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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 | ||
6230c9b4 PM |
29 | #include <linux/security.h> |
30 | ||
bb58f747 | 31 | #include <net/bluetooth/bluetooth.h> |
33575df7 | 32 | #include <net/bluetooth/hci_core.h> |
bb58f747 | 33 | #include <net/bluetooth/l2cap.h> |
f1cb9af5 | 34 | #include <net/bluetooth/smp.h> |
bb58f747 | 35 | |
cf2f90f5 | 36 | static const struct proto_ops l2cap_sock_ops; |
80808e43 GP |
37 | static void l2cap_sock_init(struct sock *sk, struct sock *parent); |
38 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio); | |
cf2f90f5 | 39 | |
af6bcd82 GP |
40 | static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) |
41 | { | |
42 | struct sock *sk = sock->sk; | |
4343478f | 43 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
44 | struct sockaddr_l2 la; |
45 | int len, err = 0; | |
46 | ||
47 | BT_DBG("sk %p", sk); | |
48 | ||
49 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
50 | return -EINVAL; | |
51 | ||
52 | memset(&la, 0, sizeof(la)); | |
53 | len = min_t(unsigned int, sizeof(la), alen); | |
54 | memcpy(&la, addr, len); | |
55 | ||
b62f328b | 56 | if (la.l2_cid && la.l2_psm) |
af6bcd82 GP |
57 | return -EINVAL; |
58 | ||
59 | lock_sock(sk); | |
60 | ||
61 | if (sk->sk_state != BT_OPEN) { | |
62 | err = -EBADFD; | |
63 | goto done; | |
64 | } | |
65 | ||
66 | if (la.l2_psm) { | |
67 | __u16 psm = __le16_to_cpu(la.l2_psm); | |
68 | ||
69 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
70 | if ((psm & 0x0101) != 0x0001) { | |
71 | err = -EINVAL; | |
72 | goto done; | |
73 | } | |
74 | ||
75 | /* Restrict usage of well-known PSMs */ | |
76 | if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) { | |
77 | err = -EACCES; | |
78 | goto done; | |
79 | } | |
80 | } | |
81 | ||
9e4425ff GP |
82 | if (la.l2_cid) |
83 | err = l2cap_add_scid(chan, la.l2_cid); | |
84 | else | |
85 | err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); | |
af6bcd82 | 86 | |
9e4425ff GP |
87 | if (err < 0) |
88 | goto done; | |
af6bcd82 | 89 | |
9e4425ff GP |
90 | if (__le16_to_cpu(la.l2_psm) == 0x0001 || |
91 | __le16_to_cpu(la.l2_psm) == 0x0003) | |
92 | chan->sec_level = BT_SECURITY_SDP; | |
b62f328b | 93 | |
9e4425ff | 94 | bacpy(&bt_sk(sk)->src, &la.l2_bdaddr); |
89bc500e GP |
95 | |
96 | chan->state = BT_BOUND; | |
9e4425ff | 97 | sk->sk_state = BT_BOUND; |
af6bcd82 GP |
98 | |
99 | done: | |
100 | release_sock(sk); | |
101 | return err; | |
102 | } | |
103 | ||
4e34c50b GP |
104 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) |
105 | { | |
106 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 107 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
4e34c50b GP |
108 | struct sockaddr_l2 la; |
109 | int len, err = 0; | |
110 | ||
111 | BT_DBG("sk %p", sk); | |
112 | ||
113 | if (!addr || alen < sizeof(addr->sa_family) || | |
114 | addr->sa_family != AF_BLUETOOTH) | |
115 | return -EINVAL; | |
116 | ||
117 | memset(&la, 0, sizeof(la)); | |
118 | len = min_t(unsigned int, sizeof(la), alen); | |
119 | memcpy(&la, addr, len); | |
120 | ||
acd7d370 | 121 | if (la.l2_cid && la.l2_psm) |
4e34c50b GP |
122 | return -EINVAL; |
123 | ||
03a00194 | 124 | err = l2cap_chan_connect(chan, la.l2_psm, la.l2_cid, &la.l2_bdaddr); |
4e34c50b GP |
125 | if (err) |
126 | goto done; | |
127 | ||
4e34c50b GP |
128 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
129 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
130 | done: | |
03a00194 GP |
131 | if (sock_owned_by_user(sk)) |
132 | release_sock(sk); | |
4e34c50b GP |
133 | return err; |
134 | } | |
135 | ||
af6bcd82 GP |
136 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
137 | { | |
138 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 139 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
140 | int err = 0; |
141 | ||
142 | BT_DBG("sk %p backlog %d", sk, backlog); | |
143 | ||
144 | lock_sock(sk); | |
145 | ||
146 | if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) | |
147 | || sk->sk_state != BT_BOUND) { | |
148 | err = -EBADFD; | |
149 | goto done; | |
150 | } | |
151 | ||
0c1bc5c6 | 152 | switch (chan->mode) { |
af6bcd82 GP |
153 | case L2CAP_MODE_BASIC: |
154 | break; | |
155 | case L2CAP_MODE_ERTM: | |
156 | case L2CAP_MODE_STREAMING: | |
157 | if (!disable_ertm) | |
158 | break; | |
159 | /* fall through */ | |
160 | default: | |
161 | err = -ENOTSUPP; | |
162 | goto done; | |
163 | } | |
164 | ||
af6bcd82 GP |
165 | sk->sk_max_ack_backlog = backlog; |
166 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
167 | |
168 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
169 | sk->sk_state = BT_LISTEN; |
170 | ||
171 | done: | |
172 | release_sock(sk); | |
173 | return err; | |
174 | } | |
175 | ||
c47b7c72 GP |
176 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags) |
177 | { | |
178 | DECLARE_WAITQUEUE(wait, current); | |
179 | struct sock *sk = sock->sk, *nsk; | |
180 | long timeo; | |
181 | int err = 0; | |
182 | ||
183 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
184 | ||
c47b7c72 GP |
185 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
186 | ||
187 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
188 | ||
189 | /* Wait for an incoming connection. (wake-one). */ | |
190 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 191 | while (1) { |
c47b7c72 | 192 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
193 | |
194 | if (sk->sk_state != BT_LISTEN) { | |
195 | err = -EBADFD; | |
c47b7c72 GP |
196 | break; |
197 | } | |
198 | ||
f9a3c20a PH |
199 | nsk = bt_accept_dequeue(sk, newsock); |
200 | if (nsk) | |
201 | break; | |
c47b7c72 | 202 | |
f9a3c20a PH |
203 | if (!timeo) { |
204 | err = -EAGAIN; | |
c47b7c72 GP |
205 | break; |
206 | } | |
207 | ||
208 | if (signal_pending(current)) { | |
209 | err = sock_intr_errno(timeo); | |
210 | break; | |
211 | } | |
f9a3c20a PH |
212 | |
213 | release_sock(sk); | |
214 | timeo = schedule_timeout(timeo); | |
215 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 216 | } |
f9a3c20a | 217 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
218 | remove_wait_queue(sk_sleep(sk), &wait); |
219 | ||
220 | if (err) | |
221 | goto done; | |
222 | ||
223 | newsock->state = SS_CONNECTED; | |
224 | ||
225 | BT_DBG("new socket %p", nsk); | |
226 | ||
227 | done: | |
228 | release_sock(sk); | |
229 | return err; | |
230 | } | |
231 | ||
d7175d55 GP |
232 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) |
233 | { | |
234 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
235 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 236 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
237 | |
238 | BT_DBG("sock %p, sk %p", sock, sk); | |
239 | ||
240 | addr->sa_family = AF_BLUETOOTH; | |
241 | *len = sizeof(struct sockaddr_l2); | |
242 | ||
243 | if (peer) { | |
fe4128e0 | 244 | la->l2_psm = chan->psm; |
d7175d55 | 245 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst); |
fe4128e0 | 246 | la->l2_cid = cpu_to_le16(chan->dcid); |
d7175d55 | 247 | } else { |
0c1bc5c6 | 248 | la->l2_psm = chan->sport; |
d7175d55 | 249 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->src); |
fe4128e0 | 250 | la->l2_cid = cpu_to_le16(chan->scid); |
d7175d55 GP |
251 | } |
252 | ||
253 | return 0; | |
254 | } | |
255 | ||
99f4808d GP |
256 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
257 | { | |
258 | struct sock *sk = sock->sk; | |
4343478f | 259 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
260 | struct l2cap_options opts; |
261 | struct l2cap_conninfo cinfo; | |
262 | int len, err = 0; | |
263 | u32 opt; | |
264 | ||
265 | BT_DBG("sk %p", sk); | |
266 | ||
267 | if (get_user(len, optlen)) | |
268 | return -EFAULT; | |
269 | ||
270 | lock_sock(sk); | |
271 | ||
272 | switch (optname) { | |
273 | case L2CAP_OPTIONS: | |
e3fb592b | 274 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
275 | opts.imtu = chan->imtu; |
276 | opts.omtu = chan->omtu; | |
277 | opts.flush_to = chan->flush_to; | |
278 | opts.mode = chan->mode; | |
47d1ec61 GP |
279 | opts.fcs = chan->fcs; |
280 | opts.max_tx = chan->max_tx; | |
6327eb98 | 281 | opts.txwin_size = chan->tx_win; |
99f4808d GP |
282 | |
283 | len = min_t(unsigned int, len, sizeof(opts)); | |
284 | if (copy_to_user(optval, (char *) &opts, len)) | |
285 | err = -EFAULT; | |
286 | ||
287 | break; | |
288 | ||
289 | case L2CAP_LM: | |
4343478f | 290 | switch (chan->sec_level) { |
99f4808d GP |
291 | case BT_SECURITY_LOW: |
292 | opt = L2CAP_LM_AUTH; | |
293 | break; | |
294 | case BT_SECURITY_MEDIUM: | |
295 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
296 | break; | |
297 | case BT_SECURITY_HIGH: | |
298 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
299 | L2CAP_LM_SECURE; | |
300 | break; | |
301 | default: | |
302 | opt = 0; | |
303 | break; | |
304 | } | |
305 | ||
43bd0f32 | 306 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
307 | opt |= L2CAP_LM_MASTER; |
308 | ||
ecf61bdb | 309 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
310 | opt |= L2CAP_LM_RELIABLE; |
311 | ||
312 | if (put_user(opt, (u32 __user *) optval)) | |
313 | err = -EFAULT; | |
314 | break; | |
315 | ||
316 | case L2CAP_CONNINFO: | |
317 | if (sk->sk_state != BT_CONNECTED && | |
318 | !(sk->sk_state == BT_CONNECT2 && | |
319 | bt_sk(sk)->defer_setup)) { | |
320 | err = -ENOTCONN; | |
321 | break; | |
322 | } | |
323 | ||
8d03e971 | 324 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
325 | cinfo.hci_handle = chan->conn->hcon->handle; |
326 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
327 | |
328 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
329 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
330 | err = -EFAULT; | |
331 | ||
332 | break; | |
333 | ||
334 | default: | |
335 | err = -ENOPROTOOPT; | |
336 | break; | |
337 | } | |
338 | ||
339 | release_sock(sk); | |
340 | return err; | |
341 | } | |
342 | ||
343 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
344 | { | |
345 | struct sock *sk = sock->sk; | |
4343478f | 346 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 347 | struct bt_security sec; |
14b12d0b | 348 | struct bt_power pwr; |
99f4808d GP |
349 | int len, err = 0; |
350 | ||
351 | BT_DBG("sk %p", sk); | |
352 | ||
353 | if (level == SOL_L2CAP) | |
354 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
355 | ||
356 | if (level != SOL_BLUETOOTH) | |
357 | return -ENOPROTOOPT; | |
358 | ||
359 | if (get_user(len, optlen)) | |
360 | return -EFAULT; | |
361 | ||
362 | lock_sock(sk); | |
363 | ||
364 | switch (optname) { | |
365 | case BT_SECURITY: | |
715ec005 GP |
366 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
367 | chan->chan_type != L2CAP_CHAN_RAW) { | |
99f4808d GP |
368 | err = -EINVAL; |
369 | break; | |
370 | } | |
371 | ||
8f360119 | 372 | memset(&sec, 0, sizeof(sec)); |
4343478f | 373 | sec.level = chan->sec_level; |
99f4808d | 374 | |
8f360119 VCG |
375 | if (sk->sk_state == BT_CONNECTED) |
376 | sec.key_size = chan->conn->hcon->enc_key_size; | |
377 | ||
99f4808d GP |
378 | len = min_t(unsigned int, len, sizeof(sec)); |
379 | if (copy_to_user(optval, (char *) &sec, len)) | |
380 | err = -EFAULT; | |
381 | ||
382 | break; | |
383 | ||
384 | case BT_DEFER_SETUP: | |
385 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
386 | err = -EINVAL; | |
387 | break; | |
388 | } | |
389 | ||
390 | if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval)) | |
391 | err = -EFAULT; | |
392 | ||
393 | break; | |
394 | ||
395 | case BT_FLUSHABLE: | |
d57b0e8b AE |
396 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
397 | (u32 __user *) optval)) | |
99f4808d GP |
398 | err = -EFAULT; |
399 | ||
400 | break; | |
401 | ||
14b12d0b JG |
402 | case BT_POWER: |
403 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
404 | && sk->sk_type != SOCK_RAW) { | |
405 | err = -EINVAL; | |
406 | break; | |
407 | } | |
408 | ||
15770b1a | 409 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
410 | |
411 | len = min_t(unsigned int, len, sizeof(pwr)); | |
412 | if (copy_to_user(optval, (char *) &pwr, len)) | |
413 | err = -EFAULT; | |
414 | ||
415 | break; | |
416 | ||
2ea66482 MM |
417 | case BT_CHANNEL_POLICY: |
418 | if (!enable_hs) { | |
419 | err = -ENOPROTOOPT; | |
420 | break; | |
421 | } | |
422 | ||
423 | if (put_user(chan->chan_policy, (u32 __user *) optval)) | |
424 | err = -EFAULT; | |
425 | break; | |
426 | ||
99f4808d GP |
427 | default: |
428 | err = -ENOPROTOOPT; | |
429 | break; | |
430 | } | |
431 | ||
432 | release_sock(sk); | |
433 | return err; | |
434 | } | |
435 | ||
33575df7 GP |
436 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
437 | { | |
438 | struct sock *sk = sock->sk; | |
b4450035 | 439 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
440 | struct l2cap_options opts; |
441 | int len, err = 0; | |
442 | u32 opt; | |
443 | ||
444 | BT_DBG("sk %p", sk); | |
445 | ||
446 | lock_sock(sk); | |
447 | ||
448 | switch (optname) { | |
449 | case L2CAP_OPTIONS: | |
450 | if (sk->sk_state == BT_CONNECTED) { | |
451 | err = -EINVAL; | |
452 | break; | |
453 | } | |
454 | ||
0c1bc5c6 GP |
455 | opts.imtu = chan->imtu; |
456 | opts.omtu = chan->omtu; | |
457 | opts.flush_to = chan->flush_to; | |
458 | opts.mode = chan->mode; | |
47d1ec61 GP |
459 | opts.fcs = chan->fcs; |
460 | opts.max_tx = chan->max_tx; | |
6327eb98 | 461 | opts.txwin_size = chan->tx_win; |
33575df7 GP |
462 | |
463 | len = min_t(unsigned int, sizeof(opts), optlen); | |
464 | if (copy_from_user((char *) &opts, optval, len)) { | |
465 | err = -EFAULT; | |
466 | break; | |
467 | } | |
468 | ||
6327eb98 | 469 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
33575df7 GP |
470 | err = -EINVAL; |
471 | break; | |
472 | } | |
473 | ||
0c1bc5c6 GP |
474 | chan->mode = opts.mode; |
475 | switch (chan->mode) { | |
33575df7 | 476 | case L2CAP_MODE_BASIC: |
c1360a1c | 477 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
478 | break; |
479 | case L2CAP_MODE_ERTM: | |
480 | case L2CAP_MODE_STREAMING: | |
481 | if (!disable_ertm) | |
482 | break; | |
483 | /* fall through */ | |
484 | default: | |
485 | err = -EINVAL; | |
486 | break; | |
487 | } | |
488 | ||
0c1bc5c6 GP |
489 | chan->imtu = opts.imtu; |
490 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
491 | chan->fcs = opts.fcs; |
492 | chan->max_tx = opts.max_tx; | |
6327eb98 | 493 | chan->tx_win = opts.txwin_size; |
33575df7 GP |
494 | break; |
495 | ||
496 | case L2CAP_LM: | |
497 | if (get_user(opt, (u32 __user *) optval)) { | |
498 | err = -EFAULT; | |
499 | break; | |
500 | } | |
501 | ||
502 | if (opt & L2CAP_LM_AUTH) | |
4343478f | 503 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 504 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 505 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 506 | if (opt & L2CAP_LM_SECURE) |
4343478f | 507 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 508 | |
43bd0f32 AE |
509 | if (opt & L2CAP_LM_MASTER) |
510 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
511 | else | |
512 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
513 | |
514 | if (opt & L2CAP_LM_RELIABLE) | |
515 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
516 | else | |
517 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
518 | break; |
519 | ||
520 | default: | |
521 | err = -ENOPROTOOPT; | |
522 | break; | |
523 | } | |
524 | ||
525 | release_sock(sk); | |
526 | return err; | |
527 | } | |
528 | ||
529 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) | |
530 | { | |
531 | struct sock *sk = sock->sk; | |
4343478f | 532 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 533 | struct bt_security sec; |
14b12d0b | 534 | struct bt_power pwr; |
f1cb9af5 | 535 | struct l2cap_conn *conn; |
33575df7 GP |
536 | int len, err = 0; |
537 | u32 opt; | |
538 | ||
539 | BT_DBG("sk %p", sk); | |
540 | ||
541 | if (level == SOL_L2CAP) | |
542 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
543 | ||
544 | if (level != SOL_BLUETOOTH) | |
545 | return -ENOPROTOOPT; | |
546 | ||
547 | lock_sock(sk); | |
548 | ||
549 | switch (optname) { | |
550 | case BT_SECURITY: | |
715ec005 GP |
551 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
552 | chan->chan_type != L2CAP_CHAN_RAW) { | |
33575df7 GP |
553 | err = -EINVAL; |
554 | break; | |
555 | } | |
556 | ||
557 | sec.level = BT_SECURITY_LOW; | |
558 | ||
559 | len = min_t(unsigned int, sizeof(sec), optlen); | |
560 | if (copy_from_user((char *) &sec, optval, len)) { | |
561 | err = -EFAULT; | |
562 | break; | |
563 | } | |
564 | ||
565 | if (sec.level < BT_SECURITY_LOW || | |
566 | sec.level > BT_SECURITY_HIGH) { | |
567 | err = -EINVAL; | |
568 | break; | |
569 | } | |
570 | ||
4343478f | 571 | chan->sec_level = sec.level; |
f1cb9af5 | 572 | |
0bee1d60 GP |
573 | if (!chan->conn) |
574 | break; | |
575 | ||
f1cb9af5 | 576 | conn = chan->conn; |
0bee1d60 GP |
577 | |
578 | /*change security for LE channels */ | |
579 | if (chan->scid == L2CAP_CID_LE_DATA) { | |
f1cb9af5 VCG |
580 | if (!conn->hcon->out) { |
581 | err = -EINVAL; | |
582 | break; | |
583 | } | |
584 | ||
585 | if (smp_conn_security(conn, sec.level)) | |
586 | break; | |
f1cb9af5 | 587 | sk->sk_state = BT_CONFIG; |
0bee1d60 GP |
588 | |
589 | /* or for ACL link, under defer_setup time */ | |
590 | } else if (sk->sk_state == BT_CONNECT2 && | |
591 | bt_sk(sk)->defer_setup) { | |
592 | err = l2cap_chan_check_security(chan); | |
593 | } else { | |
594 | err = -EINVAL; | |
f1cb9af5 | 595 | } |
33575df7 GP |
596 | break; |
597 | ||
598 | case BT_DEFER_SETUP: | |
599 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
600 | err = -EINVAL; | |
601 | break; | |
602 | } | |
603 | ||
604 | if (get_user(opt, (u32 __user *) optval)) { | |
605 | err = -EFAULT; | |
606 | break; | |
607 | } | |
608 | ||
609 | bt_sk(sk)->defer_setup = opt; | |
610 | break; | |
611 | ||
612 | case BT_FLUSHABLE: | |
613 | if (get_user(opt, (u32 __user *) optval)) { | |
614 | err = -EFAULT; | |
615 | break; | |
616 | } | |
617 | ||
618 | if (opt > BT_FLUSHABLE_ON) { | |
619 | err = -EINVAL; | |
620 | break; | |
621 | } | |
622 | ||
623 | if (opt == BT_FLUSHABLE_OFF) { | |
8c1d787b | 624 | struct l2cap_conn *conn = chan->conn; |
25985edc | 625 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
626 | No Flush support in the LM */ |
627 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
628 | err = -EINVAL; | |
629 | break; | |
630 | } | |
631 | } | |
632 | ||
d57b0e8b AE |
633 | if (opt) |
634 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
635 | else | |
636 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
637 | break; |
638 | ||
14b12d0b JG |
639 | case BT_POWER: |
640 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
641 | chan->chan_type != L2CAP_CHAN_RAW) { | |
642 | err = -EINVAL; | |
643 | break; | |
644 | } | |
645 | ||
646 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
647 | ||
648 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
649 | if (copy_from_user((char *) &pwr, optval, len)) { | |
650 | err = -EFAULT; | |
651 | break; | |
652 | } | |
15770b1a AE |
653 | |
654 | if (pwr.force_active) | |
655 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
656 | else | |
657 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
658 | break; |
659 | ||
2ea66482 MM |
660 | case BT_CHANNEL_POLICY: |
661 | if (!enable_hs) { | |
662 | err = -ENOPROTOOPT; | |
663 | break; | |
664 | } | |
665 | ||
666 | if (get_user(opt, (u32 __user *) optval)) { | |
667 | err = -EFAULT; | |
668 | break; | |
669 | } | |
670 | ||
671 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { | |
672 | err = -EINVAL; | |
673 | break; | |
674 | } | |
675 | ||
676 | if (chan->mode != L2CAP_MODE_ERTM && | |
677 | chan->mode != L2CAP_MODE_STREAMING) { | |
678 | err = -EOPNOTSUPP; | |
679 | break; | |
680 | } | |
681 | ||
682 | chan->chan_policy = (u8) opt; | |
14b12d0b JG |
683 | break; |
684 | ||
33575df7 GP |
685 | default: |
686 | err = -ENOPROTOOPT; | |
687 | break; | |
688 | } | |
689 | ||
690 | release_sock(sk); | |
691 | return err; | |
692 | } | |
fd83ccdb GP |
693 | |
694 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len) | |
695 | { | |
696 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 697 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
698 | int err; |
699 | ||
700 | BT_DBG("sock %p, sk %p", sock, sk); | |
701 | ||
702 | err = sock_error(sk); | |
703 | if (err) | |
704 | return err; | |
705 | ||
706 | if (msg->msg_flags & MSG_OOB) | |
707 | return -EOPNOTSUPP; | |
708 | ||
709 | lock_sock(sk); | |
710 | ||
711 | if (sk->sk_state != BT_CONNECTED) { | |
9a91a04a GP |
712 | release_sock(sk); |
713 | return -ENOTCONN; | |
fd83ccdb GP |
714 | } |
715 | ||
5e59b791 | 716 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
fd83ccdb | 717 | |
fd83ccdb GP |
718 | release_sock(sk); |
719 | return err; | |
720 | } | |
33575df7 | 721 | |
68983259 GP |
722 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) |
723 | { | |
724 | struct sock *sk = sock->sk; | |
e328140f MM |
725 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
726 | int err; | |
68983259 GP |
727 | |
728 | lock_sock(sk); | |
729 | ||
730 | if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) { | |
8c1d787b GP |
731 | sk->sk_state = BT_CONFIG; |
732 | ||
e328140f | 733 | __l2cap_connect_rsp_defer(pi->chan); |
68983259 GP |
734 | release_sock(sk); |
735 | return 0; | |
736 | } | |
737 | ||
738 | release_sock(sk); | |
739 | ||
740 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
741 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
742 | else | |
743 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
744 | ||
745 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
746 | return err; | |
747 | ||
748 | /* Attempt to put pending rx data in the socket buffer */ | |
749 | ||
750 | lock_sock(sk); | |
751 | ||
752 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
753 | goto done; | |
754 | ||
755 | if (pi->rx_busy_skb) { | |
756 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
757 | pi->rx_busy_skb = NULL; | |
758 | else | |
759 | goto done; | |
760 | } | |
761 | ||
762 | /* Restore data flow when half of the receive buffer is | |
763 | * available. This avoids resending large numbers of | |
764 | * frames. | |
765 | */ | |
766 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
767 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 768 | |
e328140f MM |
769 | done: |
770 | release_sock(sk); | |
771 | return err; | |
68983259 GP |
772 | } |
773 | ||
05fc1576 GP |
774 | /* Kill socket (only if zapped and orphan) |
775 | * Must be called on unlocked socket. | |
776 | */ | |
ba3bd0ee | 777 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
778 | { |
779 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
780 | return; | |
781 | ||
782 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
783 | ||
784 | /* Kill poor orphan */ | |
6ff5abbf | 785 | |
23691d75 | 786 | l2cap_chan_destroy(l2cap_pi(sk)->chan); |
05fc1576 GP |
787 | sock_set_flag(sk, SOCK_DEAD); |
788 | sock_put(sk); | |
789 | } | |
790 | ||
dcba0dba GP |
791 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
792 | { | |
793 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 794 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
dcba0dba GP |
795 | int err = 0; |
796 | ||
797 | BT_DBG("sock %p, sk %p", sock, sk); | |
798 | ||
799 | if (!sk) | |
800 | return 0; | |
801 | ||
802 | lock_sock(sk); | |
803 | if (!sk->sk_shutdown) { | |
0c1bc5c6 | 804 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
805 | err = __l2cap_wait_ack(sk); |
806 | ||
807 | sk->sk_shutdown = SHUTDOWN_MASK; | |
0f852724 | 808 | l2cap_chan_close(chan, 0); |
dcba0dba GP |
809 | |
810 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
811 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
812 | sk->sk_lingertime); | |
813 | } | |
814 | ||
815 | if (!err && sk->sk_err) | |
816 | err = -sk->sk_err; | |
817 | ||
818 | release_sock(sk); | |
819 | return err; | |
820 | } | |
821 | ||
554f05bb GP |
822 | static int l2cap_sock_release(struct socket *sock) |
823 | { | |
824 | struct sock *sk = sock->sk; | |
825 | int err; | |
826 | ||
827 | BT_DBG("sock %p, sk %p", sock, sk); | |
828 | ||
829 | if (!sk) | |
830 | return 0; | |
831 | ||
832 | err = l2cap_sock_shutdown(sock, 2); | |
833 | ||
834 | sock_orphan(sk); | |
835 | l2cap_sock_kill(sk); | |
836 | return err; | |
837 | } | |
838 | ||
80808e43 GP |
839 | static struct l2cap_chan *l2cap_sock_new_connection_cb(void *data) |
840 | { | |
841 | struct sock *sk, *parent = data; | |
842 | ||
843 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, | |
844 | GFP_ATOMIC); | |
845 | if (!sk) | |
846 | return NULL; | |
847 | ||
848 | l2cap_sock_init(sk, parent); | |
849 | ||
850 | return l2cap_pi(sk)->chan; | |
851 | } | |
852 | ||
23070494 GP |
853 | static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb) |
854 | { | |
e328140f | 855 | int err; |
23070494 | 856 | struct sock *sk = data; |
e328140f MM |
857 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
858 | ||
859 | if (pi->rx_busy_skb) | |
860 | return -ENOMEM; | |
861 | ||
862 | err = sock_queue_rcv_skb(sk, skb); | |
863 | ||
864 | /* For ERTM, handle one skb that doesn't fit into the recv | |
865 | * buffer. This is important to do because the data frames | |
866 | * have already been acked, so the skb cannot be discarded. | |
867 | * | |
868 | * Notify the l2cap core that the buffer is full, so the | |
869 | * LOCAL_BUSY state is entered and no more frames are | |
870 | * acked and reassembled until there is buffer space | |
871 | * available. | |
872 | */ | |
873 | if (err < 0 && pi->chan->mode == L2CAP_MODE_ERTM) { | |
874 | pi->rx_busy_skb = skb; | |
875 | l2cap_chan_busy(pi->chan, 1); | |
876 | err = 0; | |
877 | } | |
23070494 | 878 | |
e328140f | 879 | return err; |
23070494 GP |
880 | } |
881 | ||
ba3bd0ee GP |
882 | static void l2cap_sock_close_cb(void *data) |
883 | { | |
884 | struct sock *sk = data; | |
885 | ||
886 | l2cap_sock_kill(sk); | |
887 | } | |
888 | ||
89bc500e GP |
889 | static void l2cap_sock_state_change_cb(void *data, int state) |
890 | { | |
891 | struct sock *sk = data; | |
892 | ||
893 | sk->sk_state = state; | |
894 | } | |
895 | ||
80808e43 GP |
896 | static struct l2cap_ops l2cap_chan_ops = { |
897 | .name = "L2CAP Socket Interface", | |
898 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 899 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 900 | .close = l2cap_sock_close_cb, |
89bc500e | 901 | .state_change = l2cap_sock_state_change_cb, |
80808e43 GP |
902 | }; |
903 | ||
bb58f747 GP |
904 | static void l2cap_sock_destruct(struct sock *sk) |
905 | { | |
906 | BT_DBG("sk %p", sk); | |
907 | ||
e328140f MM |
908 | if (l2cap_pi(sk)->rx_busy_skb) { |
909 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
910 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
911 | } | |
912 | ||
bb58f747 GP |
913 | skb_queue_purge(&sk->sk_receive_queue); |
914 | skb_queue_purge(&sk->sk_write_queue); | |
915 | } | |
916 | ||
80808e43 | 917 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 GP |
918 | { |
919 | struct l2cap_pinfo *pi = l2cap_pi(sk); | |
b4450035 | 920 | struct l2cap_chan *chan = pi->chan; |
bb58f747 GP |
921 | |
922 | BT_DBG("sk %p", sk); | |
923 | ||
924 | if (parent) { | |
b4450035 GP |
925 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
926 | ||
bb58f747 GP |
927 | sk->sk_type = parent->sk_type; |
928 | bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup; | |
929 | ||
715ec005 | 930 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
931 | chan->imtu = pchan->imtu; |
932 | chan->omtu = pchan->omtu; | |
b4450035 | 933 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 934 | chan->mode = pchan->mode; |
47d1ec61 GP |
935 | chan->fcs = pchan->fcs; |
936 | chan->max_tx = pchan->max_tx; | |
937 | chan->tx_win = pchan->tx_win; | |
6b3c7104 | 938 | chan->tx_win_max = pchan->tx_win_max; |
4343478f | 939 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 940 | chan->flags = pchan->flags; |
6230c9b4 PM |
941 | |
942 | security_sk_clone(parent, sk); | |
bb58f747 | 943 | } else { |
715ec005 GP |
944 | |
945 | switch (sk->sk_type) { | |
946 | case SOCK_RAW: | |
947 | chan->chan_type = L2CAP_CHAN_RAW; | |
948 | break; | |
949 | case SOCK_DGRAM: | |
950 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
951 | break; | |
952 | case SOCK_SEQPACKET: | |
953 | case SOCK_STREAM: | |
954 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
955 | break; | |
956 | } | |
957 | ||
0c1bc5c6 GP |
958 | chan->imtu = L2CAP_DEFAULT_MTU; |
959 | chan->omtu = 0; | |
bb58f747 | 960 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 961 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 962 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 963 | } else { |
0c1bc5c6 | 964 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 965 | } |
47d1ec61 GP |
966 | chan->max_tx = L2CAP_DEFAULT_MAX_TX; |
967 | chan->fcs = L2CAP_FCS_CRC16; | |
968 | chan->tx_win = L2CAP_DEFAULT_TX_WINDOW; | |
6b3c7104 | 969 | chan->tx_win_max = L2CAP_DEFAULT_TX_WINDOW; |
4343478f | 970 | chan->sec_level = BT_SECURITY_LOW; |
d57b0e8b | 971 | chan->flags = 0; |
15770b1a | 972 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
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 | } |