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Commit | Line | Data |
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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 | 31 | #include <net/bluetooth/l2cap.h> |
f1cb9af5 | 32 | #include <net/bluetooth/smp.h> |
bb58f747 | 33 | |
cf2f90f5 | 34 | static const struct proto_ops l2cap_sock_ops; |
80808e43 GP |
35 | static void l2cap_sock_init(struct sock *sk, struct sock *parent); |
36 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio); | |
cf2f90f5 | 37 | |
af6bcd82 GP |
38 | static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) |
39 | { | |
40 | struct sock *sk = sock->sk; | |
4343478f | 41 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
42 | struct sockaddr_l2 la; |
43 | int len, err = 0; | |
44 | ||
45 | BT_DBG("sk %p", sk); | |
46 | ||
47 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
48 | return -EINVAL; | |
49 | ||
50 | memset(&la, 0, sizeof(la)); | |
51 | len = min_t(unsigned int, sizeof(la), alen); | |
52 | memcpy(&la, addr, len); | |
53 | ||
b62f328b | 54 | if (la.l2_cid && la.l2_psm) |
af6bcd82 GP |
55 | return -EINVAL; |
56 | ||
57 | lock_sock(sk); | |
58 | ||
59 | if (sk->sk_state != BT_OPEN) { | |
60 | err = -EBADFD; | |
61 | goto done; | |
62 | } | |
63 | ||
64 | if (la.l2_psm) { | |
65 | __u16 psm = __le16_to_cpu(la.l2_psm); | |
66 | ||
67 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
68 | if ((psm & 0x0101) != 0x0001) { | |
69 | err = -EINVAL; | |
70 | goto done; | |
71 | } | |
72 | ||
73 | /* Restrict usage of well-known PSMs */ | |
74 | if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) { | |
75 | err = -EACCES; | |
76 | goto done; | |
77 | } | |
78 | } | |
79 | ||
9e4425ff GP |
80 | if (la.l2_cid) |
81 | err = l2cap_add_scid(chan, la.l2_cid); | |
82 | else | |
83 | err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); | |
af6bcd82 | 84 | |
9e4425ff GP |
85 | if (err < 0) |
86 | goto done; | |
af6bcd82 | 87 | |
9e4425ff GP |
88 | if (__le16_to_cpu(la.l2_psm) == 0x0001 || |
89 | __le16_to_cpu(la.l2_psm) == 0x0003) | |
90 | chan->sec_level = BT_SECURITY_SDP; | |
b62f328b | 91 | |
9e4425ff | 92 | bacpy(&bt_sk(sk)->src, &la.l2_bdaddr); |
89bc500e GP |
93 | |
94 | chan->state = BT_BOUND; | |
9e4425ff | 95 | sk->sk_state = BT_BOUND; |
af6bcd82 GP |
96 | |
97 | done: | |
98 | release_sock(sk); | |
99 | return err; | |
100 | } | |
101 | ||
4e34c50b GP |
102 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) |
103 | { | |
104 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 105 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
4e34c50b GP |
106 | struct sockaddr_l2 la; |
107 | int len, err = 0; | |
108 | ||
109 | BT_DBG("sk %p", sk); | |
110 | ||
111 | if (!addr || alen < sizeof(addr->sa_family) || | |
112 | addr->sa_family != AF_BLUETOOTH) | |
113 | return -EINVAL; | |
114 | ||
115 | memset(&la, 0, sizeof(la)); | |
116 | len = min_t(unsigned int, sizeof(la), alen); | |
117 | memcpy(&la, addr, len); | |
118 | ||
acd7d370 | 119 | if (la.l2_cid && la.l2_psm) |
4e34c50b GP |
120 | return -EINVAL; |
121 | ||
122 | lock_sock(sk); | |
123 | ||
715ec005 | 124 | if (chan->chan_type == L2CAP_CHAN_CONN_ORIENTED |
acd7d370 | 125 | && !(la.l2_psm || la.l2_cid)) { |
4e34c50b GP |
126 | err = -EINVAL; |
127 | goto done; | |
128 | } | |
129 | ||
0c1bc5c6 | 130 | switch (chan->mode) { |
4e34c50b GP |
131 | case L2CAP_MODE_BASIC: |
132 | break; | |
133 | case L2CAP_MODE_ERTM: | |
134 | case L2CAP_MODE_STREAMING: | |
135 | if (!disable_ertm) | |
136 | break; | |
137 | /* fall through */ | |
138 | default: | |
139 | err = -ENOTSUPP; | |
140 | goto done; | |
141 | } | |
142 | ||
143 | switch (sk->sk_state) { | |
144 | case BT_CONNECT: | |
145 | case BT_CONNECT2: | |
146 | case BT_CONFIG: | |
147 | /* Already connecting */ | |
148 | goto wait; | |
149 | ||
150 | case BT_CONNECTED: | |
151 | /* Already connected */ | |
152 | err = -EISCONN; | |
153 | goto done; | |
154 | ||
155 | case BT_OPEN: | |
156 | case BT_BOUND: | |
157 | /* Can connect */ | |
158 | break; | |
159 | ||
160 | default: | |
161 | err = -EBADFD; | |
162 | goto done; | |
163 | } | |
164 | ||
165 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
715ec005 GP |
166 | if ((__le16_to_cpu(la.l2_psm) & 0x0101) != 0x0001 && !la.l2_cid && |
167 | chan->chan_type != L2CAP_CHAN_RAW) { | |
4e34c50b GP |
168 | err = -EINVAL; |
169 | goto done; | |
170 | } | |
171 | ||
172 | /* Set destination address and psm */ | |
173 | bacpy(&bt_sk(sk)->dst, &la.l2_bdaddr); | |
fe4128e0 GP |
174 | chan->psm = la.l2_psm; |
175 | chan->dcid = la.l2_cid; | |
4e34c50b | 176 | |
77a74c7e | 177 | err = l2cap_chan_connect(l2cap_pi(sk)->chan); |
4e34c50b GP |
178 | if (err) |
179 | goto done; | |
180 | ||
181 | wait: | |
182 | err = bt_sock_wait_state(sk, BT_CONNECTED, | |
183 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
184 | done: | |
185 | release_sock(sk); | |
186 | return err; | |
187 | } | |
188 | ||
af6bcd82 GP |
189 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
190 | { | |
191 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 192 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
193 | int err = 0; |
194 | ||
195 | BT_DBG("sk %p backlog %d", sk, backlog); | |
196 | ||
197 | lock_sock(sk); | |
198 | ||
199 | if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) | |
200 | || sk->sk_state != BT_BOUND) { | |
201 | err = -EBADFD; | |
202 | goto done; | |
203 | } | |
204 | ||
0c1bc5c6 | 205 | switch (chan->mode) { |
af6bcd82 GP |
206 | case L2CAP_MODE_BASIC: |
207 | break; | |
208 | case L2CAP_MODE_ERTM: | |
209 | case L2CAP_MODE_STREAMING: | |
210 | if (!disable_ertm) | |
211 | break; | |
212 | /* fall through */ | |
213 | default: | |
214 | err = -ENOTSUPP; | |
215 | goto done; | |
216 | } | |
217 | ||
af6bcd82 GP |
218 | sk->sk_max_ack_backlog = backlog; |
219 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
220 | |
221 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
222 | sk->sk_state = BT_LISTEN; |
223 | ||
224 | done: | |
225 | release_sock(sk); | |
226 | return err; | |
227 | } | |
228 | ||
c47b7c72 GP |
229 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags) |
230 | { | |
231 | DECLARE_WAITQUEUE(wait, current); | |
232 | struct sock *sk = sock->sk, *nsk; | |
233 | long timeo; | |
234 | int err = 0; | |
235 | ||
236 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
237 | ||
c47b7c72 GP |
238 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
239 | ||
240 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
241 | ||
242 | /* Wait for an incoming connection. (wake-one). */ | |
243 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 244 | while (1) { |
c47b7c72 | 245 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
246 | |
247 | if (sk->sk_state != BT_LISTEN) { | |
248 | err = -EBADFD; | |
c47b7c72 GP |
249 | break; |
250 | } | |
251 | ||
f9a3c20a PH |
252 | nsk = bt_accept_dequeue(sk, newsock); |
253 | if (nsk) | |
254 | break; | |
c47b7c72 | 255 | |
f9a3c20a PH |
256 | if (!timeo) { |
257 | err = -EAGAIN; | |
c47b7c72 GP |
258 | break; |
259 | } | |
260 | ||
261 | if (signal_pending(current)) { | |
262 | err = sock_intr_errno(timeo); | |
263 | break; | |
264 | } | |
f9a3c20a PH |
265 | |
266 | release_sock(sk); | |
267 | timeo = schedule_timeout(timeo); | |
268 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 269 | } |
f9a3c20a | 270 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
271 | remove_wait_queue(sk_sleep(sk), &wait); |
272 | ||
273 | if (err) | |
274 | goto done; | |
275 | ||
276 | newsock->state = SS_CONNECTED; | |
277 | ||
278 | BT_DBG("new socket %p", nsk); | |
279 | ||
280 | done: | |
281 | release_sock(sk); | |
282 | return err; | |
283 | } | |
284 | ||
d7175d55 GP |
285 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) |
286 | { | |
287 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
288 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 289 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
290 | |
291 | BT_DBG("sock %p, sk %p", sock, sk); | |
292 | ||
293 | addr->sa_family = AF_BLUETOOTH; | |
294 | *len = sizeof(struct sockaddr_l2); | |
295 | ||
296 | if (peer) { | |
fe4128e0 | 297 | la->l2_psm = chan->psm; |
d7175d55 | 298 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst); |
fe4128e0 | 299 | la->l2_cid = cpu_to_le16(chan->dcid); |
d7175d55 | 300 | } else { |
0c1bc5c6 | 301 | la->l2_psm = chan->sport; |
d7175d55 | 302 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->src); |
fe4128e0 | 303 | la->l2_cid = cpu_to_le16(chan->scid); |
d7175d55 GP |
304 | } |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
99f4808d GP |
309 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
310 | { | |
311 | struct sock *sk = sock->sk; | |
4343478f | 312 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
313 | struct l2cap_options opts; |
314 | struct l2cap_conninfo cinfo; | |
315 | int len, err = 0; | |
316 | u32 opt; | |
317 | ||
318 | BT_DBG("sk %p", sk); | |
319 | ||
320 | if (get_user(len, optlen)) | |
321 | return -EFAULT; | |
322 | ||
323 | lock_sock(sk); | |
324 | ||
325 | switch (optname) { | |
326 | case L2CAP_OPTIONS: | |
e3fb592b | 327 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
328 | opts.imtu = chan->imtu; |
329 | opts.omtu = chan->omtu; | |
330 | opts.flush_to = chan->flush_to; | |
331 | opts.mode = chan->mode; | |
47d1ec61 GP |
332 | opts.fcs = chan->fcs; |
333 | opts.max_tx = chan->max_tx; | |
334 | opts.txwin_size = (__u16)chan->tx_win; | |
99f4808d GP |
335 | |
336 | len = min_t(unsigned int, len, sizeof(opts)); | |
337 | if (copy_to_user(optval, (char *) &opts, len)) | |
338 | err = -EFAULT; | |
339 | ||
340 | break; | |
341 | ||
342 | case L2CAP_LM: | |
4343478f | 343 | switch (chan->sec_level) { |
99f4808d GP |
344 | case BT_SECURITY_LOW: |
345 | opt = L2CAP_LM_AUTH; | |
346 | break; | |
347 | case BT_SECURITY_MEDIUM: | |
348 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
349 | break; | |
350 | case BT_SECURITY_HIGH: | |
351 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
352 | L2CAP_LM_SECURE; | |
353 | break; | |
354 | default: | |
355 | opt = 0; | |
356 | break; | |
357 | } | |
358 | ||
43bd0f32 | 359 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
360 | opt |= L2CAP_LM_MASTER; |
361 | ||
ecf61bdb | 362 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
363 | opt |= L2CAP_LM_RELIABLE; |
364 | ||
365 | if (put_user(opt, (u32 __user *) optval)) | |
366 | err = -EFAULT; | |
367 | break; | |
368 | ||
369 | case L2CAP_CONNINFO: | |
370 | if (sk->sk_state != BT_CONNECTED && | |
371 | !(sk->sk_state == BT_CONNECT2 && | |
372 | bt_sk(sk)->defer_setup)) { | |
373 | err = -ENOTCONN; | |
374 | break; | |
375 | } | |
376 | ||
8d03e971 | 377 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
378 | cinfo.hci_handle = chan->conn->hcon->handle; |
379 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
380 | |
381 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
382 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
383 | err = -EFAULT; | |
384 | ||
385 | break; | |
386 | ||
387 | default: | |
388 | err = -ENOPROTOOPT; | |
389 | break; | |
390 | } | |
391 | ||
392 | release_sock(sk); | |
393 | return err; | |
394 | } | |
395 | ||
396 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
397 | { | |
398 | struct sock *sk = sock->sk; | |
4343478f | 399 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 400 | struct bt_security sec; |
14b12d0b | 401 | struct bt_power pwr; |
99f4808d GP |
402 | int len, err = 0; |
403 | ||
404 | BT_DBG("sk %p", sk); | |
405 | ||
406 | if (level == SOL_L2CAP) | |
407 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
408 | ||
409 | if (level != SOL_BLUETOOTH) | |
410 | return -ENOPROTOOPT; | |
411 | ||
412 | if (get_user(len, optlen)) | |
413 | return -EFAULT; | |
414 | ||
415 | lock_sock(sk); | |
416 | ||
417 | switch (optname) { | |
418 | case BT_SECURITY: | |
715ec005 GP |
419 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
420 | chan->chan_type != L2CAP_CHAN_RAW) { | |
99f4808d GP |
421 | err = -EINVAL; |
422 | break; | |
423 | } | |
424 | ||
8f360119 | 425 | memset(&sec, 0, sizeof(sec)); |
4343478f | 426 | sec.level = chan->sec_level; |
99f4808d | 427 | |
8f360119 VCG |
428 | if (sk->sk_state == BT_CONNECTED) |
429 | sec.key_size = chan->conn->hcon->enc_key_size; | |
430 | ||
99f4808d GP |
431 | len = min_t(unsigned int, len, sizeof(sec)); |
432 | if (copy_to_user(optval, (char *) &sec, len)) | |
433 | err = -EFAULT; | |
434 | ||
435 | break; | |
436 | ||
437 | case BT_DEFER_SETUP: | |
438 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
439 | err = -EINVAL; | |
440 | break; | |
441 | } | |
442 | ||
443 | if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval)) | |
444 | err = -EFAULT; | |
445 | ||
446 | break; | |
447 | ||
448 | case BT_FLUSHABLE: | |
d57b0e8b AE |
449 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
450 | (u32 __user *) optval)) | |
99f4808d GP |
451 | err = -EFAULT; |
452 | ||
453 | break; | |
454 | ||
14b12d0b JG |
455 | case BT_POWER: |
456 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
457 | && sk->sk_type != SOCK_RAW) { | |
458 | err = -EINVAL; | |
459 | break; | |
460 | } | |
461 | ||
15770b1a | 462 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
463 | |
464 | len = min_t(unsigned int, len, sizeof(pwr)); | |
465 | if (copy_to_user(optval, (char *) &pwr, len)) | |
466 | err = -EFAULT; | |
467 | ||
468 | break; | |
469 | ||
99f4808d GP |
470 | default: |
471 | err = -ENOPROTOOPT; | |
472 | break; | |
473 | } | |
474 | ||
475 | release_sock(sk); | |
476 | return err; | |
477 | } | |
478 | ||
33575df7 GP |
479 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
480 | { | |
481 | struct sock *sk = sock->sk; | |
b4450035 | 482 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
483 | struct l2cap_options opts; |
484 | int len, err = 0; | |
485 | u32 opt; | |
486 | ||
487 | BT_DBG("sk %p", sk); | |
488 | ||
489 | lock_sock(sk); | |
490 | ||
491 | switch (optname) { | |
492 | case L2CAP_OPTIONS: | |
493 | if (sk->sk_state == BT_CONNECTED) { | |
494 | err = -EINVAL; | |
495 | break; | |
496 | } | |
497 | ||
0c1bc5c6 GP |
498 | opts.imtu = chan->imtu; |
499 | opts.omtu = chan->omtu; | |
500 | opts.flush_to = chan->flush_to; | |
501 | opts.mode = chan->mode; | |
47d1ec61 GP |
502 | opts.fcs = chan->fcs; |
503 | opts.max_tx = chan->max_tx; | |
504 | opts.txwin_size = (__u16)chan->tx_win; | |
33575df7 GP |
505 | |
506 | len = min_t(unsigned int, sizeof(opts), optlen); | |
507 | if (copy_from_user((char *) &opts, optval, len)) { | |
508 | err = -EFAULT; | |
509 | break; | |
510 | } | |
511 | ||
512 | if (opts.txwin_size > L2CAP_DEFAULT_TX_WINDOW) { | |
513 | err = -EINVAL; | |
514 | break; | |
515 | } | |
516 | ||
0c1bc5c6 GP |
517 | chan->mode = opts.mode; |
518 | switch (chan->mode) { | |
33575df7 | 519 | case L2CAP_MODE_BASIC: |
c1360a1c | 520 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
521 | break; |
522 | case L2CAP_MODE_ERTM: | |
523 | case L2CAP_MODE_STREAMING: | |
524 | if (!disable_ertm) | |
525 | break; | |
526 | /* fall through */ | |
527 | default: | |
528 | err = -EINVAL; | |
529 | break; | |
530 | } | |
531 | ||
0c1bc5c6 GP |
532 | chan->imtu = opts.imtu; |
533 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
534 | chan->fcs = opts.fcs; |
535 | chan->max_tx = opts.max_tx; | |
536 | chan->tx_win = (__u8)opts.txwin_size; | |
33575df7 GP |
537 | break; |
538 | ||
539 | case L2CAP_LM: | |
540 | if (get_user(opt, (u32 __user *) optval)) { | |
541 | err = -EFAULT; | |
542 | break; | |
543 | } | |
544 | ||
545 | if (opt & L2CAP_LM_AUTH) | |
4343478f | 546 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 547 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 548 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 549 | if (opt & L2CAP_LM_SECURE) |
4343478f | 550 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 551 | |
43bd0f32 AE |
552 | if (opt & L2CAP_LM_MASTER) |
553 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
554 | else | |
555 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
556 | |
557 | if (opt & L2CAP_LM_RELIABLE) | |
558 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
559 | else | |
560 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
561 | break; |
562 | ||
563 | default: | |
564 | err = -ENOPROTOOPT; | |
565 | break; | |
566 | } | |
567 | ||
568 | release_sock(sk); | |
569 | return err; | |
570 | } | |
571 | ||
572 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) | |
573 | { | |
574 | struct sock *sk = sock->sk; | |
4343478f | 575 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 576 | struct bt_security sec; |
14b12d0b | 577 | struct bt_power pwr; |
f1cb9af5 | 578 | struct l2cap_conn *conn; |
33575df7 GP |
579 | int len, err = 0; |
580 | u32 opt; | |
581 | ||
582 | BT_DBG("sk %p", sk); | |
583 | ||
584 | if (level == SOL_L2CAP) | |
585 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
586 | ||
587 | if (level != SOL_BLUETOOTH) | |
588 | return -ENOPROTOOPT; | |
589 | ||
590 | lock_sock(sk); | |
591 | ||
592 | switch (optname) { | |
593 | case BT_SECURITY: | |
715ec005 GP |
594 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
595 | chan->chan_type != L2CAP_CHAN_RAW) { | |
33575df7 GP |
596 | err = -EINVAL; |
597 | break; | |
598 | } | |
599 | ||
600 | sec.level = BT_SECURITY_LOW; | |
601 | ||
602 | len = min_t(unsigned int, sizeof(sec), optlen); | |
603 | if (copy_from_user((char *) &sec, optval, len)) { | |
604 | err = -EFAULT; | |
605 | break; | |
606 | } | |
607 | ||
608 | if (sec.level < BT_SECURITY_LOW || | |
609 | sec.level > BT_SECURITY_HIGH) { | |
610 | err = -EINVAL; | |
611 | break; | |
612 | } | |
613 | ||
4343478f | 614 | chan->sec_level = sec.level; |
f1cb9af5 VCG |
615 | |
616 | conn = chan->conn; | |
617 | if (conn && chan->scid == L2CAP_CID_LE_DATA) { | |
618 | if (!conn->hcon->out) { | |
619 | err = -EINVAL; | |
620 | break; | |
621 | } | |
622 | ||
623 | if (smp_conn_security(conn, sec.level)) | |
624 | break; | |
625 | ||
626 | err = 0; | |
627 | sk->sk_state = BT_CONFIG; | |
628 | } | |
33575df7 GP |
629 | break; |
630 | ||
631 | case BT_DEFER_SETUP: | |
632 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
633 | err = -EINVAL; | |
634 | break; | |
635 | } | |
636 | ||
637 | if (get_user(opt, (u32 __user *) optval)) { | |
638 | err = -EFAULT; | |
639 | break; | |
640 | } | |
641 | ||
642 | bt_sk(sk)->defer_setup = opt; | |
643 | break; | |
644 | ||
645 | case BT_FLUSHABLE: | |
646 | if (get_user(opt, (u32 __user *) optval)) { | |
647 | err = -EFAULT; | |
648 | break; | |
649 | } | |
650 | ||
651 | if (opt > BT_FLUSHABLE_ON) { | |
652 | err = -EINVAL; | |
653 | break; | |
654 | } | |
655 | ||
656 | if (opt == BT_FLUSHABLE_OFF) { | |
8c1d787b | 657 | struct l2cap_conn *conn = chan->conn; |
25985edc | 658 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
659 | No Flush support in the LM */ |
660 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
661 | err = -EINVAL; | |
662 | break; | |
663 | } | |
664 | } | |
665 | ||
d57b0e8b AE |
666 | if (opt) |
667 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
668 | else | |
669 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
670 | break; |
671 | ||
14b12d0b JG |
672 | case BT_POWER: |
673 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
674 | chan->chan_type != L2CAP_CHAN_RAW) { | |
675 | err = -EINVAL; | |
676 | break; | |
677 | } | |
678 | ||
679 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
680 | ||
681 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
682 | if (copy_from_user((char *) &pwr, optval, len)) { | |
683 | err = -EFAULT; | |
684 | break; | |
685 | } | |
15770b1a AE |
686 | |
687 | if (pwr.force_active) | |
688 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
689 | else | |
690 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
691 | break; |
692 | ||
33575df7 GP |
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; | |
0c1bc5c6 | 705 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
706 | int err; |
707 | ||
708 | BT_DBG("sock %p, sk %p", sock, sk); | |
709 | ||
710 | err = sock_error(sk); | |
711 | if (err) | |
712 | return err; | |
713 | ||
714 | if (msg->msg_flags & MSG_OOB) | |
715 | return -EOPNOTSUPP; | |
716 | ||
717 | lock_sock(sk); | |
718 | ||
719 | if (sk->sk_state != BT_CONNECTED) { | |
9a91a04a GP |
720 | release_sock(sk); |
721 | return -ENOTCONN; | |
fd83ccdb GP |
722 | } |
723 | ||
9a91a04a | 724 | err = l2cap_chan_send(chan, msg, len); |
fd83ccdb | 725 | |
fd83ccdb GP |
726 | release_sock(sk); |
727 | return err; | |
728 | } | |
33575df7 | 729 | |
68983259 GP |
730 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) |
731 | { | |
732 | struct sock *sk = sock->sk; | |
e328140f MM |
733 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
734 | int err; | |
68983259 GP |
735 | |
736 | lock_sock(sk); | |
737 | ||
738 | if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) { | |
8c1d787b GP |
739 | sk->sk_state = BT_CONFIG; |
740 | ||
e328140f | 741 | __l2cap_connect_rsp_defer(pi->chan); |
68983259 GP |
742 | release_sock(sk); |
743 | return 0; | |
744 | } | |
745 | ||
746 | release_sock(sk); | |
747 | ||
748 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
749 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
750 | else | |
751 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
752 | ||
753 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
754 | return err; | |
755 | ||
756 | /* Attempt to put pending rx data in the socket buffer */ | |
757 | ||
758 | lock_sock(sk); | |
759 | ||
760 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
761 | goto done; | |
762 | ||
763 | if (pi->rx_busy_skb) { | |
764 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
765 | pi->rx_busy_skb = NULL; | |
766 | else | |
767 | goto done; | |
768 | } | |
769 | ||
770 | /* Restore data flow when half of the receive buffer is | |
771 | * available. This avoids resending large numbers of | |
772 | * frames. | |
773 | */ | |
774 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
775 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 776 | |
e328140f MM |
777 | done: |
778 | release_sock(sk); | |
779 | return err; | |
68983259 GP |
780 | } |
781 | ||
05fc1576 GP |
782 | /* Kill socket (only if zapped and orphan) |
783 | * Must be called on unlocked socket. | |
784 | */ | |
ba3bd0ee | 785 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
786 | { |
787 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
788 | return; | |
789 | ||
790 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
791 | ||
792 | /* Kill poor orphan */ | |
6ff5abbf | 793 | |
23691d75 | 794 | l2cap_chan_destroy(l2cap_pi(sk)->chan); |
05fc1576 GP |
795 | sock_set_flag(sk, SOCK_DEAD); |
796 | sock_put(sk); | |
797 | } | |
798 | ||
dcba0dba GP |
799 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
800 | { | |
801 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 802 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
dcba0dba GP |
803 | int err = 0; |
804 | ||
805 | BT_DBG("sock %p, sk %p", sock, sk); | |
806 | ||
807 | if (!sk) | |
808 | return 0; | |
809 | ||
810 | lock_sock(sk); | |
811 | if (!sk->sk_shutdown) { | |
0c1bc5c6 | 812 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
813 | err = __l2cap_wait_ack(sk); |
814 | ||
815 | sk->sk_shutdown = SHUTDOWN_MASK; | |
0f852724 | 816 | l2cap_chan_close(chan, 0); |
dcba0dba GP |
817 | |
818 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
819 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
820 | sk->sk_lingertime); | |
821 | } | |
822 | ||
823 | if (!err && sk->sk_err) | |
824 | err = -sk->sk_err; | |
825 | ||
826 | release_sock(sk); | |
827 | return err; | |
828 | } | |
829 | ||
554f05bb GP |
830 | static int l2cap_sock_release(struct socket *sock) |
831 | { | |
832 | struct sock *sk = sock->sk; | |
833 | int err; | |
834 | ||
835 | BT_DBG("sock %p, sk %p", sock, sk); | |
836 | ||
837 | if (!sk) | |
838 | return 0; | |
839 | ||
840 | err = l2cap_sock_shutdown(sock, 2); | |
841 | ||
842 | sock_orphan(sk); | |
843 | l2cap_sock_kill(sk); | |
844 | return err; | |
845 | } | |
846 | ||
80808e43 GP |
847 | static struct l2cap_chan *l2cap_sock_new_connection_cb(void *data) |
848 | { | |
849 | struct sock *sk, *parent = data; | |
850 | ||
851 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, | |
852 | GFP_ATOMIC); | |
853 | if (!sk) | |
854 | return NULL; | |
855 | ||
856 | l2cap_sock_init(sk, parent); | |
857 | ||
858 | return l2cap_pi(sk)->chan; | |
859 | } | |
860 | ||
23070494 GP |
861 | static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb) |
862 | { | |
e328140f | 863 | int err; |
23070494 | 864 | struct sock *sk = data; |
e328140f MM |
865 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
866 | ||
867 | if (pi->rx_busy_skb) | |
868 | return -ENOMEM; | |
869 | ||
870 | err = sock_queue_rcv_skb(sk, skb); | |
871 | ||
872 | /* For ERTM, handle one skb that doesn't fit into the recv | |
873 | * buffer. This is important to do because the data frames | |
874 | * have already been acked, so the skb cannot be discarded. | |
875 | * | |
876 | * Notify the l2cap core that the buffer is full, so the | |
877 | * LOCAL_BUSY state is entered and no more frames are | |
878 | * acked and reassembled until there is buffer space | |
879 | * available. | |
880 | */ | |
881 | if (err < 0 && pi->chan->mode == L2CAP_MODE_ERTM) { | |
882 | pi->rx_busy_skb = skb; | |
883 | l2cap_chan_busy(pi->chan, 1); | |
884 | err = 0; | |
885 | } | |
23070494 | 886 | |
e328140f | 887 | return err; |
23070494 GP |
888 | } |
889 | ||
ba3bd0ee GP |
890 | static void l2cap_sock_close_cb(void *data) |
891 | { | |
892 | struct sock *sk = data; | |
893 | ||
894 | l2cap_sock_kill(sk); | |
895 | } | |
896 | ||
89bc500e GP |
897 | static void l2cap_sock_state_change_cb(void *data, int state) |
898 | { | |
899 | struct sock *sk = data; | |
900 | ||
901 | sk->sk_state = state; | |
902 | } | |
903 | ||
80808e43 GP |
904 | static struct l2cap_ops l2cap_chan_ops = { |
905 | .name = "L2CAP Socket Interface", | |
906 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 907 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 908 | .close = l2cap_sock_close_cb, |
89bc500e | 909 | .state_change = l2cap_sock_state_change_cb, |
80808e43 GP |
910 | }; |
911 | ||
bb58f747 GP |
912 | static void l2cap_sock_destruct(struct sock *sk) |
913 | { | |
914 | BT_DBG("sk %p", sk); | |
915 | ||
e328140f MM |
916 | if (l2cap_pi(sk)->rx_busy_skb) { |
917 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
918 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
919 | } | |
920 | ||
bb58f747 GP |
921 | skb_queue_purge(&sk->sk_receive_queue); |
922 | skb_queue_purge(&sk->sk_write_queue); | |
923 | } | |
924 | ||
80808e43 | 925 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 GP |
926 | { |
927 | struct l2cap_pinfo *pi = l2cap_pi(sk); | |
b4450035 | 928 | struct l2cap_chan *chan = pi->chan; |
bb58f747 GP |
929 | |
930 | BT_DBG("sk %p", sk); | |
931 | ||
932 | if (parent) { | |
b4450035 GP |
933 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
934 | ||
bb58f747 GP |
935 | sk->sk_type = parent->sk_type; |
936 | bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup; | |
937 | ||
715ec005 | 938 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
939 | chan->imtu = pchan->imtu; |
940 | chan->omtu = pchan->omtu; | |
b4450035 | 941 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 942 | chan->mode = pchan->mode; |
47d1ec61 GP |
943 | chan->fcs = pchan->fcs; |
944 | chan->max_tx = pchan->max_tx; | |
945 | chan->tx_win = pchan->tx_win; | |
4343478f | 946 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 947 | chan->flags = pchan->flags; |
bb58f747 | 948 | } else { |
715ec005 GP |
949 | |
950 | switch (sk->sk_type) { | |
951 | case SOCK_RAW: | |
952 | chan->chan_type = L2CAP_CHAN_RAW; | |
953 | break; | |
954 | case SOCK_DGRAM: | |
955 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
956 | break; | |
957 | case SOCK_SEQPACKET: | |
958 | case SOCK_STREAM: | |
959 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
960 | break; | |
961 | } | |
962 | ||
0c1bc5c6 GP |
963 | chan->imtu = L2CAP_DEFAULT_MTU; |
964 | chan->omtu = 0; | |
bb58f747 | 965 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 966 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 967 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 968 | } else { |
0c1bc5c6 | 969 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 970 | } |
47d1ec61 GP |
971 | chan->max_tx = L2CAP_DEFAULT_MAX_TX; |
972 | chan->fcs = L2CAP_FCS_CRC16; | |
973 | chan->tx_win = L2CAP_DEFAULT_TX_WINDOW; | |
4343478f | 974 | chan->sec_level = BT_SECURITY_LOW; |
d57b0e8b | 975 | chan->flags = 0; |
15770b1a | 976 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
bb58f747 GP |
977 | } |
978 | ||
979 | /* Default config options */ | |
0c1bc5c6 | 980 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
981 | |
982 | chan->data = sk; | |
983 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
984 | } |
985 | ||
986 | static struct proto l2cap_proto = { | |
987 | .name = "L2CAP", | |
988 | .owner = THIS_MODULE, | |
989 | .obj_size = sizeof(struct l2cap_pinfo) | |
990 | }; | |
991 | ||
80808e43 | 992 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
bb58f747 GP |
993 | { |
994 | struct sock *sk; | |
dc50a06d | 995 | struct l2cap_chan *chan; |
bb58f747 GP |
996 | |
997 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
998 | if (!sk) | |
999 | return NULL; | |
1000 | ||
1001 | sock_init_data(sock, sk); | |
1002 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1003 | ||
1004 | sk->sk_destruct = l2cap_sock_destruct; | |
6be6b11f | 1005 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
bb58f747 GP |
1006 | |
1007 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1008 | ||
1009 | sk->sk_protocol = proto; | |
1010 | sk->sk_state = BT_OPEN; | |
1011 | ||
dc50a06d GP |
1012 | chan = l2cap_chan_create(sk); |
1013 | if (!chan) { | |
1014 | l2cap_sock_kill(sk); | |
1015 | return NULL; | |
1016 | } | |
1017 | ||
1018 | l2cap_pi(sk)->chan = chan; | |
1019 | ||
bb58f747 GP |
1020 | return sk; |
1021 | } | |
1022 | ||
1023 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1024 | int kern) | |
1025 | { | |
1026 | struct sock *sk; | |
1027 | ||
1028 | BT_DBG("sock %p", sock); | |
1029 | ||
1030 | sock->state = SS_UNCONNECTED; | |
1031 | ||
1032 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
1033 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) | |
1034 | return -ESOCKTNOSUPPORT; | |
1035 | ||
1036 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1037 | return -EPERM; | |
1038 | ||
1039 | sock->ops = &l2cap_sock_ops; | |
1040 | ||
1041 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1042 | if (!sk) | |
1043 | return -ENOMEM; | |
1044 | ||
1045 | l2cap_sock_init(sk, NULL); | |
1046 | return 0; | |
1047 | } | |
1048 | ||
cf2f90f5 | 1049 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1050 | .family = PF_BLUETOOTH, |
1051 | .owner = THIS_MODULE, | |
1052 | .release = l2cap_sock_release, | |
1053 | .bind = l2cap_sock_bind, | |
1054 | .connect = l2cap_sock_connect, | |
1055 | .listen = l2cap_sock_listen, | |
1056 | .accept = l2cap_sock_accept, | |
1057 | .getname = l2cap_sock_getname, | |
1058 | .sendmsg = l2cap_sock_sendmsg, | |
1059 | .recvmsg = l2cap_sock_recvmsg, | |
1060 | .poll = bt_sock_poll, | |
1061 | .ioctl = bt_sock_ioctl, | |
1062 | .mmap = sock_no_mmap, | |
1063 | .socketpair = sock_no_socketpair, | |
1064 | .shutdown = l2cap_sock_shutdown, | |
1065 | .setsockopt = l2cap_sock_setsockopt, | |
1066 | .getsockopt = l2cap_sock_getsockopt | |
1067 | }; | |
1068 | ||
bb58f747 GP |
1069 | static const struct net_proto_family l2cap_sock_family_ops = { |
1070 | .family = PF_BLUETOOTH, | |
1071 | .owner = THIS_MODULE, | |
1072 | .create = l2cap_sock_create, | |
1073 | }; | |
1074 | ||
1075 | int __init l2cap_init_sockets(void) | |
1076 | { | |
e2174ca4 | 1077 | int err; |
bb58f747 | 1078 | |
e2174ca4 GP |
1079 | err = proto_register(&l2cap_proto, 0); |
1080 | if (err < 0) | |
1081 | return err; | |
bb58f747 | 1082 | |
e2174ca4 GP |
1083 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
1084 | if (err < 0) | |
1085 | goto error; | |
bb58f747 | 1086 | |
e2174ca4 | 1087 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1088 | |
e2174ca4 | 1089 | return 0; |
bb58f747 GP |
1090 | |
1091 | error: | |
e2174ca4 GP |
1092 | BT_ERR("L2CAP socket registration failed"); |
1093 | proto_unregister(&l2cap_proto); | |
1094 | return err; | |
bb58f747 GP |
1095 | } |
1096 | ||
1097 | void l2cap_cleanup_sockets(void) | |
1098 | { | |
e2174ca4 GP |
1099 | if (bt_sock_unregister(BTPROTO_L2CAP) < 0) |
1100 | BT_ERR("L2CAP socket unregistration failed"); | |
bb58f747 | 1101 | |
e2174ca4 | 1102 | proto_unregister(&l2cap_proto); |
bb58f747 | 1103 | } |