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 | 84 | if (la.l2_cid) |
6e4aff10 | 85 | err = l2cap_add_scid(chan, __le16_to_cpu(la.l2_cid)); |
9e4425ff GP |
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 | ||
6e4aff10 SN |
126 | err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid), |
127 | &la.l2_bdaddr); | |
4e34c50b | 128 | if (err) |
b3fb611e | 129 | return err; |
4e34c50b | 130 | |
6be36555 AE |
131 | lock_sock(sk); |
132 | ||
4e34c50b GP |
133 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
134 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
b3fb611e AE |
135 | |
136 | release_sock(sk); | |
137 | ||
4e34c50b GP |
138 | return err; |
139 | } | |
140 | ||
af6bcd82 GP |
141 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
142 | { | |
143 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 144 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
145 | int err = 0; |
146 | ||
147 | BT_DBG("sk %p backlog %d", sk, backlog); | |
148 | ||
149 | lock_sock(sk); | |
150 | ||
151 | if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) | |
152 | || sk->sk_state != BT_BOUND) { | |
153 | err = -EBADFD; | |
154 | goto done; | |
155 | } | |
156 | ||
0c1bc5c6 | 157 | switch (chan->mode) { |
af6bcd82 GP |
158 | case L2CAP_MODE_BASIC: |
159 | break; | |
160 | case L2CAP_MODE_ERTM: | |
161 | case L2CAP_MODE_STREAMING: | |
162 | if (!disable_ertm) | |
163 | break; | |
164 | /* fall through */ | |
165 | default: | |
166 | err = -ENOTSUPP; | |
167 | goto done; | |
168 | } | |
169 | ||
af6bcd82 GP |
170 | sk->sk_max_ack_backlog = backlog; |
171 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
172 | |
173 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
174 | sk->sk_state = BT_LISTEN; |
175 | ||
176 | done: | |
177 | release_sock(sk); | |
178 | return err; | |
179 | } | |
180 | ||
c47b7c72 GP |
181 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags) |
182 | { | |
183 | DECLARE_WAITQUEUE(wait, current); | |
184 | struct sock *sk = sock->sk, *nsk; | |
185 | long timeo; | |
186 | int err = 0; | |
187 | ||
188 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
189 | ||
c47b7c72 GP |
190 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
191 | ||
192 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
193 | ||
194 | /* Wait for an incoming connection. (wake-one). */ | |
195 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 196 | while (1) { |
c47b7c72 | 197 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
198 | |
199 | if (sk->sk_state != BT_LISTEN) { | |
200 | err = -EBADFD; | |
c47b7c72 GP |
201 | break; |
202 | } | |
203 | ||
f9a3c20a PH |
204 | nsk = bt_accept_dequeue(sk, newsock); |
205 | if (nsk) | |
206 | break; | |
c47b7c72 | 207 | |
f9a3c20a PH |
208 | if (!timeo) { |
209 | err = -EAGAIN; | |
c47b7c72 GP |
210 | break; |
211 | } | |
212 | ||
213 | if (signal_pending(current)) { | |
214 | err = sock_intr_errno(timeo); | |
215 | break; | |
216 | } | |
f9a3c20a PH |
217 | |
218 | release_sock(sk); | |
219 | timeo = schedule_timeout(timeo); | |
220 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 221 | } |
f9a3c20a | 222 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
223 | remove_wait_queue(sk_sleep(sk), &wait); |
224 | ||
225 | if (err) | |
226 | goto done; | |
227 | ||
228 | newsock->state = SS_CONNECTED; | |
229 | ||
230 | BT_DBG("new socket %p", nsk); | |
231 | ||
232 | done: | |
233 | release_sock(sk); | |
234 | return err; | |
235 | } | |
236 | ||
d7175d55 GP |
237 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) |
238 | { | |
239 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
240 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 241 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
242 | |
243 | BT_DBG("sock %p, sk %p", sock, sk); | |
244 | ||
245 | addr->sa_family = AF_BLUETOOTH; | |
246 | *len = sizeof(struct sockaddr_l2); | |
247 | ||
248 | if (peer) { | |
fe4128e0 | 249 | la->l2_psm = chan->psm; |
d7175d55 | 250 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst); |
fe4128e0 | 251 | la->l2_cid = cpu_to_le16(chan->dcid); |
d7175d55 | 252 | } else { |
0c1bc5c6 | 253 | la->l2_psm = chan->sport; |
d7175d55 | 254 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->src); |
fe4128e0 | 255 | la->l2_cid = cpu_to_le16(chan->scid); |
d7175d55 GP |
256 | } |
257 | ||
258 | return 0; | |
259 | } | |
260 | ||
99f4808d GP |
261 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
262 | { | |
263 | struct sock *sk = sock->sk; | |
4343478f | 264 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
265 | struct l2cap_options opts; |
266 | struct l2cap_conninfo cinfo; | |
267 | int len, err = 0; | |
268 | u32 opt; | |
269 | ||
270 | BT_DBG("sk %p", sk); | |
271 | ||
272 | if (get_user(len, optlen)) | |
273 | return -EFAULT; | |
274 | ||
275 | lock_sock(sk); | |
276 | ||
277 | switch (optname) { | |
278 | case L2CAP_OPTIONS: | |
e3fb592b | 279 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
280 | opts.imtu = chan->imtu; |
281 | opts.omtu = chan->omtu; | |
282 | opts.flush_to = chan->flush_to; | |
283 | opts.mode = chan->mode; | |
47d1ec61 GP |
284 | opts.fcs = chan->fcs; |
285 | opts.max_tx = chan->max_tx; | |
6327eb98 | 286 | opts.txwin_size = chan->tx_win; |
99f4808d GP |
287 | |
288 | len = min_t(unsigned int, len, sizeof(opts)); | |
289 | if (copy_to_user(optval, (char *) &opts, len)) | |
290 | err = -EFAULT; | |
291 | ||
292 | break; | |
293 | ||
294 | case L2CAP_LM: | |
4343478f | 295 | switch (chan->sec_level) { |
99f4808d GP |
296 | case BT_SECURITY_LOW: |
297 | opt = L2CAP_LM_AUTH; | |
298 | break; | |
299 | case BT_SECURITY_MEDIUM: | |
300 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
301 | break; | |
302 | case BT_SECURITY_HIGH: | |
303 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
304 | L2CAP_LM_SECURE; | |
305 | break; | |
306 | default: | |
307 | opt = 0; | |
308 | break; | |
309 | } | |
310 | ||
43bd0f32 | 311 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
312 | opt |= L2CAP_LM_MASTER; |
313 | ||
ecf61bdb | 314 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
315 | opt |= L2CAP_LM_RELIABLE; |
316 | ||
317 | if (put_user(opt, (u32 __user *) optval)) | |
318 | err = -EFAULT; | |
319 | break; | |
320 | ||
321 | case L2CAP_CONNINFO: | |
322 | if (sk->sk_state != BT_CONNECTED && | |
323 | !(sk->sk_state == BT_CONNECT2 && | |
324 | bt_sk(sk)->defer_setup)) { | |
325 | err = -ENOTCONN; | |
326 | break; | |
327 | } | |
328 | ||
8d03e971 | 329 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
330 | cinfo.hci_handle = chan->conn->hcon->handle; |
331 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
332 | |
333 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
334 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
335 | err = -EFAULT; | |
336 | ||
337 | break; | |
338 | ||
339 | default: | |
340 | err = -ENOPROTOOPT; | |
341 | break; | |
342 | } | |
343 | ||
344 | release_sock(sk); | |
345 | return err; | |
346 | } | |
347 | ||
348 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
349 | { | |
350 | struct sock *sk = sock->sk; | |
4343478f | 351 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 352 | struct bt_security sec; |
14b12d0b | 353 | struct bt_power pwr; |
99f4808d GP |
354 | int len, err = 0; |
355 | ||
356 | BT_DBG("sk %p", sk); | |
357 | ||
358 | if (level == SOL_L2CAP) | |
359 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
360 | ||
361 | if (level != SOL_BLUETOOTH) | |
362 | return -ENOPROTOOPT; | |
363 | ||
364 | if (get_user(len, optlen)) | |
365 | return -EFAULT; | |
366 | ||
367 | lock_sock(sk); | |
368 | ||
369 | switch (optname) { | |
370 | case BT_SECURITY: | |
715ec005 GP |
371 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
372 | chan->chan_type != L2CAP_CHAN_RAW) { | |
99f4808d GP |
373 | err = -EINVAL; |
374 | break; | |
375 | } | |
376 | ||
8f360119 | 377 | memset(&sec, 0, sizeof(sec)); |
4343478f | 378 | sec.level = chan->sec_level; |
99f4808d | 379 | |
8f360119 VCG |
380 | if (sk->sk_state == BT_CONNECTED) |
381 | sec.key_size = chan->conn->hcon->enc_key_size; | |
382 | ||
99f4808d GP |
383 | len = min_t(unsigned int, len, sizeof(sec)); |
384 | if (copy_to_user(optval, (char *) &sec, len)) | |
385 | err = -EFAULT; | |
386 | ||
387 | break; | |
388 | ||
389 | case BT_DEFER_SETUP: | |
390 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
391 | err = -EINVAL; | |
392 | break; | |
393 | } | |
394 | ||
395 | if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval)) | |
396 | err = -EFAULT; | |
397 | ||
398 | break; | |
399 | ||
400 | case BT_FLUSHABLE: | |
d57b0e8b AE |
401 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
402 | (u32 __user *) optval)) | |
99f4808d GP |
403 | err = -EFAULT; |
404 | ||
405 | break; | |
406 | ||
14b12d0b JG |
407 | case BT_POWER: |
408 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
409 | && sk->sk_type != SOCK_RAW) { | |
410 | err = -EINVAL; | |
411 | break; | |
412 | } | |
413 | ||
15770b1a | 414 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
415 | |
416 | len = min_t(unsigned int, len, sizeof(pwr)); | |
417 | if (copy_to_user(optval, (char *) &pwr, len)) | |
418 | err = -EFAULT; | |
419 | ||
420 | break; | |
421 | ||
2ea66482 MM |
422 | case BT_CHANNEL_POLICY: |
423 | if (!enable_hs) { | |
424 | err = -ENOPROTOOPT; | |
425 | break; | |
426 | } | |
427 | ||
428 | if (put_user(chan->chan_policy, (u32 __user *) optval)) | |
429 | err = -EFAULT; | |
430 | break; | |
431 | ||
99f4808d GP |
432 | default: |
433 | err = -ENOPROTOOPT; | |
434 | break; | |
435 | } | |
436 | ||
437 | release_sock(sk); | |
438 | return err; | |
439 | } | |
440 | ||
33575df7 GP |
441 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
442 | { | |
443 | struct sock *sk = sock->sk; | |
b4450035 | 444 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
445 | struct l2cap_options opts; |
446 | int len, err = 0; | |
447 | u32 opt; | |
448 | ||
449 | BT_DBG("sk %p", sk); | |
450 | ||
451 | lock_sock(sk); | |
452 | ||
453 | switch (optname) { | |
454 | case L2CAP_OPTIONS: | |
455 | if (sk->sk_state == BT_CONNECTED) { | |
456 | err = -EINVAL; | |
457 | break; | |
458 | } | |
459 | ||
0c1bc5c6 GP |
460 | opts.imtu = chan->imtu; |
461 | opts.omtu = chan->omtu; | |
462 | opts.flush_to = chan->flush_to; | |
463 | opts.mode = chan->mode; | |
47d1ec61 GP |
464 | opts.fcs = chan->fcs; |
465 | opts.max_tx = chan->max_tx; | |
6327eb98 | 466 | opts.txwin_size = chan->tx_win; |
33575df7 GP |
467 | |
468 | len = min_t(unsigned int, sizeof(opts), optlen); | |
469 | if (copy_from_user((char *) &opts, optval, len)) { | |
470 | err = -EFAULT; | |
471 | break; | |
472 | } | |
473 | ||
6327eb98 | 474 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
33575df7 GP |
475 | err = -EINVAL; |
476 | break; | |
477 | } | |
478 | ||
0c1bc5c6 GP |
479 | chan->mode = opts.mode; |
480 | switch (chan->mode) { | |
33575df7 | 481 | case L2CAP_MODE_BASIC: |
c1360a1c | 482 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
483 | break; |
484 | case L2CAP_MODE_ERTM: | |
485 | case L2CAP_MODE_STREAMING: | |
486 | if (!disable_ertm) | |
487 | break; | |
488 | /* fall through */ | |
489 | default: | |
490 | err = -EINVAL; | |
491 | break; | |
492 | } | |
493 | ||
0c1bc5c6 GP |
494 | chan->imtu = opts.imtu; |
495 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
496 | chan->fcs = opts.fcs; |
497 | chan->max_tx = opts.max_tx; | |
6327eb98 | 498 | chan->tx_win = opts.txwin_size; |
33575df7 GP |
499 | break; |
500 | ||
501 | case L2CAP_LM: | |
502 | if (get_user(opt, (u32 __user *) optval)) { | |
503 | err = -EFAULT; | |
504 | break; | |
505 | } | |
506 | ||
507 | if (opt & L2CAP_LM_AUTH) | |
4343478f | 508 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 509 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 510 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 511 | if (opt & L2CAP_LM_SECURE) |
4343478f | 512 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 513 | |
43bd0f32 AE |
514 | if (opt & L2CAP_LM_MASTER) |
515 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
516 | else | |
517 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
518 | |
519 | if (opt & L2CAP_LM_RELIABLE) | |
520 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
521 | else | |
522 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
523 | break; |
524 | ||
525 | default: | |
526 | err = -ENOPROTOOPT; | |
527 | break; | |
528 | } | |
529 | ||
530 | release_sock(sk); | |
531 | return err; | |
532 | } | |
533 | ||
534 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) | |
535 | { | |
536 | struct sock *sk = sock->sk; | |
4343478f | 537 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 538 | struct bt_security sec; |
14b12d0b | 539 | struct bt_power pwr; |
f1cb9af5 | 540 | struct l2cap_conn *conn; |
33575df7 GP |
541 | int len, err = 0; |
542 | u32 opt; | |
543 | ||
544 | BT_DBG("sk %p", sk); | |
545 | ||
546 | if (level == SOL_L2CAP) | |
547 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
548 | ||
549 | if (level != SOL_BLUETOOTH) | |
550 | return -ENOPROTOOPT; | |
551 | ||
552 | lock_sock(sk); | |
553 | ||
554 | switch (optname) { | |
555 | case BT_SECURITY: | |
715ec005 GP |
556 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
557 | chan->chan_type != L2CAP_CHAN_RAW) { | |
33575df7 GP |
558 | err = -EINVAL; |
559 | break; | |
560 | } | |
561 | ||
562 | sec.level = BT_SECURITY_LOW; | |
563 | ||
564 | len = min_t(unsigned int, sizeof(sec), optlen); | |
565 | if (copy_from_user((char *) &sec, optval, len)) { | |
566 | err = -EFAULT; | |
567 | break; | |
568 | } | |
569 | ||
570 | if (sec.level < BT_SECURITY_LOW || | |
571 | sec.level > BT_SECURITY_HIGH) { | |
572 | err = -EINVAL; | |
573 | break; | |
574 | } | |
575 | ||
4343478f | 576 | chan->sec_level = sec.level; |
f1cb9af5 | 577 | |
0bee1d60 GP |
578 | if (!chan->conn) |
579 | break; | |
580 | ||
f1cb9af5 | 581 | conn = chan->conn; |
0bee1d60 GP |
582 | |
583 | /*change security for LE channels */ | |
584 | if (chan->scid == L2CAP_CID_LE_DATA) { | |
f1cb9af5 VCG |
585 | if (!conn->hcon->out) { |
586 | err = -EINVAL; | |
587 | break; | |
588 | } | |
589 | ||
590 | if (smp_conn_security(conn, sec.level)) | |
591 | break; | |
f1cb9af5 | 592 | sk->sk_state = BT_CONFIG; |
3542b854 | 593 | chan->state = BT_CONFIG; |
0bee1d60 GP |
594 | |
595 | /* or for ACL link, under defer_setup time */ | |
596 | } else if (sk->sk_state == BT_CONNECT2 && | |
597 | bt_sk(sk)->defer_setup) { | |
598 | err = l2cap_chan_check_security(chan); | |
599 | } else { | |
600 | err = -EINVAL; | |
f1cb9af5 | 601 | } |
33575df7 GP |
602 | break; |
603 | ||
604 | case BT_DEFER_SETUP: | |
605 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
606 | err = -EINVAL; | |
607 | break; | |
608 | } | |
609 | ||
610 | if (get_user(opt, (u32 __user *) optval)) { | |
611 | err = -EFAULT; | |
612 | break; | |
613 | } | |
614 | ||
615 | bt_sk(sk)->defer_setup = opt; | |
616 | break; | |
617 | ||
618 | case BT_FLUSHABLE: | |
619 | if (get_user(opt, (u32 __user *) optval)) { | |
620 | err = -EFAULT; | |
621 | break; | |
622 | } | |
623 | ||
624 | if (opt > BT_FLUSHABLE_ON) { | |
625 | err = -EINVAL; | |
626 | break; | |
627 | } | |
628 | ||
629 | if (opt == BT_FLUSHABLE_OFF) { | |
8c1d787b | 630 | struct l2cap_conn *conn = chan->conn; |
25985edc | 631 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
632 | No Flush support in the LM */ |
633 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
634 | err = -EINVAL; | |
635 | break; | |
636 | } | |
637 | } | |
638 | ||
d57b0e8b AE |
639 | if (opt) |
640 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
641 | else | |
642 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
643 | break; |
644 | ||
14b12d0b JG |
645 | case BT_POWER: |
646 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
647 | chan->chan_type != L2CAP_CHAN_RAW) { | |
648 | err = -EINVAL; | |
649 | break; | |
650 | } | |
651 | ||
652 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
653 | ||
654 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
655 | if (copy_from_user((char *) &pwr, optval, len)) { | |
656 | err = -EFAULT; | |
657 | break; | |
658 | } | |
15770b1a AE |
659 | |
660 | if (pwr.force_active) | |
661 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
662 | else | |
663 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
664 | break; |
665 | ||
2ea66482 MM |
666 | case BT_CHANNEL_POLICY: |
667 | if (!enable_hs) { | |
668 | err = -ENOPROTOOPT; | |
669 | break; | |
670 | } | |
671 | ||
672 | if (get_user(opt, (u32 __user *) optval)) { | |
673 | err = -EFAULT; | |
674 | break; | |
675 | } | |
676 | ||
677 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { | |
678 | err = -EINVAL; | |
679 | break; | |
680 | } | |
681 | ||
682 | if (chan->mode != L2CAP_MODE_ERTM && | |
683 | chan->mode != L2CAP_MODE_STREAMING) { | |
684 | err = -EOPNOTSUPP; | |
685 | break; | |
686 | } | |
687 | ||
688 | chan->chan_policy = (u8) opt; | |
14b12d0b JG |
689 | break; |
690 | ||
33575df7 GP |
691 | default: |
692 | err = -ENOPROTOOPT; | |
693 | break; | |
694 | } | |
695 | ||
696 | release_sock(sk); | |
697 | return err; | |
698 | } | |
fd83ccdb GP |
699 | |
700 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len) | |
701 | { | |
702 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 703 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
704 | int err; |
705 | ||
706 | BT_DBG("sock %p, sk %p", sock, sk); | |
707 | ||
708 | err = sock_error(sk); | |
709 | if (err) | |
710 | return err; | |
711 | ||
712 | if (msg->msg_flags & MSG_OOB) | |
713 | return -EOPNOTSUPP; | |
714 | ||
715 | lock_sock(sk); | |
716 | ||
717 | if (sk->sk_state != BT_CONNECTED) { | |
9a91a04a GP |
718 | release_sock(sk); |
719 | return -ENOTCONN; | |
fd83ccdb GP |
720 | } |
721 | ||
5e59b791 | 722 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
fd83ccdb | 723 | |
fd83ccdb GP |
724 | release_sock(sk); |
725 | return err; | |
726 | } | |
33575df7 | 727 | |
68983259 GP |
728 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) |
729 | { | |
730 | struct sock *sk = sock->sk; | |
e328140f MM |
731 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
732 | int err; | |
68983259 GP |
733 | |
734 | lock_sock(sk); | |
735 | ||
736 | if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) { | |
8c1d787b | 737 | sk->sk_state = BT_CONFIG; |
3542b854 | 738 | pi->chan->state = BT_CONFIG; |
8c1d787b | 739 | |
e328140f | 740 | __l2cap_connect_rsp_defer(pi->chan); |
68983259 GP |
741 | release_sock(sk); |
742 | return 0; | |
743 | } | |
744 | ||
745 | release_sock(sk); | |
746 | ||
747 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
748 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
749 | else | |
750 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
751 | ||
752 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
753 | return err; | |
754 | ||
755 | /* Attempt to put pending rx data in the socket buffer */ | |
756 | ||
757 | lock_sock(sk); | |
758 | ||
759 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
760 | goto done; | |
761 | ||
762 | if (pi->rx_busy_skb) { | |
763 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
764 | pi->rx_busy_skb = NULL; | |
765 | else | |
766 | goto done; | |
767 | } | |
768 | ||
769 | /* Restore data flow when half of the receive buffer is | |
770 | * available. This avoids resending large numbers of | |
771 | * frames. | |
772 | */ | |
773 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
774 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 775 | |
e328140f MM |
776 | done: |
777 | release_sock(sk); | |
778 | return err; | |
68983259 GP |
779 | } |
780 | ||
05fc1576 GP |
781 | /* Kill socket (only if zapped and orphan) |
782 | * Must be called on unlocked socket. | |
783 | */ | |
ba3bd0ee | 784 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
785 | { |
786 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
787 | return; | |
788 | ||
e05dcc32 | 789 | BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state)); |
05fc1576 GP |
790 | |
791 | /* Kill poor orphan */ | |
6ff5abbf | 792 | |
23691d75 | 793 | l2cap_chan_destroy(l2cap_pi(sk)->chan); |
05fc1576 GP |
794 | sock_set_flag(sk, SOCK_DEAD); |
795 | sock_put(sk); | |
796 | } | |
797 | ||
dcba0dba GP |
798 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
799 | { | |
800 | struct sock *sk = sock->sk; | |
7ddb6e0f | 801 | struct l2cap_chan *chan; |
3df91ea2 | 802 | struct l2cap_conn *conn; |
dcba0dba GP |
803 | int err = 0; |
804 | ||
805 | BT_DBG("sock %p, sk %p", sock, sk); | |
806 | ||
807 | if (!sk) | |
808 | return 0; | |
809 | ||
7ddb6e0f | 810 | chan = l2cap_pi(sk)->chan; |
3df91ea2 AE |
811 | conn = chan->conn; |
812 | ||
813 | if (conn) | |
814 | mutex_lock(&conn->chan_lock); | |
7ddb6e0f | 815 | |
6be36555 | 816 | l2cap_chan_lock(chan); |
dcba0dba | 817 | lock_sock(sk); |
6be36555 | 818 | |
dcba0dba | 819 | if (!sk->sk_shutdown) { |
0c1bc5c6 | 820 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
821 | err = __l2cap_wait_ack(sk); |
822 | ||
823 | sk->sk_shutdown = SHUTDOWN_MASK; | |
3df91ea2 | 824 | |
6be36555 | 825 | release_sock(sk); |
0f852724 | 826 | l2cap_chan_close(chan, 0); |
6be36555 | 827 | lock_sock(sk); |
dcba0dba GP |
828 | |
829 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
830 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
831 | sk->sk_lingertime); | |
832 | } | |
833 | ||
834 | if (!err && sk->sk_err) | |
835 | err = -sk->sk_err; | |
836 | ||
837 | release_sock(sk); | |
6be36555 | 838 | l2cap_chan_unlock(chan); |
3df91ea2 AE |
839 | |
840 | if (conn) | |
841 | mutex_unlock(&conn->chan_lock); | |
842 | ||
dcba0dba GP |
843 | return err; |
844 | } | |
845 | ||
554f05bb GP |
846 | static int l2cap_sock_release(struct socket *sock) |
847 | { | |
848 | struct sock *sk = sock->sk; | |
849 | int err; | |
850 | ||
851 | BT_DBG("sock %p, sk %p", sock, sk); | |
852 | ||
853 | if (!sk) | |
854 | return 0; | |
855 | ||
856 | err = l2cap_sock_shutdown(sock, 2); | |
857 | ||
858 | sock_orphan(sk); | |
859 | l2cap_sock_kill(sk); | |
860 | return err; | |
861 | } | |
862 | ||
80808e43 GP |
863 | static struct l2cap_chan *l2cap_sock_new_connection_cb(void *data) |
864 | { | |
865 | struct sock *sk, *parent = data; | |
866 | ||
867 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, | |
868 | GFP_ATOMIC); | |
869 | if (!sk) | |
870 | return NULL; | |
871 | ||
d22015aa OP |
872 | bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); |
873 | ||
80808e43 GP |
874 | l2cap_sock_init(sk, parent); |
875 | ||
876 | return l2cap_pi(sk)->chan; | |
877 | } | |
878 | ||
23070494 GP |
879 | static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb) |
880 | { | |
e328140f | 881 | int err; |
23070494 | 882 | struct sock *sk = data; |
e328140f MM |
883 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
884 | ||
6be36555 AE |
885 | lock_sock(sk); |
886 | ||
887 | if (pi->rx_busy_skb) { | |
888 | err = -ENOMEM; | |
889 | goto done; | |
890 | } | |
e328140f MM |
891 | |
892 | err = sock_queue_rcv_skb(sk, skb); | |
893 | ||
894 | /* For ERTM, handle one skb that doesn't fit into the recv | |
895 | * buffer. This is important to do because the data frames | |
896 | * have already been acked, so the skb cannot be discarded. | |
897 | * | |
898 | * Notify the l2cap core that the buffer is full, so the | |
899 | * LOCAL_BUSY state is entered and no more frames are | |
900 | * acked and reassembled until there is buffer space | |
901 | * available. | |
902 | */ | |
903 | if (err < 0 && pi->chan->mode == L2CAP_MODE_ERTM) { | |
904 | pi->rx_busy_skb = skb; | |
905 | l2cap_chan_busy(pi->chan, 1); | |
906 | err = 0; | |
907 | } | |
23070494 | 908 | |
6be36555 AE |
909 | done: |
910 | release_sock(sk); | |
911 | ||
e328140f | 912 | return err; |
23070494 GP |
913 | } |
914 | ||
ba3bd0ee GP |
915 | static void l2cap_sock_close_cb(void *data) |
916 | { | |
917 | struct sock *sk = data; | |
918 | ||
919 | l2cap_sock_kill(sk); | |
920 | } | |
921 | ||
89bc500e GP |
922 | static void l2cap_sock_state_change_cb(void *data, int state) |
923 | { | |
924 | struct sock *sk = data; | |
925 | ||
926 | sk->sk_state = state; | |
927 | } | |
928 | ||
2f7719ce | 929 | static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, |
04124681 GP |
930 | unsigned long len, int nb, |
931 | int *err) | |
2f7719ce AE |
932 | { |
933 | struct sock *sk = chan->sk; | |
934 | ||
935 | return bt_skb_send_alloc(sk, len, nb, err); | |
936 | } | |
937 | ||
80808e43 GP |
938 | static struct l2cap_ops l2cap_chan_ops = { |
939 | .name = "L2CAP Socket Interface", | |
940 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 941 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 942 | .close = l2cap_sock_close_cb, |
89bc500e | 943 | .state_change = l2cap_sock_state_change_cb, |
2f7719ce | 944 | .alloc_skb = l2cap_sock_alloc_skb_cb, |
80808e43 GP |
945 | }; |
946 | ||
bb58f747 GP |
947 | static void l2cap_sock_destruct(struct sock *sk) |
948 | { | |
949 | BT_DBG("sk %p", sk); | |
950 | ||
e328140f MM |
951 | if (l2cap_pi(sk)->rx_busy_skb) { |
952 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
953 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
954 | } | |
955 | ||
bb58f747 GP |
956 | skb_queue_purge(&sk->sk_receive_queue); |
957 | skb_queue_purge(&sk->sk_write_queue); | |
958 | } | |
959 | ||
80808e43 | 960 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 GP |
961 | { |
962 | struct l2cap_pinfo *pi = l2cap_pi(sk); | |
b4450035 | 963 | struct l2cap_chan *chan = pi->chan; |
bb58f747 GP |
964 | |
965 | BT_DBG("sk %p", sk); | |
966 | ||
967 | if (parent) { | |
b4450035 GP |
968 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
969 | ||
bb58f747 GP |
970 | sk->sk_type = parent->sk_type; |
971 | bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup; | |
972 | ||
715ec005 | 973 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
974 | chan->imtu = pchan->imtu; |
975 | chan->omtu = pchan->omtu; | |
b4450035 | 976 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 977 | chan->mode = pchan->mode; |
47d1ec61 GP |
978 | chan->fcs = pchan->fcs; |
979 | chan->max_tx = pchan->max_tx; | |
980 | chan->tx_win = pchan->tx_win; | |
6b3c7104 | 981 | chan->tx_win_max = pchan->tx_win_max; |
4343478f | 982 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 983 | chan->flags = pchan->flags; |
6230c9b4 PM |
984 | |
985 | security_sk_clone(parent, sk); | |
bb58f747 | 986 | } else { |
715ec005 GP |
987 | |
988 | switch (sk->sk_type) { | |
989 | case SOCK_RAW: | |
990 | chan->chan_type = L2CAP_CHAN_RAW; | |
991 | break; | |
992 | case SOCK_DGRAM: | |
993 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
994 | break; | |
995 | case SOCK_SEQPACKET: | |
996 | case SOCK_STREAM: | |
997 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
998 | break; | |
999 | } | |
1000 | ||
0c1bc5c6 GP |
1001 | chan->imtu = L2CAP_DEFAULT_MTU; |
1002 | chan->omtu = 0; | |
bb58f747 | 1003 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 1004 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 1005 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 1006 | } else { |
0c1bc5c6 | 1007 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 1008 | } |
bd4b1653 AE |
1009 | |
1010 | l2cap_chan_set_defaults(chan); | |
bb58f747 GP |
1011 | } |
1012 | ||
1013 | /* Default config options */ | |
0c1bc5c6 | 1014 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
1015 | |
1016 | chan->data = sk; | |
1017 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
1018 | } |
1019 | ||
1020 | static struct proto l2cap_proto = { | |
1021 | .name = "L2CAP", | |
1022 | .owner = THIS_MODULE, | |
1023 | .obj_size = sizeof(struct l2cap_pinfo) | |
1024 | }; | |
1025 | ||
80808e43 | 1026 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
bb58f747 GP |
1027 | { |
1028 | struct sock *sk; | |
dc50a06d | 1029 | struct l2cap_chan *chan; |
bb58f747 GP |
1030 | |
1031 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
1032 | if (!sk) | |
1033 | return NULL; | |
1034 | ||
1035 | sock_init_data(sock, sk); | |
1036 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1037 | ||
1038 | sk->sk_destruct = l2cap_sock_destruct; | |
ba13ccd9 | 1039 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
bb58f747 GP |
1040 | |
1041 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1042 | ||
1043 | sk->sk_protocol = proto; | |
1044 | sk->sk_state = BT_OPEN; | |
1045 | ||
eef1d9b6 | 1046 | chan = l2cap_chan_create(); |
dc50a06d GP |
1047 | if (!chan) { |
1048 | l2cap_sock_kill(sk); | |
1049 | return NULL; | |
1050 | } | |
1051 | ||
eef1d9b6 GP |
1052 | chan->sk = sk; |
1053 | ||
dc50a06d GP |
1054 | l2cap_pi(sk)->chan = chan; |
1055 | ||
bb58f747 GP |
1056 | return sk; |
1057 | } | |
1058 | ||
1059 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1060 | int kern) | |
1061 | { | |
1062 | struct sock *sk; | |
1063 | ||
1064 | BT_DBG("sock %p", sock); | |
1065 | ||
1066 | sock->state = SS_UNCONNECTED; | |
1067 | ||
1068 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
1069 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) | |
1070 | return -ESOCKTNOSUPPORT; | |
1071 | ||
1072 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1073 | return -EPERM; | |
1074 | ||
1075 | sock->ops = &l2cap_sock_ops; | |
1076 | ||
1077 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1078 | if (!sk) | |
1079 | return -ENOMEM; | |
1080 | ||
1081 | l2cap_sock_init(sk, NULL); | |
1082 | return 0; | |
1083 | } | |
1084 | ||
cf2f90f5 | 1085 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1086 | .family = PF_BLUETOOTH, |
1087 | .owner = THIS_MODULE, | |
1088 | .release = l2cap_sock_release, | |
1089 | .bind = l2cap_sock_bind, | |
1090 | .connect = l2cap_sock_connect, | |
1091 | .listen = l2cap_sock_listen, | |
1092 | .accept = l2cap_sock_accept, | |
1093 | .getname = l2cap_sock_getname, | |
1094 | .sendmsg = l2cap_sock_sendmsg, | |
1095 | .recvmsg = l2cap_sock_recvmsg, | |
1096 | .poll = bt_sock_poll, | |
1097 | .ioctl = bt_sock_ioctl, | |
1098 | .mmap = sock_no_mmap, | |
1099 | .socketpair = sock_no_socketpair, | |
1100 | .shutdown = l2cap_sock_shutdown, | |
1101 | .setsockopt = l2cap_sock_setsockopt, | |
1102 | .getsockopt = l2cap_sock_getsockopt | |
1103 | }; | |
1104 | ||
bb58f747 GP |
1105 | static const struct net_proto_family l2cap_sock_family_ops = { |
1106 | .family = PF_BLUETOOTH, | |
1107 | .owner = THIS_MODULE, | |
1108 | .create = l2cap_sock_create, | |
1109 | }; | |
1110 | ||
1111 | int __init l2cap_init_sockets(void) | |
1112 | { | |
e2174ca4 | 1113 | int err; |
bb58f747 | 1114 | |
e2174ca4 GP |
1115 | err = proto_register(&l2cap_proto, 0); |
1116 | if (err < 0) | |
1117 | return err; | |
bb58f747 | 1118 | |
e2174ca4 GP |
1119 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
1120 | if (err < 0) | |
1121 | goto error; | |
bb58f747 | 1122 | |
e2174ca4 | 1123 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1124 | |
e2174ca4 | 1125 | return 0; |
bb58f747 GP |
1126 | |
1127 | error: | |
e2174ca4 GP |
1128 | BT_ERR("L2CAP socket registration failed"); |
1129 | proto_unregister(&l2cap_proto); | |
1130 | return err; | |
bb58f747 GP |
1131 | } |
1132 | ||
1133 | void l2cap_cleanup_sockets(void) | |
1134 | { | |
e2174ca4 GP |
1135 | if (bt_sock_unregister(BTPROTO_L2CAP) < 0) |
1136 | BT_ERR("L2CAP socket unregistration failed"); | |
bb58f747 | 1137 | |
e2174ca4 | 1138 | proto_unregister(&l2cap_proto); |
bb58f747 | 1139 | } |