |
96 | ||
97 | BT_DBG("sk %p", sk); | |
98 | ||
99 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
100 | return -EINVAL; | |
101 | ||
102 | memset(&la, 0, sizeof(la)); | |
103 | len = min_t(unsigned int, sizeof(la), alen); | |
104 | memcpy(&la, addr, len); | |
105 | ||
b62f328b | 106 | if (la.l2_cid && la.l2_psm) |
af6bcd82 GP |
107 | return -EINVAL; |
108 | ||
109 | lock_sock(sk); | |
110 | ||
111 | if (sk->sk_state != BT_OPEN) { | |
112 | err = -EBADFD; | |
113 | goto done; | |
114 | } | |
115 | ||
116 | if (la.l2_psm) { | |
117 | __u16 psm = __le16_to_cpu(la.l2_psm); | |
118 | ||
119 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
120 | if ((psm & 0x0101) != 0x0001) { | |
121 | err = -EINVAL; | |
122 | goto done; | |
123 | } | |
124 | ||
125 | /* Restrict usage of well-known PSMs */ | |
126 | if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) { | |
127 | err = -EACCES; | |
128 | goto done; | |
129 | } | |
130 | } | |
131 | ||
132 | write_lock_bh(&l2cap_sk_list.lock); | |
133 | ||
134 | if (la.l2_psm && __l2cap_get_sock_by_addr(la.l2_psm, &la.l2_bdaddr)) { | |
135 | err = -EADDRINUSE; | |
136 | } else { | |
137 | /* Save source address */ | |
138 | bacpy(&bt_sk(sk)->src, &la.l2_bdaddr); | |
139 | l2cap_pi(sk)->psm = la.l2_psm; | |
140 | l2cap_pi(sk)->sport = la.l2_psm; | |
141 | sk->sk_state = BT_BOUND; | |
142 | ||
143 | if (__le16_to_cpu(la.l2_psm) == 0x0001 || | |
144 | __le16_to_cpu(la.l2_psm) == 0x0003) | |
145 | l2cap_pi(sk)->sec_level = BT_SECURITY_SDP; | |
146 | } | |
147 | ||
b62f328b VT |
148 | if (la.l2_cid) |
149 | l2cap_pi(sk)->scid = la.l2_cid; | |
150 | ||
af6bcd82 GP |
151 | write_unlock_bh(&l2cap_sk_list.lock); |
152 | ||
153 | done: | |
154 | release_sock(sk); | |
155 | return err; | |
156 | } | |
157 | ||
4e34c50b GP |
158 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) |
159 | { | |
160 | struct sock *sk = sock->sk; | |
161 | struct sockaddr_l2 la; | |
162 | int len, err = 0; | |
163 | ||
164 | BT_DBG("sk %p", sk); | |
165 | ||
166 | if (!addr || alen < sizeof(addr->sa_family) || | |
167 | addr->sa_family != AF_BLUETOOTH) | |
168 | return -EINVAL; | |
169 | ||
170 | memset(&la, 0, sizeof(la)); | |
171 | len = min_t(unsigned int, sizeof(la), alen); | |
172 | memcpy(&la, addr, len); | |
173 | ||
acd7d370 | 174 | if (la.l2_cid && la.l2_psm) |
4e34c50b GP |
175 | return -EINVAL; |
176 | ||
177 | lock_sock(sk); | |
178 | ||
179 | if ((sk->sk_type == SOCK_SEQPACKET || sk->sk_type == SOCK_STREAM) | |
acd7d370 | 180 | && !(la.l2_psm || la.l2_cid)) { |
4e34c50b GP |
181 | err = -EINVAL; |
182 | goto done; | |
183 | } | |
184 | ||
185 | switch (l2cap_pi(sk)->mode) { | |
186 | case L2CAP_MODE_BASIC: | |
187 | break; | |
188 | case L2CAP_MODE_ERTM: | |
189 | case L2CAP_MODE_STREAMING: | |
190 | if (!disable_ertm) | |
191 | break; | |
192 | /* fall through */ | |
193 | default: | |
194 | err = -ENOTSUPP; | |
195 | goto done; | |
196 | } | |
197 | ||
198 | switch (sk->sk_state) { | |
199 | case BT_CONNECT: | |
200 | case BT_CONNECT2: | |
201 | case BT_CONFIG: | |
202 | /* Already connecting */ | |
203 | goto wait; | |
204 | ||
205 | case BT_CONNECTED: | |
206 | /* Already connected */ | |
207 | err = -EISCONN; | |
208 | goto done; | |
209 | ||
210 | case BT_OPEN: | |
211 | case BT_BOUND: | |
212 | /* Can connect */ | |
213 | break; | |
214 | ||
215 | default: | |
216 | err = -EBADFD; | |
217 | goto done; | |
218 | } | |
219 | ||
220 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
221 | if ((__le16_to_cpu(la.l2_psm) & 0x0101) != 0x0001 && | |
acd7d370 | 222 | sk->sk_type != SOCK_RAW && !la.l2_cid) { |
4e34c50b GP |
223 | err = -EINVAL; |
224 | goto done; | |
225 | } | |
226 | ||
227 | /* Set destination address and psm */ | |
228 | bacpy(&bt_sk(sk)->dst, &la.l2_bdaddr); | |
229 | l2cap_pi(sk)->psm = la.l2_psm; | |
acd7d370 | 230 | l2cap_pi(sk)->dcid = la.l2_cid; |
4e34c50b GP |
231 | |
232 | err = l2cap_do_connect(sk); | |
233 | if (err) | |
234 | goto done; | |
235 | ||
236 | wait: | |
237 | err = bt_sock_wait_state(sk, BT_CONNECTED, | |
238 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
239 | done: | |
240 | release_sock(sk); | |
241 | return err; | |
242 | } | |
243 | ||
af6bcd82 GP |
244 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
245 | { | |
246 | struct sock *sk = sock->sk; | |
247 | int err = 0; | |
248 | ||
249 | BT_DBG("sk %p backlog %d", sk, backlog); | |
250 | ||
251 | lock_sock(sk); | |
252 | ||
253 | if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) | |
254 | || sk->sk_state != BT_BOUND) { | |
255 | err = -EBADFD; | |
256 | goto done; | |
257 | } | |
258 | ||
259 | switch (l2cap_pi(sk)->mode) { | |
260 | case L2CAP_MODE_BASIC: | |
261 | break; | |
262 | case L2CAP_MODE_ERTM: | |
263 | case L2CAP_MODE_STREAMING: | |
264 | if (!disable_ertm) | |
265 | break; | |
266 | /* fall through */ | |
267 | default: | |
268 | err = -ENOTSUPP; | |
269 | goto done; | |
270 | } | |
271 | ||
b62f328b | 272 | if (!l2cap_pi(sk)->psm && !l2cap_pi(sk)->dcid) { |
af6bcd82 GP |
273 | bdaddr_t *src = &bt_sk(sk)->src; |
274 | u16 psm; | |
275 | ||
276 | err = -EINVAL; | |
277 | ||
278 | write_lock_bh(&l2cap_sk_list.lock); | |
279 | ||
280 | for (psm = 0x1001; psm < 0x1100; psm += 2) | |
281 | if (!__l2cap_get_sock_by_addr(cpu_to_le16(psm), src)) { | |
282 | l2cap_pi(sk)->psm = cpu_to_le16(psm); | |
283 | l2cap_pi(sk)->sport = cpu_to_le16(psm); | |
284 | err = 0; | |
285 | break; | |
286 | } | |
287 | ||
288 | write_unlock_bh(&l2cap_sk_list.lock); | |
289 | ||
290 | if (err < 0) | |
291 | goto done; | |
292 | } | |
293 | ||
294 | sk->sk_max_ack_backlog = backlog; | |
295 | sk->sk_ack_backlog = 0; | |
296 | sk->sk_state = BT_LISTEN; | |
297 | ||
298 | done: | |
299 | release_sock(sk); | |
300 | return err; | |
301 | } | |
302 | ||
c47b7c72 GP |
303 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags) |
304 | { | |
305 | DECLARE_WAITQUEUE(wait, current); | |
306 | struct sock *sk = sock->sk, *nsk; | |
307 | long timeo; | |
308 | int err = 0; | |
309 | ||
310 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
311 | ||
312 | if (sk->sk_state != BT_LISTEN) { | |
313 | err = -EBADFD; | |
314 | goto done; | |
315 | } | |
316 | ||
317 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); | |
318 | ||
319 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
320 | ||
321 | /* Wait for an incoming connection. (wake-one). */ | |
322 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
323 | while (!(nsk = bt_accept_dequeue(sk, newsock))) { | |
324 | set_current_state(TASK_INTERRUPTIBLE); | |
325 | if (!timeo) { | |
326 | err = -EAGAIN; | |
327 | break; | |
328 | } | |
329 | ||
330 | release_sock(sk); | |
331 | timeo = schedule_timeout(timeo); | |
332 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
333 | ||
334 | if (sk->sk_state != BT_LISTEN) { | |
335 | err = -EBADFD; | |
336 | break; | |
337 | } | |
338 | ||
339 | if (signal_pending(current)) { | |
340 | err = sock_intr_errno(timeo); | |
341 | break; | |
342 | } | |
343 | } | |
344 | set_current_state(TASK_RUNNING); | |
345 | remove_wait_queue(sk_sleep(sk), &wait); | |
346 | ||
347 | if (err) | |
348 | goto done; | |
349 | ||
350 | newsock->state = SS_CONNECTED; | |
351 | ||
352 | BT_DBG("new socket %p", nsk); | |
353 | ||
354 | done: | |
355 | release_sock(sk); | |
356 | return err; | |
357 | } | |
358 | ||
d7175d55 GP |
359 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) |
360 | { | |
361 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
362 | struct sock *sk = sock->sk; | |
363 | ||
364 | BT_DBG("sock %p, sk %p", sock, sk); | |
365 | ||
366 | addr->sa_family = AF_BLUETOOTH; | |
367 | *len = sizeof(struct sockaddr_l2); | |
368 | ||
369 | if (peer) { | |
370 | la->l2_psm = l2cap_pi(sk)->psm; | |
371 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst); | |
372 | la->l2_cid = cpu_to_le16(l2cap_pi(sk)->dcid); | |
373 | } else { | |
374 | la->l2_psm = l2cap_pi(sk)->sport; | |
375 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->src); | |
376 | la->l2_cid = cpu_to_le16(l2cap_pi(sk)->scid); | |
377 | } | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
99f4808d GP |
382 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
383 | { | |
384 | struct sock *sk = sock->sk; | |
385 | struct l2cap_options opts; | |
386 | struct l2cap_conninfo cinfo; | |
387 | int len, err = 0; | |
388 | u32 opt; | |
389 | ||
390 | BT_DBG("sk %p", sk); | |
391 | ||
392 | if (get_user(len, optlen)) | |
393 | return -EFAULT; | |
394 | ||
395 | lock_sock(sk); | |
396 | ||
397 | switch (optname) { | |
398 | case L2CAP_OPTIONS: | |
e3fb592b | 399 | memset(&opts, 0, sizeof(opts)); |
99f4808d GP |
400 | opts.imtu = l2cap_pi(sk)->imtu; |
401 | opts.omtu = l2cap_pi(sk)->omtu; | |
402 | opts.flush_to = l2cap_pi(sk)->flush_to; | |
403 | opts.mode = l2cap_pi(sk)->mode; | |
404 | opts.fcs = l2cap_pi(sk)->fcs; | |
405 | opts.max_tx = l2cap_pi(sk)->max_tx; | |
406 | opts.txwin_size = (__u16)l2cap_pi(sk)->tx_win; | |
407 | ||
408 | len = min_t(unsigned int, len, sizeof(opts)); | |
409 | if (copy_to_user(optval, (char *) &opts, len)) | |
410 | err = -EFAULT; | |
411 | ||
412 | break; | |
413 | ||
414 | case L2CAP_LM: | |
415 | switch (l2cap_pi(sk)->sec_level) { | |
416 | case BT_SECURITY_LOW: | |
417 | opt = L2CAP_LM_AUTH; | |
418 | break; | |
419 | case BT_SECURITY_MEDIUM: | |
420 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
421 | break; | |
422 | case BT_SECURITY_HIGH: | |
423 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
424 | L2CAP_LM_SECURE; | |
425 | break; | |
426 | default: | |
427 | opt = 0; | |
428 | break; | |
429 | } | |
430 | ||
431 | if (l2cap_pi(sk)->role_switch) | |
432 | opt |= L2CAP_LM_MASTER; | |
433 | ||
434 | if (l2cap_pi(sk)->force_reliable) | |
435 | opt |= L2CAP_LM_RELIABLE; | |
436 | ||
437 | if (put_user(opt, (u32 __user *) optval)) | |
438 | err = -EFAULT; | |
439 | break; | |
440 | ||
441 | case L2CAP_CONNINFO: | |
442 | if (sk->sk_state != BT_CONNECTED && | |
443 | !(sk->sk_state == BT_CONNECT2 && | |
444 | bt_sk(sk)->defer_setup)) { | |
445 | err = -ENOTCONN; | |
446 | break; | |
447 | } | |
448 | ||
449 | cinfo.hci_handle = l2cap_pi(sk)->conn->hcon->handle; | |
450 | memcpy(cinfo.dev_class, l2cap_pi(sk)->conn->hcon->dev_class, 3); | |
451 | ||
452 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
453 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
454 | err = -EFAULT; | |
455 | ||
456 | break; | |
457 | ||
458 | default: | |
459 | err = -ENOPROTOOPT; | |
460 | break; | |
461 | } | |
462 | ||
463 | release_sock(sk); | |
464 | return err; | |
465 | } | |
466 | ||
467 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
468 | { | |
469 | struct sock *sk = sock->sk; | |
470 | struct bt_security sec; | |
471 | int len, err = 0; | |
472 | ||
473 | BT_DBG("sk %p", sk); | |
474 | ||
475 | if (level == SOL_L2CAP) | |
476 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
477 | ||
478 | if (level != SOL_BLUETOOTH) | |
479 | return -ENOPROTOOPT; | |
480 | ||
481 | if (get_user(len, optlen)) | |
482 | return -EFAULT; | |
483 | ||
484 | lock_sock(sk); | |
485 | ||
486 | switch (optname) { | |
487 | case BT_SECURITY: | |
488 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
489 | && sk->sk_type != SOCK_RAW) { | |
490 | err = -EINVAL; | |
491 | break; | |
492 | } | |
493 | ||
494 | sec.level = l2cap_pi(sk)->sec_level; | |
495 | ||
496 | len = min_t(unsigned int, len, sizeof(sec)); | |
497 | if (copy_to_user(optval, (char *) &sec, len)) | |
498 | err = -EFAULT; | |
499 | ||
500 | break; | |
501 | ||
502 | case BT_DEFER_SETUP: | |
503 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
504 | err = -EINVAL; | |
505 | break; | |
506 | } | |
507 | ||
508 | if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval)) | |
509 | err = -EFAULT; | |
510 | ||
511 | break; | |
512 | ||
513 | case BT_FLUSHABLE: | |
514 | if (put_user(l2cap_pi(sk)->flushable, (u32 __user *) optval)) | |
515 | err = -EFAULT; | |
516 | ||
517 | break; | |
518 | ||
519 | default: | |
520 | err = -ENOPROTOOPT; | |
521 | break; | |
522 | } | |
523 | ||
524 | release_sock(sk); | |
525 | return err; | |
526 | } | |
527 | ||
33575df7 GP |
528 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
529 | { | |
530 | struct sock *sk = sock->sk; | |
531 | struct l2cap_options opts; | |
532 | int len, err = 0; | |
533 | u32 opt; | |
534 | ||
535 | BT_DBG("sk %p", sk); | |
536 | ||
537 | lock_sock(sk); | |
538 | ||
539 | switch (optname) { | |
540 | case L2CAP_OPTIONS: | |
541 | if (sk->sk_state == BT_CONNECTED) { | |
542 | err = -EINVAL; | |
543 | break; | |
544 | } | |
545 | ||
546 | opts.imtu = l2cap_pi(sk)->imtu; | |
547 | opts.omtu = l2cap_pi(sk)->omtu; | |
548 | opts.flush_to = l2cap_pi(sk)->flush_to; | |
549 | opts.mode = l2cap_pi(sk)->mode; | |
550 | opts.fcs = l2cap_pi(sk)->fcs; | |
551 | opts.max_tx = l2cap_pi(sk)->max_tx; | |
552 | opts.txwin_size = (__u16)l2cap_pi(sk)->tx_win; | |
553 | ||
554 | len = min_t(unsigned int, sizeof(opts), optlen); | |
555 | if (copy_from_user((char *) &opts, optval, len)) { | |
556 | err = -EFAULT; | |
557 | break; | |
558 | } | |
559 | ||
560 | if (opts.txwin_size > L2CAP_DEFAULT_TX_WINDOW) { | |
561 | err = -EINVAL; | |
562 | break; | |
563 | } | |
564 | ||
565 | l2cap_pi(sk)->mode = opts.mode; | |
566 | switch (l2cap_pi(sk)->mode) { | |
567 | case L2CAP_MODE_BASIC: | |
568 | l2cap_pi(sk)->conf_state &= ~L2CAP_CONF_STATE2_DEVICE; | |
569 | break; | |
570 | case L2CAP_MODE_ERTM: | |
571 | case L2CAP_MODE_STREAMING: | |
572 | if (!disable_ertm) | |
573 | break; | |
574 | /* fall through */ | |
575 | default: | |
576 | err = -EINVAL; | |
577 | break; | |
578 | } | |
579 | ||
580 | l2cap_pi(sk)->imtu = opts.imtu; | |
581 | l2cap_pi(sk)->omtu = opts.omtu; | |
582 | l2cap_pi(sk)->fcs = opts.fcs; | |
583 | l2cap_pi(sk)->max_tx = opts.max_tx; | |
584 | l2cap_pi(sk)->tx_win = (__u8)opts.txwin_size; | |
585 | break; | |
586 | ||
587 | case L2CAP_LM: | |
588 | if (get_user(opt, (u32 __user *) optval)) { | |
589 | err = -EFAULT; | |
590 | break; | |
591 | } | |
592 | ||
593 | if (opt & L2CAP_LM_AUTH) | |
594 | l2cap_pi(sk)->sec_level = BT_SECURITY_LOW; | |
595 | if (opt & L2CAP_LM_ENCRYPT) | |
596 | l2cap_pi(sk)->sec_level = BT_SECURITY_MEDIUM; | |
597 | if (opt & L2CAP_LM_SECURE) | |
598 | l2cap_pi(sk)->sec_level = BT_SECURITY_HIGH; | |
599 | ||
600 | l2cap_pi(sk)->role_switch = (opt & L2CAP_LM_MASTER); | |
601 | l2cap_pi(sk)->force_reliable = (opt & L2CAP_LM_RELIABLE); | |
602 | break; | |
603 | ||
604 | default: | |
605 | err = -ENOPROTOOPT; | |
606 | break; | |
607 | } | |
608 | ||
609 | release_sock(sk); | |
610 | return err; | |
611 | } | |
612 | ||
613 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) | |
614 | { | |
615 | struct sock *sk = sock->sk; | |
616 | struct bt_security sec; | |
617 | int len, err = 0; | |
618 | u32 opt; | |
619 | ||
620 | BT_DBG("sk %p", sk); | |
621 | ||
622 | if (level == SOL_L2CAP) | |
623 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
624 | ||
625 | if (level != SOL_BLUETOOTH) | |
626 | return -ENOPROTOOPT; | |
627 | ||
628 | lock_sock(sk); | |
629 | ||
630 | switch (optname) { | |
631 | case BT_SECURITY: | |
632 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
633 | && sk->sk_type != SOCK_RAW) { | |
634 | err = -EINVAL; | |
635 | break; | |
636 | } | |
637 | ||
638 | sec.level = BT_SECURITY_LOW; | |
639 | ||
640 | len = min_t(unsigned int, sizeof(sec), optlen); | |
641 | if (copy_from_user((char *) &sec, optval, len)) { | |
642 | err = -EFAULT; | |
643 | break; | |
644 | } | |
645 | ||
646 | if (sec.level < BT_SECURITY_LOW || | |
647 | sec.level > BT_SECURITY_HIGH) { | |
648 | err = -EINVAL; | |
649 | break; | |
650 | } | |
651 | ||
652 | l2cap_pi(sk)->sec_level = sec.level; | |
653 | break; | |
654 | ||
655 | case BT_DEFER_SETUP: | |
656 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
657 | err = -EINVAL; | |
658 | break; | |
659 | } | |
660 | ||
661 | if (get_user(opt, (u32 __user *) optval)) { | |
662 | err = -EFAULT; | |
663 | break; | |
664 | } | |
665 | ||
666 | bt_sk(sk)->defer_setup = opt; | |
667 | break; | |
668 | ||
669 | case BT_FLUSHABLE: | |
670 | if (get_user(opt, (u32 __user *) optval)) { | |
671 | err = -EFAULT; | |
672 | break; | |
673 | } | |
674 | ||
675 | if (opt > BT_FLUSHABLE_ON) { | |
676 | err = -EINVAL; | |
677 | break; | |
678 | } | |
679 | ||
680 | if (opt == BT_FLUSHABLE_OFF) { | |
681 | struct l2cap_conn *conn = l2cap_pi(sk)->conn; | |
682 | /* proceed futher only when we have l2cap_conn and | |
683 | No Flush support in the LM */ | |
684 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
685 | err = -EINVAL; | |
686 | break; | |
687 | } | |
688 | } | |
689 | ||
690 | l2cap_pi(sk)->flushable = opt; | |
691 | break; | |
692 | ||
693 | default: | |
694 | err = -ENOPROTOOPT; | |
695 | break; | |
696 | } | |
697 | ||
698 | release_sock(sk); | |
699 | return err; | |
700 | } | |
fd83ccdb GP |
701 | |
702 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len) | |
703 | { | |
704 | struct sock *sk = sock->sk; | |
705 | struct l2cap_pinfo *pi = l2cap_pi(sk); | |
706 | struct sk_buff *skb; | |
707 | u16 control; | |
708 | int err; | |
709 | ||
710 | BT_DBG("sock %p, sk %p", sock, sk); | |
711 | ||
712 | err = sock_error(sk); | |
713 | if (err) | |
714 | return err; | |
715 | ||
716 | if (msg->msg_flags & MSG_OOB) | |
717 | return -EOPNOTSUPP; | |
718 | ||
719 | lock_sock(sk); | |
720 | ||
721 | if (sk->sk_state != BT_CONNECTED) { | |
722 | err = -ENOTCONN; | |
723 | goto done; | |
724 | } | |
725 | ||
726 | /* Connectionless channel */ | |
727 | if (sk->sk_type == SOCK_DGRAM) { | |
728 | skb = l2cap_create_connless_pdu(sk, msg, len); | |
729 | if (IS_ERR(skb)) { | |
730 | err = PTR_ERR(skb); | |
731 | } else { | |
732 | l2cap_do_send(sk, skb); | |
733 | err = len; | |
734 | } | |
735 | goto done; | |
736 | } | |
737 | ||
738 | switch (pi->mode) { | |
739 | case L2CAP_MODE_BASIC: | |
740 | /* Check outgoing MTU */ | |
741 | if (len > pi->omtu) { | |
742 | err = -EMSGSIZE; | |
743 | goto done; | |
744 | } | |
745 | ||
746 | /* Create a basic PDU */ | |
747 | skb = l2cap_create_basic_pdu(sk, msg, len); | |
748 | if (IS_ERR(skb)) { | |
749 | err = PTR_ERR(skb); | |
750 | goto done; | |
751 | } | |
752 | ||
753 | l2cap_do_send(sk, skb); | |
754 | err = len; | |
755 | break; | |
756 | ||
757 | case L2CAP_MODE_ERTM: | |
758 | case L2CAP_MODE_STREAMING: | |
759 | /* Entire SDU fits into one PDU */ | |
760 | if (len <= pi->remote_mps) { | |
761 | control = L2CAP_SDU_UNSEGMENTED; | |
762 | skb = l2cap_create_iframe_pdu(sk, msg, len, control, 0); | |
763 | if (IS_ERR(skb)) { | |
764 | err = PTR_ERR(skb); | |
765 | goto done; | |
766 | } | |
767 | __skb_queue_tail(TX_QUEUE(sk), skb); | |
768 | ||
769 | if (sk->sk_send_head == NULL) | |
770 | sk->sk_send_head = skb; | |
771 | ||
772 | } else { | |
773 | /* Segment SDU into multiples PDUs */ | |
774 | err = l2cap_sar_segment_sdu(sk, msg, len); | |
775 | if (err < 0) | |
776 | goto done; | |
777 | } | |
778 | ||
779 | if (pi->mode == L2CAP_MODE_STREAMING) { | |
780 | l2cap_streaming_send(sk); | |
781 | } else { | |
782 | if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) && | |
783 | (pi->conn_state & L2CAP_CONN_WAIT_F)) { | |
784 | err = len; | |
785 | break; | |
786 | } | |
787 | err = l2cap_ertm_send(sk); | |
788 | } | |
789 | ||
790 | if (err >= 0) | |
791 | err = len; | |
792 | break; | |
793 | ||
794 | default: | |
795 | BT_DBG("bad state %1.1x", pi->mode); | |
796 | err = -EBADFD; | |
797 | } | |
798 | ||
799 | done: | |
800 | release_sock(sk); | |
801 | return err; | |
802 | } | |
33575df7 | 803 | |
68983259 GP |
804 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) |
805 | { | |
806 | struct sock *sk = sock->sk; | |
807 | ||
808 | lock_sock(sk); | |
809 | ||
810 | if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) { | |
811 | struct l2cap_conn_rsp rsp; | |
812 | struct l2cap_conn *conn = l2cap_pi(sk)->conn; | |
813 | u8 buf[128]; | |
814 | ||
815 | sk->sk_state = BT_CONFIG; | |
816 | ||
817 | rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid); | |
818 | rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid); | |
819 | rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS); | |
820 | rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO); | |
821 | l2cap_send_cmd(l2cap_pi(sk)->conn, l2cap_pi(sk)->ident, | |
822 | L2CAP_CONN_RSP, sizeof(rsp), &rsp); | |
823 | ||
824 | if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) { | |
825 | release_sock(sk); | |
826 | return 0; | |
827 | } | |
828 | ||
829 | l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT; | |
830 | l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ, | |
831 | l2cap_build_conf_req(sk, buf), buf); | |
832 | l2cap_pi(sk)->num_conf_req++; | |
833 | ||
834 | release_sock(sk); | |
835 | return 0; | |
836 | } | |
837 | ||
838 | release_sock(sk); | |
839 | ||
840 | if (sock->type == SOCK_STREAM) | |
841 | return bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); | |
842 | ||
843 | return bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
844 | } | |
845 | ||
05fc1576 GP |
846 | /* Kill socket (only if zapped and orphan) |
847 | * Must be called on unlocked socket. | |
848 | */ | |
849 | void l2cap_sock_kill(struct sock *sk) | |
850 | { | |
851 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
852 | return; | |
853 | ||
854 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
855 | ||
856 | /* Kill poor orphan */ | |
857 | bt_sock_unlink(&l2cap_sk_list, sk); | |
858 | sock_set_flag(sk, SOCK_DEAD); | |
859 | sock_put(sk); | |
860 | } | |
861 | ||
6de0702b GP |
862 | /* Must be called on unlocked socket. */ |
863 | static void l2cap_sock_close(struct sock *sk) | |
864 | { | |
865 | l2cap_sock_clear_timer(sk); | |
866 | lock_sock(sk); | |
867 | __l2cap_sock_close(sk, ECONNRESET); | |
868 | release_sock(sk); | |
869 | l2cap_sock_kill(sk); | |
870 | } | |
871 | ||
872 | static void l2cap_sock_cleanup_listen(struct sock *parent) | |
873 | { | |
874 | struct sock *sk; | |
875 | ||
876 | BT_DBG("parent %p", parent); | |
877 | ||
878 | /* Close not yet accepted channels */ | |
879 | while ((sk = bt_accept_dequeue(parent, NULL))) | |
880 | l2cap_sock_close(sk); | |
881 | ||
882 | parent->sk_state = BT_CLOSED; | |
883 | sock_set_flag(parent, SOCK_ZAPPED); | |
884 | } | |
885 | ||
886 | void __l2cap_sock_close(struct sock *sk, int reason) | |
887 | { | |
5589fa9c VT |
888 | struct l2cap_conn *conn = l2cap_pi(sk)->conn; |
889 | ||
6de0702b GP |
890 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
891 | ||
892 | switch (sk->sk_state) { | |
893 | case BT_LISTEN: | |
894 | l2cap_sock_cleanup_listen(sk); | |
895 | break; | |
896 | ||
897 | case BT_CONNECTED: | |
898 | case BT_CONFIG: | |
5589fa9c VT |
899 | if ((sk->sk_type == SOCK_SEQPACKET || |
900 | sk->sk_type == SOCK_STREAM) && | |
901 | conn->hcon->type == ACL_LINK) { | |
6de0702b GP |
902 | l2cap_sock_set_timer(sk, sk->sk_sndtimeo); |
903 | l2cap_send_disconn_req(conn, sk, reason); | |
904 | } else | |
905 | l2cap_chan_del(sk, reason); | |
906 | break; | |
907 | ||
908 | case BT_CONNECT2: | |
5589fa9c VT |
909 | if ((sk->sk_type == SOCK_SEQPACKET || |
910 | sk->sk_type == SOCK_STREAM) && | |
911 | conn->hcon->type == ACL_LINK) { | |
6de0702b GP |
912 | struct l2cap_conn_rsp rsp; |
913 | __u16 result; | |
914 | ||
915 | if (bt_sk(sk)->defer_setup) | |
916 | result = L2CAP_CR_SEC_BLOCK; | |
917 | else | |
918 | result = L2CAP_CR_BAD_PSM; | |
919 | ||
920 | rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid); | |
921 | rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid); | |
922 | rsp.result = cpu_to_le16(result); | |
923 | rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO); | |
924 | l2cap_send_cmd(conn, l2cap_pi(sk)->ident, | |
925 | L2CAP_CONN_RSP, sizeof(rsp), &rsp); | |
926 | } else | |
927 | l2cap_chan_del(sk, reason); | |
928 | break; | |
929 | ||
930 | case BT_CONNECT: | |
931 | case BT_DISCONN: | |
932 | l2cap_chan_del(sk, reason); | |
933 | break; | |
934 | ||
935 | default: | |
936 | sock_set_flag(sk, SOCK_ZAPPED); | |
937 | break; | |
938 | } | |
939 | } | |
940 | ||
dcba0dba GP |
941 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
942 | { | |
943 | struct sock *sk = sock->sk; | |
944 | int err = 0; | |
945 | ||
946 | BT_DBG("sock %p, sk %p", sock, sk); | |
947 | ||
948 | if (!sk) | |
949 | return 0; | |
950 | ||
951 | lock_sock(sk); | |
952 | if (!sk->sk_shutdown) { | |
953 | if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) | |
954 | err = __l2cap_wait_ack(sk); | |
955 | ||
956 | sk->sk_shutdown = SHUTDOWN_MASK; | |
957 | l2cap_sock_clear_timer(sk); | |
958 | __l2cap_sock_close(sk, 0); | |
959 | ||
960 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
961 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
962 | sk->sk_lingertime); | |
963 | } | |
964 | ||
965 | if (!err && sk->sk_err) | |
966 | err = -sk->sk_err; | |
967 | ||
968 | release_sock(sk); | |
969 | return err; | |
970 | } | |
971 | ||
554f05bb GP |
972 | static int l2cap_sock_release(struct socket *sock) |
973 | { | |
974 | struct sock *sk = sock->sk; | |
975 | int err; | |
976 | ||
977 | BT_DBG("sock %p, sk %p", sock, sk); | |
978 | ||
979 | if (!sk) | |
980 | return 0; | |
981 | ||
982 | err = l2cap_sock_shutdown(sock, 2); | |
983 | ||
984 | sock_orphan(sk); | |
985 | l2cap_sock_kill(sk); | |
986 | return err; | |
987 | } | |
988 | ||
bb58f747 GP |
989 | static void l2cap_sock_destruct(struct sock *sk) |
990 | { | |
991 | BT_DBG("sk %p", sk); | |
992 | ||
993 | skb_queue_purge(&sk->sk_receive_queue); | |
994 | skb_queue_purge(&sk->sk_write_queue); | |
995 | } | |
996 | ||
997 | void l2cap_sock_init(struct sock *sk, struct sock *parent) | |
998 | { | |
999 | struct l2cap_pinfo *pi = l2cap_pi(sk); | |
1000 | ||
1001 | BT_DBG("sk %p", sk); | |
1002 | ||
1003 | if (parent) { | |
1004 | sk->sk_type = parent->sk_type; | |
1005 | bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup; | |
1006 | ||
1007 | pi->imtu = l2cap_pi(parent)->imtu; | |
1008 | pi->omtu = l2cap_pi(parent)->omtu; | |
1009 | pi->conf_state = l2cap_pi(parent)->conf_state; | |
1010 | pi->mode = l2cap_pi(parent)->mode; | |
1011 | pi->fcs = l2cap_pi(parent)->fcs; | |
1012 | pi->max_tx = l2cap_pi(parent)->max_tx; | |
1013 | pi->tx_win = l2cap_pi(parent)->tx_win; | |
1014 | pi->sec_level = l2cap_pi(parent)->sec_level; | |
1015 | pi->role_switch = l2cap_pi(parent)->role_switch; | |
1016 | pi->force_reliable = l2cap_pi(parent)->force_reliable; | |
1017 | pi->flushable = l2cap_pi(parent)->flushable; | |
1018 | } else { | |
1019 | pi->imtu = L2CAP_DEFAULT_MTU; | |
1020 | pi->omtu = 0; | |
1021 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { | |
1022 | pi->mode = L2CAP_MODE_ERTM; | |
1023 | pi->conf_state |= L2CAP_CONF_STATE2_DEVICE; | |
1024 | } else { | |
1025 | pi->mode = L2CAP_MODE_BASIC; | |
1026 | } | |
1027 | pi->max_tx = L2CAP_DEFAULT_MAX_TX; | |
1028 | pi->fcs = L2CAP_FCS_CRC16; | |
1029 | pi->tx_win = L2CAP_DEFAULT_TX_WINDOW; | |
1030 | pi->sec_level = BT_SECURITY_LOW; | |
1031 | pi->role_switch = 0; | |
1032 | pi->force_reliable = 0; | |
1033 | pi->flushable = BT_FLUSHABLE_OFF; | |
1034 | } | |
1035 | ||
1036 | /* Default config options */ | |
1037 | pi->conf_len = 0; | |
1038 | pi->flush_to = L2CAP_DEFAULT_FLUSH_TO; | |
1039 | skb_queue_head_init(TX_QUEUE(sk)); | |
1040 | skb_queue_head_init(SREJ_QUEUE(sk)); | |
1041 | skb_queue_head_init(BUSY_QUEUE(sk)); | |
1042 | INIT_LIST_HEAD(SREJ_LIST(sk)); | |
1043 | } | |
1044 | ||
1045 | static struct proto l2cap_proto = { | |
1046 | .name = "L2CAP", | |
1047 | .owner = THIS_MODULE, | |
1048 | .obj_size = sizeof(struct l2cap_pinfo) | |
1049 | }; | |
1050 | ||
1051 | struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) | |
1052 | { | |
1053 | struct sock *sk; | |
1054 | ||
1055 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
1056 | if (!sk) | |
1057 | return NULL; | |
1058 | ||
1059 | sock_init_data(sock, sk); | |
1060 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1061 | ||
1062 | sk->sk_destruct = l2cap_sock_destruct; | |
1063 | sk->sk_sndtimeo = msecs_to_jiffies(L2CAP_CONN_TIMEOUT); | |
1064 | ||
1065 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1066 | ||
1067 | sk->sk_protocol = proto; | |
1068 | sk->sk_state = BT_OPEN; | |
1069 | ||
1070 | setup_timer(&sk->sk_timer, l2cap_sock_timeout, (unsigned long) sk); | |
1071 | ||
1072 | bt_sock_link(&l2cap_sk_list, sk); | |
1073 | return sk; | |
1074 | } | |
1075 | ||
1076 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1077 | int kern) | |
1078 | { | |
1079 | struct sock *sk; | |
1080 | ||
1081 | BT_DBG("sock %p", sock); | |
1082 | ||
1083 | sock->state = SS_UNCONNECTED; | |
1084 | ||
1085 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
1086 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) | |
1087 | return -ESOCKTNOSUPPORT; | |
1088 | ||
1089 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1090 | return -EPERM; | |
1091 | ||
1092 | sock->ops = &l2cap_sock_ops; | |
1093 | ||
1094 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1095 | if (!sk) | |
1096 | return -ENOMEM; | |
1097 | ||
1098 | l2cap_sock_init(sk, NULL); | |
1099 | return 0; | |
1100 | } | |
1101 | ||
65390587 GP |
1102 | const struct proto_ops l2cap_sock_ops = { |
1103 | .family = PF_BLUETOOTH, | |
1104 | .owner = THIS_MODULE, | |
1105 | .release = l2cap_sock_release, | |
1106 | .bind = l2cap_sock_bind, | |
1107 | .connect = l2cap_sock_connect, | |
1108 | .listen = l2cap_sock_listen, | |
1109 | .accept = l2cap_sock_accept, | |
1110 | .getname = l2cap_sock_getname, | |
1111 | .sendmsg = l2cap_sock_sendmsg, | |
1112 | .recvmsg = l2cap_sock_recvmsg, | |
1113 | .poll = bt_sock_poll, | |
1114 | .ioctl = bt_sock_ioctl, | |
1115 | .mmap = sock_no_mmap, | |
1116 | .socketpair = sock_no_socketpair, | |
1117 | .shutdown = l2cap_sock_shutdown, | |
1118 | .setsockopt = l2cap_sock_setsockopt, | |
1119 | .getsockopt = l2cap_sock_getsockopt | |
1120 | }; | |
1121 | ||
bb58f747 GP |
1122 | static const struct net_proto_family l2cap_sock_family_ops = { |
1123 | .family = PF_BLUETOOTH, | |
1124 | .owner = THIS_MODULE, | |
1125 | .create = l2cap_sock_create, | |
1126 | }; | |
1127 | ||
1128 | int __init l2cap_init_sockets(void) | |
1129 | { | |
1130 | int err; | |
1131 | ||
1132 | err = proto_register(&l2cap_proto, 0); | |
1133 | if (err < 0) | |
1134 | return err; | |
1135 | ||
1136 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); | |
1137 | if (err < 0) | |
1138 | goto error; | |
1139 | ||
1140 | BT_INFO("L2CAP socket layer initialized"); | |
1141 | ||
1142 | return 0; | |
1143 | ||
1144 | error: | |
1145 | BT_ERR("L2CAP socket registration failed"); | |
1146 | proto_unregister(&l2cap_proto); | |
1147 | return err; | |
1148 | } | |
1149 | ||
1150 | void l2cap_cleanup_sockets(void) | |
1151 | { | |
1152 | if (bt_sock_unregister(BTPROTO_L2CAP) < 0) | |
1153 | BT_ERR("L2CAP socket unregistration failed"); | |
1154 | ||
1155 | proto_unregister(&l2cap_proto); | |
1156 | } |