]>
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 | ||
9149761a | 30 | #include <linux/module.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> |
ac4b7236 MH |
36 | |
37 | #include "smp.h" | |
bb58f747 | 38 | |
9149761a JH |
39 | bool enable_lecoc; |
40 | ||
5b28d95c MY |
41 | static struct bt_sock_list l2cap_sk_list = { |
42 | .lock = __RW_LOCK_UNLOCKED(l2cap_sk_list.lock) | |
43 | }; | |
44 | ||
cf2f90f5 | 45 | static const struct proto_ops l2cap_sock_ops; |
80808e43 | 46 | static void l2cap_sock_init(struct sock *sk, struct sock *parent); |
2d792818 GP |
47 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, |
48 | int proto, gfp_t prio); | |
cf2f90f5 | 49 | |
b3916db3 DH |
50 | bool l2cap_is_socket(struct socket *sock) |
51 | { | |
52 | return sock && sock->ops == &l2cap_sock_ops; | |
53 | } | |
54 | EXPORT_SYMBOL(l2cap_is_socket); | |
55 | ||
4946096d JH |
56 | static int l2cap_validate_bredr_psm(u16 psm) |
57 | { | |
58 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
59 | if ((psm & 0x0101) != 0x0001) | |
60 | return -EINVAL; | |
61 | ||
62 | /* Restrict usage of well-known PSMs */ | |
63 | if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) | |
64 | return -EACCES; | |
65 | ||
66 | return 0; | |
67 | } | |
68 | ||
69 | static int l2cap_validate_le_psm(u16 psm) | |
70 | { | |
71 | /* Valid LE_PSM ranges are defined only until 0x00ff */ | |
72 | if (psm > 0x00ff) | |
73 | return -EINVAL; | |
74 | ||
75 | /* Restrict fixed, SIG assigned PSM values to CAP_NET_BIND_SERVICE */ | |
76 | if (psm <= 0x007f && !capable(CAP_NET_BIND_SERVICE)) | |
77 | return -EACCES; | |
78 | ||
79 | return 0; | |
80 | } | |
81 | ||
af6bcd82 GP |
82 | static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) |
83 | { | |
84 | struct sock *sk = sock->sk; | |
4343478f | 85 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
86 | struct sockaddr_l2 la; |
87 | int len, err = 0; | |
88 | ||
89 | BT_DBG("sk %p", sk); | |
90 | ||
91 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
92 | return -EINVAL; | |
93 | ||
94 | memset(&la, 0, sizeof(la)); | |
95 | len = min_t(unsigned int, sizeof(la), alen); | |
96 | memcpy(&la, addr, len); | |
97 | ||
b62f328b | 98 | if (la.l2_cid && la.l2_psm) |
af6bcd82 GP |
99 | return -EINVAL; |
100 | ||
80c1a2e7 JH |
101 | if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) |
102 | return -EINVAL; | |
103 | ||
bfe4655f | 104 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
9149761a | 105 | if (!enable_lecoc && la.l2_psm) |
bfe4655f JH |
106 | return -EINVAL; |
107 | /* We only allow ATT user space socket */ | |
9149761a JH |
108 | if (la.l2_cid && |
109 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) | |
bfe4655f JH |
110 | return -EINVAL; |
111 | } | |
112 | ||
af6bcd82 GP |
113 | lock_sock(sk); |
114 | ||
115 | if (sk->sk_state != BT_OPEN) { | |
116 | err = -EBADFD; | |
117 | goto done; | |
118 | } | |
119 | ||
120 | if (la.l2_psm) { | |
121 | __u16 psm = __le16_to_cpu(la.l2_psm); | |
122 | ||
4946096d JH |
123 | if (la.l2_bdaddr_type == BDADDR_BREDR) |
124 | err = l2cap_validate_bredr_psm(psm); | |
125 | else | |
126 | err = l2cap_validate_le_psm(psm); | |
af6bcd82 | 127 | |
4946096d | 128 | if (err) |
af6bcd82 | 129 | goto done; |
af6bcd82 GP |
130 | } |
131 | ||
9e4425ff | 132 | if (la.l2_cid) |
6e4aff10 | 133 | err = l2cap_add_scid(chan, __le16_to_cpu(la.l2_cid)); |
9e4425ff GP |
134 | else |
135 | err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); | |
af6bcd82 | 136 | |
9e4425ff GP |
137 | if (err < 0) |
138 | goto done; | |
af6bcd82 | 139 | |
6a974b50 | 140 | switch (chan->chan_type) { |
3124b843 MH |
141 | case L2CAP_CHAN_CONN_LESS: |
142 | if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_3DSP) | |
143 | chan->sec_level = BT_SECURITY_SDP; | |
144 | break; | |
6a974b50 MH |
145 | case L2CAP_CHAN_CONN_ORIENTED: |
146 | if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_SDP || | |
147 | __le16_to_cpu(la.l2_psm) == L2CAP_PSM_RFCOMM) | |
148 | chan->sec_level = BT_SECURITY_SDP; | |
149 | break; | |
cb6ca8e1 JH |
150 | case L2CAP_CHAN_RAW: |
151 | chan->sec_level = BT_SECURITY_SDP; | |
152 | break; | |
6a974b50 | 153 | } |
b62f328b | 154 | |
7eafc59e | 155 | bacpy(&chan->src, &la.l2_bdaddr); |
4f1654e0 | 156 | chan->src_type = la.l2_bdaddr_type; |
89bc500e | 157 | |
38319713 | 158 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
0ce43ce6 | 159 | chan->mode = L2CAP_MODE_LE_FLOWCTL; |
38319713 | 160 | |
89bc500e | 161 | chan->state = BT_BOUND; |
9e4425ff | 162 | sk->sk_state = BT_BOUND; |
af6bcd82 GP |
163 | |
164 | done: | |
165 | release_sock(sk); | |
166 | return err; | |
167 | } | |
168 | ||
2d792818 GP |
169 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, |
170 | int alen, int flags) | |
4e34c50b GP |
171 | { |
172 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 173 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
4e34c50b GP |
174 | struct sockaddr_l2 la; |
175 | int len, err = 0; | |
176 | ||
177 | BT_DBG("sk %p", sk); | |
178 | ||
179 | if (!addr || alen < sizeof(addr->sa_family) || | |
180 | addr->sa_family != AF_BLUETOOTH) | |
181 | return -EINVAL; | |
182 | ||
183 | memset(&la, 0, sizeof(la)); | |
184 | len = min_t(unsigned int, sizeof(la), alen); | |
185 | memcpy(&la, addr, len); | |
186 | ||
acd7d370 | 187 | if (la.l2_cid && la.l2_psm) |
4e34c50b GP |
188 | return -EINVAL; |
189 | ||
80c1a2e7 JH |
190 | if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) |
191 | return -EINVAL; | |
192 | ||
eb622495 JH |
193 | /* Check that the socket wasn't bound to something that |
194 | * conflicts with the address given to connect(). If chan->src | |
195 | * is BDADDR_ANY it means bind() was never used, in which case | |
196 | * chan->src_type and la.l2_bdaddr_type do not need to match. | |
197 | */ | |
198 | if (chan->src_type == BDADDR_BREDR && bacmp(&chan->src, BDADDR_ANY) && | |
199 | bdaddr_type_is_le(la.l2_bdaddr_type)) { | |
200 | /* Old user space versions will try to incorrectly bind | |
201 | * the ATT socket using BDADDR_BREDR. We need to accept | |
202 | * this and fix up the source address type only when | |
203 | * both the source CID and destination CID indicate | |
204 | * ATT. Anything else is an invalid combination. | |
205 | */ | |
206 | if (chan->scid != L2CAP_CID_ATT || | |
207 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) | |
208 | return -EINVAL; | |
209 | ||
210 | /* We don't have the hdev available here to make a | |
211 | * better decision on random vs public, but since all | |
212 | * user space versions that exhibit this issue anyway do | |
213 | * not support random local addresses assuming public | |
214 | * here is good enough. | |
215 | */ | |
216 | chan->src_type = BDADDR_LE_PUBLIC; | |
217 | } | |
1f209383 JH |
218 | |
219 | if (chan->src_type != BDADDR_BREDR && la.l2_bdaddr_type == BDADDR_BREDR) | |
220 | return -EINVAL; | |
221 | ||
bfe4655f | 222 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
9149761a | 223 | if (!enable_lecoc && la.l2_psm) |
bfe4655f JH |
224 | return -EINVAL; |
225 | /* We only allow ATT user space socket */ | |
9149761a JH |
226 | if (la.l2_cid && |
227 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) | |
bfe4655f JH |
228 | return -EINVAL; |
229 | } | |
230 | ||
38319713 | 231 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
0ce43ce6 | 232 | chan->mode = L2CAP_MODE_LE_FLOWCTL; |
38319713 | 233 | |
6e4aff10 | 234 | err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid), |
8e9f9892 | 235 | &la.l2_bdaddr, la.l2_bdaddr_type); |
4e34c50b | 236 | if (err) |
b3fb611e | 237 | return err; |
4e34c50b | 238 | |
6be36555 AE |
239 | lock_sock(sk); |
240 | ||
4e34c50b | 241 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
2d792818 | 242 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
b3fb611e AE |
243 | |
244 | release_sock(sk); | |
245 | ||
4e34c50b GP |
246 | return err; |
247 | } | |
248 | ||
af6bcd82 GP |
249 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
250 | { | |
251 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 252 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
253 | int err = 0; |
254 | ||
255 | BT_DBG("sk %p backlog %d", sk, backlog); | |
256 | ||
257 | lock_sock(sk); | |
258 | ||
6b3af733 | 259 | if (sk->sk_state != BT_BOUND) { |
af6bcd82 GP |
260 | err = -EBADFD; |
261 | goto done; | |
262 | } | |
263 | ||
6b3af733 MH |
264 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM) { |
265 | err = -EINVAL; | |
266 | goto done; | |
267 | } | |
268 | ||
0c1bc5c6 | 269 | switch (chan->mode) { |
af6bcd82 | 270 | case L2CAP_MODE_BASIC: |
38319713 | 271 | case L2CAP_MODE_LE_FLOWCTL: |
af6bcd82 GP |
272 | break; |
273 | case L2CAP_MODE_ERTM: | |
274 | case L2CAP_MODE_STREAMING: | |
275 | if (!disable_ertm) | |
276 | break; | |
277 | /* fall through */ | |
278 | default: | |
279 | err = -ENOTSUPP; | |
280 | goto done; | |
281 | } | |
282 | ||
af6bcd82 GP |
283 | sk->sk_max_ack_backlog = backlog; |
284 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
285 | |
286 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
287 | sk->sk_state = BT_LISTEN; |
288 | ||
289 | done: | |
290 | release_sock(sk); | |
291 | return err; | |
292 | } | |
293 | ||
2d792818 GP |
294 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, |
295 | int flags) | |
c47b7c72 GP |
296 | { |
297 | DECLARE_WAITQUEUE(wait, current); | |
298 | struct sock *sk = sock->sk, *nsk; | |
299 | long timeo; | |
300 | int err = 0; | |
301 | ||
302 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
303 | ||
c47b7c72 GP |
304 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
305 | ||
306 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
307 | ||
308 | /* Wait for an incoming connection. (wake-one). */ | |
309 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 310 | while (1) { |
c47b7c72 | 311 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
312 | |
313 | if (sk->sk_state != BT_LISTEN) { | |
314 | err = -EBADFD; | |
c47b7c72 GP |
315 | break; |
316 | } | |
317 | ||
f9a3c20a PH |
318 | nsk = bt_accept_dequeue(sk, newsock); |
319 | if (nsk) | |
320 | break; | |
c47b7c72 | 321 | |
f9a3c20a PH |
322 | if (!timeo) { |
323 | err = -EAGAIN; | |
c47b7c72 GP |
324 | break; |
325 | } | |
326 | ||
327 | if (signal_pending(current)) { | |
328 | err = sock_intr_errno(timeo); | |
329 | break; | |
330 | } | |
f9a3c20a PH |
331 | |
332 | release_sock(sk); | |
333 | timeo = schedule_timeout(timeo); | |
334 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 335 | } |
f9a3c20a | 336 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
337 | remove_wait_queue(sk_sleep(sk), &wait); |
338 | ||
339 | if (err) | |
340 | goto done; | |
341 | ||
342 | newsock->state = SS_CONNECTED; | |
343 | ||
344 | BT_DBG("new socket %p", nsk); | |
345 | ||
346 | done: | |
347 | release_sock(sk); | |
348 | return err; | |
349 | } | |
350 | ||
2d792818 GP |
351 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, |
352 | int *len, int peer) | |
d7175d55 GP |
353 | { |
354 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
355 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 356 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
357 | |
358 | BT_DBG("sock %p, sk %p", sock, sk); | |
359 | ||
792039c7 | 360 | memset(la, 0, sizeof(struct sockaddr_l2)); |
d7175d55 GP |
361 | addr->sa_family = AF_BLUETOOTH; |
362 | *len = sizeof(struct sockaddr_l2); | |
363 | ||
364 | if (peer) { | |
fe4128e0 | 365 | la->l2_psm = chan->psm; |
7eafc59e | 366 | bacpy(&la->l2_bdaddr, &chan->dst); |
fe4128e0 | 367 | la->l2_cid = cpu_to_le16(chan->dcid); |
4f1654e0 | 368 | la->l2_bdaddr_type = chan->dst_type; |
d7175d55 | 369 | } else { |
0c1bc5c6 | 370 | la->l2_psm = chan->sport; |
7eafc59e | 371 | bacpy(&la->l2_bdaddr, &chan->src); |
fe4128e0 | 372 | la->l2_cid = cpu_to_le16(chan->scid); |
4f1654e0 | 373 | la->l2_bdaddr_type = chan->src_type; |
d7175d55 GP |
374 | } |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
2d792818 GP |
379 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, |
380 | char __user *optval, int __user *optlen) | |
99f4808d GP |
381 | { |
382 | struct sock *sk = sock->sk; | |
4343478f | 383 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
384 | struct l2cap_options opts; |
385 | struct l2cap_conninfo cinfo; | |
386 | int len, err = 0; | |
387 | u32 opt; | |
388 | ||
389 | BT_DBG("sk %p", sk); | |
390 | ||
391 | if (get_user(len, optlen)) | |
392 | return -EFAULT; | |
393 | ||
394 | lock_sock(sk); | |
395 | ||
396 | switch (optname) { | |
397 | case L2CAP_OPTIONS: | |
64b4f8dc JH |
398 | /* LE sockets should use BT_SNDMTU/BT_RCVMTU, but since |
399 | * legacy ATT code depends on getsockopt for | |
400 | * L2CAP_OPTIONS we need to let this pass. | |
401 | */ | |
402 | if (bdaddr_type_is_le(chan->src_type) && | |
403 | chan->scid != L2CAP_CID_ATT) { | |
404 | err = -EINVAL; | |
405 | break; | |
406 | } | |
407 | ||
e3fb592b | 408 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
409 | opts.imtu = chan->imtu; |
410 | opts.omtu = chan->omtu; | |
411 | opts.flush_to = chan->flush_to; | |
412 | opts.mode = chan->mode; | |
47d1ec61 GP |
413 | opts.fcs = chan->fcs; |
414 | opts.max_tx = chan->max_tx; | |
6327eb98 | 415 | opts.txwin_size = chan->tx_win; |
99f4808d GP |
416 | |
417 | len = min_t(unsigned int, len, sizeof(opts)); | |
418 | if (copy_to_user(optval, (char *) &opts, len)) | |
419 | err = -EFAULT; | |
420 | ||
421 | break; | |
422 | ||
423 | case L2CAP_LM: | |
4343478f | 424 | switch (chan->sec_level) { |
99f4808d GP |
425 | case BT_SECURITY_LOW: |
426 | opt = L2CAP_LM_AUTH; | |
427 | break; | |
428 | case BT_SECURITY_MEDIUM: | |
429 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
430 | break; | |
431 | case BT_SECURITY_HIGH: | |
432 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
2d792818 | 433 | L2CAP_LM_SECURE; |
99f4808d GP |
434 | break; |
435 | default: | |
436 | opt = 0; | |
437 | break; | |
438 | } | |
439 | ||
43bd0f32 | 440 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
441 | opt |= L2CAP_LM_MASTER; |
442 | ||
ecf61bdb | 443 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
444 | opt |= L2CAP_LM_RELIABLE; |
445 | ||
446 | if (put_user(opt, (u32 __user *) optval)) | |
447 | err = -EFAULT; | |
448 | break; | |
449 | ||
450 | case L2CAP_CONNINFO: | |
451 | if (sk->sk_state != BT_CONNECTED && | |
c5daa683 GP |
452 | !(sk->sk_state == BT_CONNECT2 && |
453 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
99f4808d GP |
454 | err = -ENOTCONN; |
455 | break; | |
456 | } | |
457 | ||
8d03e971 | 458 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
459 | cinfo.hci_handle = chan->conn->hcon->handle; |
460 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
461 | |
462 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
463 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
464 | err = -EFAULT; | |
465 | ||
466 | break; | |
467 | ||
468 | default: | |
469 | err = -ENOPROTOOPT; | |
470 | break; | |
471 | } | |
472 | ||
473 | release_sock(sk); | |
474 | return err; | |
475 | } | |
476 | ||
2d792818 GP |
477 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, |
478 | char __user *optval, int __user *optlen) | |
99f4808d GP |
479 | { |
480 | struct sock *sk = sock->sk; | |
4343478f | 481 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 482 | struct bt_security sec; |
14b12d0b | 483 | struct bt_power pwr; |
99f4808d GP |
484 | int len, err = 0; |
485 | ||
486 | BT_DBG("sk %p", sk); | |
487 | ||
488 | if (level == SOL_L2CAP) | |
489 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
490 | ||
491 | if (level != SOL_BLUETOOTH) | |
492 | return -ENOPROTOOPT; | |
493 | ||
494 | if (get_user(len, optlen)) | |
495 | return -EFAULT; | |
496 | ||
497 | lock_sock(sk); | |
498 | ||
499 | switch (optname) { | |
500 | case BT_SECURITY: | |
715ec005 | 501 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
2d792818 | 502 | chan->chan_type != L2CAP_CHAN_RAW) { |
99f4808d GP |
503 | err = -EINVAL; |
504 | break; | |
505 | } | |
506 | ||
8f360119 | 507 | memset(&sec, 0, sizeof(sec)); |
85e34368 | 508 | if (chan->conn) { |
c6585a4d | 509 | sec.level = chan->conn->hcon->sec_level; |
99f4808d | 510 | |
85e34368 AE |
511 | if (sk->sk_state == BT_CONNECTED) |
512 | sec.key_size = chan->conn->hcon->enc_key_size; | |
513 | } else { | |
514 | sec.level = chan->sec_level; | |
515 | } | |
8f360119 | 516 | |
99f4808d GP |
517 | len = min_t(unsigned int, len, sizeof(sec)); |
518 | if (copy_to_user(optval, (char *) &sec, len)) | |
519 | err = -EFAULT; | |
520 | ||
521 | break; | |
522 | ||
523 | case BT_DEFER_SETUP: | |
524 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
525 | err = -EINVAL; | |
526 | break; | |
527 | } | |
528 | ||
c5daa683 GP |
529 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
530 | (u32 __user *) optval)) | |
99f4808d GP |
531 | err = -EFAULT; |
532 | ||
533 | break; | |
534 | ||
535 | case BT_FLUSHABLE: | |
d57b0e8b | 536 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
2d792818 | 537 | (u32 __user *) optval)) |
99f4808d GP |
538 | err = -EFAULT; |
539 | ||
540 | break; | |
541 | ||
14b12d0b JG |
542 | case BT_POWER: |
543 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
2d792818 | 544 | && sk->sk_type != SOCK_RAW) { |
14b12d0b JG |
545 | err = -EINVAL; |
546 | break; | |
547 | } | |
548 | ||
15770b1a | 549 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
550 | |
551 | len = min_t(unsigned int, len, sizeof(pwr)); | |
552 | if (copy_to_user(optval, (char *) &pwr, len)) | |
553 | err = -EFAULT; | |
554 | ||
555 | break; | |
556 | ||
2ea66482 | 557 | case BT_CHANNEL_POLICY: |
2ea66482 MM |
558 | if (put_user(chan->chan_policy, (u32 __user *) optval)) |
559 | err = -EFAULT; | |
560 | break; | |
561 | ||
1f435424 JH |
562 | case BT_SNDMTU: |
563 | if (!enable_lecoc) { | |
564 | err = -EPROTONOSUPPORT; | |
565 | break; | |
566 | } | |
567 | ||
568 | if (!bdaddr_type_is_le(chan->src_type)) { | |
569 | err = -EINVAL; | |
570 | break; | |
571 | } | |
572 | ||
573 | if (sk->sk_state != BT_CONNECTED) { | |
574 | err = -ENOTCONN; | |
575 | break; | |
576 | } | |
577 | ||
578 | if (put_user(chan->omtu, (u16 __user *) optval)) | |
579 | err = -EFAULT; | |
580 | break; | |
581 | ||
582 | case BT_RCVMTU: | |
583 | if (!enable_lecoc) { | |
584 | err = -EPROTONOSUPPORT; | |
585 | break; | |
586 | } | |
587 | ||
588 | if (!bdaddr_type_is_le(chan->src_type)) { | |
589 | err = -EINVAL; | |
590 | break; | |
591 | } | |
592 | ||
593 | if (put_user(chan->imtu, (u16 __user *) optval)) | |
594 | err = -EFAULT; | |
595 | break; | |
596 | ||
99f4808d GP |
597 | default: |
598 | err = -ENOPROTOOPT; | |
599 | break; | |
600 | } | |
601 | ||
602 | release_sock(sk); | |
603 | return err; | |
604 | } | |
605 | ||
682877c3 AG |
606 | static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu) |
607 | { | |
608 | switch (chan->scid) { | |
073d1cf3 | 609 | case L2CAP_CID_ATT: |
8c3a4f00 | 610 | if (mtu < L2CAP_LE_MIN_MTU) |
682877c3 AG |
611 | return false; |
612 | break; | |
613 | ||
614 | default: | |
615 | if (mtu < L2CAP_DEFAULT_MIN_MTU) | |
616 | return false; | |
617 | } | |
618 | ||
619 | return true; | |
620 | } | |
621 | ||
2d792818 GP |
622 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, |
623 | char __user *optval, unsigned int optlen) | |
33575df7 GP |
624 | { |
625 | struct sock *sk = sock->sk; | |
b4450035 | 626 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
627 | struct l2cap_options opts; |
628 | int len, err = 0; | |
629 | u32 opt; | |
630 | ||
631 | BT_DBG("sk %p", sk); | |
632 | ||
633 | lock_sock(sk); | |
634 | ||
635 | switch (optname) { | |
636 | case L2CAP_OPTIONS: | |
64b4f8dc JH |
637 | if (bdaddr_type_is_le(chan->src_type)) { |
638 | err = -EINVAL; | |
639 | break; | |
640 | } | |
641 | ||
33575df7 GP |
642 | if (sk->sk_state == BT_CONNECTED) { |
643 | err = -EINVAL; | |
644 | break; | |
645 | } | |
646 | ||
0c1bc5c6 GP |
647 | opts.imtu = chan->imtu; |
648 | opts.omtu = chan->omtu; | |
649 | opts.flush_to = chan->flush_to; | |
650 | opts.mode = chan->mode; | |
47d1ec61 GP |
651 | opts.fcs = chan->fcs; |
652 | opts.max_tx = chan->max_tx; | |
6327eb98 | 653 | opts.txwin_size = chan->tx_win; |
33575df7 GP |
654 | |
655 | len = min_t(unsigned int, sizeof(opts), optlen); | |
656 | if (copy_from_user((char *) &opts, optval, len)) { | |
657 | err = -EFAULT; | |
658 | break; | |
659 | } | |
660 | ||
6327eb98 | 661 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
33575df7 GP |
662 | err = -EINVAL; |
663 | break; | |
664 | } | |
665 | ||
682877c3 AG |
666 | if (!l2cap_valid_mtu(chan, opts.imtu)) { |
667 | err = -EINVAL; | |
668 | break; | |
669 | } | |
670 | ||
0c1bc5c6 GP |
671 | chan->mode = opts.mode; |
672 | switch (chan->mode) { | |
38319713 JH |
673 | case L2CAP_MODE_LE_FLOWCTL: |
674 | break; | |
33575df7 | 675 | case L2CAP_MODE_BASIC: |
c1360a1c | 676 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
677 | break; |
678 | case L2CAP_MODE_ERTM: | |
679 | case L2CAP_MODE_STREAMING: | |
680 | if (!disable_ertm) | |
681 | break; | |
682 | /* fall through */ | |
683 | default: | |
684 | err = -EINVAL; | |
685 | break; | |
686 | } | |
687 | ||
0c1bc5c6 GP |
688 | chan->imtu = opts.imtu; |
689 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
690 | chan->fcs = opts.fcs; |
691 | chan->max_tx = opts.max_tx; | |
6327eb98 | 692 | chan->tx_win = opts.txwin_size; |
12d59781 | 693 | chan->flush_to = opts.flush_to; |
33575df7 GP |
694 | break; |
695 | ||
696 | case L2CAP_LM: | |
697 | if (get_user(opt, (u32 __user *) optval)) { | |
698 | err = -EFAULT; | |
699 | break; | |
700 | } | |
701 | ||
702 | if (opt & L2CAP_LM_AUTH) | |
4343478f | 703 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 704 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 705 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 706 | if (opt & L2CAP_LM_SECURE) |
4343478f | 707 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 708 | |
43bd0f32 AE |
709 | if (opt & L2CAP_LM_MASTER) |
710 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
711 | else | |
712 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
713 | |
714 | if (opt & L2CAP_LM_RELIABLE) | |
715 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
716 | else | |
717 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
718 | break; |
719 | ||
720 | default: | |
721 | err = -ENOPROTOOPT; | |
722 | break; | |
723 | } | |
724 | ||
725 | release_sock(sk); | |
726 | return err; | |
727 | } | |
728 | ||
2d792818 GP |
729 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, |
730 | char __user *optval, unsigned int optlen) | |
33575df7 GP |
731 | { |
732 | struct sock *sk = sock->sk; | |
4343478f | 733 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 734 | struct bt_security sec; |
14b12d0b | 735 | struct bt_power pwr; |
f1cb9af5 | 736 | struct l2cap_conn *conn; |
33575df7 GP |
737 | int len, err = 0; |
738 | u32 opt; | |
739 | ||
740 | BT_DBG("sk %p", sk); | |
741 | ||
742 | if (level == SOL_L2CAP) | |
743 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
744 | ||
745 | if (level != SOL_BLUETOOTH) | |
746 | return -ENOPROTOOPT; | |
747 | ||
748 | lock_sock(sk); | |
749 | ||
750 | switch (optname) { | |
751 | case BT_SECURITY: | |
715ec005 | 752 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
2d792818 | 753 | chan->chan_type != L2CAP_CHAN_RAW) { |
33575df7 GP |
754 | err = -EINVAL; |
755 | break; | |
756 | } | |
757 | ||
758 | sec.level = BT_SECURITY_LOW; | |
759 | ||
760 | len = min_t(unsigned int, sizeof(sec), optlen); | |
761 | if (copy_from_user((char *) &sec, optval, len)) { | |
762 | err = -EFAULT; | |
763 | break; | |
764 | } | |
765 | ||
766 | if (sec.level < BT_SECURITY_LOW || | |
2d792818 | 767 | sec.level > BT_SECURITY_HIGH) { |
33575df7 GP |
768 | err = -EINVAL; |
769 | break; | |
770 | } | |
771 | ||
4343478f | 772 | chan->sec_level = sec.level; |
f1cb9af5 | 773 | |
0bee1d60 GP |
774 | if (!chan->conn) |
775 | break; | |
776 | ||
f1cb9af5 | 777 | conn = chan->conn; |
0bee1d60 GP |
778 | |
779 | /*change security for LE channels */ | |
073d1cf3 | 780 | if (chan->scid == L2CAP_CID_ATT) { |
f1cb9af5 VCG |
781 | if (!conn->hcon->out) { |
782 | err = -EINVAL; | |
783 | break; | |
784 | } | |
785 | ||
cc110922 | 786 | if (smp_conn_security(conn->hcon, sec.level)) |
f1cb9af5 | 787 | break; |
f1cb9af5 | 788 | sk->sk_state = BT_CONFIG; |
3542b854 | 789 | chan->state = BT_CONFIG; |
0bee1d60 | 790 | |
a7d7723a GP |
791 | /* or for ACL link */ |
792 | } else if ((sk->sk_state == BT_CONNECT2 && | |
2d792818 | 793 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) || |
a7d7723a GP |
794 | sk->sk_state == BT_CONNECTED) { |
795 | if (!l2cap_chan_check_security(chan)) | |
c5daa683 | 796 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); |
a7d7723a GP |
797 | else |
798 | sk->sk_state_change(sk); | |
0bee1d60 GP |
799 | } else { |
800 | err = -EINVAL; | |
f1cb9af5 | 801 | } |
33575df7 GP |
802 | break; |
803 | ||
804 | case BT_DEFER_SETUP: | |
805 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
806 | err = -EINVAL; | |
807 | break; | |
808 | } | |
809 | ||
810 | if (get_user(opt, (u32 __user *) optval)) { | |
811 | err = -EFAULT; | |
812 | break; | |
813 | } | |
814 | ||
bdc25783 | 815 | if (opt) { |
c5daa683 | 816 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
bdc25783 MH |
817 | set_bit(FLAG_DEFER_SETUP, &chan->flags); |
818 | } else { | |
c5daa683 | 819 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
bdc25783 MH |
820 | clear_bit(FLAG_DEFER_SETUP, &chan->flags); |
821 | } | |
33575df7 GP |
822 | break; |
823 | ||
824 | case BT_FLUSHABLE: | |
825 | if (get_user(opt, (u32 __user *) optval)) { | |
826 | err = -EFAULT; | |
827 | break; | |
828 | } | |
829 | ||
830 | if (opt > BT_FLUSHABLE_ON) { | |
831 | err = -EINVAL; | |
832 | break; | |
833 | } | |
834 | ||
835 | if (opt == BT_FLUSHABLE_OFF) { | |
c1f23a2b | 836 | conn = chan->conn; |
25985edc | 837 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
838 | No Flush support in the LM */ |
839 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
840 | err = -EINVAL; | |
841 | break; | |
842 | } | |
843 | } | |
844 | ||
d57b0e8b AE |
845 | if (opt) |
846 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
847 | else | |
848 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
849 | break; |
850 | ||
14b12d0b JG |
851 | case BT_POWER: |
852 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
2d792818 | 853 | chan->chan_type != L2CAP_CHAN_RAW) { |
14b12d0b JG |
854 | err = -EINVAL; |
855 | break; | |
856 | } | |
857 | ||
858 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
859 | ||
860 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
861 | if (copy_from_user((char *) &pwr, optval, len)) { | |
862 | err = -EFAULT; | |
863 | break; | |
864 | } | |
15770b1a AE |
865 | |
866 | if (pwr.force_active) | |
867 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
868 | else | |
869 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
870 | break; |
871 | ||
2ea66482 | 872 | case BT_CHANNEL_POLICY: |
2ea66482 MM |
873 | if (get_user(opt, (u32 __user *) optval)) { |
874 | err = -EFAULT; | |
875 | break; | |
876 | } | |
877 | ||
878 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { | |
879 | err = -EINVAL; | |
880 | break; | |
881 | } | |
882 | ||
883 | if (chan->mode != L2CAP_MODE_ERTM && | |
2d792818 | 884 | chan->mode != L2CAP_MODE_STREAMING) { |
2ea66482 MM |
885 | err = -EOPNOTSUPP; |
886 | break; | |
887 | } | |
888 | ||
889 | chan->chan_policy = (u8) opt; | |
3f7a56c4 MM |
890 | |
891 | if (sk->sk_state == BT_CONNECTED && | |
892 | chan->move_role == L2CAP_MOVE_ROLE_NONE) | |
893 | l2cap_move_start(chan); | |
894 | ||
14b12d0b JG |
895 | break; |
896 | ||
1f435424 JH |
897 | case BT_SNDMTU: |
898 | if (!enable_lecoc) { | |
899 | err = -EPROTONOSUPPORT; | |
900 | break; | |
901 | } | |
902 | ||
903 | if (!bdaddr_type_is_le(chan->src_type)) { | |
904 | err = -EINVAL; | |
905 | break; | |
906 | } | |
907 | ||
908 | /* Setting is not supported as it's the remote side that | |
909 | * decides this. | |
910 | */ | |
911 | err = -EPERM; | |
912 | break; | |
913 | ||
914 | case BT_RCVMTU: | |
915 | if (!enable_lecoc) { | |
916 | err = -EPROTONOSUPPORT; | |
917 | break; | |
918 | } | |
919 | ||
920 | if (!bdaddr_type_is_le(chan->src_type)) { | |
921 | err = -EINVAL; | |
922 | break; | |
923 | } | |
924 | ||
925 | if (sk->sk_state == BT_CONNECTED) { | |
926 | err = -EISCONN; | |
927 | break; | |
928 | } | |
929 | ||
930 | if (get_user(opt, (u32 __user *) optval)) { | |
931 | err = -EFAULT; | |
932 | break; | |
933 | } | |
934 | ||
935 | chan->imtu = opt; | |
936 | break; | |
937 | ||
33575df7 GP |
938 | default: |
939 | err = -ENOPROTOOPT; | |
940 | break; | |
941 | } | |
942 | ||
943 | release_sock(sk); | |
944 | return err; | |
945 | } | |
fd83ccdb | 946 | |
2d792818 GP |
947 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
948 | struct msghdr *msg, size_t len) | |
fd83ccdb GP |
949 | { |
950 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 951 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
952 | int err; |
953 | ||
954 | BT_DBG("sock %p, sk %p", sock, sk); | |
955 | ||
956 | err = sock_error(sk); | |
957 | if (err) | |
958 | return err; | |
959 | ||
960 | if (msg->msg_flags & MSG_OOB) | |
961 | return -EOPNOTSUPP; | |
962 | ||
a6a5568c | 963 | if (sk->sk_state != BT_CONNECTED) |
9a91a04a | 964 | return -ENOTCONN; |
fd83ccdb | 965 | |
e793dcf0 JH |
966 | lock_sock(sk); |
967 | err = bt_sock_wait_ready(sk, msg->msg_flags); | |
968 | release_sock(sk); | |
969 | if (err) | |
970 | return err; | |
971 | ||
a6a5568c | 972 | l2cap_chan_lock(chan); |
5e59b791 | 973 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
a6a5568c | 974 | l2cap_chan_unlock(chan); |
fd83ccdb | 975 | |
fd83ccdb GP |
976 | return err; |
977 | } | |
33575df7 | 978 | |
2d792818 GP |
979 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
980 | struct msghdr *msg, size_t len, int flags) | |
68983259 GP |
981 | { |
982 | struct sock *sk = sock->sk; | |
e328140f MM |
983 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
984 | int err; | |
68983259 GP |
985 | |
986 | lock_sock(sk); | |
987 | ||
c5daa683 GP |
988 | if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, |
989 | &bt_sk(sk)->flags)) { | |
38319713 JH |
990 | if (bdaddr_type_is_le(pi->chan->src_type)) { |
991 | sk->sk_state = BT_CONNECTED; | |
992 | pi->chan->state = BT_CONNECTED; | |
993 | __l2cap_le_connect_rsp_defer(pi->chan); | |
994 | } else { | |
995 | sk->sk_state = BT_CONFIG; | |
996 | pi->chan->state = BT_CONFIG; | |
997 | __l2cap_connect_rsp_defer(pi->chan); | |
998 | } | |
8c1d787b | 999 | |
970871bc JH |
1000 | err = 0; |
1001 | goto done; | |
68983259 GP |
1002 | } |
1003 | ||
1004 | release_sock(sk); | |
1005 | ||
1006 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
1007 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
1008 | else | |
1009 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
1010 | ||
1011 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
1012 | return err; | |
1013 | ||
1014 | /* Attempt to put pending rx data in the socket buffer */ | |
1015 | ||
1016 | lock_sock(sk); | |
1017 | ||
1018 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
1019 | goto done; | |
1020 | ||
1021 | if (pi->rx_busy_skb) { | |
1022 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
1023 | pi->rx_busy_skb = NULL; | |
1024 | else | |
1025 | goto done; | |
1026 | } | |
1027 | ||
1028 | /* Restore data flow when half of the receive buffer is | |
1029 | * available. This avoids resending large numbers of | |
1030 | * frames. | |
1031 | */ | |
1032 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
1033 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 1034 | |
e328140f MM |
1035 | done: |
1036 | release_sock(sk); | |
1037 | return err; | |
68983259 GP |
1038 | } |
1039 | ||
05fc1576 GP |
1040 | /* Kill socket (only if zapped and orphan) |
1041 | * Must be called on unlocked socket. | |
1042 | */ | |
ba3bd0ee | 1043 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
1044 | { |
1045 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
1046 | return; | |
1047 | ||
e05dcc32 | 1048 | BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state)); |
05fc1576 GP |
1049 | |
1050 | /* Kill poor orphan */ | |
6ff5abbf | 1051 | |
4af66c69 | 1052 | l2cap_chan_put(l2cap_pi(sk)->chan); |
05fc1576 GP |
1053 | sock_set_flag(sk, SOCK_DEAD); |
1054 | sock_put(sk); | |
1055 | } | |
1056 | ||
dc25306b GP |
1057 | static int __l2cap_wait_ack(struct sock *sk) |
1058 | { | |
1059 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; | |
1060 | DECLARE_WAITQUEUE(wait, current); | |
1061 | int err = 0; | |
1062 | int timeo = HZ/5; | |
1063 | ||
1064 | add_wait_queue(sk_sleep(sk), &wait); | |
1065 | set_current_state(TASK_INTERRUPTIBLE); | |
1066 | while (chan->unacked_frames > 0 && chan->conn) { | |
1067 | if (!timeo) | |
1068 | timeo = HZ/5; | |
1069 | ||
1070 | if (signal_pending(current)) { | |
1071 | err = sock_intr_errno(timeo); | |
1072 | break; | |
1073 | } | |
1074 | ||
1075 | release_sock(sk); | |
1076 | timeo = schedule_timeout(timeo); | |
1077 | lock_sock(sk); | |
1078 | set_current_state(TASK_INTERRUPTIBLE); | |
1079 | ||
1080 | err = sock_error(sk); | |
1081 | if (err) | |
1082 | break; | |
1083 | } | |
1084 | set_current_state(TASK_RUNNING); | |
1085 | remove_wait_queue(sk_sleep(sk), &wait); | |
1086 | return err; | |
1087 | } | |
1088 | ||
dcba0dba GP |
1089 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
1090 | { | |
1091 | struct sock *sk = sock->sk; | |
7ddb6e0f | 1092 | struct l2cap_chan *chan; |
3df91ea2 | 1093 | struct l2cap_conn *conn; |
dcba0dba GP |
1094 | int err = 0; |
1095 | ||
1096 | BT_DBG("sock %p, sk %p", sock, sk); | |
1097 | ||
1098 | if (!sk) | |
1099 | return 0; | |
1100 | ||
7ddb6e0f | 1101 | chan = l2cap_pi(sk)->chan; |
3df91ea2 AE |
1102 | conn = chan->conn; |
1103 | ||
1104 | if (conn) | |
1105 | mutex_lock(&conn->chan_lock); | |
7ddb6e0f | 1106 | |
6be36555 | 1107 | l2cap_chan_lock(chan); |
dcba0dba | 1108 | lock_sock(sk); |
6be36555 | 1109 | |
dcba0dba | 1110 | if (!sk->sk_shutdown) { |
0c1bc5c6 | 1111 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
1112 | err = __l2cap_wait_ack(sk); |
1113 | ||
1114 | sk->sk_shutdown = SHUTDOWN_MASK; | |
3df91ea2 | 1115 | |
6be36555 | 1116 | release_sock(sk); |
0f852724 | 1117 | l2cap_chan_close(chan, 0); |
6be36555 | 1118 | lock_sock(sk); |
dcba0dba GP |
1119 | |
1120 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
1121 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
2d792818 | 1122 | sk->sk_lingertime); |
dcba0dba GP |
1123 | } |
1124 | ||
1125 | if (!err && sk->sk_err) | |
1126 | err = -sk->sk_err; | |
1127 | ||
1128 | release_sock(sk); | |
6be36555 | 1129 | l2cap_chan_unlock(chan); |
3df91ea2 AE |
1130 | |
1131 | if (conn) | |
1132 | mutex_unlock(&conn->chan_lock); | |
1133 | ||
dcba0dba GP |
1134 | return err; |
1135 | } | |
1136 | ||
554f05bb GP |
1137 | static int l2cap_sock_release(struct socket *sock) |
1138 | { | |
1139 | struct sock *sk = sock->sk; | |
1140 | int err; | |
1141 | ||
1142 | BT_DBG("sock %p, sk %p", sock, sk); | |
1143 | ||
1144 | if (!sk) | |
1145 | return 0; | |
1146 | ||
5b28d95c MY |
1147 | bt_sock_unlink(&l2cap_sk_list, sk); |
1148 | ||
554f05bb GP |
1149 | err = l2cap_sock_shutdown(sock, 2); |
1150 | ||
1151 | sock_orphan(sk); | |
1152 | l2cap_sock_kill(sk); | |
1153 | return err; | |
1154 | } | |
1155 | ||
c0df7f6e AE |
1156 | static void l2cap_sock_cleanup_listen(struct sock *parent) |
1157 | { | |
1158 | struct sock *sk; | |
1159 | ||
1160 | BT_DBG("parent %p", parent); | |
1161 | ||
1162 | /* Close not yet accepted channels */ | |
1163 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
1164 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; | |
1165 | ||
1166 | l2cap_chan_lock(chan); | |
1167 | __clear_chan_timer(chan); | |
1168 | l2cap_chan_close(chan, ECONNRESET); | |
1169 | l2cap_chan_unlock(chan); | |
1170 | ||
1171 | l2cap_sock_kill(sk); | |
1172 | } | |
1173 | } | |
1174 | ||
80b98027 | 1175 | static struct l2cap_chan *l2cap_sock_new_connection_cb(struct l2cap_chan *chan) |
80808e43 | 1176 | { |
80b98027 | 1177 | struct sock *sk, *parent = chan->data; |
80808e43 | 1178 | |
8ffb9290 GP |
1179 | lock_sock(parent); |
1180 | ||
53826692 GP |
1181 | /* Check for backlog size */ |
1182 | if (sk_acceptq_is_full(parent)) { | |
1183 | BT_DBG("backlog full %d", parent->sk_ack_backlog); | |
1184 | return NULL; | |
1185 | } | |
1186 | ||
80808e43 | 1187 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, |
2d792818 | 1188 | GFP_ATOMIC); |
80808e43 GP |
1189 | if (!sk) |
1190 | return NULL; | |
1191 | ||
d22015aa OP |
1192 | bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); |
1193 | ||
80808e43 GP |
1194 | l2cap_sock_init(sk, parent); |
1195 | ||
644912e1 GP |
1196 | bt_accept_enqueue(parent, sk); |
1197 | ||
8ffb9290 GP |
1198 | release_sock(parent); |
1199 | ||
80808e43 GP |
1200 | return l2cap_pi(sk)->chan; |
1201 | } | |
1202 | ||
80b98027 | 1203 | static int l2cap_sock_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb) |
23070494 | 1204 | { |
80b98027 | 1205 | struct sock *sk = chan->data; |
84b34d98 | 1206 | int err; |
e328140f | 1207 | |
6be36555 AE |
1208 | lock_sock(sk); |
1209 | ||
84b34d98 | 1210 | if (l2cap_pi(sk)->rx_busy_skb) { |
6be36555 AE |
1211 | err = -ENOMEM; |
1212 | goto done; | |
1213 | } | |
e328140f MM |
1214 | |
1215 | err = sock_queue_rcv_skb(sk, skb); | |
1216 | ||
1217 | /* For ERTM, handle one skb that doesn't fit into the recv | |
1218 | * buffer. This is important to do because the data frames | |
1219 | * have already been acked, so the skb cannot be discarded. | |
1220 | * | |
1221 | * Notify the l2cap core that the buffer is full, so the | |
1222 | * LOCAL_BUSY state is entered and no more frames are | |
1223 | * acked and reassembled until there is buffer space | |
1224 | * available. | |
1225 | */ | |
84b34d98 MH |
1226 | if (err < 0 && chan->mode == L2CAP_MODE_ERTM) { |
1227 | l2cap_pi(sk)->rx_busy_skb = skb; | |
1228 | l2cap_chan_busy(chan, 1); | |
e328140f MM |
1229 | err = 0; |
1230 | } | |
23070494 | 1231 | |
6be36555 AE |
1232 | done: |
1233 | release_sock(sk); | |
1234 | ||
e328140f | 1235 | return err; |
23070494 GP |
1236 | } |
1237 | ||
80b98027 | 1238 | static void l2cap_sock_close_cb(struct l2cap_chan *chan) |
ba3bd0ee | 1239 | { |
80b98027 | 1240 | struct sock *sk = chan->data; |
ba3bd0ee GP |
1241 | |
1242 | l2cap_sock_kill(sk); | |
1243 | } | |
1244 | ||
c0df7f6e AE |
1245 | static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err) |
1246 | { | |
1247 | struct sock *sk = chan->data; | |
1248 | struct sock *parent; | |
1249 | ||
1250 | lock_sock(sk); | |
1251 | ||
1252 | parent = bt_sk(sk)->parent; | |
1253 | ||
1254 | sock_set_flag(sk, SOCK_ZAPPED); | |
1255 | ||
1256 | switch (chan->state) { | |
1257 | case BT_OPEN: | |
1258 | case BT_BOUND: | |
1259 | case BT_CLOSED: | |
1260 | break; | |
1261 | case BT_LISTEN: | |
1262 | l2cap_sock_cleanup_listen(sk); | |
1263 | sk->sk_state = BT_CLOSED; | |
1264 | chan->state = BT_CLOSED; | |
1265 | ||
1266 | break; | |
1267 | default: | |
1268 | sk->sk_state = BT_CLOSED; | |
1269 | chan->state = BT_CLOSED; | |
1270 | ||
1271 | sk->sk_err = err; | |
1272 | ||
1273 | if (parent) { | |
1274 | bt_accept_unlink(sk); | |
1275 | parent->sk_data_ready(parent, 0); | |
1276 | } else { | |
1277 | sk->sk_state_change(sk); | |
1278 | } | |
1279 | ||
1280 | break; | |
1281 | } | |
1282 | ||
1283 | release_sock(sk); | |
1284 | } | |
1285 | ||
53f52121 GP |
1286 | static void l2cap_sock_state_change_cb(struct l2cap_chan *chan, int state, |
1287 | int err) | |
89bc500e | 1288 | { |
80b98027 | 1289 | struct sock *sk = chan->data; |
89bc500e GP |
1290 | |
1291 | sk->sk_state = state; | |
53f52121 GP |
1292 | |
1293 | if (err) | |
1294 | sk->sk_err = err; | |
89bc500e GP |
1295 | } |
1296 | ||
2f7719ce | 1297 | static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, |
90338947 | 1298 | unsigned long len, int nb) |
2f7719ce | 1299 | { |
0f2c6153 | 1300 | struct sock *sk = chan->data; |
90338947 GP |
1301 | struct sk_buff *skb; |
1302 | int err; | |
1303 | ||
a6a5568c | 1304 | l2cap_chan_unlock(chan); |
0f2c6153 | 1305 | skb = bt_skb_send_alloc(sk, len, nb, &err); |
a6a5568c MM |
1306 | l2cap_chan_lock(chan); |
1307 | ||
90338947 GP |
1308 | if (!skb) |
1309 | return ERR_PTR(err); | |
2f7719ce | 1310 | |
0e790c64 GP |
1311 | bt_cb(skb)->chan = chan; |
1312 | ||
90338947 | 1313 | return skb; |
2f7719ce AE |
1314 | } |
1315 | ||
54a59aa2 AE |
1316 | static void l2cap_sock_ready_cb(struct l2cap_chan *chan) |
1317 | { | |
1318 | struct sock *sk = chan->data; | |
1319 | struct sock *parent; | |
1320 | ||
1321 | lock_sock(sk); | |
1322 | ||
1323 | parent = bt_sk(sk)->parent; | |
1324 | ||
1325 | BT_DBG("sk %p, parent %p", sk, parent); | |
1326 | ||
1327 | sk->sk_state = BT_CONNECTED; | |
1328 | sk->sk_state_change(sk); | |
1329 | ||
1330 | if (parent) | |
1331 | parent->sk_data_ready(parent, 0); | |
1332 | ||
1333 | release_sock(sk); | |
1334 | } | |
1335 | ||
2dc4e510 GP |
1336 | static void l2cap_sock_defer_cb(struct l2cap_chan *chan) |
1337 | { | |
acdcabf5 GP |
1338 | struct sock *parent, *sk = chan->data; |
1339 | ||
1340 | lock_sock(sk); | |
2dc4e510 | 1341 | |
acdcabf5 | 1342 | parent = bt_sk(sk)->parent; |
2dc4e510 GP |
1343 | if (parent) |
1344 | parent->sk_data_ready(parent, 0); | |
acdcabf5 GP |
1345 | |
1346 | release_sock(sk); | |
2dc4e510 GP |
1347 | } |
1348 | ||
d97c899b MH |
1349 | static void l2cap_sock_resume_cb(struct l2cap_chan *chan) |
1350 | { | |
1351 | struct sock *sk = chan->data; | |
1352 | ||
1353 | clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); | |
1354 | sk->sk_state_change(sk); | |
1355 | } | |
1356 | ||
5ec1bbe5 GP |
1357 | static void l2cap_sock_set_shutdown_cb(struct l2cap_chan *chan) |
1358 | { | |
1359 | struct sock *sk = chan->data; | |
1360 | ||
1361 | lock_sock(sk); | |
1362 | sk->sk_shutdown = SHUTDOWN_MASK; | |
1363 | release_sock(sk); | |
1364 | } | |
1365 | ||
8d836d71 GP |
1366 | static long l2cap_sock_get_sndtimeo_cb(struct l2cap_chan *chan) |
1367 | { | |
1368 | struct sock *sk = chan->data; | |
1369 | ||
1370 | return sk->sk_sndtimeo; | |
1371 | } | |
1372 | ||
837776f7 JH |
1373 | static void l2cap_sock_suspend_cb(struct l2cap_chan *chan) |
1374 | { | |
1375 | struct sock *sk = chan->data; | |
1376 | ||
1377 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); | |
1378 | sk->sk_state_change(sk); | |
1379 | } | |
1380 | ||
80808e43 GP |
1381 | static struct l2cap_ops l2cap_chan_ops = { |
1382 | .name = "L2CAP Socket Interface", | |
1383 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 1384 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 1385 | .close = l2cap_sock_close_cb, |
c0df7f6e | 1386 | .teardown = l2cap_sock_teardown_cb, |
89bc500e | 1387 | .state_change = l2cap_sock_state_change_cb, |
54a59aa2 | 1388 | .ready = l2cap_sock_ready_cb, |
2dc4e510 | 1389 | .defer = l2cap_sock_defer_cb, |
d97c899b | 1390 | .resume = l2cap_sock_resume_cb, |
837776f7 | 1391 | .suspend = l2cap_sock_suspend_cb, |
5ec1bbe5 | 1392 | .set_shutdown = l2cap_sock_set_shutdown_cb, |
8d836d71 | 1393 | .get_sndtimeo = l2cap_sock_get_sndtimeo_cb, |
2f7719ce | 1394 | .alloc_skb = l2cap_sock_alloc_skb_cb, |
80808e43 GP |
1395 | }; |
1396 | ||
bb58f747 GP |
1397 | static void l2cap_sock_destruct(struct sock *sk) |
1398 | { | |
1399 | BT_DBG("sk %p", sk); | |
1400 | ||
23d3a869 SL |
1401 | if (l2cap_pi(sk)->chan) |
1402 | l2cap_chan_put(l2cap_pi(sk)->chan); | |
84b34d98 | 1403 | |
e328140f MM |
1404 | if (l2cap_pi(sk)->rx_busy_skb) { |
1405 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
1406 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
1407 | } | |
1408 | ||
bb58f747 GP |
1409 | skb_queue_purge(&sk->sk_receive_queue); |
1410 | skb_queue_purge(&sk->sk_write_queue); | |
1411 | } | |
1412 | ||
2edf870d MH |
1413 | static void l2cap_skb_msg_name(struct sk_buff *skb, void *msg_name, |
1414 | int *msg_namelen) | |
1415 | { | |
342dfc30 | 1416 | DECLARE_SOCKADDR(struct sockaddr_l2 *, la, msg_name); |
2edf870d MH |
1417 | |
1418 | memset(la, 0, sizeof(struct sockaddr_l2)); | |
1419 | la->l2_family = AF_BLUETOOTH; | |
1420 | la->l2_psm = bt_cb(skb)->psm; | |
1421 | bacpy(&la->l2_bdaddr, &bt_cb(skb)->bdaddr); | |
1422 | ||
1423 | *msg_namelen = sizeof(struct sockaddr_l2); | |
1424 | } | |
1425 | ||
80808e43 | 1426 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 | 1427 | { |
84b34d98 | 1428 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
bb58f747 GP |
1429 | |
1430 | BT_DBG("sk %p", sk); | |
1431 | ||
1432 | if (parent) { | |
b4450035 GP |
1433 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
1434 | ||
bb58f747 | 1435 | sk->sk_type = parent->sk_type; |
c5daa683 | 1436 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
bb58f747 | 1437 | |
715ec005 | 1438 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
1439 | chan->imtu = pchan->imtu; |
1440 | chan->omtu = pchan->omtu; | |
b4450035 | 1441 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 1442 | chan->mode = pchan->mode; |
47d1ec61 GP |
1443 | chan->fcs = pchan->fcs; |
1444 | chan->max_tx = pchan->max_tx; | |
1445 | chan->tx_win = pchan->tx_win; | |
6b3c7104 | 1446 | chan->tx_win_max = pchan->tx_win_max; |
4343478f | 1447 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 1448 | chan->flags = pchan->flags; |
0cd75f7e JH |
1449 | chan->tx_credits = pchan->tx_credits; |
1450 | chan->rx_credits = pchan->rx_credits; | |
6230c9b4 PM |
1451 | |
1452 | security_sk_clone(parent, sk); | |
bb58f747 | 1453 | } else { |
715ec005 GP |
1454 | switch (sk->sk_type) { |
1455 | case SOCK_RAW: | |
1456 | chan->chan_type = L2CAP_CHAN_RAW; | |
1457 | break; | |
1458 | case SOCK_DGRAM: | |
1459 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
2edf870d | 1460 | bt_sk(sk)->skb_msg_name = l2cap_skb_msg_name; |
715ec005 GP |
1461 | break; |
1462 | case SOCK_SEQPACKET: | |
1463 | case SOCK_STREAM: | |
1464 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
1465 | break; | |
1466 | } | |
1467 | ||
0c1bc5c6 GP |
1468 | chan->imtu = L2CAP_DEFAULT_MTU; |
1469 | chan->omtu = 0; | |
bb58f747 | 1470 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 1471 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 1472 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 1473 | } else { |
0c1bc5c6 | 1474 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 1475 | } |
bd4b1653 AE |
1476 | |
1477 | l2cap_chan_set_defaults(chan); | |
bb58f747 GP |
1478 | } |
1479 | ||
1480 | /* Default config options */ | |
0c1bc5c6 | 1481 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
1482 | |
1483 | chan->data = sk; | |
1484 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
1485 | } |
1486 | ||
1487 | static struct proto l2cap_proto = { | |
1488 | .name = "L2CAP", | |
1489 | .owner = THIS_MODULE, | |
1490 | .obj_size = sizeof(struct l2cap_pinfo) | |
1491 | }; | |
1492 | ||
2d792818 GP |
1493 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, |
1494 | int proto, gfp_t prio) | |
bb58f747 GP |
1495 | { |
1496 | struct sock *sk; | |
dc50a06d | 1497 | struct l2cap_chan *chan; |
bb58f747 GP |
1498 | |
1499 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
1500 | if (!sk) | |
1501 | return NULL; | |
1502 | ||
1503 | sock_init_data(sock, sk); | |
1504 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1505 | ||
1506 | sk->sk_destruct = l2cap_sock_destruct; | |
ba13ccd9 | 1507 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
bb58f747 GP |
1508 | |
1509 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1510 | ||
1511 | sk->sk_protocol = proto; | |
1512 | sk->sk_state = BT_OPEN; | |
1513 | ||
eef1d9b6 | 1514 | chan = l2cap_chan_create(); |
dc50a06d | 1515 | if (!chan) { |
49dfbb91 | 1516 | sk_free(sk); |
dc50a06d GP |
1517 | return NULL; |
1518 | } | |
1519 | ||
61d6ef3e MM |
1520 | l2cap_chan_hold(chan); |
1521 | ||
dc50a06d GP |
1522 | l2cap_pi(sk)->chan = chan; |
1523 | ||
bb58f747 GP |
1524 | return sk; |
1525 | } | |
1526 | ||
1527 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1528 | int kern) | |
1529 | { | |
1530 | struct sock *sk; | |
1531 | ||
1532 | BT_DBG("sock %p", sock); | |
1533 | ||
1534 | sock->state = SS_UNCONNECTED; | |
1535 | ||
1536 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
2d792818 | 1537 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) |
bb58f747 GP |
1538 | return -ESOCKTNOSUPPORT; |
1539 | ||
1540 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1541 | return -EPERM; | |
1542 | ||
1543 | sock->ops = &l2cap_sock_ops; | |
1544 | ||
1545 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1546 | if (!sk) | |
1547 | return -ENOMEM; | |
1548 | ||
1549 | l2cap_sock_init(sk, NULL); | |
5b28d95c | 1550 | bt_sock_link(&l2cap_sk_list, sk); |
bb58f747 GP |
1551 | return 0; |
1552 | } | |
1553 | ||
cf2f90f5 | 1554 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1555 | .family = PF_BLUETOOTH, |
1556 | .owner = THIS_MODULE, | |
1557 | .release = l2cap_sock_release, | |
1558 | .bind = l2cap_sock_bind, | |
1559 | .connect = l2cap_sock_connect, | |
1560 | .listen = l2cap_sock_listen, | |
1561 | .accept = l2cap_sock_accept, | |
1562 | .getname = l2cap_sock_getname, | |
1563 | .sendmsg = l2cap_sock_sendmsg, | |
1564 | .recvmsg = l2cap_sock_recvmsg, | |
1565 | .poll = bt_sock_poll, | |
1566 | .ioctl = bt_sock_ioctl, | |
1567 | .mmap = sock_no_mmap, | |
1568 | .socketpair = sock_no_socketpair, | |
1569 | .shutdown = l2cap_sock_shutdown, | |
1570 | .setsockopt = l2cap_sock_setsockopt, | |
1571 | .getsockopt = l2cap_sock_getsockopt | |
1572 | }; | |
1573 | ||
bb58f747 GP |
1574 | static const struct net_proto_family l2cap_sock_family_ops = { |
1575 | .family = PF_BLUETOOTH, | |
1576 | .owner = THIS_MODULE, | |
1577 | .create = l2cap_sock_create, | |
1578 | }; | |
1579 | ||
1580 | int __init l2cap_init_sockets(void) | |
1581 | { | |
e2174ca4 | 1582 | int err; |
bb58f747 | 1583 | |
e2174ca4 GP |
1584 | err = proto_register(&l2cap_proto, 0); |
1585 | if (err < 0) | |
1586 | return err; | |
bb58f747 | 1587 | |
e2174ca4 | 1588 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
5b28d95c MY |
1589 | if (err < 0) { |
1590 | BT_ERR("L2CAP socket registration failed"); | |
e2174ca4 | 1591 | goto error; |
5b28d95c MY |
1592 | } |
1593 | ||
b0316615 | 1594 | err = bt_procfs_init(&init_net, "l2cap", &l2cap_sk_list, |
2d792818 | 1595 | NULL); |
5b28d95c MY |
1596 | if (err < 0) { |
1597 | BT_ERR("Failed to create L2CAP proc file"); | |
1598 | bt_sock_unregister(BTPROTO_L2CAP); | |
1599 | goto error; | |
1600 | } | |
bb58f747 | 1601 | |
e2174ca4 | 1602 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1603 | |
e2174ca4 | 1604 | return 0; |
bb58f747 GP |
1605 | |
1606 | error: | |
e2174ca4 GP |
1607 | proto_unregister(&l2cap_proto); |
1608 | return err; | |
bb58f747 GP |
1609 | } |
1610 | ||
1611 | void l2cap_cleanup_sockets(void) | |
1612 | { | |
5b28d95c | 1613 | bt_procfs_cleanup(&init_net, "l2cap"); |
5e9d7f86 | 1614 | bt_sock_unregister(BTPROTO_L2CAP); |
e2174ca4 | 1615 | proto_unregister(&l2cap_proto); |
bb58f747 | 1616 | } |
9149761a JH |
1617 | |
1618 | module_param(enable_lecoc, bool, 0644); | |
1619 | MODULE_PARM_DESC(enable_lecoc, "Enable support for LE CoC"); |