]>
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 | 127 | if (err) |
b3fb611e | 128 | return err; |
4e34c50b | 129 | |
6be36555 AE |
130 | lock_sock(sk); |
131 | ||
4e34c50b GP |
132 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
133 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
b3fb611e AE |
134 | |
135 | release_sock(sk); | |
136 | ||
4e34c50b GP |
137 | return err; |
138 | } | |
139 | ||
af6bcd82 GP |
140 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
141 | { | |
142 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 143 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
144 | int err = 0; |
145 | ||
146 | BT_DBG("sk %p backlog %d", sk, backlog); | |
147 | ||
148 | lock_sock(sk); | |
149 | ||
150 | if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) | |
151 | || sk->sk_state != BT_BOUND) { | |
152 | err = -EBADFD; | |
153 | goto done; | |
154 | } | |
155 | ||
0c1bc5c6 | 156 | switch (chan->mode) { |
af6bcd82 GP |
157 | case L2CAP_MODE_BASIC: |
158 | break; | |
159 | case L2CAP_MODE_ERTM: | |
160 | case L2CAP_MODE_STREAMING: | |
161 | if (!disable_ertm) | |
162 | break; | |
163 | /* fall through */ | |
164 | default: | |
165 | err = -ENOTSUPP; | |
166 | goto done; | |
167 | } | |
168 | ||
af6bcd82 GP |
169 | sk->sk_max_ack_backlog = backlog; |
170 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
171 | |
172 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
173 | sk->sk_state = BT_LISTEN; |
174 | ||
175 | done: | |
176 | release_sock(sk); | |
177 | return err; | |
178 | } | |
179 | ||
c47b7c72 GP |
180 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags) |
181 | { | |
182 | DECLARE_WAITQUEUE(wait, current); | |
183 | struct sock *sk = sock->sk, *nsk; | |
184 | long timeo; | |
185 | int err = 0; | |
186 | ||
187 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
188 | ||
c47b7c72 GP |
189 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
190 | ||
191 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
192 | ||
193 | /* Wait for an incoming connection. (wake-one). */ | |
194 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 195 | while (1) { |
c47b7c72 | 196 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
197 | |
198 | if (sk->sk_state != BT_LISTEN) { | |
199 | err = -EBADFD; | |
c47b7c72 GP |
200 | break; |
201 | } | |
202 | ||
f9a3c20a PH |
203 | nsk = bt_accept_dequeue(sk, newsock); |
204 | if (nsk) | |
205 | break; | |
c47b7c72 | 206 | |
f9a3c20a PH |
207 | if (!timeo) { |
208 | err = -EAGAIN; | |
c47b7c72 GP |
209 | break; |
210 | } | |
211 | ||
212 | if (signal_pending(current)) { | |
213 | err = sock_intr_errno(timeo); | |
214 | break; | |
215 | } | |
f9a3c20a PH |
216 | |
217 | release_sock(sk); | |
218 | timeo = schedule_timeout(timeo); | |
219 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 220 | } |
f9a3c20a | 221 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
222 | remove_wait_queue(sk_sleep(sk), &wait); |
223 | ||
224 | if (err) | |
225 | goto done; | |
226 | ||
227 | newsock->state = SS_CONNECTED; | |
228 | ||
229 | BT_DBG("new socket %p", nsk); | |
230 | ||
231 | done: | |
232 | release_sock(sk); | |
233 | return err; | |
234 | } | |
235 | ||
d7175d55 GP |
236 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) |
237 | { | |
238 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
239 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 240 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
241 | |
242 | BT_DBG("sock %p, sk %p", sock, sk); | |
243 | ||
244 | addr->sa_family = AF_BLUETOOTH; | |
245 | *len = sizeof(struct sockaddr_l2); | |
246 | ||
247 | if (peer) { | |
fe4128e0 | 248 | la->l2_psm = chan->psm; |
d7175d55 | 249 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst); |
fe4128e0 | 250 | la->l2_cid = cpu_to_le16(chan->dcid); |
d7175d55 | 251 | } else { |
0c1bc5c6 | 252 | la->l2_psm = chan->sport; |
d7175d55 | 253 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->src); |
fe4128e0 | 254 | la->l2_cid = cpu_to_le16(chan->scid); |
d7175d55 GP |
255 | } |
256 | ||
257 | return 0; | |
258 | } | |
259 | ||
99f4808d GP |
260 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
261 | { | |
262 | struct sock *sk = sock->sk; | |
4343478f | 263 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
264 | struct l2cap_options opts; |
265 | struct l2cap_conninfo cinfo; | |
266 | int len, err = 0; | |
267 | u32 opt; | |
268 | ||
269 | BT_DBG("sk %p", sk); | |
270 | ||
271 | if (get_user(len, optlen)) | |
272 | return -EFAULT; | |
273 | ||
274 | lock_sock(sk); | |
275 | ||
276 | switch (optname) { | |
277 | case L2CAP_OPTIONS: | |
e3fb592b | 278 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
279 | opts.imtu = chan->imtu; |
280 | opts.omtu = chan->omtu; | |
281 | opts.flush_to = chan->flush_to; | |
282 | opts.mode = chan->mode; | |
47d1ec61 GP |
283 | opts.fcs = chan->fcs; |
284 | opts.max_tx = chan->max_tx; | |
6327eb98 | 285 | opts.txwin_size = chan->tx_win; |
99f4808d GP |
286 | |
287 | len = min_t(unsigned int, len, sizeof(opts)); | |
288 | if (copy_to_user(optval, (char *) &opts, len)) | |
289 | err = -EFAULT; | |
290 | ||
291 | break; | |
292 | ||
293 | case L2CAP_LM: | |
4343478f | 294 | switch (chan->sec_level) { |
99f4808d GP |
295 | case BT_SECURITY_LOW: |
296 | opt = L2CAP_LM_AUTH; | |
297 | break; | |
298 | case BT_SECURITY_MEDIUM: | |
299 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
300 | break; | |
301 | case BT_SECURITY_HIGH: | |
302 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
303 | L2CAP_LM_SECURE; | |
304 | break; | |
305 | default: | |
306 | opt = 0; | |
307 | break; | |
308 | } | |
309 | ||
43bd0f32 | 310 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
311 | opt |= L2CAP_LM_MASTER; |
312 | ||
ecf61bdb | 313 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
314 | opt |= L2CAP_LM_RELIABLE; |
315 | ||
316 | if (put_user(opt, (u32 __user *) optval)) | |
317 | err = -EFAULT; | |
318 | break; | |
319 | ||
320 | case L2CAP_CONNINFO: | |
321 | if (sk->sk_state != BT_CONNECTED && | |
322 | !(sk->sk_state == BT_CONNECT2 && | |
323 | bt_sk(sk)->defer_setup)) { | |
324 | err = -ENOTCONN; | |
325 | break; | |
326 | } | |
327 | ||
8d03e971 | 328 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
329 | cinfo.hci_handle = chan->conn->hcon->handle; |
330 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
331 | |
332 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
333 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
334 | err = -EFAULT; | |
335 | ||
336 | break; | |
337 | ||
338 | default: | |
339 | err = -ENOPROTOOPT; | |
340 | break; | |
341 | } | |
342 | ||
343 | release_sock(sk); | |
344 | return err; | |
345 | } | |
346 | ||
347 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
348 | { | |
349 | struct sock *sk = sock->sk; | |
4343478f | 350 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 351 | struct bt_security sec; |
14b12d0b | 352 | struct bt_power pwr; |
99f4808d GP |
353 | int len, err = 0; |
354 | ||
355 | BT_DBG("sk %p", sk); | |
356 | ||
357 | if (level == SOL_L2CAP) | |
358 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
359 | ||
360 | if (level != SOL_BLUETOOTH) | |
361 | return -ENOPROTOOPT; | |
362 | ||
363 | if (get_user(len, optlen)) | |
364 | return -EFAULT; | |
365 | ||
366 | lock_sock(sk); | |
367 | ||
368 | switch (optname) { | |
369 | case BT_SECURITY: | |
715ec005 GP |
370 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
371 | chan->chan_type != L2CAP_CHAN_RAW) { | |
99f4808d GP |
372 | err = -EINVAL; |
373 | break; | |
374 | } | |
375 | ||
8f360119 | 376 | memset(&sec, 0, sizeof(sec)); |
4343478f | 377 | sec.level = chan->sec_level; |
99f4808d | 378 | |
8f360119 VCG |
379 | if (sk->sk_state == BT_CONNECTED) |
380 | sec.key_size = chan->conn->hcon->enc_key_size; | |
381 | ||
99f4808d GP |
382 | len = min_t(unsigned int, len, sizeof(sec)); |
383 | if (copy_to_user(optval, (char *) &sec, len)) | |
384 | err = -EFAULT; | |
385 | ||
386 | break; | |
387 | ||
388 | case BT_DEFER_SETUP: | |
389 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
390 | err = -EINVAL; | |
391 | break; | |
392 | } | |
393 | ||
394 | if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval)) | |
395 | err = -EFAULT; | |
396 | ||
397 | break; | |
398 | ||
399 | case BT_FLUSHABLE: | |
d57b0e8b AE |
400 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
401 | (u32 __user *) optval)) | |
99f4808d GP |
402 | err = -EFAULT; |
403 | ||
404 | break; | |
405 | ||
14b12d0b JG |
406 | case BT_POWER: |
407 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
408 | && sk->sk_type != SOCK_RAW) { | |
409 | err = -EINVAL; | |
410 | break; | |
411 | } | |
412 | ||
15770b1a | 413 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
414 | |
415 | len = min_t(unsigned int, len, sizeof(pwr)); | |
416 | if (copy_to_user(optval, (char *) &pwr, len)) | |
417 | err = -EFAULT; | |
418 | ||
419 | break; | |
420 | ||
2ea66482 MM |
421 | case BT_CHANNEL_POLICY: |
422 | if (!enable_hs) { | |
423 | err = -ENOPROTOOPT; | |
424 | break; | |
425 | } | |
426 | ||
427 | if (put_user(chan->chan_policy, (u32 __user *) optval)) | |
428 | err = -EFAULT; | |
429 | break; | |
430 | ||
99f4808d GP |
431 | default: |
432 | err = -ENOPROTOOPT; | |
433 | break; | |
434 | } | |
435 | ||
436 | release_sock(sk); | |
437 | return err; | |
438 | } | |
439 | ||
33575df7 GP |
440 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
441 | { | |
442 | struct sock *sk = sock->sk; | |
b4450035 | 443 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
444 | struct l2cap_options opts; |
445 | int len, err = 0; | |
446 | u32 opt; | |
447 | ||
448 | BT_DBG("sk %p", sk); | |
449 | ||
450 | lock_sock(sk); | |
451 | ||
452 | switch (optname) { | |
453 | case L2CAP_OPTIONS: | |
454 | if (sk->sk_state == BT_CONNECTED) { | |
455 | err = -EINVAL; | |
456 | break; | |
457 | } | |
458 | ||
0c1bc5c6 GP |
459 | opts.imtu = chan->imtu; |
460 | opts.omtu = chan->omtu; | |
461 | opts.flush_to = chan->flush_to; | |
462 | opts.mode = chan->mode; | |
47d1ec61 GP |
463 | opts.fcs = chan->fcs; |
464 | opts.max_tx = chan->max_tx; | |
6327eb98 | 465 | opts.txwin_size = chan->tx_win; |
33575df7 GP |
466 | |
467 | len = min_t(unsigned int, sizeof(opts), optlen); | |
468 | if (copy_from_user((char *) &opts, optval, len)) { | |
469 | err = -EFAULT; | |
470 | break; | |
471 | } | |
472 | ||
6327eb98 | 473 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
33575df7 GP |
474 | err = -EINVAL; |
475 | break; | |
476 | } | |
477 | ||
0c1bc5c6 GP |
478 | chan->mode = opts.mode; |
479 | switch (chan->mode) { | |
33575df7 | 480 | case L2CAP_MODE_BASIC: |
c1360a1c | 481 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
482 | break; |
483 | case L2CAP_MODE_ERTM: | |
484 | case L2CAP_MODE_STREAMING: | |
485 | if (!disable_ertm) | |
486 | break; | |
487 | /* fall through */ | |
488 | default: | |
489 | err = -EINVAL; | |
490 | break; | |
491 | } | |
492 | ||
0c1bc5c6 GP |
493 | chan->imtu = opts.imtu; |
494 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
495 | chan->fcs = opts.fcs; |
496 | chan->max_tx = opts.max_tx; | |
6327eb98 | 497 | chan->tx_win = opts.txwin_size; |
33575df7 GP |
498 | break; |
499 | ||
500 | case L2CAP_LM: | |
501 | if (get_user(opt, (u32 __user *) optval)) { | |
502 | err = -EFAULT; | |
503 | break; | |
504 | } | |
505 | ||
506 | if (opt & L2CAP_LM_AUTH) | |
4343478f | 507 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 508 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 509 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 510 | if (opt & L2CAP_LM_SECURE) |
4343478f | 511 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 512 | |
43bd0f32 AE |
513 | if (opt & L2CAP_LM_MASTER) |
514 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
515 | else | |
516 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
517 | |
518 | if (opt & L2CAP_LM_RELIABLE) | |
519 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
520 | else | |
521 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
522 | break; |
523 | ||
524 | default: | |
525 | err = -ENOPROTOOPT; | |
526 | break; | |
527 | } | |
528 | ||
529 | release_sock(sk); | |
530 | return err; | |
531 | } | |
532 | ||
533 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) | |
534 | { | |
535 | struct sock *sk = sock->sk; | |
4343478f | 536 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 537 | struct bt_security sec; |
14b12d0b | 538 | struct bt_power pwr; |
f1cb9af5 | 539 | struct l2cap_conn *conn; |
33575df7 GP |
540 | int len, err = 0; |
541 | u32 opt; | |
542 | ||
543 | BT_DBG("sk %p", sk); | |
544 | ||
545 | if (level == SOL_L2CAP) | |
546 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
547 | ||
548 | if (level != SOL_BLUETOOTH) | |
549 | return -ENOPROTOOPT; | |
550 | ||
551 | lock_sock(sk); | |
552 | ||
553 | switch (optname) { | |
554 | case BT_SECURITY: | |
715ec005 GP |
555 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
556 | chan->chan_type != L2CAP_CHAN_RAW) { | |
33575df7 GP |
557 | err = -EINVAL; |
558 | break; | |
559 | } | |
560 | ||
561 | sec.level = BT_SECURITY_LOW; | |
562 | ||
563 | len = min_t(unsigned int, sizeof(sec), optlen); | |
564 | if (copy_from_user((char *) &sec, optval, len)) { | |
565 | err = -EFAULT; | |
566 | break; | |
567 | } | |
568 | ||
569 | if (sec.level < BT_SECURITY_LOW || | |
570 | sec.level > BT_SECURITY_HIGH) { | |
571 | err = -EINVAL; | |
572 | break; | |
573 | } | |
574 | ||
4343478f | 575 | chan->sec_level = sec.level; |
f1cb9af5 | 576 | |
0bee1d60 GP |
577 | if (!chan->conn) |
578 | break; | |
579 | ||
f1cb9af5 | 580 | conn = chan->conn; |
0bee1d60 GP |
581 | |
582 | /*change security for LE channels */ | |
583 | if (chan->scid == L2CAP_CID_LE_DATA) { | |
f1cb9af5 VCG |
584 | if (!conn->hcon->out) { |
585 | err = -EINVAL; | |
586 | break; | |
587 | } | |
588 | ||
589 | if (smp_conn_security(conn, sec.level)) | |
590 | break; | |
f1cb9af5 | 591 | sk->sk_state = BT_CONFIG; |
3542b854 | 592 | chan->state = BT_CONFIG; |
0bee1d60 GP |
593 | |
594 | /* or for ACL link, under defer_setup time */ | |
595 | } else if (sk->sk_state == BT_CONNECT2 && | |
596 | bt_sk(sk)->defer_setup) { | |
597 | err = l2cap_chan_check_security(chan); | |
598 | } else { | |
599 | err = -EINVAL; | |
f1cb9af5 | 600 | } |
33575df7 GP |
601 | break; |
602 | ||
603 | case BT_DEFER_SETUP: | |
604 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
605 | err = -EINVAL; | |
606 | break; | |
607 | } | |
608 | ||
609 | if (get_user(opt, (u32 __user *) optval)) { | |
610 | err = -EFAULT; | |
611 | break; | |
612 | } | |
613 | ||
614 | bt_sk(sk)->defer_setup = opt; | |
615 | break; | |
616 | ||
617 | case BT_FLUSHABLE: | |
618 | if (get_user(opt, (u32 __user *) optval)) { | |
619 | err = -EFAULT; | |
620 | break; | |
621 | } | |
622 | ||
623 | if (opt > BT_FLUSHABLE_ON) { | |
624 | err = -EINVAL; | |
625 | break; | |
626 | } | |
627 | ||
628 | if (opt == BT_FLUSHABLE_OFF) { | |
8c1d787b | 629 | struct l2cap_conn *conn = chan->conn; |
25985edc | 630 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
631 | No Flush support in the LM */ |
632 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
633 | err = -EINVAL; | |
634 | break; | |
635 | } | |
636 | } | |
637 | ||
d57b0e8b AE |
638 | if (opt) |
639 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
640 | else | |
641 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
642 | break; |
643 | ||
14b12d0b JG |
644 | case BT_POWER: |
645 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
646 | chan->chan_type != L2CAP_CHAN_RAW) { | |
647 | err = -EINVAL; | |
648 | break; | |
649 | } | |
650 | ||
651 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
652 | ||
653 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
654 | if (copy_from_user((char *) &pwr, optval, len)) { | |
655 | err = -EFAULT; | |
656 | break; | |
657 | } | |
15770b1a AE |
658 | |
659 | if (pwr.force_active) | |
660 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
661 | else | |
662 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
663 | break; |
664 | ||
2ea66482 MM |
665 | case BT_CHANNEL_POLICY: |
666 | if (!enable_hs) { | |
667 | err = -ENOPROTOOPT; | |
668 | break; | |
669 | } | |
670 | ||
671 | if (get_user(opt, (u32 __user *) optval)) { | |
672 | err = -EFAULT; | |
673 | break; | |
674 | } | |
675 | ||
676 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { | |
677 | err = -EINVAL; | |
678 | break; | |
679 | } | |
680 | ||
681 | if (chan->mode != L2CAP_MODE_ERTM && | |
682 | chan->mode != L2CAP_MODE_STREAMING) { | |
683 | err = -EOPNOTSUPP; | |
684 | break; | |
685 | } | |
686 | ||
687 | chan->chan_policy = (u8) opt; | |
14b12d0b JG |
688 | break; |
689 | ||
33575df7 GP |
690 | default: |
691 | err = -ENOPROTOOPT; | |
692 | break; | |
693 | } | |
694 | ||
695 | release_sock(sk); | |
696 | return err; | |
697 | } | |
fd83ccdb GP |
698 | |
699 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len) | |
700 | { | |
701 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 702 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
703 | int err; |
704 | ||
705 | BT_DBG("sock %p, sk %p", sock, sk); | |
706 | ||
707 | err = sock_error(sk); | |
708 | if (err) | |
709 | return err; | |
710 | ||
711 | if (msg->msg_flags & MSG_OOB) | |
712 | return -EOPNOTSUPP; | |
713 | ||
714 | lock_sock(sk); | |
715 | ||
716 | if (sk->sk_state != BT_CONNECTED) { | |
9a91a04a GP |
717 | release_sock(sk); |
718 | return -ENOTCONN; | |
fd83ccdb GP |
719 | } |
720 | ||
5e59b791 | 721 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
fd83ccdb | 722 | |
fd83ccdb GP |
723 | release_sock(sk); |
724 | return err; | |
725 | } | |
33575df7 | 726 | |
68983259 GP |
727 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) |
728 | { | |
729 | struct sock *sk = sock->sk; | |
e328140f MM |
730 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
731 | int err; | |
68983259 GP |
732 | |
733 | lock_sock(sk); | |
734 | ||
735 | if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) { | |
8c1d787b | 736 | sk->sk_state = BT_CONFIG; |
3542b854 | 737 | pi->chan->state = BT_CONFIG; |
8c1d787b | 738 | |
e328140f | 739 | __l2cap_connect_rsp_defer(pi->chan); |
68983259 GP |
740 | release_sock(sk); |
741 | return 0; | |
742 | } | |
743 | ||
744 | release_sock(sk); | |
745 | ||
746 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
747 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
748 | else | |
749 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
750 | ||
751 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
752 | return err; | |
753 | ||
754 | /* Attempt to put pending rx data in the socket buffer */ | |
755 | ||
756 | lock_sock(sk); | |
757 | ||
758 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
759 | goto done; | |
760 | ||
761 | if (pi->rx_busy_skb) { | |
762 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
763 | pi->rx_busy_skb = NULL; | |
764 | else | |
765 | goto done; | |
766 | } | |
767 | ||
768 | /* Restore data flow when half of the receive buffer is | |
769 | * available. This avoids resending large numbers of | |
770 | * frames. | |
771 | */ | |
772 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
773 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 774 | |
e328140f MM |
775 | done: |
776 | release_sock(sk); | |
777 | return err; | |
68983259 GP |
778 | } |
779 | ||
05fc1576 GP |
780 | /* Kill socket (only if zapped and orphan) |
781 | * Must be called on unlocked socket. | |
782 | */ | |
ba3bd0ee | 783 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
784 | { |
785 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
786 | return; | |
787 | ||
e05dcc32 | 788 | BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state)); |
05fc1576 GP |
789 | |
790 | /* Kill poor orphan */ | |
6ff5abbf | 791 | |
23691d75 | 792 | l2cap_chan_destroy(l2cap_pi(sk)->chan); |
05fc1576 GP |
793 | sock_set_flag(sk, SOCK_DEAD); |
794 | sock_put(sk); | |
795 | } | |
796 | ||
dcba0dba GP |
797 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
798 | { | |
799 | struct sock *sk = sock->sk; | |
7ddb6e0f | 800 | struct l2cap_chan *chan; |
3df91ea2 | 801 | struct l2cap_conn *conn; |
dcba0dba GP |
802 | int err = 0; |
803 | ||
804 | BT_DBG("sock %p, sk %p", sock, sk); | |
805 | ||
806 | if (!sk) | |
807 | return 0; | |
808 | ||
7ddb6e0f | 809 | chan = l2cap_pi(sk)->chan; |
3df91ea2 AE |
810 | conn = chan->conn; |
811 | ||
812 | if (conn) | |
813 | mutex_lock(&conn->chan_lock); | |
7ddb6e0f | 814 | |
6be36555 | 815 | l2cap_chan_lock(chan); |
dcba0dba | 816 | lock_sock(sk); |
6be36555 | 817 | |
dcba0dba | 818 | if (!sk->sk_shutdown) { |
0c1bc5c6 | 819 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
820 | err = __l2cap_wait_ack(sk); |
821 | ||
822 | sk->sk_shutdown = SHUTDOWN_MASK; | |
3df91ea2 | 823 | |
6be36555 | 824 | release_sock(sk); |
0f852724 | 825 | l2cap_chan_close(chan, 0); |
6be36555 | 826 | lock_sock(sk); |
dcba0dba GP |
827 | |
828 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
829 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
830 | sk->sk_lingertime); | |
831 | } | |
832 | ||
833 | if (!err && sk->sk_err) | |
834 | err = -sk->sk_err; | |
835 | ||
836 | release_sock(sk); | |
6be36555 | 837 | l2cap_chan_unlock(chan); |
3df91ea2 AE |
838 | |
839 | if (conn) | |
840 | mutex_unlock(&conn->chan_lock); | |
841 | ||
dcba0dba GP |
842 | return err; |
843 | } | |
844 | ||
554f05bb GP |
845 | static int l2cap_sock_release(struct socket *sock) |
846 | { | |
847 | struct sock *sk = sock->sk; | |
848 | int err; | |
849 | ||
850 | BT_DBG("sock %p, sk %p", sock, sk); | |
851 | ||
852 | if (!sk) | |
853 | return 0; | |
854 | ||
855 | err = l2cap_sock_shutdown(sock, 2); | |
856 | ||
857 | sock_orphan(sk); | |
858 | l2cap_sock_kill(sk); | |
859 | return err; | |
860 | } | |
861 | ||
80808e43 GP |
862 | static struct l2cap_chan *l2cap_sock_new_connection_cb(void *data) |
863 | { | |
864 | struct sock *sk, *parent = data; | |
865 | ||
866 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, | |
867 | GFP_ATOMIC); | |
868 | if (!sk) | |
869 | return NULL; | |
870 | ||
d22015aa OP |
871 | bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); |
872 | ||
80808e43 GP |
873 | l2cap_sock_init(sk, parent); |
874 | ||
875 | return l2cap_pi(sk)->chan; | |
876 | } | |
877 | ||
23070494 GP |
878 | static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb) |
879 | { | |
e328140f | 880 | int err; |
23070494 | 881 | struct sock *sk = data; |
e328140f MM |
882 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
883 | ||
6be36555 AE |
884 | lock_sock(sk); |
885 | ||
886 | if (pi->rx_busy_skb) { | |
887 | err = -ENOMEM; | |
888 | goto done; | |
889 | } | |
e328140f MM |
890 | |
891 | err = sock_queue_rcv_skb(sk, skb); | |
892 | ||
893 | /* For ERTM, handle one skb that doesn't fit into the recv | |
894 | * buffer. This is important to do because the data frames | |
895 | * have already been acked, so the skb cannot be discarded. | |
896 | * | |
897 | * Notify the l2cap core that the buffer is full, so the | |
898 | * LOCAL_BUSY state is entered and no more frames are | |
899 | * acked and reassembled until there is buffer space | |
900 | * available. | |
901 | */ | |
902 | if (err < 0 && pi->chan->mode == L2CAP_MODE_ERTM) { | |
903 | pi->rx_busy_skb = skb; | |
904 | l2cap_chan_busy(pi->chan, 1); | |
905 | err = 0; | |
906 | } | |
23070494 | 907 | |
6be36555 AE |
908 | done: |
909 | release_sock(sk); | |
910 | ||
e328140f | 911 | return err; |
23070494 GP |
912 | } |
913 | ||
ba3bd0ee GP |
914 | static void l2cap_sock_close_cb(void *data) |
915 | { | |
916 | struct sock *sk = data; | |
917 | ||
918 | l2cap_sock_kill(sk); | |
919 | } | |
920 | ||
89bc500e GP |
921 | static void l2cap_sock_state_change_cb(void *data, int state) |
922 | { | |
923 | struct sock *sk = data; | |
924 | ||
925 | sk->sk_state = state; | |
926 | } | |
927 | ||
2f7719ce | 928 | static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, |
04124681 GP |
929 | unsigned long len, int nb, |
930 | int *err) | |
2f7719ce AE |
931 | { |
932 | struct sock *sk = chan->sk; | |
933 | ||
934 | return bt_skb_send_alloc(sk, len, nb, err); | |
935 | } | |
936 | ||
80808e43 GP |
937 | static struct l2cap_ops l2cap_chan_ops = { |
938 | .name = "L2CAP Socket Interface", | |
939 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 940 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 941 | .close = l2cap_sock_close_cb, |
89bc500e | 942 | .state_change = l2cap_sock_state_change_cb, |
2f7719ce | 943 | .alloc_skb = l2cap_sock_alloc_skb_cb, |
80808e43 GP |
944 | }; |
945 | ||
bb58f747 GP |
946 | static void l2cap_sock_destruct(struct sock *sk) |
947 | { | |
948 | BT_DBG("sk %p", sk); | |
949 | ||
e328140f MM |
950 | if (l2cap_pi(sk)->rx_busy_skb) { |
951 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
952 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
953 | } | |
954 | ||
bb58f747 GP |
955 | skb_queue_purge(&sk->sk_receive_queue); |
956 | skb_queue_purge(&sk->sk_write_queue); | |
957 | } | |
958 | ||
80808e43 | 959 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 GP |
960 | { |
961 | struct l2cap_pinfo *pi = l2cap_pi(sk); | |
b4450035 | 962 | struct l2cap_chan *chan = pi->chan; |
bb58f747 GP |
963 | |
964 | BT_DBG("sk %p", sk); | |
965 | ||
966 | if (parent) { | |
b4450035 GP |
967 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
968 | ||
bb58f747 GP |
969 | sk->sk_type = parent->sk_type; |
970 | bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup; | |
971 | ||
715ec005 | 972 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
973 | chan->imtu = pchan->imtu; |
974 | chan->omtu = pchan->omtu; | |
b4450035 | 975 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 976 | chan->mode = pchan->mode; |
47d1ec61 GP |
977 | chan->fcs = pchan->fcs; |
978 | chan->max_tx = pchan->max_tx; | |
979 | chan->tx_win = pchan->tx_win; | |
6b3c7104 | 980 | chan->tx_win_max = pchan->tx_win_max; |
4343478f | 981 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 982 | chan->flags = pchan->flags; |
6230c9b4 PM |
983 | |
984 | security_sk_clone(parent, sk); | |
bb58f747 | 985 | } else { |
715ec005 GP |
986 | |
987 | switch (sk->sk_type) { | |
988 | case SOCK_RAW: | |
989 | chan->chan_type = L2CAP_CHAN_RAW; | |
990 | break; | |
991 | case SOCK_DGRAM: | |
992 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
993 | break; | |
994 | case SOCK_SEQPACKET: | |
995 | case SOCK_STREAM: | |
996 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
997 | break; | |
998 | } | |
999 | ||
0c1bc5c6 GP |
1000 | chan->imtu = L2CAP_DEFAULT_MTU; |
1001 | chan->omtu = 0; | |
bb58f747 | 1002 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 1003 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 1004 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 1005 | } else { |
0c1bc5c6 | 1006 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 1007 | } |
47d1ec61 GP |
1008 | chan->max_tx = L2CAP_DEFAULT_MAX_TX; |
1009 | chan->fcs = L2CAP_FCS_CRC16; | |
1010 | chan->tx_win = L2CAP_DEFAULT_TX_WINDOW; | |
6b3c7104 | 1011 | chan->tx_win_max = L2CAP_DEFAULT_TX_WINDOW; |
4343478f | 1012 | chan->sec_level = BT_SECURITY_LOW; |
d57b0e8b | 1013 | chan->flags = 0; |
15770b1a | 1014 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
bb58f747 GP |
1015 | } |
1016 | ||
1017 | /* Default config options */ | |
0c1bc5c6 | 1018 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
1019 | |
1020 | chan->data = sk; | |
1021 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
1022 | } |
1023 | ||
1024 | static struct proto l2cap_proto = { | |
1025 | .name = "L2CAP", | |
1026 | .owner = THIS_MODULE, | |
1027 | .obj_size = sizeof(struct l2cap_pinfo) | |
1028 | }; | |
1029 | ||
80808e43 | 1030 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
bb58f747 GP |
1031 | { |
1032 | struct sock *sk; | |
dc50a06d | 1033 | struct l2cap_chan *chan; |
bb58f747 GP |
1034 | |
1035 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
1036 | if (!sk) | |
1037 | return NULL; | |
1038 | ||
1039 | sock_init_data(sock, sk); | |
1040 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1041 | ||
1042 | sk->sk_destruct = l2cap_sock_destruct; | |
ba13ccd9 | 1043 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
bb58f747 GP |
1044 | |
1045 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1046 | ||
1047 | sk->sk_protocol = proto; | |
1048 | sk->sk_state = BT_OPEN; | |
1049 | ||
dc50a06d GP |
1050 | chan = l2cap_chan_create(sk); |
1051 | if (!chan) { | |
1052 | l2cap_sock_kill(sk); | |
1053 | return NULL; | |
1054 | } | |
1055 | ||
1056 | l2cap_pi(sk)->chan = chan; | |
1057 | ||
bb58f747 GP |
1058 | return sk; |
1059 | } | |
1060 | ||
1061 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1062 | int kern) | |
1063 | { | |
1064 | struct sock *sk; | |
1065 | ||
1066 | BT_DBG("sock %p", sock); | |
1067 | ||
1068 | sock->state = SS_UNCONNECTED; | |
1069 | ||
1070 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
1071 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) | |
1072 | return -ESOCKTNOSUPPORT; | |
1073 | ||
1074 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1075 | return -EPERM; | |
1076 | ||
1077 | sock->ops = &l2cap_sock_ops; | |
1078 | ||
1079 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1080 | if (!sk) | |
1081 | return -ENOMEM; | |
1082 | ||
1083 | l2cap_sock_init(sk, NULL); | |
1084 | return 0; | |
1085 | } | |
1086 | ||
cf2f90f5 | 1087 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1088 | .family = PF_BLUETOOTH, |
1089 | .owner = THIS_MODULE, | |
1090 | .release = l2cap_sock_release, | |
1091 | .bind = l2cap_sock_bind, | |
1092 | .connect = l2cap_sock_connect, | |
1093 | .listen = l2cap_sock_listen, | |
1094 | .accept = l2cap_sock_accept, | |
1095 | .getname = l2cap_sock_getname, | |
1096 | .sendmsg = l2cap_sock_sendmsg, | |
1097 | .recvmsg = l2cap_sock_recvmsg, | |
1098 | .poll = bt_sock_poll, | |
1099 | .ioctl = bt_sock_ioctl, | |
1100 | .mmap = sock_no_mmap, | |
1101 | .socketpair = sock_no_socketpair, | |
1102 | .shutdown = l2cap_sock_shutdown, | |
1103 | .setsockopt = l2cap_sock_setsockopt, | |
1104 | .getsockopt = l2cap_sock_getsockopt | |
1105 | }; | |
1106 | ||
bb58f747 GP |
1107 | static const struct net_proto_family l2cap_sock_family_ops = { |
1108 | .family = PF_BLUETOOTH, | |
1109 | .owner = THIS_MODULE, | |
1110 | .create = l2cap_sock_create, | |
1111 | }; | |
1112 | ||
1113 | int __init l2cap_init_sockets(void) | |
1114 | { | |
e2174ca4 | 1115 | int err; |
bb58f747 | 1116 | |
e2174ca4 GP |
1117 | err = proto_register(&l2cap_proto, 0); |
1118 | if (err < 0) | |
1119 | return err; | |
bb58f747 | 1120 | |
e2174ca4 GP |
1121 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
1122 | if (err < 0) | |
1123 | goto error; | |
bb58f747 | 1124 | |
e2174ca4 | 1125 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1126 | |
e2174ca4 | 1127 | return 0; |
bb58f747 GP |
1128 | |
1129 | error: | |
e2174ca4 GP |
1130 | BT_ERR("L2CAP socket registration failed"); |
1131 | proto_unregister(&l2cap_proto); | |
1132 | return err; | |
bb58f747 GP |
1133 | } |
1134 | ||
1135 | void l2cap_cleanup_sockets(void) | |
1136 | { | |
e2174ca4 GP |
1137 | if (bt_sock_unregister(BTPROTO_L2CAP) < 0) |
1138 | BT_ERR("L2CAP socket unregistration failed"); | |
bb58f747 | 1139 | |
e2174ca4 | 1140 | proto_unregister(&l2cap_proto); |
bb58f747 | 1141 | } |