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 | ||
6230c9b4 | 29 | #include <linux/security.h> |
bc3b2d7f | 30 | #include <linux/export.h> |
6230c9b4 | 31 | |
bb58f747 | 32 | #include <net/bluetooth/bluetooth.h> |
33575df7 | 33 | #include <net/bluetooth/hci_core.h> |
bb58f747 | 34 | #include <net/bluetooth/l2cap.h> |
f1cb9af5 | 35 | #include <net/bluetooth/smp.h> |
bb58f747 | 36 | |
cf2f90f5 | 37 | static const struct proto_ops l2cap_sock_ops; |
80808e43 GP |
38 | static void l2cap_sock_init(struct sock *sk, struct sock *parent); |
39 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio); | |
cf2f90f5 | 40 | |
af6bcd82 GP |
41 | static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) |
42 | { | |
43 | struct sock *sk = sock->sk; | |
4343478f | 44 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
45 | struct sockaddr_l2 la; |
46 | int len, err = 0; | |
47 | ||
48 | BT_DBG("sk %p", sk); | |
49 | ||
50 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
51 | return -EINVAL; | |
52 | ||
53 | memset(&la, 0, sizeof(la)); | |
54 | len = min_t(unsigned int, sizeof(la), alen); | |
55 | memcpy(&la, addr, len); | |
56 | ||
b62f328b | 57 | if (la.l2_cid && la.l2_psm) |
af6bcd82 GP |
58 | return -EINVAL; |
59 | ||
60 | lock_sock(sk); | |
61 | ||
62 | if (sk->sk_state != BT_OPEN) { | |
63 | err = -EBADFD; | |
64 | goto done; | |
65 | } | |
66 | ||
67 | if (la.l2_psm) { | |
68 | __u16 psm = __le16_to_cpu(la.l2_psm); | |
69 | ||
70 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
71 | if ((psm & 0x0101) != 0x0001) { | |
72 | err = -EINVAL; | |
73 | goto done; | |
74 | } | |
75 | ||
76 | /* Restrict usage of well-known PSMs */ | |
77 | if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) { | |
78 | err = -EACCES; | |
79 | goto done; | |
80 | } | |
81 | } | |
82 | ||
9e4425ff GP |
83 | if (la.l2_cid) |
84 | err = l2cap_add_scid(chan, la.l2_cid); | |
85 | else | |
86 | err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); | |
af6bcd82 | 87 | |
9e4425ff GP |
88 | if (err < 0) |
89 | goto done; | |
af6bcd82 | 90 | |
9e4425ff GP |
91 | if (__le16_to_cpu(la.l2_psm) == 0x0001 || |
92 | __le16_to_cpu(la.l2_psm) == 0x0003) | |
93 | chan->sec_level = BT_SECURITY_SDP; | |
b62f328b | 94 | |
9e4425ff | 95 | bacpy(&bt_sk(sk)->src, &la.l2_bdaddr); |
89bc500e GP |
96 | |
97 | chan->state = BT_BOUND; | |
9e4425ff | 98 | sk->sk_state = BT_BOUND; |
af6bcd82 GP |
99 | |
100 | done: | |
101 | release_sock(sk); | |
102 | return err; | |
103 | } | |
104 | ||
4e34c50b GP |
105 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) |
106 | { | |
107 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 108 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
4e34c50b GP |
109 | struct sockaddr_l2 la; |
110 | int len, err = 0; | |
111 | ||
112 | BT_DBG("sk %p", sk); | |
113 | ||
114 | if (!addr || alen < sizeof(addr->sa_family) || | |
115 | addr->sa_family != AF_BLUETOOTH) | |
116 | return -EINVAL; | |
117 | ||
118 | memset(&la, 0, sizeof(la)); | |
119 | len = min_t(unsigned int, sizeof(la), alen); | |
120 | memcpy(&la, addr, len); | |
121 | ||
acd7d370 | 122 | if (la.l2_cid && la.l2_psm) |
4e34c50b GP |
123 | return -EINVAL; |
124 | ||
125 | lock_sock(sk); | |
126 | ||
715ec005 | 127 | if (chan->chan_type == L2CAP_CHAN_CONN_ORIENTED |
acd7d370 | 128 | && !(la.l2_psm || la.l2_cid)) { |
4e34c50b GP |
129 | err = -EINVAL; |
130 | goto done; | |
131 | } | |
132 | ||
0c1bc5c6 | 133 | switch (chan->mode) { |
4e34c50b GP |
134 | case L2CAP_MODE_BASIC: |
135 | break; | |
136 | case L2CAP_MODE_ERTM: | |
137 | case L2CAP_MODE_STREAMING: | |
138 | if (!disable_ertm) | |
139 | break; | |
140 | /* fall through */ | |
141 | default: | |
142 | err = -ENOTSUPP; | |
143 | goto done; | |
144 | } | |
145 | ||
146 | switch (sk->sk_state) { | |
147 | case BT_CONNECT: | |
148 | case BT_CONNECT2: | |
149 | case BT_CONFIG: | |
150 | /* Already connecting */ | |
151 | goto wait; | |
152 | ||
153 | case BT_CONNECTED: | |
154 | /* Already connected */ | |
155 | err = -EISCONN; | |
156 | goto done; | |
157 | ||
158 | case BT_OPEN: | |
159 | case BT_BOUND: | |
160 | /* Can connect */ | |
161 | break; | |
162 | ||
163 | default: | |
164 | err = -EBADFD; | |
165 | goto done; | |
166 | } | |
167 | ||
168 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
715ec005 GP |
169 | if ((__le16_to_cpu(la.l2_psm) & 0x0101) != 0x0001 && !la.l2_cid && |
170 | chan->chan_type != L2CAP_CHAN_RAW) { | |
4e34c50b GP |
171 | err = -EINVAL; |
172 | goto done; | |
173 | } | |
174 | ||
175 | /* Set destination address and psm */ | |
176 | bacpy(&bt_sk(sk)->dst, &la.l2_bdaddr); | |
fe4128e0 GP |
177 | chan->psm = la.l2_psm; |
178 | chan->dcid = la.l2_cid; | |
4e34c50b | 179 | |
77a74c7e | 180 | err = l2cap_chan_connect(l2cap_pi(sk)->chan); |
4e34c50b GP |
181 | if (err) |
182 | goto done; | |
183 | ||
184 | wait: | |
185 | err = bt_sock_wait_state(sk, BT_CONNECTED, | |
186 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
187 | done: | |
188 | release_sock(sk); | |
189 | return err; | |
190 | } | |
191 | ||
af6bcd82 GP |
192 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
193 | { | |
194 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 195 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
196 | int err = 0; |
197 | ||
198 | BT_DBG("sk %p backlog %d", sk, backlog); | |
199 | ||
200 | lock_sock(sk); | |
201 | ||
202 | if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) | |
203 | || sk->sk_state != BT_BOUND) { | |
204 | err = -EBADFD; | |
205 | goto done; | |
206 | } | |
207 | ||
0c1bc5c6 | 208 | switch (chan->mode) { |
af6bcd82 GP |
209 | case L2CAP_MODE_BASIC: |
210 | break; | |
211 | case L2CAP_MODE_ERTM: | |
212 | case L2CAP_MODE_STREAMING: | |
213 | if (!disable_ertm) | |
214 | break; | |
215 | /* fall through */ | |
216 | default: | |
217 | err = -ENOTSUPP; | |
218 | goto done; | |
219 | } | |
220 | ||
af6bcd82 GP |
221 | sk->sk_max_ack_backlog = backlog; |
222 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
223 | |
224 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
225 | sk->sk_state = BT_LISTEN; |
226 | ||
227 | done: | |
228 | release_sock(sk); | |
229 | return err; | |
230 | } | |
231 | ||
c47b7c72 GP |
232 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags) |
233 | { | |
234 | DECLARE_WAITQUEUE(wait, current); | |
235 | struct sock *sk = sock->sk, *nsk; | |
236 | long timeo; | |
237 | int err = 0; | |
238 | ||
239 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
240 | ||
c47b7c72 GP |
241 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
242 | ||
243 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
244 | ||
245 | /* Wait for an incoming connection. (wake-one). */ | |
246 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 247 | while (1) { |
c47b7c72 | 248 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
249 | |
250 | if (sk->sk_state != BT_LISTEN) { | |
251 | err = -EBADFD; | |
c47b7c72 GP |
252 | break; |
253 | } | |
254 | ||
f9a3c20a PH |
255 | nsk = bt_accept_dequeue(sk, newsock); |
256 | if (nsk) | |
257 | break; | |
c47b7c72 | 258 | |
f9a3c20a PH |
259 | if (!timeo) { |
260 | err = -EAGAIN; | |
c47b7c72 GP |
261 | break; |
262 | } | |
263 | ||
264 | if (signal_pending(current)) { | |
265 | err = sock_intr_errno(timeo); | |
266 | break; | |
267 | } | |
f9a3c20a PH |
268 | |
269 | release_sock(sk); | |
270 | timeo = schedule_timeout(timeo); | |
271 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 272 | } |
f9a3c20a | 273 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
274 | remove_wait_queue(sk_sleep(sk), &wait); |
275 | ||
276 | if (err) | |
277 | goto done; | |
278 | ||
279 | newsock->state = SS_CONNECTED; | |
280 | ||
281 | BT_DBG("new socket %p", nsk); | |
282 | ||
283 | done: | |
284 | release_sock(sk); | |
285 | return err; | |
286 | } | |
287 | ||
d7175d55 GP |
288 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) |
289 | { | |
290 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
291 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 292 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
293 | |
294 | BT_DBG("sock %p, sk %p", sock, sk); | |
295 | ||
296 | addr->sa_family = AF_BLUETOOTH; | |
297 | *len = sizeof(struct sockaddr_l2); | |
298 | ||
299 | if (peer) { | |
fe4128e0 | 300 | la->l2_psm = chan->psm; |
d7175d55 | 301 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst); |
fe4128e0 | 302 | la->l2_cid = cpu_to_le16(chan->dcid); |
d7175d55 | 303 | } else { |
0c1bc5c6 | 304 | la->l2_psm = chan->sport; |
d7175d55 | 305 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->src); |
fe4128e0 | 306 | la->l2_cid = cpu_to_le16(chan->scid); |
d7175d55 GP |
307 | } |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
99f4808d GP |
312 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
313 | { | |
314 | struct sock *sk = sock->sk; | |
4343478f | 315 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
316 | struct l2cap_options opts; |
317 | struct l2cap_conninfo cinfo; | |
318 | int len, err = 0; | |
319 | u32 opt; | |
320 | ||
321 | BT_DBG("sk %p", sk); | |
322 | ||
323 | if (get_user(len, optlen)) | |
324 | return -EFAULT; | |
325 | ||
326 | lock_sock(sk); | |
327 | ||
328 | switch (optname) { | |
329 | case L2CAP_OPTIONS: | |
e3fb592b | 330 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
331 | opts.imtu = chan->imtu; |
332 | opts.omtu = chan->omtu; | |
333 | opts.flush_to = chan->flush_to; | |
334 | opts.mode = chan->mode; | |
47d1ec61 GP |
335 | opts.fcs = chan->fcs; |
336 | opts.max_tx = chan->max_tx; | |
337 | opts.txwin_size = (__u16)chan->tx_win; | |
99f4808d GP |
338 | |
339 | len = min_t(unsigned int, len, sizeof(opts)); | |
340 | if (copy_to_user(optval, (char *) &opts, len)) | |
341 | err = -EFAULT; | |
342 | ||
343 | break; | |
344 | ||
345 | case L2CAP_LM: | |
4343478f | 346 | switch (chan->sec_level) { |
99f4808d GP |
347 | case BT_SECURITY_LOW: |
348 | opt = L2CAP_LM_AUTH; | |
349 | break; | |
350 | case BT_SECURITY_MEDIUM: | |
351 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
352 | break; | |
353 | case BT_SECURITY_HIGH: | |
354 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
355 | L2CAP_LM_SECURE; | |
356 | break; | |
357 | default: | |
358 | opt = 0; | |
359 | break; | |
360 | } | |
361 | ||
4343478f | 362 | if (chan->role_switch) |
99f4808d GP |
363 | opt |= L2CAP_LM_MASTER; |
364 | ||
4343478f | 365 | if (chan->force_reliable) |
99f4808d GP |
366 | opt |= L2CAP_LM_RELIABLE; |
367 | ||
368 | if (put_user(opt, (u32 __user *) optval)) | |
369 | err = -EFAULT; | |
370 | break; | |
371 | ||
372 | case L2CAP_CONNINFO: | |
373 | if (sk->sk_state != BT_CONNECTED && | |
374 | !(sk->sk_state == BT_CONNECT2 && | |
375 | bt_sk(sk)->defer_setup)) { | |
376 | err = -ENOTCONN; | |
377 | break; | |
378 | } | |
379 | ||
8d03e971 | 380 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
381 | cinfo.hci_handle = chan->conn->hcon->handle; |
382 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
383 | |
384 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
385 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
386 | err = -EFAULT; | |
387 | ||
388 | break; | |
389 | ||
390 | default: | |
391 | err = -ENOPROTOOPT; | |
392 | break; | |
393 | } | |
394 | ||
395 | release_sock(sk); | |
396 | return err; | |
397 | } | |
398 | ||
399 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
400 | { | |
401 | struct sock *sk = sock->sk; | |
4343478f | 402 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 403 | struct bt_security sec; |
14b12d0b | 404 | struct bt_power pwr; |
99f4808d GP |
405 | int len, err = 0; |
406 | ||
407 | BT_DBG("sk %p", sk); | |
408 | ||
409 | if (level == SOL_L2CAP) | |
410 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
411 | ||
412 | if (level != SOL_BLUETOOTH) | |
413 | return -ENOPROTOOPT; | |
414 | ||
415 | if (get_user(len, optlen)) | |
416 | return -EFAULT; | |
417 | ||
418 | lock_sock(sk); | |
419 | ||
420 | switch (optname) { | |
421 | case BT_SECURITY: | |
715ec005 GP |
422 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
423 | chan->chan_type != L2CAP_CHAN_RAW) { | |
99f4808d GP |
424 | err = -EINVAL; |
425 | break; | |
426 | } | |
427 | ||
8f360119 | 428 | memset(&sec, 0, sizeof(sec)); |
4343478f | 429 | sec.level = chan->sec_level; |
99f4808d | 430 | |
8f360119 VCG |
431 | if (sk->sk_state == BT_CONNECTED) |
432 | sec.key_size = chan->conn->hcon->enc_key_size; | |
433 | ||
99f4808d GP |
434 | len = min_t(unsigned int, len, sizeof(sec)); |
435 | if (copy_to_user(optval, (char *) &sec, len)) | |
436 | err = -EFAULT; | |
437 | ||
438 | break; | |
439 | ||
440 | case BT_DEFER_SETUP: | |
441 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
442 | err = -EINVAL; | |
443 | break; | |
444 | } | |
445 | ||
446 | if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval)) | |
447 | err = -EFAULT; | |
448 | ||
449 | break; | |
450 | ||
451 | case BT_FLUSHABLE: | |
4343478f | 452 | if (put_user(chan->flushable, (u32 __user *) optval)) |
99f4808d GP |
453 | err = -EFAULT; |
454 | ||
455 | break; | |
456 | ||
14b12d0b JG |
457 | case BT_POWER: |
458 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
459 | && sk->sk_type != SOCK_RAW) { | |
460 | err = -EINVAL; | |
461 | break; | |
462 | } | |
463 | ||
464 | pwr.force_active = chan->force_active; | |
465 | ||
466 | len = min_t(unsigned int, len, sizeof(pwr)); | |
467 | if (copy_to_user(optval, (char *) &pwr, len)) | |
468 | err = -EFAULT; | |
469 | ||
470 | break; | |
471 | ||
99f4808d GP |
472 | default: |
473 | err = -ENOPROTOOPT; | |
474 | break; | |
475 | } | |
476 | ||
477 | release_sock(sk); | |
478 | return err; | |
479 | } | |
480 | ||
33575df7 GP |
481 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
482 | { | |
483 | struct sock *sk = sock->sk; | |
b4450035 | 484 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
485 | struct l2cap_options opts; |
486 | int len, err = 0; | |
487 | u32 opt; | |
488 | ||
489 | BT_DBG("sk %p", sk); | |
490 | ||
491 | lock_sock(sk); | |
492 | ||
493 | switch (optname) { | |
494 | case L2CAP_OPTIONS: | |
495 | if (sk->sk_state == BT_CONNECTED) { | |
496 | err = -EINVAL; | |
497 | break; | |
498 | } | |
499 | ||
0c1bc5c6 GP |
500 | opts.imtu = chan->imtu; |
501 | opts.omtu = chan->omtu; | |
502 | opts.flush_to = chan->flush_to; | |
503 | opts.mode = chan->mode; | |
47d1ec61 GP |
504 | opts.fcs = chan->fcs; |
505 | opts.max_tx = chan->max_tx; | |
506 | opts.txwin_size = (__u16)chan->tx_win; | |
33575df7 GP |
507 | |
508 | len = min_t(unsigned int, sizeof(opts), optlen); | |
509 | if (copy_from_user((char *) &opts, optval, len)) { | |
510 | err = -EFAULT; | |
511 | break; | |
512 | } | |
513 | ||
514 | if (opts.txwin_size > L2CAP_DEFAULT_TX_WINDOW) { | |
515 | err = -EINVAL; | |
516 | break; | |
517 | } | |
518 | ||
0c1bc5c6 GP |
519 | chan->mode = opts.mode; |
520 | switch (chan->mode) { | |
33575df7 | 521 | case L2CAP_MODE_BASIC: |
c1360a1c | 522 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
523 | break; |
524 | case L2CAP_MODE_ERTM: | |
525 | case L2CAP_MODE_STREAMING: | |
526 | if (!disable_ertm) | |
527 | break; | |
528 | /* fall through */ | |
529 | default: | |
530 | err = -EINVAL; | |
531 | break; | |
532 | } | |
533 | ||
0c1bc5c6 GP |
534 | chan->imtu = opts.imtu; |
535 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
536 | chan->fcs = opts.fcs; |
537 | chan->max_tx = opts.max_tx; | |
538 | chan->tx_win = (__u8)opts.txwin_size; | |
33575df7 GP |
539 | break; |
540 | ||
541 | case L2CAP_LM: | |
542 | if (get_user(opt, (u32 __user *) optval)) { | |
543 | err = -EFAULT; | |
544 | break; | |
545 | } | |
546 | ||
547 | if (opt & L2CAP_LM_AUTH) | |
4343478f | 548 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 549 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 550 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 551 | if (opt & L2CAP_LM_SECURE) |
4343478f | 552 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 553 | |
4343478f GP |
554 | chan->role_switch = (opt & L2CAP_LM_MASTER); |
555 | chan->force_reliable = (opt & L2CAP_LM_RELIABLE); | |
33575df7 GP |
556 | break; |
557 | ||
558 | default: | |
559 | err = -ENOPROTOOPT; | |
560 | break; | |
561 | } | |
562 | ||
563 | release_sock(sk); | |
564 | return err; | |
565 | } | |
566 | ||
567 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) | |
568 | { | |
569 | struct sock *sk = sock->sk; | |
4343478f | 570 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 571 | struct bt_security sec; |
14b12d0b | 572 | struct bt_power pwr; |
f1cb9af5 | 573 | struct l2cap_conn *conn; |
33575df7 GP |
574 | int len, err = 0; |
575 | u32 opt; | |
576 | ||
577 | BT_DBG("sk %p", sk); | |
578 | ||
579 | if (level == SOL_L2CAP) | |
580 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
581 | ||
582 | if (level != SOL_BLUETOOTH) | |
583 | return -ENOPROTOOPT; | |
584 | ||
585 | lock_sock(sk); | |
586 | ||
587 | switch (optname) { | |
588 | case BT_SECURITY: | |
715ec005 GP |
589 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
590 | chan->chan_type != L2CAP_CHAN_RAW) { | |
33575df7 GP |
591 | err = -EINVAL; |
592 | break; | |
593 | } | |
594 | ||
595 | sec.level = BT_SECURITY_LOW; | |
596 | ||
597 | len = min_t(unsigned int, sizeof(sec), optlen); | |
598 | if (copy_from_user((char *) &sec, optval, len)) { | |
599 | err = -EFAULT; | |
600 | break; | |
601 | } | |
602 | ||
603 | if (sec.level < BT_SECURITY_LOW || | |
604 | sec.level > BT_SECURITY_HIGH) { | |
605 | err = -EINVAL; | |
606 | break; | |
607 | } | |
608 | ||
4343478f | 609 | chan->sec_level = sec.level; |
f1cb9af5 VCG |
610 | |
611 | conn = chan->conn; | |
612 | if (conn && chan->scid == L2CAP_CID_LE_DATA) { | |
613 | if (!conn->hcon->out) { | |
614 | err = -EINVAL; | |
615 | break; | |
616 | } | |
617 | ||
618 | if (smp_conn_security(conn, sec.level)) | |
619 | break; | |
620 | ||
621 | err = 0; | |
622 | sk->sk_state = BT_CONFIG; | |
623 | } | |
33575df7 GP |
624 | break; |
625 | ||
626 | case BT_DEFER_SETUP: | |
627 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
628 | err = -EINVAL; | |
629 | break; | |
630 | } | |
631 | ||
632 | if (get_user(opt, (u32 __user *) optval)) { | |
633 | err = -EFAULT; | |
634 | break; | |
635 | } | |
636 | ||
637 | bt_sk(sk)->defer_setup = opt; | |
638 | break; | |
639 | ||
640 | case BT_FLUSHABLE: | |
641 | if (get_user(opt, (u32 __user *) optval)) { | |
642 | err = -EFAULT; | |
643 | break; | |
644 | } | |
645 | ||
646 | if (opt > BT_FLUSHABLE_ON) { | |
647 | err = -EINVAL; | |
648 | break; | |
649 | } | |
650 | ||
651 | if (opt == BT_FLUSHABLE_OFF) { | |
8c1d787b | 652 | struct l2cap_conn *conn = chan->conn; |
25985edc | 653 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
654 | No Flush support in the LM */ |
655 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
656 | err = -EINVAL; | |
657 | break; | |
658 | } | |
659 | } | |
660 | ||
4343478f | 661 | chan->flushable = opt; |
33575df7 GP |
662 | break; |
663 | ||
14b12d0b JG |
664 | case BT_POWER: |
665 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
666 | chan->chan_type != L2CAP_CHAN_RAW) { | |
667 | err = -EINVAL; | |
668 | break; | |
669 | } | |
670 | ||
671 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
672 | ||
673 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
674 | if (copy_from_user((char *) &pwr, optval, len)) { | |
675 | err = -EFAULT; | |
676 | break; | |
677 | } | |
678 | chan->force_active = pwr.force_active; | |
679 | break; | |
680 | ||
33575df7 GP |
681 | default: |
682 | err = -ENOPROTOOPT; | |
683 | break; | |
684 | } | |
685 | ||
686 | release_sock(sk); | |
687 | return err; | |
688 | } | |
fd83ccdb GP |
689 | |
690 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len) | |
691 | { | |
692 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 693 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
694 | int err; |
695 | ||
696 | BT_DBG("sock %p, sk %p", sock, sk); | |
697 | ||
698 | err = sock_error(sk); | |
699 | if (err) | |
700 | return err; | |
701 | ||
702 | if (msg->msg_flags & MSG_OOB) | |
703 | return -EOPNOTSUPP; | |
704 | ||
705 | lock_sock(sk); | |
706 | ||
707 | if (sk->sk_state != BT_CONNECTED) { | |
9a91a04a GP |
708 | release_sock(sk); |
709 | return -ENOTCONN; | |
fd83ccdb GP |
710 | } |
711 | ||
9a91a04a | 712 | err = l2cap_chan_send(chan, msg, len); |
fd83ccdb | 713 | |
fd83ccdb GP |
714 | release_sock(sk); |
715 | return err; | |
716 | } | |
33575df7 | 717 | |
68983259 GP |
718 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) |
719 | { | |
720 | struct sock *sk = sock->sk; | |
e328140f MM |
721 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
722 | int err; | |
68983259 GP |
723 | |
724 | lock_sock(sk); | |
725 | ||
726 | if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) { | |
8c1d787b GP |
727 | sk->sk_state = BT_CONFIG; |
728 | ||
e328140f | 729 | __l2cap_connect_rsp_defer(pi->chan); |
68983259 GP |
730 | release_sock(sk); |
731 | return 0; | |
732 | } | |
733 | ||
734 | release_sock(sk); | |
735 | ||
736 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
737 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
738 | else | |
739 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
740 | ||
741 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
742 | return err; | |
743 | ||
744 | /* Attempt to put pending rx data in the socket buffer */ | |
745 | ||
746 | lock_sock(sk); | |
747 | ||
748 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
749 | goto done; | |
750 | ||
751 | if (pi->rx_busy_skb) { | |
752 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
753 | pi->rx_busy_skb = NULL; | |
754 | else | |
755 | goto done; | |
756 | } | |
757 | ||
758 | /* Restore data flow when half of the receive buffer is | |
759 | * available. This avoids resending large numbers of | |
760 | * frames. | |
761 | */ | |
762 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
763 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 764 | |
e328140f MM |
765 | done: |
766 | release_sock(sk); | |
767 | return err; | |
68983259 GP |
768 | } |
769 | ||
05fc1576 GP |
770 | /* Kill socket (only if zapped and orphan) |
771 | * Must be called on unlocked socket. | |
772 | */ | |
ba3bd0ee | 773 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
774 | { |
775 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
776 | return; | |
777 | ||
778 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
779 | ||
780 | /* Kill poor orphan */ | |
6ff5abbf | 781 | |
23691d75 | 782 | l2cap_chan_destroy(l2cap_pi(sk)->chan); |
05fc1576 GP |
783 | sock_set_flag(sk, SOCK_DEAD); |
784 | sock_put(sk); | |
785 | } | |
786 | ||
dcba0dba GP |
787 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
788 | { | |
789 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 790 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
dcba0dba GP |
791 | int err = 0; |
792 | ||
793 | BT_DBG("sock %p, sk %p", sock, sk); | |
794 | ||
795 | if (!sk) | |
796 | return 0; | |
797 | ||
798 | lock_sock(sk); | |
799 | if (!sk->sk_shutdown) { | |
0c1bc5c6 | 800 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
801 | err = __l2cap_wait_ack(sk); |
802 | ||
803 | sk->sk_shutdown = SHUTDOWN_MASK; | |
0f852724 | 804 | l2cap_chan_close(chan, 0); |
dcba0dba GP |
805 | |
806 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
807 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
808 | sk->sk_lingertime); | |
809 | } | |
810 | ||
811 | if (!err && sk->sk_err) | |
812 | err = -sk->sk_err; | |
813 | ||
814 | release_sock(sk); | |
815 | return err; | |
816 | } | |
817 | ||
554f05bb GP |
818 | static int l2cap_sock_release(struct socket *sock) |
819 | { | |
820 | struct sock *sk = sock->sk; | |
821 | int err; | |
822 | ||
823 | BT_DBG("sock %p, sk %p", sock, sk); | |
824 | ||
825 | if (!sk) | |
826 | return 0; | |
827 | ||
828 | err = l2cap_sock_shutdown(sock, 2); | |
829 | ||
830 | sock_orphan(sk); | |
831 | l2cap_sock_kill(sk); | |
832 | return err; | |
833 | } | |
834 | ||
80808e43 GP |
835 | static struct l2cap_chan *l2cap_sock_new_connection_cb(void *data) |
836 | { | |
837 | struct sock *sk, *parent = data; | |
838 | ||
839 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, | |
840 | GFP_ATOMIC); | |
841 | if (!sk) | |
842 | return NULL; | |
843 | ||
844 | l2cap_sock_init(sk, parent); | |
845 | ||
846 | return l2cap_pi(sk)->chan; | |
847 | } | |
848 | ||
23070494 GP |
849 | static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb) |
850 | { | |
e328140f | 851 | int err; |
23070494 | 852 | struct sock *sk = data; |
e328140f MM |
853 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
854 | ||
855 | if (pi->rx_busy_skb) | |
856 | return -ENOMEM; | |
857 | ||
858 | err = sock_queue_rcv_skb(sk, skb); | |
859 | ||
860 | /* For ERTM, handle one skb that doesn't fit into the recv | |
861 | * buffer. This is important to do because the data frames | |
862 | * have already been acked, so the skb cannot be discarded. | |
863 | * | |
864 | * Notify the l2cap core that the buffer is full, so the | |
865 | * LOCAL_BUSY state is entered and no more frames are | |
866 | * acked and reassembled until there is buffer space | |
867 | * available. | |
868 | */ | |
869 | if (err < 0 && pi->chan->mode == L2CAP_MODE_ERTM) { | |
870 | pi->rx_busy_skb = skb; | |
871 | l2cap_chan_busy(pi->chan, 1); | |
872 | err = 0; | |
873 | } | |
23070494 | 874 | |
e328140f | 875 | return err; |
23070494 GP |
876 | } |
877 | ||
ba3bd0ee GP |
878 | static void l2cap_sock_close_cb(void *data) |
879 | { | |
880 | struct sock *sk = data; | |
881 | ||
882 | l2cap_sock_kill(sk); | |
883 | } | |
884 | ||
89bc500e GP |
885 | static void l2cap_sock_state_change_cb(void *data, int state) |
886 | { | |
887 | struct sock *sk = data; | |
888 | ||
889 | sk->sk_state = state; | |
890 | } | |
891 | ||
80808e43 GP |
892 | static struct l2cap_ops l2cap_chan_ops = { |
893 | .name = "L2CAP Socket Interface", | |
894 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 895 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 896 | .close = l2cap_sock_close_cb, |
89bc500e | 897 | .state_change = l2cap_sock_state_change_cb, |
80808e43 GP |
898 | }; |
899 | ||
bb58f747 GP |
900 | static void l2cap_sock_destruct(struct sock *sk) |
901 | { | |
902 | BT_DBG("sk %p", sk); | |
903 | ||
e328140f MM |
904 | if (l2cap_pi(sk)->rx_busy_skb) { |
905 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
906 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
907 | } | |
908 | ||
bb58f747 GP |
909 | skb_queue_purge(&sk->sk_receive_queue); |
910 | skb_queue_purge(&sk->sk_write_queue); | |
911 | } | |
912 | ||
80808e43 | 913 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 GP |
914 | { |
915 | struct l2cap_pinfo *pi = l2cap_pi(sk); | |
b4450035 | 916 | struct l2cap_chan *chan = pi->chan; |
bb58f747 GP |
917 | |
918 | BT_DBG("sk %p", sk); | |
919 | ||
920 | if (parent) { | |
b4450035 GP |
921 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
922 | ||
bb58f747 GP |
923 | sk->sk_type = parent->sk_type; |
924 | bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup; | |
925 | ||
715ec005 | 926 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
927 | chan->imtu = pchan->imtu; |
928 | chan->omtu = pchan->omtu; | |
b4450035 | 929 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 930 | chan->mode = pchan->mode; |
47d1ec61 GP |
931 | chan->fcs = pchan->fcs; |
932 | chan->max_tx = pchan->max_tx; | |
933 | chan->tx_win = pchan->tx_win; | |
4343478f GP |
934 | chan->sec_level = pchan->sec_level; |
935 | chan->role_switch = pchan->role_switch; | |
936 | chan->force_reliable = pchan->force_reliable; | |
937 | chan->flushable = pchan->flushable; | |
14b12d0b | 938 | chan->force_active = pchan->force_active; |
6230c9b4 PM |
939 | |
940 | security_sk_clone(parent, sk); | |
bb58f747 | 941 | } else { |
715ec005 GP |
942 | |
943 | switch (sk->sk_type) { | |
944 | case SOCK_RAW: | |
945 | chan->chan_type = L2CAP_CHAN_RAW; | |
946 | break; | |
947 | case SOCK_DGRAM: | |
948 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
949 | break; | |
950 | case SOCK_SEQPACKET: | |
951 | case SOCK_STREAM: | |
952 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
953 | break; | |
954 | } | |
955 | ||
0c1bc5c6 GP |
956 | chan->imtu = L2CAP_DEFAULT_MTU; |
957 | chan->omtu = 0; | |
bb58f747 | 958 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 959 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 960 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 961 | } else { |
0c1bc5c6 | 962 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 963 | } |
47d1ec61 GP |
964 | chan->max_tx = L2CAP_DEFAULT_MAX_TX; |
965 | chan->fcs = L2CAP_FCS_CRC16; | |
966 | chan->tx_win = L2CAP_DEFAULT_TX_WINDOW; | |
4343478f GP |
967 | chan->sec_level = BT_SECURITY_LOW; |
968 | chan->role_switch = 0; | |
969 | chan->force_reliable = 0; | |
970 | chan->flushable = BT_FLUSHABLE_OFF; | |
14b12d0b | 971 | chan->force_active = BT_POWER_FORCE_ACTIVE_ON; |
80808e43 | 972 | |
bb58f747 GP |
973 | } |
974 | ||
975 | /* Default config options */ | |
0c1bc5c6 | 976 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
977 | |
978 | chan->data = sk; | |
979 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
980 | } |
981 | ||
982 | static struct proto l2cap_proto = { | |
983 | .name = "L2CAP", | |
984 | .owner = THIS_MODULE, | |
985 | .obj_size = sizeof(struct l2cap_pinfo) | |
986 | }; | |
987 | ||
80808e43 | 988 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
bb58f747 GP |
989 | { |
990 | struct sock *sk; | |
dc50a06d | 991 | struct l2cap_chan *chan; |
bb58f747 GP |
992 | |
993 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
994 | if (!sk) | |
995 | return NULL; | |
996 | ||
997 | sock_init_data(sock, sk); | |
998 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
999 | ||
1000 | sk->sk_destruct = l2cap_sock_destruct; | |
6be6b11f | 1001 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
bb58f747 GP |
1002 | |
1003 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1004 | ||
1005 | sk->sk_protocol = proto; | |
1006 | sk->sk_state = BT_OPEN; | |
1007 | ||
dc50a06d GP |
1008 | chan = l2cap_chan_create(sk); |
1009 | if (!chan) { | |
1010 | l2cap_sock_kill(sk); | |
1011 | return NULL; | |
1012 | } | |
1013 | ||
1014 | l2cap_pi(sk)->chan = chan; | |
1015 | ||
bb58f747 GP |
1016 | return sk; |
1017 | } | |
1018 | ||
1019 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1020 | int kern) | |
1021 | { | |
1022 | struct sock *sk; | |
1023 | ||
1024 | BT_DBG("sock %p", sock); | |
1025 | ||
1026 | sock->state = SS_UNCONNECTED; | |
1027 | ||
1028 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
1029 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) | |
1030 | return -ESOCKTNOSUPPORT; | |
1031 | ||
1032 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1033 | return -EPERM; | |
1034 | ||
1035 | sock->ops = &l2cap_sock_ops; | |
1036 | ||
1037 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1038 | if (!sk) | |
1039 | return -ENOMEM; | |
1040 | ||
1041 | l2cap_sock_init(sk, NULL); | |
1042 | return 0; | |
1043 | } | |
1044 | ||
cf2f90f5 | 1045 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1046 | .family = PF_BLUETOOTH, |
1047 | .owner = THIS_MODULE, | |
1048 | .release = l2cap_sock_release, | |
1049 | .bind = l2cap_sock_bind, | |
1050 | .connect = l2cap_sock_connect, | |
1051 | .listen = l2cap_sock_listen, | |
1052 | .accept = l2cap_sock_accept, | |
1053 | .getname = l2cap_sock_getname, | |
1054 | .sendmsg = l2cap_sock_sendmsg, | |
1055 | .recvmsg = l2cap_sock_recvmsg, | |
1056 | .poll = bt_sock_poll, | |
1057 | .ioctl = bt_sock_ioctl, | |
1058 | .mmap = sock_no_mmap, | |
1059 | .socketpair = sock_no_socketpair, | |
1060 | .shutdown = l2cap_sock_shutdown, | |
1061 | .setsockopt = l2cap_sock_setsockopt, | |
1062 | .getsockopt = l2cap_sock_getsockopt | |
1063 | }; | |
1064 | ||
bb58f747 GP |
1065 | static const struct net_proto_family l2cap_sock_family_ops = { |
1066 | .family = PF_BLUETOOTH, | |
1067 | .owner = THIS_MODULE, | |
1068 | .create = l2cap_sock_create, | |
1069 | }; | |
1070 | ||
1071 | int __init l2cap_init_sockets(void) | |
1072 | { | |
e2174ca4 | 1073 | int err; |
bb58f747 | 1074 | |
e2174ca4 GP |
1075 | err = proto_register(&l2cap_proto, 0); |
1076 | if (err < 0) | |
1077 | return err; | |
bb58f747 | 1078 | |
e2174ca4 GP |
1079 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
1080 | if (err < 0) | |
1081 | goto error; | |
bb58f747 | 1082 | |
e2174ca4 | 1083 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1084 | |
e2174ca4 | 1085 | return 0; |
bb58f747 GP |
1086 | |
1087 | error: | |
e2174ca4 GP |
1088 | BT_ERR("L2CAP socket registration failed"); |
1089 | proto_unregister(&l2cap_proto); | |
1090 | return err; | |
bb58f747 GP |
1091 | } |
1092 | ||
1093 | void l2cap_cleanup_sockets(void) | |
1094 | { | |
e2174ca4 GP |
1095 | if (bt_sock_unregister(BTPROTO_L2CAP) < 0) |
1096 | BT_ERR("L2CAP socket unregistration failed"); | |
bb58f747 | 1097 | |
e2174ca4 | 1098 | proto_unregister(&l2cap_proto); |
bb58f747 | 1099 | } |