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 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 | ||
124 | lock_sock(sk); | |
125 | ||
715ec005 | 126 | if (chan->chan_type == L2CAP_CHAN_CONN_ORIENTED |
acd7d370 | 127 | && !(la.l2_psm || la.l2_cid)) { |
4e34c50b GP |
128 | err = -EINVAL; |
129 | goto done; | |
130 | } | |
131 | ||
0c1bc5c6 | 132 | switch (chan->mode) { |
4e34c50b GP |
133 | case L2CAP_MODE_BASIC: |
134 | break; | |
135 | case L2CAP_MODE_ERTM: | |
136 | case L2CAP_MODE_STREAMING: | |
137 | if (!disable_ertm) | |
138 | break; | |
139 | /* fall through */ | |
140 | default: | |
141 | err = -ENOTSUPP; | |
142 | goto done; | |
143 | } | |
144 | ||
145 | switch (sk->sk_state) { | |
146 | case BT_CONNECT: | |
147 | case BT_CONNECT2: | |
148 | case BT_CONFIG: | |
149 | /* Already connecting */ | |
150 | goto wait; | |
151 | ||
152 | case BT_CONNECTED: | |
153 | /* Already connected */ | |
154 | err = -EISCONN; | |
155 | goto done; | |
156 | ||
157 | case BT_OPEN: | |
158 | case BT_BOUND: | |
159 | /* Can connect */ | |
160 | break; | |
161 | ||
162 | default: | |
163 | err = -EBADFD; | |
164 | goto done; | |
165 | } | |
166 | ||
167 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
715ec005 GP |
168 | if ((__le16_to_cpu(la.l2_psm) & 0x0101) != 0x0001 && !la.l2_cid && |
169 | chan->chan_type != L2CAP_CHAN_RAW) { | |
4e34c50b GP |
170 | err = -EINVAL; |
171 | goto done; | |
172 | } | |
173 | ||
174 | /* Set destination address and psm */ | |
175 | bacpy(&bt_sk(sk)->dst, &la.l2_bdaddr); | |
fe4128e0 GP |
176 | chan->psm = la.l2_psm; |
177 | chan->dcid = la.l2_cid; | |
4e34c50b | 178 | |
77a74c7e | 179 | err = l2cap_chan_connect(l2cap_pi(sk)->chan); |
4e34c50b GP |
180 | if (err) |
181 | goto done; | |
182 | ||
183 | wait: | |
184 | err = bt_sock_wait_state(sk, BT_CONNECTED, | |
185 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
186 | done: | |
187 | release_sock(sk); | |
188 | return err; | |
189 | } | |
190 | ||
af6bcd82 GP |
191 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
192 | { | |
193 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 194 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
195 | int err = 0; |
196 | ||
197 | BT_DBG("sk %p backlog %d", sk, backlog); | |
198 | ||
199 | lock_sock(sk); | |
200 | ||
201 | if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) | |
202 | || sk->sk_state != BT_BOUND) { | |
203 | err = -EBADFD; | |
204 | goto done; | |
205 | } | |
206 | ||
0c1bc5c6 | 207 | switch (chan->mode) { |
af6bcd82 GP |
208 | case L2CAP_MODE_BASIC: |
209 | break; | |
210 | case L2CAP_MODE_ERTM: | |
211 | case L2CAP_MODE_STREAMING: | |
212 | if (!disable_ertm) | |
213 | break; | |
214 | /* fall through */ | |
215 | default: | |
216 | err = -ENOTSUPP; | |
217 | goto done; | |
218 | } | |
219 | ||
af6bcd82 GP |
220 | sk->sk_max_ack_backlog = backlog; |
221 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
222 | |
223 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
224 | sk->sk_state = BT_LISTEN; |
225 | ||
226 | done: | |
227 | release_sock(sk); | |
228 | return err; | |
229 | } | |
230 | ||
c47b7c72 GP |
231 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags) |
232 | { | |
233 | DECLARE_WAITQUEUE(wait, current); | |
234 | struct sock *sk = sock->sk, *nsk; | |
235 | long timeo; | |
236 | int err = 0; | |
237 | ||
238 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
239 | ||
c47b7c72 GP |
240 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
241 | ||
242 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
243 | ||
244 | /* Wait for an incoming connection. (wake-one). */ | |
245 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 246 | while (1) { |
c47b7c72 | 247 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
248 | |
249 | if (sk->sk_state != BT_LISTEN) { | |
250 | err = -EBADFD; | |
c47b7c72 GP |
251 | break; |
252 | } | |
253 | ||
f9a3c20a PH |
254 | nsk = bt_accept_dequeue(sk, newsock); |
255 | if (nsk) | |
256 | break; | |
c47b7c72 | 257 | |
f9a3c20a PH |
258 | if (!timeo) { |
259 | err = -EAGAIN; | |
c47b7c72 GP |
260 | break; |
261 | } | |
262 | ||
263 | if (signal_pending(current)) { | |
264 | err = sock_intr_errno(timeo); | |
265 | break; | |
266 | } | |
f9a3c20a PH |
267 | |
268 | release_sock(sk); | |
269 | timeo = schedule_timeout(timeo); | |
270 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 271 | } |
f9a3c20a | 272 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
273 | remove_wait_queue(sk_sleep(sk), &wait); |
274 | ||
275 | if (err) | |
276 | goto done; | |
277 | ||
278 | newsock->state = SS_CONNECTED; | |
279 | ||
280 | BT_DBG("new socket %p", nsk); | |
281 | ||
282 | done: | |
283 | release_sock(sk); | |
284 | return err; | |
285 | } | |
286 | ||
d7175d55 GP |
287 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) |
288 | { | |
289 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
290 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 291 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
292 | |
293 | BT_DBG("sock %p, sk %p", sock, sk); | |
294 | ||
295 | addr->sa_family = AF_BLUETOOTH; | |
296 | *len = sizeof(struct sockaddr_l2); | |
297 | ||
298 | if (peer) { | |
fe4128e0 | 299 | la->l2_psm = chan->psm; |
d7175d55 | 300 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst); |
fe4128e0 | 301 | la->l2_cid = cpu_to_le16(chan->dcid); |
d7175d55 | 302 | } else { |
0c1bc5c6 | 303 | la->l2_psm = chan->sport; |
d7175d55 | 304 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->src); |
fe4128e0 | 305 | la->l2_cid = cpu_to_le16(chan->scid); |
d7175d55 GP |
306 | } |
307 | ||
308 | return 0; | |
309 | } | |
310 | ||
99f4808d GP |
311 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
312 | { | |
313 | struct sock *sk = sock->sk; | |
4343478f | 314 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
315 | struct l2cap_options opts; |
316 | struct l2cap_conninfo cinfo; | |
317 | int len, err = 0; | |
318 | u32 opt; | |
319 | ||
320 | BT_DBG("sk %p", sk); | |
321 | ||
322 | if (get_user(len, optlen)) | |
323 | return -EFAULT; | |
324 | ||
325 | lock_sock(sk); | |
326 | ||
327 | switch (optname) { | |
328 | case L2CAP_OPTIONS: | |
e3fb592b | 329 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
330 | opts.imtu = chan->imtu; |
331 | opts.omtu = chan->omtu; | |
332 | opts.flush_to = chan->flush_to; | |
333 | opts.mode = chan->mode; | |
47d1ec61 GP |
334 | opts.fcs = chan->fcs; |
335 | opts.max_tx = chan->max_tx; | |
6327eb98 | 336 | opts.txwin_size = chan->tx_win; |
99f4808d GP |
337 | |
338 | len = min_t(unsigned int, len, sizeof(opts)); | |
339 | if (copy_to_user(optval, (char *) &opts, len)) | |
340 | err = -EFAULT; | |
341 | ||
342 | break; | |
343 | ||
344 | case L2CAP_LM: | |
4343478f | 345 | switch (chan->sec_level) { |
99f4808d GP |
346 | case BT_SECURITY_LOW: |
347 | opt = L2CAP_LM_AUTH; | |
348 | break; | |
349 | case BT_SECURITY_MEDIUM: | |
350 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
351 | break; | |
352 | case BT_SECURITY_HIGH: | |
353 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
354 | L2CAP_LM_SECURE; | |
355 | break; | |
356 | default: | |
357 | opt = 0; | |
358 | break; | |
359 | } | |
360 | ||
43bd0f32 | 361 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
362 | opt |= L2CAP_LM_MASTER; |
363 | ||
ecf61bdb | 364 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
365 | opt |= L2CAP_LM_RELIABLE; |
366 | ||
367 | if (put_user(opt, (u32 __user *) optval)) | |
368 | err = -EFAULT; | |
369 | break; | |
370 | ||
371 | case L2CAP_CONNINFO: | |
372 | if (sk->sk_state != BT_CONNECTED && | |
373 | !(sk->sk_state == BT_CONNECT2 && | |
374 | bt_sk(sk)->defer_setup)) { | |
375 | err = -ENOTCONN; | |
376 | break; | |
377 | } | |
378 | ||
8d03e971 | 379 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
380 | cinfo.hci_handle = chan->conn->hcon->handle; |
381 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
382 | |
383 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
384 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
385 | err = -EFAULT; | |
386 | ||
387 | break; | |
388 | ||
389 | default: | |
390 | err = -ENOPROTOOPT; | |
391 | break; | |
392 | } | |
393 | ||
394 | release_sock(sk); | |
395 | return err; | |
396 | } | |
397 | ||
398 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
399 | { | |
400 | struct sock *sk = sock->sk; | |
4343478f | 401 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 402 | struct bt_security sec; |
14b12d0b | 403 | struct bt_power pwr; |
99f4808d GP |
404 | int len, err = 0; |
405 | ||
406 | BT_DBG("sk %p", sk); | |
407 | ||
408 | if (level == SOL_L2CAP) | |
409 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
410 | ||
411 | if (level != SOL_BLUETOOTH) | |
412 | return -ENOPROTOOPT; | |
413 | ||
414 | if (get_user(len, optlen)) | |
415 | return -EFAULT; | |
416 | ||
417 | lock_sock(sk); | |
418 | ||
419 | switch (optname) { | |
420 | case BT_SECURITY: | |
715ec005 GP |
421 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
422 | chan->chan_type != L2CAP_CHAN_RAW) { | |
99f4808d GP |
423 | err = -EINVAL; |
424 | break; | |
425 | } | |
426 | ||
8f360119 | 427 | memset(&sec, 0, sizeof(sec)); |
4343478f | 428 | sec.level = chan->sec_level; |
99f4808d | 429 | |
8f360119 VCG |
430 | if (sk->sk_state == BT_CONNECTED) |
431 | sec.key_size = chan->conn->hcon->enc_key_size; | |
432 | ||
99f4808d GP |
433 | len = min_t(unsigned int, len, sizeof(sec)); |
434 | if (copy_to_user(optval, (char *) &sec, len)) | |
435 | err = -EFAULT; | |
436 | ||
437 | break; | |
438 | ||
439 | case BT_DEFER_SETUP: | |
440 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
441 | err = -EINVAL; | |
442 | break; | |
443 | } | |
444 | ||
445 | if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval)) | |
446 | err = -EFAULT; | |
447 | ||
448 | break; | |
449 | ||
450 | case BT_FLUSHABLE: | |
d57b0e8b AE |
451 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
452 | (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 | ||
15770b1a | 464 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
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 | ||
2ea66482 MM |
472 | case BT_CHANNEL_POLICY: |
473 | if (!enable_hs) { | |
474 | err = -ENOPROTOOPT; | |
475 | break; | |
476 | } | |
477 | ||
478 | if (put_user(chan->chan_policy, (u32 __user *) optval)) | |
479 | err = -EFAULT; | |
480 | break; | |
481 | ||
99f4808d GP |
482 | default: |
483 | err = -ENOPROTOOPT; | |
484 | break; | |
485 | } | |
486 | ||
487 | release_sock(sk); | |
488 | return err; | |
489 | } | |
490 | ||
33575df7 GP |
491 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
492 | { | |
493 | struct sock *sk = sock->sk; | |
b4450035 | 494 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
495 | struct l2cap_options opts; |
496 | int len, err = 0; | |
497 | u32 opt; | |
498 | ||
499 | BT_DBG("sk %p", sk); | |
500 | ||
501 | lock_sock(sk); | |
502 | ||
503 | switch (optname) { | |
504 | case L2CAP_OPTIONS: | |
505 | if (sk->sk_state == BT_CONNECTED) { | |
506 | err = -EINVAL; | |
507 | break; | |
508 | } | |
509 | ||
0c1bc5c6 GP |
510 | opts.imtu = chan->imtu; |
511 | opts.omtu = chan->omtu; | |
512 | opts.flush_to = chan->flush_to; | |
513 | opts.mode = chan->mode; | |
47d1ec61 GP |
514 | opts.fcs = chan->fcs; |
515 | opts.max_tx = chan->max_tx; | |
6327eb98 | 516 | opts.txwin_size = chan->tx_win; |
33575df7 GP |
517 | |
518 | len = min_t(unsigned int, sizeof(opts), optlen); | |
519 | if (copy_from_user((char *) &opts, optval, len)) { | |
520 | err = -EFAULT; | |
521 | break; | |
522 | } | |
523 | ||
6327eb98 | 524 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
33575df7 GP |
525 | err = -EINVAL; |
526 | break; | |
527 | } | |
528 | ||
0c1bc5c6 GP |
529 | chan->mode = opts.mode; |
530 | switch (chan->mode) { | |
33575df7 | 531 | case L2CAP_MODE_BASIC: |
c1360a1c | 532 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
533 | break; |
534 | case L2CAP_MODE_ERTM: | |
535 | case L2CAP_MODE_STREAMING: | |
536 | if (!disable_ertm) | |
537 | break; | |
538 | /* fall through */ | |
539 | default: | |
540 | err = -EINVAL; | |
541 | break; | |
542 | } | |
543 | ||
0c1bc5c6 GP |
544 | chan->imtu = opts.imtu; |
545 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
546 | chan->fcs = opts.fcs; |
547 | chan->max_tx = opts.max_tx; | |
6327eb98 | 548 | chan->tx_win = opts.txwin_size; |
33575df7 GP |
549 | break; |
550 | ||
551 | case L2CAP_LM: | |
552 | if (get_user(opt, (u32 __user *) optval)) { | |
553 | err = -EFAULT; | |
554 | break; | |
555 | } | |
556 | ||
557 | if (opt & L2CAP_LM_AUTH) | |
4343478f | 558 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 559 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 560 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 561 | if (opt & L2CAP_LM_SECURE) |
4343478f | 562 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 563 | |
43bd0f32 AE |
564 | if (opt & L2CAP_LM_MASTER) |
565 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
566 | else | |
567 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
568 | |
569 | if (opt & L2CAP_LM_RELIABLE) | |
570 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
571 | else | |
572 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
573 | break; |
574 | ||
575 | default: | |
576 | err = -ENOPROTOOPT; | |
577 | break; | |
578 | } | |
579 | ||
580 | release_sock(sk); | |
581 | return err; | |
582 | } | |
583 | ||
584 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) | |
585 | { | |
586 | struct sock *sk = sock->sk; | |
4343478f | 587 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 588 | struct bt_security sec; |
14b12d0b | 589 | struct bt_power pwr; |
f1cb9af5 | 590 | struct l2cap_conn *conn; |
33575df7 GP |
591 | int len, err = 0; |
592 | u32 opt; | |
593 | ||
594 | BT_DBG("sk %p", sk); | |
595 | ||
596 | if (level == SOL_L2CAP) | |
597 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
598 | ||
599 | if (level != SOL_BLUETOOTH) | |
600 | return -ENOPROTOOPT; | |
601 | ||
602 | lock_sock(sk); | |
603 | ||
604 | switch (optname) { | |
605 | case BT_SECURITY: | |
715ec005 GP |
606 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
607 | chan->chan_type != L2CAP_CHAN_RAW) { | |
33575df7 GP |
608 | err = -EINVAL; |
609 | break; | |
610 | } | |
611 | ||
612 | sec.level = BT_SECURITY_LOW; | |
613 | ||
614 | len = min_t(unsigned int, sizeof(sec), optlen); | |
615 | if (copy_from_user((char *) &sec, optval, len)) { | |
616 | err = -EFAULT; | |
617 | break; | |
618 | } | |
619 | ||
620 | if (sec.level < BT_SECURITY_LOW || | |
621 | sec.level > BT_SECURITY_HIGH) { | |
622 | err = -EINVAL; | |
623 | break; | |
624 | } | |
625 | ||
4343478f | 626 | chan->sec_level = sec.level; |
f1cb9af5 VCG |
627 | |
628 | conn = chan->conn; | |
629 | if (conn && chan->scid == L2CAP_CID_LE_DATA) { | |
630 | if (!conn->hcon->out) { | |
631 | err = -EINVAL; | |
632 | break; | |
633 | } | |
634 | ||
635 | if (smp_conn_security(conn, sec.level)) | |
636 | break; | |
637 | ||
638 | err = 0; | |
639 | sk->sk_state = BT_CONFIG; | |
640 | } | |
33575df7 GP |
641 | break; |
642 | ||
643 | case BT_DEFER_SETUP: | |
644 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
645 | err = -EINVAL; | |
646 | break; | |
647 | } | |
648 | ||
649 | if (get_user(opt, (u32 __user *) optval)) { | |
650 | err = -EFAULT; | |
651 | break; | |
652 | } | |
653 | ||
654 | bt_sk(sk)->defer_setup = opt; | |
655 | break; | |
656 | ||
657 | case BT_FLUSHABLE: | |
658 | if (get_user(opt, (u32 __user *) optval)) { | |
659 | err = -EFAULT; | |
660 | break; | |
661 | } | |
662 | ||
663 | if (opt > BT_FLUSHABLE_ON) { | |
664 | err = -EINVAL; | |
665 | break; | |
666 | } | |
667 | ||
668 | if (opt == BT_FLUSHABLE_OFF) { | |
8c1d787b | 669 | struct l2cap_conn *conn = chan->conn; |
25985edc | 670 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
671 | No Flush support in the LM */ |
672 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
673 | err = -EINVAL; | |
674 | break; | |
675 | } | |
676 | } | |
677 | ||
d57b0e8b AE |
678 | if (opt) |
679 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
680 | else | |
681 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
682 | break; |
683 | ||
14b12d0b JG |
684 | case BT_POWER: |
685 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
686 | chan->chan_type != L2CAP_CHAN_RAW) { | |
687 | err = -EINVAL; | |
688 | break; | |
689 | } | |
690 | ||
691 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
692 | ||
693 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
694 | if (copy_from_user((char *) &pwr, optval, len)) { | |
695 | err = -EFAULT; | |
696 | break; | |
697 | } | |
15770b1a AE |
698 | |
699 | if (pwr.force_active) | |
700 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
701 | else | |
702 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
703 | break; |
704 | ||
2ea66482 MM |
705 | case BT_CHANNEL_POLICY: |
706 | if (!enable_hs) { | |
707 | err = -ENOPROTOOPT; | |
708 | break; | |
709 | } | |
710 | ||
711 | if (get_user(opt, (u32 __user *) optval)) { | |
712 | err = -EFAULT; | |
713 | break; | |
714 | } | |
715 | ||
716 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { | |
717 | err = -EINVAL; | |
718 | break; | |
719 | } | |
720 | ||
721 | if (chan->mode != L2CAP_MODE_ERTM && | |
722 | chan->mode != L2CAP_MODE_STREAMING) { | |
723 | err = -EOPNOTSUPP; | |
724 | break; | |
725 | } | |
726 | ||
727 | chan->chan_policy = (u8) opt; | |
14b12d0b JG |
728 | break; |
729 | ||
33575df7 GP |
730 | default: |
731 | err = -ENOPROTOOPT; | |
732 | break; | |
733 | } | |
734 | ||
735 | release_sock(sk); | |
736 | return err; | |
737 | } | |
fd83ccdb GP |
738 | |
739 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len) | |
740 | { | |
741 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 742 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
743 | int err; |
744 | ||
745 | BT_DBG("sock %p, sk %p", sock, sk); | |
746 | ||
747 | err = sock_error(sk); | |
748 | if (err) | |
749 | return err; | |
750 | ||
751 | if (msg->msg_flags & MSG_OOB) | |
752 | return -EOPNOTSUPP; | |
753 | ||
754 | lock_sock(sk); | |
755 | ||
756 | if (sk->sk_state != BT_CONNECTED) { | |
9a91a04a GP |
757 | release_sock(sk); |
758 | return -ENOTCONN; | |
fd83ccdb GP |
759 | } |
760 | ||
5e59b791 | 761 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
fd83ccdb | 762 | |
fd83ccdb GP |
763 | release_sock(sk); |
764 | return err; | |
765 | } | |
33575df7 | 766 | |
68983259 GP |
767 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) |
768 | { | |
769 | struct sock *sk = sock->sk; | |
e328140f MM |
770 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
771 | int err; | |
68983259 GP |
772 | |
773 | lock_sock(sk); | |
774 | ||
775 | if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) { | |
8c1d787b GP |
776 | sk->sk_state = BT_CONFIG; |
777 | ||
e328140f | 778 | __l2cap_connect_rsp_defer(pi->chan); |
68983259 GP |
779 | release_sock(sk); |
780 | return 0; | |
781 | } | |
782 | ||
783 | release_sock(sk); | |
784 | ||
785 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
786 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
787 | else | |
788 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
789 | ||
790 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
791 | return err; | |
792 | ||
793 | /* Attempt to put pending rx data in the socket buffer */ | |
794 | ||
795 | lock_sock(sk); | |
796 | ||
797 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
798 | goto done; | |
799 | ||
800 | if (pi->rx_busy_skb) { | |
801 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
802 | pi->rx_busy_skb = NULL; | |
803 | else | |
804 | goto done; | |
805 | } | |
806 | ||
807 | /* Restore data flow when half of the receive buffer is | |
808 | * available. This avoids resending large numbers of | |
809 | * frames. | |
810 | */ | |
811 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
812 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 813 | |
e328140f MM |
814 | done: |
815 | release_sock(sk); | |
816 | return err; | |
68983259 GP |
817 | } |
818 | ||
05fc1576 GP |
819 | /* Kill socket (only if zapped and orphan) |
820 | * Must be called on unlocked socket. | |
821 | */ | |
ba3bd0ee | 822 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
823 | { |
824 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
825 | return; | |
826 | ||
827 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
828 | ||
829 | /* Kill poor orphan */ | |
6ff5abbf | 830 | |
23691d75 | 831 | l2cap_chan_destroy(l2cap_pi(sk)->chan); |
05fc1576 GP |
832 | sock_set_flag(sk, SOCK_DEAD); |
833 | sock_put(sk); | |
834 | } | |
835 | ||
dcba0dba GP |
836 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
837 | { | |
838 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 839 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
dcba0dba GP |
840 | int err = 0; |
841 | ||
842 | BT_DBG("sock %p, sk %p", sock, sk); | |
843 | ||
844 | if (!sk) | |
845 | return 0; | |
846 | ||
847 | lock_sock(sk); | |
848 | if (!sk->sk_shutdown) { | |
0c1bc5c6 | 849 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
850 | err = __l2cap_wait_ack(sk); |
851 | ||
852 | sk->sk_shutdown = SHUTDOWN_MASK; | |
0f852724 | 853 | l2cap_chan_close(chan, 0); |
dcba0dba GP |
854 | |
855 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
856 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
857 | sk->sk_lingertime); | |
858 | } | |
859 | ||
860 | if (!err && sk->sk_err) | |
861 | err = -sk->sk_err; | |
862 | ||
863 | release_sock(sk); | |
864 | return err; | |
865 | } | |
866 | ||
554f05bb GP |
867 | static int l2cap_sock_release(struct socket *sock) |
868 | { | |
869 | struct sock *sk = sock->sk; | |
870 | int err; | |
871 | ||
872 | BT_DBG("sock %p, sk %p", sock, sk); | |
873 | ||
874 | if (!sk) | |
875 | return 0; | |
876 | ||
877 | err = l2cap_sock_shutdown(sock, 2); | |
878 | ||
879 | sock_orphan(sk); | |
880 | l2cap_sock_kill(sk); | |
881 | return err; | |
882 | } | |
883 | ||
80808e43 GP |
884 | static struct l2cap_chan *l2cap_sock_new_connection_cb(void *data) |
885 | { | |
886 | struct sock *sk, *parent = data; | |
887 | ||
888 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, | |
889 | GFP_ATOMIC); | |
890 | if (!sk) | |
891 | return NULL; | |
892 | ||
893 | l2cap_sock_init(sk, parent); | |
894 | ||
895 | return l2cap_pi(sk)->chan; | |
896 | } | |
897 | ||
23070494 GP |
898 | static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb) |
899 | { | |
e328140f | 900 | int err; |
23070494 | 901 | struct sock *sk = data; |
e328140f MM |
902 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
903 | ||
904 | if (pi->rx_busy_skb) | |
905 | return -ENOMEM; | |
906 | ||
907 | err = sock_queue_rcv_skb(sk, skb); | |
908 | ||
909 | /* For ERTM, handle one skb that doesn't fit into the recv | |
910 | * buffer. This is important to do because the data frames | |
911 | * have already been acked, so the skb cannot be discarded. | |
912 | * | |
913 | * Notify the l2cap core that the buffer is full, so the | |
914 | * LOCAL_BUSY state is entered and no more frames are | |
915 | * acked and reassembled until there is buffer space | |
916 | * available. | |
917 | */ | |
918 | if (err < 0 && pi->chan->mode == L2CAP_MODE_ERTM) { | |
919 | pi->rx_busy_skb = skb; | |
920 | l2cap_chan_busy(pi->chan, 1); | |
921 | err = 0; | |
922 | } | |
23070494 | 923 | |
e328140f | 924 | return err; |
23070494 GP |
925 | } |
926 | ||
ba3bd0ee GP |
927 | static void l2cap_sock_close_cb(void *data) |
928 | { | |
929 | struct sock *sk = data; | |
930 | ||
931 | l2cap_sock_kill(sk); | |
932 | } | |
933 | ||
89bc500e GP |
934 | static void l2cap_sock_state_change_cb(void *data, int state) |
935 | { | |
936 | struct sock *sk = data; | |
937 | ||
938 | sk->sk_state = state; | |
939 | } | |
940 | ||
80808e43 GP |
941 | static struct l2cap_ops l2cap_chan_ops = { |
942 | .name = "L2CAP Socket Interface", | |
943 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 944 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 945 | .close = l2cap_sock_close_cb, |
89bc500e | 946 | .state_change = l2cap_sock_state_change_cb, |
80808e43 GP |
947 | }; |
948 | ||
bb58f747 GP |
949 | static void l2cap_sock_destruct(struct sock *sk) |
950 | { | |
951 | BT_DBG("sk %p", sk); | |
952 | ||
e328140f MM |
953 | if (l2cap_pi(sk)->rx_busy_skb) { |
954 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
955 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
956 | } | |
957 | ||
bb58f747 GP |
958 | skb_queue_purge(&sk->sk_receive_queue); |
959 | skb_queue_purge(&sk->sk_write_queue); | |
960 | } | |
961 | ||
80808e43 | 962 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 GP |
963 | { |
964 | struct l2cap_pinfo *pi = l2cap_pi(sk); | |
b4450035 | 965 | struct l2cap_chan *chan = pi->chan; |
bb58f747 GP |
966 | |
967 | BT_DBG("sk %p", sk); | |
968 | ||
969 | if (parent) { | |
b4450035 GP |
970 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
971 | ||
bb58f747 GP |
972 | sk->sk_type = parent->sk_type; |
973 | bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup; | |
974 | ||
715ec005 | 975 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
976 | chan->imtu = pchan->imtu; |
977 | chan->omtu = pchan->omtu; | |
b4450035 | 978 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 979 | chan->mode = pchan->mode; |
47d1ec61 GP |
980 | chan->fcs = pchan->fcs; |
981 | chan->max_tx = pchan->max_tx; | |
982 | chan->tx_win = pchan->tx_win; | |
6b3c7104 | 983 | chan->tx_win_max = pchan->tx_win_max; |
4343478f | 984 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 985 | chan->flags = pchan->flags; |
6230c9b4 PM |
986 | |
987 | security_sk_clone(parent, sk); | |
bb58f747 | 988 | } else { |
715ec005 GP |
989 | |
990 | switch (sk->sk_type) { | |
991 | case SOCK_RAW: | |
992 | chan->chan_type = L2CAP_CHAN_RAW; | |
993 | break; | |
994 | case SOCK_DGRAM: | |
995 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
996 | break; | |
997 | case SOCK_SEQPACKET: | |
998 | case SOCK_STREAM: | |
999 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
1000 | break; | |
1001 | } | |
1002 | ||
0c1bc5c6 GP |
1003 | chan->imtu = L2CAP_DEFAULT_MTU; |
1004 | chan->omtu = 0; | |
bb58f747 | 1005 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 1006 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 1007 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 1008 | } else { |
0c1bc5c6 | 1009 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 1010 | } |
47d1ec61 GP |
1011 | chan->max_tx = L2CAP_DEFAULT_MAX_TX; |
1012 | chan->fcs = L2CAP_FCS_CRC16; | |
1013 | chan->tx_win = L2CAP_DEFAULT_TX_WINDOW; | |
6b3c7104 | 1014 | chan->tx_win_max = L2CAP_DEFAULT_TX_WINDOW; |
4343478f | 1015 | chan->sec_level = BT_SECURITY_LOW; |
d57b0e8b | 1016 | chan->flags = 0; |
15770b1a | 1017 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
bb58f747 GP |
1018 | } |
1019 | ||
1020 | /* Default config options */ | |
0c1bc5c6 | 1021 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
1022 | |
1023 | chan->data = sk; | |
1024 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
1025 | } |
1026 | ||
1027 | static struct proto l2cap_proto = { | |
1028 | .name = "L2CAP", | |
1029 | .owner = THIS_MODULE, | |
1030 | .obj_size = sizeof(struct l2cap_pinfo) | |
1031 | }; | |
1032 | ||
80808e43 | 1033 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
bb58f747 GP |
1034 | { |
1035 | struct sock *sk; | |
dc50a06d | 1036 | struct l2cap_chan *chan; |
bb58f747 GP |
1037 | |
1038 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
1039 | if (!sk) | |
1040 | return NULL; | |
1041 | ||
1042 | sock_init_data(sock, sk); | |
1043 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1044 | ||
1045 | sk->sk_destruct = l2cap_sock_destruct; | |
6be6b11f | 1046 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
bb58f747 GP |
1047 | |
1048 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1049 | ||
1050 | sk->sk_protocol = proto; | |
1051 | sk->sk_state = BT_OPEN; | |
1052 | ||
dc50a06d GP |
1053 | chan = l2cap_chan_create(sk); |
1054 | if (!chan) { | |
1055 | l2cap_sock_kill(sk); | |
1056 | return NULL; | |
1057 | } | |
1058 | ||
1059 | l2cap_pi(sk)->chan = chan; | |
1060 | ||
bb58f747 GP |
1061 | return sk; |
1062 | } | |
1063 | ||
1064 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1065 | int kern) | |
1066 | { | |
1067 | struct sock *sk; | |
1068 | ||
1069 | BT_DBG("sock %p", sock); | |
1070 | ||
1071 | sock->state = SS_UNCONNECTED; | |
1072 | ||
1073 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
1074 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) | |
1075 | return -ESOCKTNOSUPPORT; | |
1076 | ||
1077 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1078 | return -EPERM; | |
1079 | ||
1080 | sock->ops = &l2cap_sock_ops; | |
1081 | ||
1082 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1083 | if (!sk) | |
1084 | return -ENOMEM; | |
1085 | ||
1086 | l2cap_sock_init(sk, NULL); | |
1087 | return 0; | |
1088 | } | |
1089 | ||
cf2f90f5 | 1090 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1091 | .family = PF_BLUETOOTH, |
1092 | .owner = THIS_MODULE, | |
1093 | .release = l2cap_sock_release, | |
1094 | .bind = l2cap_sock_bind, | |
1095 | .connect = l2cap_sock_connect, | |
1096 | .listen = l2cap_sock_listen, | |
1097 | .accept = l2cap_sock_accept, | |
1098 | .getname = l2cap_sock_getname, | |
1099 | .sendmsg = l2cap_sock_sendmsg, | |
1100 | .recvmsg = l2cap_sock_recvmsg, | |
1101 | .poll = bt_sock_poll, | |
1102 | .ioctl = bt_sock_ioctl, | |
1103 | .mmap = sock_no_mmap, | |
1104 | .socketpair = sock_no_socketpair, | |
1105 | .shutdown = l2cap_sock_shutdown, | |
1106 | .setsockopt = l2cap_sock_setsockopt, | |
1107 | .getsockopt = l2cap_sock_getsockopt | |
1108 | }; | |
1109 | ||
bb58f747 GP |
1110 | static const struct net_proto_family l2cap_sock_family_ops = { |
1111 | .family = PF_BLUETOOTH, | |
1112 | .owner = THIS_MODULE, | |
1113 | .create = l2cap_sock_create, | |
1114 | }; | |
1115 | ||
1116 | int __init l2cap_init_sockets(void) | |
1117 | { | |
e2174ca4 | 1118 | int err; |
bb58f747 | 1119 | |
e2174ca4 GP |
1120 | err = proto_register(&l2cap_proto, 0); |
1121 | if (err < 0) | |
1122 | return err; | |
bb58f747 | 1123 | |
e2174ca4 GP |
1124 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
1125 | if (err < 0) | |
1126 | goto error; | |
bb58f747 | 1127 | |
e2174ca4 | 1128 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1129 | |
e2174ca4 | 1130 | return 0; |
bb58f747 GP |
1131 | |
1132 | error: | |
e2174ca4 GP |
1133 | BT_ERR("L2CAP socket registration failed"); |
1134 | proto_unregister(&l2cap_proto); | |
1135 | return err; | |
bb58f747 GP |
1136 | } |
1137 | ||
1138 | void l2cap_cleanup_sockets(void) | |
1139 | { | |
e2174ca4 GP |
1140 | if (bt_sock_unregister(BTPROTO_L2CAP) < 0) |
1141 | BT_ERR("L2CAP socket unregistration failed"); | |
bb58f747 | 1142 | |
e2174ca4 | 1143 | proto_unregister(&l2cap_proto); |
bb58f747 | 1144 | } |