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. | |
590051de | 6 | Copyright (C) 2011 ProFUSION Embedded Systems |
bb58f747 GP |
7 | |
8 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License version 2 as | |
12 | published by the Free Software Foundation; | |
13 | ||
14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
15 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
17 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
18 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES | |
19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
21 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
22 | ||
23 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, | |
24 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
25 | SOFTWARE IS DISCLAIMED. | |
26 | */ | |
27 | ||
28 | /* Bluetooth L2CAP sockets. */ | |
29 | ||
6230c9b4 | 30 | #include <linux/security.h> |
bc3b2d7f | 31 | #include <linux/export.h> |
6230c9b4 | 32 | |
bb58f747 | 33 | #include <net/bluetooth/bluetooth.h> |
33575df7 | 34 | #include <net/bluetooth/hci_core.h> |
bb58f747 | 35 | #include <net/bluetooth/l2cap.h> |
f1cb9af5 | 36 | #include <net/bluetooth/smp.h> |
bb58f747 | 37 | |
cf2f90f5 | 38 | static const struct proto_ops l2cap_sock_ops; |
80808e43 GP |
39 | static void l2cap_sock_init(struct sock *sk, struct sock *parent); |
40 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio); | |
cf2f90f5 | 41 | |
af6bcd82 GP |
42 | static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) |
43 | { | |
44 | struct sock *sk = sock->sk; | |
4343478f | 45 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
46 | struct sockaddr_l2 la; |
47 | int len, err = 0; | |
48 | ||
49 | BT_DBG("sk %p", sk); | |
50 | ||
51 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
52 | return -EINVAL; | |
53 | ||
54 | memset(&la, 0, sizeof(la)); | |
55 | len = min_t(unsigned int, sizeof(la), alen); | |
56 | memcpy(&la, addr, len); | |
57 | ||
b62f328b | 58 | if (la.l2_cid && la.l2_psm) |
af6bcd82 GP |
59 | return -EINVAL; |
60 | ||
61 | lock_sock(sk); | |
62 | ||
63 | if (sk->sk_state != BT_OPEN) { | |
64 | err = -EBADFD; | |
65 | goto done; | |
66 | } | |
67 | ||
68 | if (la.l2_psm) { | |
69 | __u16 psm = __le16_to_cpu(la.l2_psm); | |
70 | ||
71 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
72 | if ((psm & 0x0101) != 0x0001) { | |
73 | err = -EINVAL; | |
74 | goto done; | |
75 | } | |
76 | ||
77 | /* Restrict usage of well-known PSMs */ | |
78 | if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) { | |
79 | err = -EACCES; | |
80 | goto done; | |
81 | } | |
82 | } | |
83 | ||
9e4425ff GP |
84 | if (la.l2_cid) |
85 | err = l2cap_add_scid(chan, la.l2_cid); | |
86 | else | |
87 | err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); | |
af6bcd82 | 88 | |
9e4425ff GP |
89 | if (err < 0) |
90 | goto done; | |
af6bcd82 | 91 | |
9e4425ff GP |
92 | if (__le16_to_cpu(la.l2_psm) == 0x0001 || |
93 | __le16_to_cpu(la.l2_psm) == 0x0003) | |
94 | chan->sec_level = BT_SECURITY_SDP; | |
b62f328b | 95 | |
9e4425ff | 96 | bacpy(&bt_sk(sk)->src, &la.l2_bdaddr); |
89bc500e GP |
97 | |
98 | chan->state = BT_BOUND; | |
9e4425ff | 99 | sk->sk_state = BT_BOUND; |
af6bcd82 GP |
100 | |
101 | done: | |
102 | release_sock(sk); | |
103 | return err; | |
104 | } | |
105 | ||
4e34c50b GP |
106 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) |
107 | { | |
108 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 109 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
4e34c50b GP |
110 | struct sockaddr_l2 la; |
111 | int len, err = 0; | |
112 | ||
113 | BT_DBG("sk %p", sk); | |
114 | ||
115 | if (!addr || alen < sizeof(addr->sa_family) || | |
116 | addr->sa_family != AF_BLUETOOTH) | |
117 | return -EINVAL; | |
118 | ||
119 | memset(&la, 0, sizeof(la)); | |
120 | len = min_t(unsigned int, sizeof(la), alen); | |
121 | memcpy(&la, addr, len); | |
122 | ||
acd7d370 | 123 | if (la.l2_cid && la.l2_psm) |
4e34c50b GP |
124 | return -EINVAL; |
125 | ||
03a00194 | 126 | err = l2cap_chan_connect(chan, la.l2_psm, la.l2_cid, &la.l2_bdaddr); |
4e34c50b GP |
127 | if (err) |
128 | goto done; | |
129 | ||
4e34c50b GP |
130 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
131 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
132 | done: | |
03a00194 GP |
133 | if (sock_owned_by_user(sk)) |
134 | release_sock(sk); | |
4e34c50b GP |
135 | return err; |
136 | } | |
137 | ||
af6bcd82 GP |
138 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
139 | { | |
140 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 141 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
142 | int err = 0; |
143 | ||
144 | BT_DBG("sk %p backlog %d", sk, backlog); | |
145 | ||
146 | lock_sock(sk); | |
147 | ||
148 | if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) | |
149 | || sk->sk_state != BT_BOUND) { | |
150 | err = -EBADFD; | |
151 | goto done; | |
152 | } | |
153 | ||
0c1bc5c6 | 154 | switch (chan->mode) { |
af6bcd82 GP |
155 | case L2CAP_MODE_BASIC: |
156 | break; | |
157 | case L2CAP_MODE_ERTM: | |
158 | case L2CAP_MODE_STREAMING: | |
159 | if (!disable_ertm) | |
160 | break; | |
161 | /* fall through */ | |
162 | default: | |
163 | err = -ENOTSUPP; | |
164 | goto done; | |
165 | } | |
166 | ||
af6bcd82 GP |
167 | sk->sk_max_ack_backlog = backlog; |
168 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
169 | |
170 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
171 | sk->sk_state = BT_LISTEN; |
172 | ||
173 | done: | |
174 | release_sock(sk); | |
175 | return err; | |
176 | } | |
177 | ||
c47b7c72 GP |
178 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags) |
179 | { | |
180 | DECLARE_WAITQUEUE(wait, current); | |
181 | struct sock *sk = sock->sk, *nsk; | |
182 | long timeo; | |
183 | int err = 0; | |
184 | ||
185 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
186 | ||
c47b7c72 GP |
187 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
188 | ||
189 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
190 | ||
191 | /* Wait for an incoming connection. (wake-one). */ | |
192 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 193 | while (1) { |
c47b7c72 | 194 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
195 | |
196 | if (sk->sk_state != BT_LISTEN) { | |
197 | err = -EBADFD; | |
c47b7c72 GP |
198 | break; |
199 | } | |
200 | ||
f9a3c20a PH |
201 | nsk = bt_accept_dequeue(sk, newsock); |
202 | if (nsk) | |
203 | break; | |
c47b7c72 | 204 | |
f9a3c20a PH |
205 | if (!timeo) { |
206 | err = -EAGAIN; | |
c47b7c72 GP |
207 | break; |
208 | } | |
209 | ||
210 | if (signal_pending(current)) { | |
211 | err = sock_intr_errno(timeo); | |
212 | break; | |
213 | } | |
f9a3c20a PH |
214 | |
215 | release_sock(sk); | |
216 | timeo = schedule_timeout(timeo); | |
217 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 218 | } |
f9a3c20a | 219 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
220 | remove_wait_queue(sk_sleep(sk), &wait); |
221 | ||
222 | if (err) | |
223 | goto done; | |
224 | ||
225 | newsock->state = SS_CONNECTED; | |
226 | ||
227 | BT_DBG("new socket %p", nsk); | |
228 | ||
229 | done: | |
230 | release_sock(sk); | |
231 | return err; | |
232 | } | |
233 | ||
d7175d55 GP |
234 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) |
235 | { | |
236 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
237 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 238 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
239 | |
240 | BT_DBG("sock %p, sk %p", sock, sk); | |
241 | ||
242 | addr->sa_family = AF_BLUETOOTH; | |
243 | *len = sizeof(struct sockaddr_l2); | |
244 | ||
245 | if (peer) { | |
fe4128e0 | 246 | la->l2_psm = chan->psm; |
d7175d55 | 247 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst); |
fe4128e0 | 248 | la->l2_cid = cpu_to_le16(chan->dcid); |
d7175d55 | 249 | } else { |
0c1bc5c6 | 250 | la->l2_psm = chan->sport; |
d7175d55 | 251 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->src); |
fe4128e0 | 252 | la->l2_cid = cpu_to_le16(chan->scid); |
d7175d55 GP |
253 | } |
254 | ||
255 | return 0; | |
256 | } | |
257 | ||
99f4808d GP |
258 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
259 | { | |
260 | struct sock *sk = sock->sk; | |
4343478f | 261 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
262 | struct l2cap_options opts; |
263 | struct l2cap_conninfo cinfo; | |
264 | int len, err = 0; | |
265 | u32 opt; | |
266 | ||
267 | BT_DBG("sk %p", sk); | |
268 | ||
269 | if (get_user(len, optlen)) | |
270 | return -EFAULT; | |
271 | ||
272 | lock_sock(sk); | |
273 | ||
274 | switch (optname) { | |
275 | case L2CAP_OPTIONS: | |
e3fb592b | 276 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
277 | opts.imtu = chan->imtu; |
278 | opts.omtu = chan->omtu; | |
279 | opts.flush_to = chan->flush_to; | |
280 | opts.mode = chan->mode; | |
47d1ec61 GP |
281 | opts.fcs = chan->fcs; |
282 | opts.max_tx = chan->max_tx; | |
6327eb98 | 283 | opts.txwin_size = chan->tx_win; |
99f4808d GP |
284 | |
285 | len = min_t(unsigned int, len, sizeof(opts)); | |
286 | if (copy_to_user(optval, (char *) &opts, len)) | |
287 | err = -EFAULT; | |
288 | ||
289 | break; | |
290 | ||
291 | case L2CAP_LM: | |
4343478f | 292 | switch (chan->sec_level) { |
99f4808d GP |
293 | case BT_SECURITY_LOW: |
294 | opt = L2CAP_LM_AUTH; | |
295 | break; | |
296 | case BT_SECURITY_MEDIUM: | |
297 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
298 | break; | |
299 | case BT_SECURITY_HIGH: | |
300 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
301 | L2CAP_LM_SECURE; | |
302 | break; | |
303 | default: | |
304 | opt = 0; | |
305 | break; | |
306 | } | |
307 | ||
43bd0f32 | 308 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
309 | opt |= L2CAP_LM_MASTER; |
310 | ||
ecf61bdb | 311 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
312 | opt |= L2CAP_LM_RELIABLE; |
313 | ||
314 | if (put_user(opt, (u32 __user *) optval)) | |
315 | err = -EFAULT; | |
316 | break; | |
317 | ||
318 | case L2CAP_CONNINFO: | |
319 | if (sk->sk_state != BT_CONNECTED && | |
320 | !(sk->sk_state == BT_CONNECT2 && | |
321 | bt_sk(sk)->defer_setup)) { | |
322 | err = -ENOTCONN; | |
323 | break; | |
324 | } | |
325 | ||
8d03e971 | 326 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
327 | cinfo.hci_handle = chan->conn->hcon->handle; |
328 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
329 | |
330 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
331 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
332 | err = -EFAULT; | |
333 | ||
334 | break; | |
335 | ||
336 | default: | |
337 | err = -ENOPROTOOPT; | |
338 | break; | |
339 | } | |
340 | ||
341 | release_sock(sk); | |
342 | return err; | |
343 | } | |
344 | ||
345 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
346 | { | |
347 | struct sock *sk = sock->sk; | |
4343478f | 348 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 349 | struct bt_security sec; |
14b12d0b | 350 | struct bt_power pwr; |
99f4808d GP |
351 | int len, err = 0; |
352 | ||
353 | BT_DBG("sk %p", sk); | |
354 | ||
355 | if (level == SOL_L2CAP) | |
356 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
357 | ||
358 | if (level != SOL_BLUETOOTH) | |
359 | return -ENOPROTOOPT; | |
360 | ||
361 | if (get_user(len, optlen)) | |
362 | return -EFAULT; | |
363 | ||
364 | lock_sock(sk); | |
365 | ||
366 | switch (optname) { | |
367 | case BT_SECURITY: | |
715ec005 GP |
368 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
369 | chan->chan_type != L2CAP_CHAN_RAW) { | |
99f4808d GP |
370 | err = -EINVAL; |
371 | break; | |
372 | } | |
373 | ||
8f360119 | 374 | memset(&sec, 0, sizeof(sec)); |
4343478f | 375 | sec.level = chan->sec_level; |
99f4808d | 376 | |
8f360119 VCG |
377 | if (sk->sk_state == BT_CONNECTED) |
378 | sec.key_size = chan->conn->hcon->enc_key_size; | |
379 | ||
99f4808d GP |
380 | len = min_t(unsigned int, len, sizeof(sec)); |
381 | if (copy_to_user(optval, (char *) &sec, len)) | |
382 | err = -EFAULT; | |
383 | ||
384 | break; | |
385 | ||
386 | case BT_DEFER_SETUP: | |
387 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
388 | err = -EINVAL; | |
389 | break; | |
390 | } | |
391 | ||
392 | if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval)) | |
393 | err = -EFAULT; | |
394 | ||
395 | break; | |
396 | ||
397 | case BT_FLUSHABLE: | |
d57b0e8b AE |
398 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
399 | (u32 __user *) optval)) | |
99f4808d GP |
400 | err = -EFAULT; |
401 | ||
402 | break; | |
403 | ||
14b12d0b JG |
404 | case BT_POWER: |
405 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
406 | && sk->sk_type != SOCK_RAW) { | |
407 | err = -EINVAL; | |
408 | break; | |
409 | } | |
410 | ||
15770b1a | 411 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
412 | |
413 | len = min_t(unsigned int, len, sizeof(pwr)); | |
414 | if (copy_to_user(optval, (char *) &pwr, len)) | |
415 | err = -EFAULT; | |
416 | ||
417 | break; | |
418 | ||
2ea66482 MM |
419 | case BT_CHANNEL_POLICY: |
420 | if (!enable_hs) { | |
421 | err = -ENOPROTOOPT; | |
422 | break; | |
423 | } | |
424 | ||
425 | if (put_user(chan->chan_policy, (u32 __user *) optval)) | |
426 | err = -EFAULT; | |
427 | break; | |
428 | ||
99f4808d GP |
429 | default: |
430 | err = -ENOPROTOOPT; | |
431 | break; | |
432 | } | |
433 | ||
434 | release_sock(sk); | |
435 | return err; | |
436 | } | |
437 | ||
33575df7 GP |
438 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
439 | { | |
440 | struct sock *sk = sock->sk; | |
b4450035 | 441 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
442 | struct l2cap_options opts; |
443 | int len, err = 0; | |
444 | u32 opt; | |
445 | ||
446 | BT_DBG("sk %p", sk); | |
447 | ||
448 | lock_sock(sk); | |
449 | ||
450 | switch (optname) { | |
451 | case L2CAP_OPTIONS: | |
452 | if (sk->sk_state == BT_CONNECTED) { | |
453 | err = -EINVAL; | |
454 | break; | |
455 | } | |
456 | ||
0c1bc5c6 GP |
457 | opts.imtu = chan->imtu; |
458 | opts.omtu = chan->omtu; | |
459 | opts.flush_to = chan->flush_to; | |
460 | opts.mode = chan->mode; | |
47d1ec61 GP |
461 | opts.fcs = chan->fcs; |
462 | opts.max_tx = chan->max_tx; | |
6327eb98 | 463 | opts.txwin_size = chan->tx_win; |
33575df7 GP |
464 | |
465 | len = min_t(unsigned int, sizeof(opts), optlen); | |
466 | if (copy_from_user((char *) &opts, optval, len)) { | |
467 | err = -EFAULT; | |
468 | break; | |
469 | } | |
470 | ||
6327eb98 | 471 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
33575df7 GP |
472 | err = -EINVAL; |
473 | break; | |
474 | } | |
475 | ||
0c1bc5c6 GP |
476 | chan->mode = opts.mode; |
477 | switch (chan->mode) { | |
33575df7 | 478 | case L2CAP_MODE_BASIC: |
c1360a1c | 479 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
480 | break; |
481 | case L2CAP_MODE_ERTM: | |
482 | case L2CAP_MODE_STREAMING: | |
483 | if (!disable_ertm) | |
484 | break; | |
485 | /* fall through */ | |
486 | default: | |
487 | err = -EINVAL; | |
488 | break; | |
489 | } | |
490 | ||
0c1bc5c6 GP |
491 | chan->imtu = opts.imtu; |
492 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
493 | chan->fcs = opts.fcs; |
494 | chan->max_tx = opts.max_tx; | |
6327eb98 | 495 | chan->tx_win = opts.txwin_size; |
33575df7 GP |
496 | break; |
497 | ||
498 | case L2CAP_LM: | |
499 | if (get_user(opt, (u32 __user *) optval)) { | |
500 | err = -EFAULT; | |
501 | break; | |
502 | } | |
503 | ||
504 | if (opt & L2CAP_LM_AUTH) | |
4343478f | 505 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 506 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 507 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 508 | if (opt & L2CAP_LM_SECURE) |
4343478f | 509 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 510 | |
43bd0f32 AE |
511 | if (opt & L2CAP_LM_MASTER) |
512 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
513 | else | |
514 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
515 | |
516 | if (opt & L2CAP_LM_RELIABLE) | |
517 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
518 | else | |
519 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
520 | break; |
521 | ||
522 | default: | |
523 | err = -ENOPROTOOPT; | |
524 | break; | |
525 | } | |
526 | ||
527 | release_sock(sk); | |
528 | return err; | |
529 | } | |
530 | ||
531 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) | |
532 | { | |
533 | struct sock *sk = sock->sk; | |
4343478f | 534 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 535 | struct bt_security sec; |
14b12d0b | 536 | struct bt_power pwr; |
f1cb9af5 | 537 | struct l2cap_conn *conn; |
33575df7 GP |
538 | int len, err = 0; |
539 | u32 opt; | |
540 | ||
541 | BT_DBG("sk %p", sk); | |
542 | ||
543 | if (level == SOL_L2CAP) | |
544 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
545 | ||
546 | if (level != SOL_BLUETOOTH) | |
547 | return -ENOPROTOOPT; | |
548 | ||
549 | lock_sock(sk); | |
550 | ||
551 | switch (optname) { | |
552 | case BT_SECURITY: | |
715ec005 GP |
553 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
554 | chan->chan_type != L2CAP_CHAN_RAW) { | |
33575df7 GP |
555 | err = -EINVAL; |
556 | break; | |
557 | } | |
558 | ||
559 | sec.level = BT_SECURITY_LOW; | |
560 | ||
561 | len = min_t(unsigned int, sizeof(sec), optlen); | |
562 | if (copy_from_user((char *) &sec, optval, len)) { | |
563 | err = -EFAULT; | |
564 | break; | |
565 | } | |
566 | ||
567 | if (sec.level < BT_SECURITY_LOW || | |
568 | sec.level > BT_SECURITY_HIGH) { | |
569 | err = -EINVAL; | |
570 | break; | |
571 | } | |
572 | ||
4343478f | 573 | chan->sec_level = sec.level; |
f1cb9af5 | 574 | |
0bee1d60 GP |
575 | if (!chan->conn) |
576 | break; | |
577 | ||
f1cb9af5 | 578 | conn = chan->conn; |
0bee1d60 GP |
579 | |
580 | /*change security for LE channels */ | |
581 | if (chan->scid == L2CAP_CID_LE_DATA) { | |
f1cb9af5 VCG |
582 | if (!conn->hcon->out) { |
583 | err = -EINVAL; | |
584 | break; | |
585 | } | |
586 | ||
587 | if (smp_conn_security(conn, sec.level)) | |
588 | break; | |
f1cb9af5 | 589 | sk->sk_state = BT_CONFIG; |
3542b854 | 590 | chan->state = BT_CONFIG; |
0bee1d60 GP |
591 | |
592 | /* or for ACL link, under defer_setup time */ | |
593 | } else if (sk->sk_state == BT_CONNECT2 && | |
594 | bt_sk(sk)->defer_setup) { | |
595 | err = l2cap_chan_check_security(chan); | |
596 | } else { | |
597 | err = -EINVAL; | |
f1cb9af5 | 598 | } |
33575df7 GP |
599 | break; |
600 | ||
601 | case BT_DEFER_SETUP: | |
602 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
603 | err = -EINVAL; | |
604 | break; | |
605 | } | |
606 | ||
607 | if (get_user(opt, (u32 __user *) optval)) { | |
608 | err = -EFAULT; | |
609 | break; | |
610 | } | |
611 | ||
612 | bt_sk(sk)->defer_setup = opt; | |
613 | break; | |
614 | ||
615 | case BT_FLUSHABLE: | |
616 | if (get_user(opt, (u32 __user *) optval)) { | |
617 | err = -EFAULT; | |
618 | break; | |
619 | } | |
620 | ||
621 | if (opt > BT_FLUSHABLE_ON) { | |
622 | err = -EINVAL; | |
623 | break; | |
624 | } | |
625 | ||
626 | if (opt == BT_FLUSHABLE_OFF) { | |
8c1d787b | 627 | struct l2cap_conn *conn = chan->conn; |
25985edc | 628 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
629 | No Flush support in the LM */ |
630 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
631 | err = -EINVAL; | |
632 | break; | |
633 | } | |
634 | } | |
635 | ||
d57b0e8b AE |
636 | if (opt) |
637 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
638 | else | |
639 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
640 | break; |
641 | ||
14b12d0b JG |
642 | case BT_POWER: |
643 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
644 | chan->chan_type != L2CAP_CHAN_RAW) { | |
645 | err = -EINVAL; | |
646 | break; | |
647 | } | |
648 | ||
649 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
650 | ||
651 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
652 | if (copy_from_user((char *) &pwr, optval, len)) { | |
653 | err = -EFAULT; | |
654 | break; | |
655 | } | |
15770b1a AE |
656 | |
657 | if (pwr.force_active) | |
658 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
659 | else | |
660 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
661 | break; |
662 | ||
2ea66482 MM |
663 | case BT_CHANNEL_POLICY: |
664 | if (!enable_hs) { | |
665 | err = -ENOPROTOOPT; | |
666 | break; | |
667 | } | |
668 | ||
669 | if (get_user(opt, (u32 __user *) optval)) { | |
670 | err = -EFAULT; | |
671 | break; | |
672 | } | |
673 | ||
674 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { | |
675 | err = -EINVAL; | |
676 | break; | |
677 | } | |
678 | ||
679 | if (chan->mode != L2CAP_MODE_ERTM && | |
680 | chan->mode != L2CAP_MODE_STREAMING) { | |
681 | err = -EOPNOTSUPP; | |
682 | break; | |
683 | } | |
684 | ||
685 | chan->chan_policy = (u8) opt; | |
14b12d0b JG |
686 | break; |
687 | ||
33575df7 GP |
688 | default: |
689 | err = -ENOPROTOOPT; | |
690 | break; | |
691 | } | |
692 | ||
693 | release_sock(sk); | |
694 | return err; | |
695 | } | |
fd83ccdb GP |
696 | |
697 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len) | |
698 | { | |
699 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 700 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
701 | int err; |
702 | ||
703 | BT_DBG("sock %p, sk %p", sock, sk); | |
704 | ||
705 | err = sock_error(sk); | |
706 | if (err) | |
707 | return err; | |
708 | ||
709 | if (msg->msg_flags & MSG_OOB) | |
710 | return -EOPNOTSUPP; | |
711 | ||
712 | lock_sock(sk); | |
713 | ||
714 | if (sk->sk_state != BT_CONNECTED) { | |
9a91a04a GP |
715 | release_sock(sk); |
716 | return -ENOTCONN; | |
fd83ccdb GP |
717 | } |
718 | ||
5e59b791 | 719 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
fd83ccdb | 720 | |
fd83ccdb GP |
721 | release_sock(sk); |
722 | return err; | |
723 | } | |
33575df7 | 724 | |
68983259 GP |
725 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) |
726 | { | |
727 | struct sock *sk = sock->sk; | |
e328140f MM |
728 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
729 | int err; | |
68983259 GP |
730 | |
731 | lock_sock(sk); | |
732 | ||
733 | if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) { | |
8c1d787b | 734 | sk->sk_state = BT_CONFIG; |
3542b854 | 735 | pi->chan->state = BT_CONFIG; |
8c1d787b | 736 | |
e328140f | 737 | __l2cap_connect_rsp_defer(pi->chan); |
68983259 GP |
738 | release_sock(sk); |
739 | return 0; | |
740 | } | |
741 | ||
742 | release_sock(sk); | |
743 | ||
744 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
745 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
746 | else | |
747 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
748 | ||
749 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
750 | return err; | |
751 | ||
752 | /* Attempt to put pending rx data in the socket buffer */ | |
753 | ||
754 | lock_sock(sk); | |
755 | ||
756 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
757 | goto done; | |
758 | ||
759 | if (pi->rx_busy_skb) { | |
760 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
761 | pi->rx_busy_skb = NULL; | |
762 | else | |
763 | goto done; | |
764 | } | |
765 | ||
766 | /* Restore data flow when half of the receive buffer is | |
767 | * available. This avoids resending large numbers of | |
768 | * frames. | |
769 | */ | |
770 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
771 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 772 | |
e328140f MM |
773 | done: |
774 | release_sock(sk); | |
775 | return err; | |
68983259 GP |
776 | } |
777 | ||
05fc1576 GP |
778 | /* Kill socket (only if zapped and orphan) |
779 | * Must be called on unlocked socket. | |
780 | */ | |
ba3bd0ee | 781 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
782 | { |
783 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
784 | return; | |
785 | ||
786 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
787 | ||
788 | /* Kill poor orphan */ | |
6ff5abbf | 789 | |
23691d75 | 790 | l2cap_chan_destroy(l2cap_pi(sk)->chan); |
05fc1576 GP |
791 | sock_set_flag(sk, SOCK_DEAD); |
792 | sock_put(sk); | |
793 | } | |
794 | ||
dcba0dba GP |
795 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
796 | { | |
797 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 798 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
dcba0dba GP |
799 | int err = 0; |
800 | ||
801 | BT_DBG("sock %p, sk %p", sock, sk); | |
802 | ||
803 | if (!sk) | |
804 | return 0; | |
805 | ||
806 | lock_sock(sk); | |
807 | if (!sk->sk_shutdown) { | |
0c1bc5c6 | 808 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
809 | err = __l2cap_wait_ack(sk); |
810 | ||
811 | sk->sk_shutdown = SHUTDOWN_MASK; | |
0f852724 | 812 | l2cap_chan_close(chan, 0); |
dcba0dba GP |
813 | |
814 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
815 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
816 | sk->sk_lingertime); | |
817 | } | |
818 | ||
819 | if (!err && sk->sk_err) | |
820 | err = -sk->sk_err; | |
821 | ||
822 | release_sock(sk); | |
823 | return err; | |
824 | } | |
825 | ||
554f05bb GP |
826 | static int l2cap_sock_release(struct socket *sock) |
827 | { | |
828 | struct sock *sk = sock->sk; | |
829 | int err; | |
830 | ||
831 | BT_DBG("sock %p, sk %p", sock, sk); | |
832 | ||
833 | if (!sk) | |
834 | return 0; | |
835 | ||
836 | err = l2cap_sock_shutdown(sock, 2); | |
837 | ||
838 | sock_orphan(sk); | |
839 | l2cap_sock_kill(sk); | |
840 | return err; | |
841 | } | |
842 | ||
80808e43 GP |
843 | static struct l2cap_chan *l2cap_sock_new_connection_cb(void *data) |
844 | { | |
845 | struct sock *sk, *parent = data; | |
846 | ||
847 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, | |
848 | GFP_ATOMIC); | |
849 | if (!sk) | |
850 | return NULL; | |
851 | ||
b5a30dda OP |
852 | bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); |
853 | ||
80808e43 GP |
854 | l2cap_sock_init(sk, parent); |
855 | ||
856 | return l2cap_pi(sk)->chan; | |
857 | } | |
858 | ||
23070494 GP |
859 | static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb) |
860 | { | |
e328140f | 861 | int err; |
23070494 | 862 | struct sock *sk = data; |
e328140f MM |
863 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
864 | ||
865 | if (pi->rx_busy_skb) | |
866 | return -ENOMEM; | |
867 | ||
868 | err = sock_queue_rcv_skb(sk, skb); | |
869 | ||
870 | /* For ERTM, handle one skb that doesn't fit into the recv | |
871 | * buffer. This is important to do because the data frames | |
872 | * have already been acked, so the skb cannot be discarded. | |
873 | * | |
874 | * Notify the l2cap core that the buffer is full, so the | |
875 | * LOCAL_BUSY state is entered and no more frames are | |
876 | * acked and reassembled until there is buffer space | |
877 | * available. | |
878 | */ | |
879 | if (err < 0 && pi->chan->mode == L2CAP_MODE_ERTM) { | |
880 | pi->rx_busy_skb = skb; | |
881 | l2cap_chan_busy(pi->chan, 1); | |
882 | err = 0; | |
883 | } | |
23070494 | 884 | |
e328140f | 885 | return err; |
23070494 GP |
886 | } |
887 | ||
ba3bd0ee GP |
888 | static void l2cap_sock_close_cb(void *data) |
889 | { | |
890 | struct sock *sk = data; | |
891 | ||
892 | l2cap_sock_kill(sk); | |
893 | } | |
894 | ||
89bc500e GP |
895 | static void l2cap_sock_state_change_cb(void *data, int state) |
896 | { | |
897 | struct sock *sk = data; | |
898 | ||
899 | sk->sk_state = state; | |
900 | } | |
901 | ||
80808e43 GP |
902 | static struct l2cap_ops l2cap_chan_ops = { |
903 | .name = "L2CAP Socket Interface", | |
904 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 905 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 906 | .close = l2cap_sock_close_cb, |
89bc500e | 907 | .state_change = l2cap_sock_state_change_cb, |
80808e43 GP |
908 | }; |
909 | ||
bb58f747 GP |
910 | static void l2cap_sock_destruct(struct sock *sk) |
911 | { | |
912 | BT_DBG("sk %p", sk); | |
913 | ||
e328140f MM |
914 | if (l2cap_pi(sk)->rx_busy_skb) { |
915 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
916 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
917 | } | |
918 | ||
bb58f747 GP |
919 | skb_queue_purge(&sk->sk_receive_queue); |
920 | skb_queue_purge(&sk->sk_write_queue); | |
921 | } | |
922 | ||
80808e43 | 923 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 GP |
924 | { |
925 | struct l2cap_pinfo *pi = l2cap_pi(sk); | |
b4450035 | 926 | struct l2cap_chan *chan = pi->chan; |
bb58f747 GP |
927 | |
928 | BT_DBG("sk %p", sk); | |
929 | ||
930 | if (parent) { | |
b4450035 GP |
931 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
932 | ||
bb58f747 GP |
933 | sk->sk_type = parent->sk_type; |
934 | bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup; | |
935 | ||
715ec005 | 936 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
937 | chan->imtu = pchan->imtu; |
938 | chan->omtu = pchan->omtu; | |
b4450035 | 939 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 940 | chan->mode = pchan->mode; |
47d1ec61 GP |
941 | chan->fcs = pchan->fcs; |
942 | chan->max_tx = pchan->max_tx; | |
943 | chan->tx_win = pchan->tx_win; | |
6b3c7104 | 944 | chan->tx_win_max = pchan->tx_win_max; |
4343478f | 945 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 946 | chan->flags = pchan->flags; |
6230c9b4 PM |
947 | |
948 | security_sk_clone(parent, sk); | |
bb58f747 | 949 | } else { |
715ec005 GP |
950 | |
951 | switch (sk->sk_type) { | |
952 | case SOCK_RAW: | |
953 | chan->chan_type = L2CAP_CHAN_RAW; | |
954 | break; | |
955 | case SOCK_DGRAM: | |
956 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
957 | break; | |
958 | case SOCK_SEQPACKET: | |
959 | case SOCK_STREAM: | |
960 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
961 | break; | |
962 | } | |
963 | ||
0c1bc5c6 GP |
964 | chan->imtu = L2CAP_DEFAULT_MTU; |
965 | chan->omtu = 0; | |
bb58f747 | 966 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 967 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 968 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 969 | } else { |
0c1bc5c6 | 970 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 971 | } |
47d1ec61 GP |
972 | chan->max_tx = L2CAP_DEFAULT_MAX_TX; |
973 | chan->fcs = L2CAP_FCS_CRC16; | |
974 | chan->tx_win = L2CAP_DEFAULT_TX_WINDOW; | |
6b3c7104 | 975 | chan->tx_win_max = L2CAP_DEFAULT_TX_WINDOW; |
4343478f | 976 | chan->sec_level = BT_SECURITY_LOW; |
d57b0e8b | 977 | chan->flags = 0; |
15770b1a | 978 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
bb58f747 GP |
979 | } |
980 | ||
981 | /* Default config options */ | |
0c1bc5c6 | 982 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
983 | |
984 | chan->data = sk; | |
985 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
986 | } |
987 | ||
988 | static struct proto l2cap_proto = { | |
989 | .name = "L2CAP", | |
990 | .owner = THIS_MODULE, | |
991 | .obj_size = sizeof(struct l2cap_pinfo) | |
992 | }; | |
993 | ||
80808e43 | 994 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
bb58f747 GP |
995 | { |
996 | struct sock *sk; | |
dc50a06d | 997 | struct l2cap_chan *chan; |
bb58f747 GP |
998 | |
999 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
1000 | if (!sk) | |
1001 | return NULL; | |
1002 | ||
1003 | sock_init_data(sock, sk); | |
1004 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1005 | ||
1006 | sk->sk_destruct = l2cap_sock_destruct; | |
a6375255 | 1007 | sk->sk_sndtimeo = msecs_to_jiffies(L2CAP_CONN_TIMEOUT); |
bb58f747 GP |
1008 | |
1009 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1010 | ||
1011 | sk->sk_protocol = proto; | |
1012 | sk->sk_state = BT_OPEN; | |
1013 | ||
dc50a06d GP |
1014 | chan = l2cap_chan_create(sk); |
1015 | if (!chan) { | |
1016 | l2cap_sock_kill(sk); | |
1017 | return NULL; | |
1018 | } | |
1019 | ||
1020 | l2cap_pi(sk)->chan = chan; | |
1021 | ||
bb58f747 GP |
1022 | return sk; |
1023 | } | |
1024 | ||
1025 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1026 | int kern) | |
1027 | { | |
1028 | struct sock *sk; | |
1029 | ||
1030 | BT_DBG("sock %p", sock); | |
1031 | ||
1032 | sock->state = SS_UNCONNECTED; | |
1033 | ||
1034 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
1035 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) | |
1036 | return -ESOCKTNOSUPPORT; | |
1037 | ||
1038 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1039 | return -EPERM; | |
1040 | ||
1041 | sock->ops = &l2cap_sock_ops; | |
1042 | ||
1043 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1044 | if (!sk) | |
1045 | return -ENOMEM; | |
1046 | ||
1047 | l2cap_sock_init(sk, NULL); | |
1048 | return 0; | |
1049 | } | |
1050 | ||
cf2f90f5 | 1051 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1052 | .family = PF_BLUETOOTH, |
1053 | .owner = THIS_MODULE, | |
1054 | .release = l2cap_sock_release, | |
1055 | .bind = l2cap_sock_bind, | |
1056 | .connect = l2cap_sock_connect, | |
1057 | .listen = l2cap_sock_listen, | |
1058 | .accept = l2cap_sock_accept, | |
1059 | .getname = l2cap_sock_getname, | |
1060 | .sendmsg = l2cap_sock_sendmsg, | |
1061 | .recvmsg = l2cap_sock_recvmsg, | |
1062 | .poll = bt_sock_poll, | |
1063 | .ioctl = bt_sock_ioctl, | |
1064 | .mmap = sock_no_mmap, | |
1065 | .socketpair = sock_no_socketpair, | |
1066 | .shutdown = l2cap_sock_shutdown, | |
1067 | .setsockopt = l2cap_sock_setsockopt, | |
1068 | .getsockopt = l2cap_sock_getsockopt | |
1069 | }; | |
1070 | ||
bb58f747 GP |
1071 | static const struct net_proto_family l2cap_sock_family_ops = { |
1072 | .family = PF_BLUETOOTH, | |
1073 | .owner = THIS_MODULE, | |
1074 | .create = l2cap_sock_create, | |
1075 | }; | |
1076 | ||
1077 | int __init l2cap_init_sockets(void) | |
1078 | { | |
e2174ca4 | 1079 | int err; |
bb58f747 | 1080 | |
e2174ca4 GP |
1081 | err = proto_register(&l2cap_proto, 0); |
1082 | if (err < 0) | |
1083 | return err; | |
bb58f747 | 1084 | |
e2174ca4 GP |
1085 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
1086 | if (err < 0) | |
1087 | goto error; | |
bb58f747 | 1088 | |
e2174ca4 | 1089 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1090 | |
e2174ca4 | 1091 | return 0; |
bb58f747 GP |
1092 | |
1093 | error: | |
e2174ca4 GP |
1094 | BT_ERR("L2CAP socket registration failed"); |
1095 | proto_unregister(&l2cap_proto); | |
1096 | return err; | |
bb58f747 GP |
1097 | } |
1098 | ||
1099 | void l2cap_cleanup_sockets(void) | |
1100 | { | |
e2174ca4 GP |
1101 | if (bt_sock_unregister(BTPROTO_L2CAP) < 0) |
1102 | BT_ERR("L2CAP socket unregistration failed"); | |
bb58f747 | 1103 | |
e2174ca4 | 1104 | proto_unregister(&l2cap_proto); |
bb58f747 | 1105 | } |