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Commit | Line | Data |
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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; | |
150 | } | |
b62f328b | 151 | |
7eafc59e | 152 | bacpy(&chan->src, &la.l2_bdaddr); |
4f1654e0 | 153 | chan->src_type = la.l2_bdaddr_type; |
89bc500e | 154 | |
38319713 JH |
155 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
156 | l2cap_le_flowctl_init(chan); | |
157 | ||
89bc500e | 158 | chan->state = BT_BOUND; |
9e4425ff | 159 | sk->sk_state = BT_BOUND; |
af6bcd82 GP |
160 | |
161 | done: | |
162 | release_sock(sk); | |
163 | return err; | |
164 | } | |
165 | ||
2d792818 GP |
166 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, |
167 | int alen, int flags) | |
4e34c50b GP |
168 | { |
169 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 170 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
4e34c50b GP |
171 | struct sockaddr_l2 la; |
172 | int len, err = 0; | |
173 | ||
174 | BT_DBG("sk %p", sk); | |
175 | ||
176 | if (!addr || alen < sizeof(addr->sa_family) || | |
177 | addr->sa_family != AF_BLUETOOTH) | |
178 | return -EINVAL; | |
179 | ||
180 | memset(&la, 0, sizeof(la)); | |
181 | len = min_t(unsigned int, sizeof(la), alen); | |
182 | memcpy(&la, addr, len); | |
183 | ||
acd7d370 | 184 | if (la.l2_cid && la.l2_psm) |
4e34c50b GP |
185 | return -EINVAL; |
186 | ||
80c1a2e7 JH |
187 | if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) |
188 | return -EINVAL; | |
189 | ||
eb622495 JH |
190 | /* Check that the socket wasn't bound to something that |
191 | * conflicts with the address given to connect(). If chan->src | |
192 | * is BDADDR_ANY it means bind() was never used, in which case | |
193 | * chan->src_type and la.l2_bdaddr_type do not need to match. | |
194 | */ | |
195 | if (chan->src_type == BDADDR_BREDR && bacmp(&chan->src, BDADDR_ANY) && | |
196 | bdaddr_type_is_le(la.l2_bdaddr_type)) { | |
197 | /* Old user space versions will try to incorrectly bind | |
198 | * the ATT socket using BDADDR_BREDR. We need to accept | |
199 | * this and fix up the source address type only when | |
200 | * both the source CID and destination CID indicate | |
201 | * ATT. Anything else is an invalid combination. | |
202 | */ | |
203 | if (chan->scid != L2CAP_CID_ATT || | |
204 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) | |
205 | return -EINVAL; | |
206 | ||
207 | /* We don't have the hdev available here to make a | |
208 | * better decision on random vs public, but since all | |
209 | * user space versions that exhibit this issue anyway do | |
210 | * not support random local addresses assuming public | |
211 | * here is good enough. | |
212 | */ | |
213 | chan->src_type = BDADDR_LE_PUBLIC; | |
214 | } | |
1f209383 JH |
215 | |
216 | if (chan->src_type != BDADDR_BREDR && la.l2_bdaddr_type == BDADDR_BREDR) | |
217 | return -EINVAL; | |
218 | ||
bfe4655f | 219 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
9149761a | 220 | if (!enable_lecoc && la.l2_psm) |
bfe4655f JH |
221 | return -EINVAL; |
222 | /* We only allow ATT user space socket */ | |
9149761a JH |
223 | if (la.l2_cid && |
224 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) | |
bfe4655f JH |
225 | return -EINVAL; |
226 | } | |
227 | ||
38319713 JH |
228 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
229 | l2cap_le_flowctl_init(chan); | |
230 | ||
6e4aff10 | 231 | err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid), |
8e9f9892 | 232 | &la.l2_bdaddr, la.l2_bdaddr_type); |
4e34c50b | 233 | if (err) |
b3fb611e | 234 | return err; |
4e34c50b | 235 | |
6be36555 AE |
236 | lock_sock(sk); |
237 | ||
4e34c50b | 238 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
2d792818 | 239 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
b3fb611e AE |
240 | |
241 | release_sock(sk); | |
242 | ||
4e34c50b GP |
243 | return err; |
244 | } | |
245 | ||
af6bcd82 GP |
246 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
247 | { | |
248 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 249 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
250 | int err = 0; |
251 | ||
252 | BT_DBG("sk %p backlog %d", sk, backlog); | |
253 | ||
254 | lock_sock(sk); | |
255 | ||
6b3af733 | 256 | if (sk->sk_state != BT_BOUND) { |
af6bcd82 GP |
257 | err = -EBADFD; |
258 | goto done; | |
259 | } | |
260 | ||
6b3af733 MH |
261 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM) { |
262 | err = -EINVAL; | |
263 | goto done; | |
264 | } | |
265 | ||
0c1bc5c6 | 266 | switch (chan->mode) { |
af6bcd82 | 267 | case L2CAP_MODE_BASIC: |
38319713 | 268 | case L2CAP_MODE_LE_FLOWCTL: |
af6bcd82 GP |
269 | break; |
270 | case L2CAP_MODE_ERTM: | |
271 | case L2CAP_MODE_STREAMING: | |
272 | if (!disable_ertm) | |
273 | break; | |
274 | /* fall through */ | |
275 | default: | |
276 | err = -ENOTSUPP; | |
277 | goto done; | |
278 | } | |
279 | ||
af6bcd82 GP |
280 | sk->sk_max_ack_backlog = backlog; |
281 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
282 | |
283 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
284 | sk->sk_state = BT_LISTEN; |
285 | ||
286 | done: | |
287 | release_sock(sk); | |
288 | return err; | |
289 | } | |
290 | ||
2d792818 GP |
291 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, |
292 | int flags) | |
c47b7c72 GP |
293 | { |
294 | DECLARE_WAITQUEUE(wait, current); | |
295 | struct sock *sk = sock->sk, *nsk; | |
296 | long timeo; | |
297 | int err = 0; | |
298 | ||
299 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
300 | ||
c47b7c72 GP |
301 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
302 | ||
303 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
304 | ||
305 | /* Wait for an incoming connection. (wake-one). */ | |
306 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 307 | while (1) { |
c47b7c72 | 308 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
309 | |
310 | if (sk->sk_state != BT_LISTEN) { | |
311 | err = -EBADFD; | |
c47b7c72 GP |
312 | break; |
313 | } | |
314 | ||
f9a3c20a PH |
315 | nsk = bt_accept_dequeue(sk, newsock); |
316 | if (nsk) | |
317 | break; | |
c47b7c72 | 318 | |
f9a3c20a PH |
319 | if (!timeo) { |
320 | err = -EAGAIN; | |
c47b7c72 GP |
321 | break; |
322 | } | |
323 | ||
324 | if (signal_pending(current)) { | |
325 | err = sock_intr_errno(timeo); | |
326 | break; | |
327 | } | |
f9a3c20a PH |
328 | |
329 | release_sock(sk); | |
330 | timeo = schedule_timeout(timeo); | |
331 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 332 | } |
f9a3c20a | 333 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
334 | remove_wait_queue(sk_sleep(sk), &wait); |
335 | ||
336 | if (err) | |
337 | goto done; | |
338 | ||
339 | newsock->state = SS_CONNECTED; | |
340 | ||
341 | BT_DBG("new socket %p", nsk); | |
342 | ||
343 | done: | |
344 | release_sock(sk); | |
345 | return err; | |
346 | } | |
347 | ||
2d792818 GP |
348 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, |
349 | int *len, int peer) | |
d7175d55 GP |
350 | { |
351 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
352 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 353 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
354 | |
355 | BT_DBG("sock %p, sk %p", sock, sk); | |
356 | ||
792039c7 | 357 | memset(la, 0, sizeof(struct sockaddr_l2)); |
d7175d55 GP |
358 | addr->sa_family = AF_BLUETOOTH; |
359 | *len = sizeof(struct sockaddr_l2); | |
360 | ||
361 | if (peer) { | |
fe4128e0 | 362 | la->l2_psm = chan->psm; |
7eafc59e | 363 | bacpy(&la->l2_bdaddr, &chan->dst); |
fe4128e0 | 364 | la->l2_cid = cpu_to_le16(chan->dcid); |
4f1654e0 | 365 | la->l2_bdaddr_type = chan->dst_type; |
d7175d55 | 366 | } else { |
0c1bc5c6 | 367 | la->l2_psm = chan->sport; |
7eafc59e | 368 | bacpy(&la->l2_bdaddr, &chan->src); |
fe4128e0 | 369 | la->l2_cid = cpu_to_le16(chan->scid); |
4f1654e0 | 370 | la->l2_bdaddr_type = chan->src_type; |
d7175d55 GP |
371 | } |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
2d792818 GP |
376 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, |
377 | char __user *optval, int __user *optlen) | |
99f4808d GP |
378 | { |
379 | struct sock *sk = sock->sk; | |
4343478f | 380 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
381 | struct l2cap_options opts; |
382 | struct l2cap_conninfo cinfo; | |
383 | int len, err = 0; | |
384 | u32 opt; | |
385 | ||
386 | BT_DBG("sk %p", sk); | |
387 | ||
388 | if (get_user(len, optlen)) | |
389 | return -EFAULT; | |
390 | ||
391 | lock_sock(sk); | |
392 | ||
393 | switch (optname) { | |
394 | case L2CAP_OPTIONS: | |
64b4f8dc JH |
395 | /* LE sockets should use BT_SNDMTU/BT_RCVMTU, but since |
396 | * legacy ATT code depends on getsockopt for | |
397 | * L2CAP_OPTIONS we need to let this pass. | |
398 | */ | |
399 | if (bdaddr_type_is_le(chan->src_type) && | |
400 | chan->scid != L2CAP_CID_ATT) { | |
401 | err = -EINVAL; | |
402 | break; | |
403 | } | |
404 | ||
e3fb592b | 405 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
406 | opts.imtu = chan->imtu; |
407 | opts.omtu = chan->omtu; | |
408 | opts.flush_to = chan->flush_to; | |
409 | opts.mode = chan->mode; | |
47d1ec61 GP |
410 | opts.fcs = chan->fcs; |
411 | opts.max_tx = chan->max_tx; | |
6327eb98 | 412 | opts.txwin_size = chan->tx_win; |
99f4808d GP |
413 | |
414 | len = min_t(unsigned int, len, sizeof(opts)); | |
415 | if (copy_to_user(optval, (char *) &opts, len)) | |
416 | err = -EFAULT; | |
417 | ||
418 | break; | |
419 | ||
420 | case L2CAP_LM: | |
4343478f | 421 | switch (chan->sec_level) { |
99f4808d GP |
422 | case BT_SECURITY_LOW: |
423 | opt = L2CAP_LM_AUTH; | |
424 | break; | |
425 | case BT_SECURITY_MEDIUM: | |
426 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
427 | break; | |
428 | case BT_SECURITY_HIGH: | |
429 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
2d792818 | 430 | L2CAP_LM_SECURE; |
99f4808d GP |
431 | break; |
432 | default: | |
433 | opt = 0; | |
434 | break; | |
435 | } | |
436 | ||
43bd0f32 | 437 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
438 | opt |= L2CAP_LM_MASTER; |
439 | ||
ecf61bdb | 440 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
441 | opt |= L2CAP_LM_RELIABLE; |
442 | ||
443 | if (put_user(opt, (u32 __user *) optval)) | |
444 | err = -EFAULT; | |
445 | break; | |
446 | ||
447 | case L2CAP_CONNINFO: | |
448 | if (sk->sk_state != BT_CONNECTED && | |
c5daa683 GP |
449 | !(sk->sk_state == BT_CONNECT2 && |
450 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
99f4808d GP |
451 | err = -ENOTCONN; |
452 | break; | |
453 | } | |
454 | ||
8d03e971 | 455 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
456 | cinfo.hci_handle = chan->conn->hcon->handle; |
457 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
458 | |
459 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
460 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
461 | err = -EFAULT; | |
462 | ||
463 | break; | |
464 | ||
465 | default: | |
466 | err = -ENOPROTOOPT; | |
467 | break; | |
468 | } | |
469 | ||
470 | release_sock(sk); | |
471 | return err; | |
472 | } | |
473 | ||
2d792818 GP |
474 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, |
475 | char __user *optval, int __user *optlen) | |
99f4808d GP |
476 | { |
477 | struct sock *sk = sock->sk; | |
4343478f | 478 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 479 | struct bt_security sec; |
14b12d0b | 480 | struct bt_power pwr; |
99f4808d GP |
481 | int len, err = 0; |
482 | ||
483 | BT_DBG("sk %p", sk); | |
484 | ||
485 | if (level == SOL_L2CAP) | |
486 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
487 | ||
488 | if (level != SOL_BLUETOOTH) | |
489 | return -ENOPROTOOPT; | |
490 | ||
491 | if (get_user(len, optlen)) | |
492 | return -EFAULT; | |
493 | ||
494 | lock_sock(sk); | |
495 | ||
496 | switch (optname) { | |
497 | case BT_SECURITY: | |
715ec005 | 498 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
2d792818 | 499 | chan->chan_type != L2CAP_CHAN_RAW) { |
99f4808d GP |
500 | err = -EINVAL; |
501 | break; | |
502 | } | |
503 | ||
8f360119 | 504 | memset(&sec, 0, sizeof(sec)); |
85e34368 | 505 | if (chan->conn) { |
c6585a4d | 506 | sec.level = chan->conn->hcon->sec_level; |
99f4808d | 507 | |
85e34368 AE |
508 | if (sk->sk_state == BT_CONNECTED) |
509 | sec.key_size = chan->conn->hcon->enc_key_size; | |
510 | } else { | |
511 | sec.level = chan->sec_level; | |
512 | } | |
8f360119 | 513 | |
99f4808d GP |
514 | len = min_t(unsigned int, len, sizeof(sec)); |
515 | if (copy_to_user(optval, (char *) &sec, len)) | |
516 | err = -EFAULT; | |
517 | ||
518 | break; | |
519 | ||
520 | case BT_DEFER_SETUP: | |
521 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
522 | err = -EINVAL; | |
523 | break; | |
524 | } | |
525 | ||
c5daa683 GP |
526 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
527 | (u32 __user *) optval)) | |
99f4808d GP |
528 | err = -EFAULT; |
529 | ||
530 | break; | |
531 | ||
532 | case BT_FLUSHABLE: | |
d57b0e8b | 533 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
2d792818 | 534 | (u32 __user *) optval)) |
99f4808d GP |
535 | err = -EFAULT; |
536 | ||
537 | break; | |
538 | ||
14b12d0b JG |
539 | case BT_POWER: |
540 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
2d792818 | 541 | && sk->sk_type != SOCK_RAW) { |
14b12d0b JG |
542 | err = -EINVAL; |
543 | break; | |
544 | } | |
545 | ||
15770b1a | 546 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
547 | |
548 | len = min_t(unsigned int, len, sizeof(pwr)); | |
549 | if (copy_to_user(optval, (char *) &pwr, len)) | |
550 | err = -EFAULT; | |
551 | ||
552 | break; | |
553 | ||
2ea66482 | 554 | case BT_CHANNEL_POLICY: |
2ea66482 MM |
555 | if (put_user(chan->chan_policy, (u32 __user *) optval)) |
556 | err = -EFAULT; | |
557 | break; | |
558 | ||
1f435424 JH |
559 | case BT_SNDMTU: |
560 | if (!enable_lecoc) { | |
561 | err = -EPROTONOSUPPORT; | |
562 | break; | |
563 | } | |
564 | ||
565 | if (!bdaddr_type_is_le(chan->src_type)) { | |
566 | err = -EINVAL; | |
567 | break; | |
568 | } | |
569 | ||
570 | if (sk->sk_state != BT_CONNECTED) { | |
571 | err = -ENOTCONN; | |
572 | break; | |
573 | } | |
574 | ||
575 | if (put_user(chan->omtu, (u16 __user *) optval)) | |
576 | err = -EFAULT; | |
577 | break; | |
578 | ||
579 | case BT_RCVMTU: | |
580 | if (!enable_lecoc) { | |
581 | err = -EPROTONOSUPPORT; | |
582 | break; | |
583 | } | |
584 | ||
585 | if (!bdaddr_type_is_le(chan->src_type)) { | |
586 | err = -EINVAL; | |
587 | break; | |
588 | } | |
589 | ||
590 | if (put_user(chan->imtu, (u16 __user *) optval)) | |
591 | err = -EFAULT; | |
592 | break; | |
593 | ||
99f4808d GP |
594 | default: |
595 | err = -ENOPROTOOPT; | |
596 | break; | |
597 | } | |
598 | ||
599 | release_sock(sk); | |
600 | return err; | |
601 | } | |
602 | ||
682877c3 AG |
603 | static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu) |
604 | { | |
605 | switch (chan->scid) { | |
073d1cf3 | 606 | case L2CAP_CID_ATT: |
8c3a4f00 | 607 | if (mtu < L2CAP_LE_MIN_MTU) |
682877c3 AG |
608 | return false; |
609 | break; | |
610 | ||
611 | default: | |
612 | if (mtu < L2CAP_DEFAULT_MIN_MTU) | |
613 | return false; | |
614 | } | |
615 | ||
616 | return true; | |
617 | } | |
618 | ||
2d792818 GP |
619 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, |
620 | char __user *optval, unsigned int optlen) | |
33575df7 GP |
621 | { |
622 | struct sock *sk = sock->sk; | |
b4450035 | 623 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
624 | struct l2cap_options opts; |
625 | int len, err = 0; | |
626 | u32 opt; | |
627 | ||
628 | BT_DBG("sk %p", sk); | |
629 | ||
630 | lock_sock(sk); | |
631 | ||
632 | switch (optname) { | |
633 | case L2CAP_OPTIONS: | |
64b4f8dc JH |
634 | if (bdaddr_type_is_le(chan->src_type)) { |
635 | err = -EINVAL; | |
636 | break; | |
637 | } | |
638 | ||
33575df7 GP |
639 | if (sk->sk_state == BT_CONNECTED) { |
640 | err = -EINVAL; | |
641 | break; | |
642 | } | |
643 | ||
0c1bc5c6 GP |
644 | opts.imtu = chan->imtu; |
645 | opts.omtu = chan->omtu; | |
646 | opts.flush_to = chan->flush_to; | |
647 | opts.mode = chan->mode; | |
47d1ec61 GP |
648 | opts.fcs = chan->fcs; |
649 | opts.max_tx = chan->max_tx; | |
6327eb98 | 650 | opts.txwin_size = chan->tx_win; |
33575df7 GP |
651 | |
652 | len = min_t(unsigned int, sizeof(opts), optlen); | |
653 | if (copy_from_user((char *) &opts, optval, len)) { | |
654 | err = -EFAULT; | |
655 | break; | |
656 | } | |
657 | ||
6327eb98 | 658 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
33575df7 GP |
659 | err = -EINVAL; |
660 | break; | |
661 | } | |
662 | ||
682877c3 AG |
663 | if (!l2cap_valid_mtu(chan, opts.imtu)) { |
664 | err = -EINVAL; | |
665 | break; | |
666 | } | |
667 | ||
0c1bc5c6 GP |
668 | chan->mode = opts.mode; |
669 | switch (chan->mode) { | |
38319713 JH |
670 | case L2CAP_MODE_LE_FLOWCTL: |
671 | break; | |
33575df7 | 672 | case L2CAP_MODE_BASIC: |
c1360a1c | 673 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
674 | break; |
675 | case L2CAP_MODE_ERTM: | |
676 | case L2CAP_MODE_STREAMING: | |
677 | if (!disable_ertm) | |
678 | break; | |
679 | /* fall through */ | |
680 | default: | |
681 | err = -EINVAL; | |
682 | break; | |
683 | } | |
684 | ||
0c1bc5c6 GP |
685 | chan->imtu = opts.imtu; |
686 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
687 | chan->fcs = opts.fcs; |
688 | chan->max_tx = opts.max_tx; | |
6327eb98 | 689 | chan->tx_win = opts.txwin_size; |
12d59781 | 690 | chan->flush_to = opts.flush_to; |
33575df7 GP |
691 | break; |
692 | ||
693 | case L2CAP_LM: | |
694 | if (get_user(opt, (u32 __user *) optval)) { | |
695 | err = -EFAULT; | |
696 | break; | |
697 | } | |
698 | ||
699 | if (opt & L2CAP_LM_AUTH) | |
4343478f | 700 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 701 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 702 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 703 | if (opt & L2CAP_LM_SECURE) |
4343478f | 704 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 705 | |
43bd0f32 AE |
706 | if (opt & L2CAP_LM_MASTER) |
707 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
708 | else | |
709 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
710 | |
711 | if (opt & L2CAP_LM_RELIABLE) | |
712 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
713 | else | |
714 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
715 | break; |
716 | ||
717 | default: | |
718 | err = -ENOPROTOOPT; | |
719 | break; | |
720 | } | |
721 | ||
722 | release_sock(sk); | |
723 | return err; | |
724 | } | |
725 | ||
2d792818 GP |
726 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, |
727 | char __user *optval, unsigned int optlen) | |
33575df7 GP |
728 | { |
729 | struct sock *sk = sock->sk; | |
4343478f | 730 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 731 | struct bt_security sec; |
14b12d0b | 732 | struct bt_power pwr; |
f1cb9af5 | 733 | struct l2cap_conn *conn; |
33575df7 GP |
734 | int len, err = 0; |
735 | u32 opt; | |
736 | ||
737 | BT_DBG("sk %p", sk); | |
738 | ||
739 | if (level == SOL_L2CAP) | |
740 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
741 | ||
742 | if (level != SOL_BLUETOOTH) | |
743 | return -ENOPROTOOPT; | |
744 | ||
745 | lock_sock(sk); | |
746 | ||
747 | switch (optname) { | |
748 | case BT_SECURITY: | |
715ec005 | 749 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
2d792818 | 750 | chan->chan_type != L2CAP_CHAN_RAW) { |
33575df7 GP |
751 | err = -EINVAL; |
752 | break; | |
753 | } | |
754 | ||
755 | sec.level = BT_SECURITY_LOW; | |
756 | ||
757 | len = min_t(unsigned int, sizeof(sec), optlen); | |
758 | if (copy_from_user((char *) &sec, optval, len)) { | |
759 | err = -EFAULT; | |
760 | break; | |
761 | } | |
762 | ||
763 | if (sec.level < BT_SECURITY_LOW || | |
2d792818 | 764 | sec.level > BT_SECURITY_HIGH) { |
33575df7 GP |
765 | err = -EINVAL; |
766 | break; | |
767 | } | |
768 | ||
4343478f | 769 | chan->sec_level = sec.level; |
f1cb9af5 | 770 | |
0bee1d60 GP |
771 | if (!chan->conn) |
772 | break; | |
773 | ||
f1cb9af5 | 774 | conn = chan->conn; |
0bee1d60 GP |
775 | |
776 | /*change security for LE channels */ | |
073d1cf3 | 777 | if (chan->scid == L2CAP_CID_ATT) { |
f1cb9af5 VCG |
778 | if (!conn->hcon->out) { |
779 | err = -EINVAL; | |
780 | break; | |
781 | } | |
782 | ||
cc110922 | 783 | if (smp_conn_security(conn->hcon, sec.level)) |
f1cb9af5 | 784 | break; |
f1cb9af5 | 785 | sk->sk_state = BT_CONFIG; |
3542b854 | 786 | chan->state = BT_CONFIG; |
0bee1d60 | 787 | |
a7d7723a GP |
788 | /* or for ACL link */ |
789 | } else if ((sk->sk_state == BT_CONNECT2 && | |
2d792818 | 790 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) || |
a7d7723a GP |
791 | sk->sk_state == BT_CONNECTED) { |
792 | if (!l2cap_chan_check_security(chan)) | |
c5daa683 | 793 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); |
a7d7723a GP |
794 | else |
795 | sk->sk_state_change(sk); | |
0bee1d60 GP |
796 | } else { |
797 | err = -EINVAL; | |
f1cb9af5 | 798 | } |
33575df7 GP |
799 | break; |
800 | ||
801 | case BT_DEFER_SETUP: | |
802 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
803 | err = -EINVAL; | |
804 | break; | |
805 | } | |
806 | ||
807 | if (get_user(opt, (u32 __user *) optval)) { | |
808 | err = -EFAULT; | |
809 | break; | |
810 | } | |
811 | ||
bdc25783 | 812 | if (opt) { |
c5daa683 | 813 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
bdc25783 MH |
814 | set_bit(FLAG_DEFER_SETUP, &chan->flags); |
815 | } else { | |
c5daa683 | 816 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
bdc25783 MH |
817 | clear_bit(FLAG_DEFER_SETUP, &chan->flags); |
818 | } | |
33575df7 GP |
819 | break; |
820 | ||
821 | case BT_FLUSHABLE: | |
822 | if (get_user(opt, (u32 __user *) optval)) { | |
823 | err = -EFAULT; | |
824 | break; | |
825 | } | |
826 | ||
827 | if (opt > BT_FLUSHABLE_ON) { | |
828 | err = -EINVAL; | |
829 | break; | |
830 | } | |
831 | ||
832 | if (opt == BT_FLUSHABLE_OFF) { | |
c1f23a2b | 833 | conn = chan->conn; |
25985edc | 834 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
835 | No Flush support in the LM */ |
836 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
837 | err = -EINVAL; | |
838 | break; | |
839 | } | |
840 | } | |
841 | ||
d57b0e8b AE |
842 | if (opt) |
843 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
844 | else | |
845 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
846 | break; |
847 | ||
14b12d0b JG |
848 | case BT_POWER: |
849 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
2d792818 | 850 | chan->chan_type != L2CAP_CHAN_RAW) { |
14b12d0b JG |
851 | err = -EINVAL; |
852 | break; | |
853 | } | |
854 | ||
855 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
856 | ||
857 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
858 | if (copy_from_user((char *) &pwr, optval, len)) { | |
859 | err = -EFAULT; | |
860 | break; | |
861 | } | |
15770b1a AE |
862 | |
863 | if (pwr.force_active) | |
864 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
865 | else | |
866 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
867 | break; |
868 | ||
2ea66482 | 869 | case BT_CHANNEL_POLICY: |
2ea66482 MM |
870 | if (get_user(opt, (u32 __user *) optval)) { |
871 | err = -EFAULT; | |
872 | break; | |
873 | } | |
874 | ||
875 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { | |
876 | err = -EINVAL; | |
877 | break; | |
878 | } | |
879 | ||
880 | if (chan->mode != L2CAP_MODE_ERTM && | |
2d792818 | 881 | chan->mode != L2CAP_MODE_STREAMING) { |
2ea66482 MM |
882 | err = -EOPNOTSUPP; |
883 | break; | |
884 | } | |
885 | ||
886 | chan->chan_policy = (u8) opt; | |
3f7a56c4 MM |
887 | |
888 | if (sk->sk_state == BT_CONNECTED && | |
889 | chan->move_role == L2CAP_MOVE_ROLE_NONE) | |
890 | l2cap_move_start(chan); | |
891 | ||
14b12d0b JG |
892 | break; |
893 | ||
1f435424 JH |
894 | case BT_SNDMTU: |
895 | if (!enable_lecoc) { | |
896 | err = -EPROTONOSUPPORT; | |
897 | break; | |
898 | } | |
899 | ||
900 | if (!bdaddr_type_is_le(chan->src_type)) { | |
901 | err = -EINVAL; | |
902 | break; | |
903 | } | |
904 | ||
905 | /* Setting is not supported as it's the remote side that | |
906 | * decides this. | |
907 | */ | |
908 | err = -EPERM; | |
909 | break; | |
910 | ||
911 | case BT_RCVMTU: | |
912 | if (!enable_lecoc) { | |
913 | err = -EPROTONOSUPPORT; | |
914 | break; | |
915 | } | |
916 | ||
917 | if (!bdaddr_type_is_le(chan->src_type)) { | |
918 | err = -EINVAL; | |
919 | break; | |
920 | } | |
921 | ||
922 | if (sk->sk_state == BT_CONNECTED) { | |
923 | err = -EISCONN; | |
924 | break; | |
925 | } | |
926 | ||
927 | if (get_user(opt, (u32 __user *) optval)) { | |
928 | err = -EFAULT; | |
929 | break; | |
930 | } | |
931 | ||
932 | chan->imtu = opt; | |
933 | break; | |
934 | ||
33575df7 GP |
935 | default: |
936 | err = -ENOPROTOOPT; | |
937 | break; | |
938 | } | |
939 | ||
940 | release_sock(sk); | |
941 | return err; | |
942 | } | |
fd83ccdb | 943 | |
2d792818 GP |
944 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
945 | struct msghdr *msg, size_t len) | |
fd83ccdb GP |
946 | { |
947 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 948 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
949 | int err; |
950 | ||
951 | BT_DBG("sock %p, sk %p", sock, sk); | |
952 | ||
953 | err = sock_error(sk); | |
954 | if (err) | |
955 | return err; | |
956 | ||
957 | if (msg->msg_flags & MSG_OOB) | |
958 | return -EOPNOTSUPP; | |
959 | ||
a6a5568c | 960 | if (sk->sk_state != BT_CONNECTED) |
9a91a04a | 961 | return -ENOTCONN; |
fd83ccdb | 962 | |
e793dcf0 JH |
963 | lock_sock(sk); |
964 | err = bt_sock_wait_ready(sk, msg->msg_flags); | |
965 | release_sock(sk); | |
966 | if (err) | |
967 | return err; | |
968 | ||
a6a5568c | 969 | l2cap_chan_lock(chan); |
5e59b791 | 970 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
a6a5568c | 971 | l2cap_chan_unlock(chan); |
fd83ccdb | 972 | |
fd83ccdb GP |
973 | return err; |
974 | } | |
33575df7 | 975 | |
2d792818 GP |
976 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
977 | struct msghdr *msg, size_t len, int flags) | |
68983259 GP |
978 | { |
979 | struct sock *sk = sock->sk; | |
e328140f MM |
980 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
981 | int err; | |
68983259 GP |
982 | |
983 | lock_sock(sk); | |
984 | ||
c5daa683 GP |
985 | if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, |
986 | &bt_sk(sk)->flags)) { | |
38319713 JH |
987 | if (bdaddr_type_is_le(pi->chan->src_type)) { |
988 | sk->sk_state = BT_CONNECTED; | |
989 | pi->chan->state = BT_CONNECTED; | |
990 | __l2cap_le_connect_rsp_defer(pi->chan); | |
991 | } else { | |
992 | sk->sk_state = BT_CONFIG; | |
993 | pi->chan->state = BT_CONFIG; | |
994 | __l2cap_connect_rsp_defer(pi->chan); | |
995 | } | |
8c1d787b | 996 | |
970871bc JH |
997 | err = 0; |
998 | goto done; | |
68983259 GP |
999 | } |
1000 | ||
1001 | release_sock(sk); | |
1002 | ||
1003 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
1004 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
1005 | else | |
1006 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
1007 | ||
1008 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
1009 | return err; | |
1010 | ||
1011 | /* Attempt to put pending rx data in the socket buffer */ | |
1012 | ||
1013 | lock_sock(sk); | |
1014 | ||
1015 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
1016 | goto done; | |
1017 | ||
1018 | if (pi->rx_busy_skb) { | |
1019 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
1020 | pi->rx_busy_skb = NULL; | |
1021 | else | |
1022 | goto done; | |
1023 | } | |
1024 | ||
1025 | /* Restore data flow when half of the receive buffer is | |
1026 | * available. This avoids resending large numbers of | |
1027 | * frames. | |
1028 | */ | |
1029 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
1030 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 1031 | |
e328140f MM |
1032 | done: |
1033 | release_sock(sk); | |
1034 | return err; | |
68983259 GP |
1035 | } |
1036 | ||
05fc1576 GP |
1037 | /* Kill socket (only if zapped and orphan) |
1038 | * Must be called on unlocked socket. | |
1039 | */ | |
ba3bd0ee | 1040 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
1041 | { |
1042 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
1043 | return; | |
1044 | ||
e05dcc32 | 1045 | BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state)); |
05fc1576 GP |
1046 | |
1047 | /* Kill poor orphan */ | |
6ff5abbf | 1048 | |
4af66c69 | 1049 | l2cap_chan_put(l2cap_pi(sk)->chan); |
05fc1576 GP |
1050 | sock_set_flag(sk, SOCK_DEAD); |
1051 | sock_put(sk); | |
1052 | } | |
1053 | ||
dc25306b GP |
1054 | static int __l2cap_wait_ack(struct sock *sk) |
1055 | { | |
1056 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; | |
1057 | DECLARE_WAITQUEUE(wait, current); | |
1058 | int err = 0; | |
1059 | int timeo = HZ/5; | |
1060 | ||
1061 | add_wait_queue(sk_sleep(sk), &wait); | |
1062 | set_current_state(TASK_INTERRUPTIBLE); | |
1063 | while (chan->unacked_frames > 0 && chan->conn) { | |
1064 | if (!timeo) | |
1065 | timeo = HZ/5; | |
1066 | ||
1067 | if (signal_pending(current)) { | |
1068 | err = sock_intr_errno(timeo); | |
1069 | break; | |
1070 | } | |
1071 | ||
1072 | release_sock(sk); | |
1073 | timeo = schedule_timeout(timeo); | |
1074 | lock_sock(sk); | |
1075 | set_current_state(TASK_INTERRUPTIBLE); | |
1076 | ||
1077 | err = sock_error(sk); | |
1078 | if (err) | |
1079 | break; | |
1080 | } | |
1081 | set_current_state(TASK_RUNNING); | |
1082 | remove_wait_queue(sk_sleep(sk), &wait); | |
1083 | return err; | |
1084 | } | |
1085 | ||
dcba0dba GP |
1086 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
1087 | { | |
1088 | struct sock *sk = sock->sk; | |
7ddb6e0f | 1089 | struct l2cap_chan *chan; |
3df91ea2 | 1090 | struct l2cap_conn *conn; |
dcba0dba GP |
1091 | int err = 0; |
1092 | ||
1093 | BT_DBG("sock %p, sk %p", sock, sk); | |
1094 | ||
1095 | if (!sk) | |
1096 | return 0; | |
1097 | ||
7ddb6e0f | 1098 | chan = l2cap_pi(sk)->chan; |
3df91ea2 AE |
1099 | conn = chan->conn; |
1100 | ||
1101 | if (conn) | |
1102 | mutex_lock(&conn->chan_lock); | |
7ddb6e0f | 1103 | |
6be36555 | 1104 | l2cap_chan_lock(chan); |
dcba0dba | 1105 | lock_sock(sk); |
6be36555 | 1106 | |
dcba0dba | 1107 | if (!sk->sk_shutdown) { |
0c1bc5c6 | 1108 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
1109 | err = __l2cap_wait_ack(sk); |
1110 | ||
1111 | sk->sk_shutdown = SHUTDOWN_MASK; | |
3df91ea2 | 1112 | |
6be36555 | 1113 | release_sock(sk); |
0f852724 | 1114 | l2cap_chan_close(chan, 0); |
6be36555 | 1115 | lock_sock(sk); |
dcba0dba GP |
1116 | |
1117 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
1118 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
2d792818 | 1119 | sk->sk_lingertime); |
dcba0dba GP |
1120 | } |
1121 | ||
1122 | if (!err && sk->sk_err) | |
1123 | err = -sk->sk_err; | |
1124 | ||
1125 | release_sock(sk); | |
6be36555 | 1126 | l2cap_chan_unlock(chan); |
3df91ea2 AE |
1127 | |
1128 | if (conn) | |
1129 | mutex_unlock(&conn->chan_lock); | |
1130 | ||
dcba0dba GP |
1131 | return err; |
1132 | } | |
1133 | ||
554f05bb GP |
1134 | static int l2cap_sock_release(struct socket *sock) |
1135 | { | |
1136 | struct sock *sk = sock->sk; | |
1137 | int err; | |
1138 | ||
1139 | BT_DBG("sock %p, sk %p", sock, sk); | |
1140 | ||
1141 | if (!sk) | |
1142 | return 0; | |
1143 | ||
5b28d95c MY |
1144 | bt_sock_unlink(&l2cap_sk_list, sk); |
1145 | ||
554f05bb GP |
1146 | err = l2cap_sock_shutdown(sock, 2); |
1147 | ||
1148 | sock_orphan(sk); | |
1149 | l2cap_sock_kill(sk); | |
1150 | return err; | |
1151 | } | |
1152 | ||
c0df7f6e AE |
1153 | static void l2cap_sock_cleanup_listen(struct sock *parent) |
1154 | { | |
1155 | struct sock *sk; | |
1156 | ||
1157 | BT_DBG("parent %p", parent); | |
1158 | ||
1159 | /* Close not yet accepted channels */ | |
1160 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
1161 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; | |
1162 | ||
1163 | l2cap_chan_lock(chan); | |
1164 | __clear_chan_timer(chan); | |
1165 | l2cap_chan_close(chan, ECONNRESET); | |
1166 | l2cap_chan_unlock(chan); | |
1167 | ||
1168 | l2cap_sock_kill(sk); | |
1169 | } | |
1170 | } | |
1171 | ||
80b98027 | 1172 | static struct l2cap_chan *l2cap_sock_new_connection_cb(struct l2cap_chan *chan) |
80808e43 | 1173 | { |
80b98027 | 1174 | struct sock *sk, *parent = chan->data; |
80808e43 | 1175 | |
8ffb9290 GP |
1176 | lock_sock(parent); |
1177 | ||
53826692 GP |
1178 | /* Check for backlog size */ |
1179 | if (sk_acceptq_is_full(parent)) { | |
1180 | BT_DBG("backlog full %d", parent->sk_ack_backlog); | |
1181 | return NULL; | |
1182 | } | |
1183 | ||
80808e43 | 1184 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, |
2d792818 | 1185 | GFP_ATOMIC); |
80808e43 GP |
1186 | if (!sk) |
1187 | return NULL; | |
1188 | ||
d22015aa OP |
1189 | bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); |
1190 | ||
80808e43 GP |
1191 | l2cap_sock_init(sk, parent); |
1192 | ||
644912e1 GP |
1193 | bt_accept_enqueue(parent, sk); |
1194 | ||
8ffb9290 GP |
1195 | release_sock(parent); |
1196 | ||
80808e43 GP |
1197 | return l2cap_pi(sk)->chan; |
1198 | } | |
1199 | ||
80b98027 | 1200 | static int l2cap_sock_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb) |
23070494 | 1201 | { |
80b98027 | 1202 | struct sock *sk = chan->data; |
84b34d98 | 1203 | int err; |
e328140f | 1204 | |
6be36555 AE |
1205 | lock_sock(sk); |
1206 | ||
84b34d98 | 1207 | if (l2cap_pi(sk)->rx_busy_skb) { |
6be36555 AE |
1208 | err = -ENOMEM; |
1209 | goto done; | |
1210 | } | |
e328140f MM |
1211 | |
1212 | err = sock_queue_rcv_skb(sk, skb); | |
1213 | ||
1214 | /* For ERTM, handle one skb that doesn't fit into the recv | |
1215 | * buffer. This is important to do because the data frames | |
1216 | * have already been acked, so the skb cannot be discarded. | |
1217 | * | |
1218 | * Notify the l2cap core that the buffer is full, so the | |
1219 | * LOCAL_BUSY state is entered and no more frames are | |
1220 | * acked and reassembled until there is buffer space | |
1221 | * available. | |
1222 | */ | |
84b34d98 MH |
1223 | if (err < 0 && chan->mode == L2CAP_MODE_ERTM) { |
1224 | l2cap_pi(sk)->rx_busy_skb = skb; | |
1225 | l2cap_chan_busy(chan, 1); | |
e328140f MM |
1226 | err = 0; |
1227 | } | |
23070494 | 1228 | |
6be36555 AE |
1229 | done: |
1230 | release_sock(sk); | |
1231 | ||
e328140f | 1232 | return err; |
23070494 GP |
1233 | } |
1234 | ||
80b98027 | 1235 | static void l2cap_sock_close_cb(struct l2cap_chan *chan) |
ba3bd0ee | 1236 | { |
80b98027 | 1237 | struct sock *sk = chan->data; |
ba3bd0ee GP |
1238 | |
1239 | l2cap_sock_kill(sk); | |
1240 | } | |
1241 | ||
c0df7f6e AE |
1242 | static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err) |
1243 | { | |
1244 | struct sock *sk = chan->data; | |
1245 | struct sock *parent; | |
1246 | ||
1247 | lock_sock(sk); | |
1248 | ||
1249 | parent = bt_sk(sk)->parent; | |
1250 | ||
1251 | sock_set_flag(sk, SOCK_ZAPPED); | |
1252 | ||
1253 | switch (chan->state) { | |
1254 | case BT_OPEN: | |
1255 | case BT_BOUND: | |
1256 | case BT_CLOSED: | |
1257 | break; | |
1258 | case BT_LISTEN: | |
1259 | l2cap_sock_cleanup_listen(sk); | |
1260 | sk->sk_state = BT_CLOSED; | |
1261 | chan->state = BT_CLOSED; | |
1262 | ||
1263 | break; | |
1264 | default: | |
1265 | sk->sk_state = BT_CLOSED; | |
1266 | chan->state = BT_CLOSED; | |
1267 | ||
1268 | sk->sk_err = err; | |
1269 | ||
1270 | if (parent) { | |
1271 | bt_accept_unlink(sk); | |
1272 | parent->sk_data_ready(parent, 0); | |
1273 | } else { | |
1274 | sk->sk_state_change(sk); | |
1275 | } | |
1276 | ||
1277 | break; | |
1278 | } | |
1279 | ||
1280 | release_sock(sk); | |
1281 | } | |
1282 | ||
53f52121 GP |
1283 | static void l2cap_sock_state_change_cb(struct l2cap_chan *chan, int state, |
1284 | int err) | |
89bc500e | 1285 | { |
80b98027 | 1286 | struct sock *sk = chan->data; |
89bc500e GP |
1287 | |
1288 | sk->sk_state = state; | |
53f52121 GP |
1289 | |
1290 | if (err) | |
1291 | sk->sk_err = err; | |
89bc500e GP |
1292 | } |
1293 | ||
2f7719ce | 1294 | static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, |
90338947 | 1295 | unsigned long len, int nb) |
2f7719ce | 1296 | { |
0f2c6153 | 1297 | struct sock *sk = chan->data; |
90338947 GP |
1298 | struct sk_buff *skb; |
1299 | int err; | |
1300 | ||
a6a5568c | 1301 | l2cap_chan_unlock(chan); |
0f2c6153 | 1302 | skb = bt_skb_send_alloc(sk, len, nb, &err); |
a6a5568c MM |
1303 | l2cap_chan_lock(chan); |
1304 | ||
90338947 GP |
1305 | if (!skb) |
1306 | return ERR_PTR(err); | |
2f7719ce | 1307 | |
0e790c64 GP |
1308 | bt_cb(skb)->chan = chan; |
1309 | ||
90338947 | 1310 | return skb; |
2f7719ce AE |
1311 | } |
1312 | ||
54a59aa2 AE |
1313 | static void l2cap_sock_ready_cb(struct l2cap_chan *chan) |
1314 | { | |
1315 | struct sock *sk = chan->data; | |
1316 | struct sock *parent; | |
1317 | ||
1318 | lock_sock(sk); | |
1319 | ||
1320 | parent = bt_sk(sk)->parent; | |
1321 | ||
1322 | BT_DBG("sk %p, parent %p", sk, parent); | |
1323 | ||
1324 | sk->sk_state = BT_CONNECTED; | |
1325 | sk->sk_state_change(sk); | |
1326 | ||
1327 | if (parent) | |
1328 | parent->sk_data_ready(parent, 0); | |
1329 | ||
1330 | release_sock(sk); | |
1331 | } | |
1332 | ||
2dc4e510 GP |
1333 | static void l2cap_sock_defer_cb(struct l2cap_chan *chan) |
1334 | { | |
acdcabf5 GP |
1335 | struct sock *parent, *sk = chan->data; |
1336 | ||
1337 | lock_sock(sk); | |
2dc4e510 | 1338 | |
acdcabf5 | 1339 | parent = bt_sk(sk)->parent; |
2dc4e510 GP |
1340 | if (parent) |
1341 | parent->sk_data_ready(parent, 0); | |
acdcabf5 GP |
1342 | |
1343 | release_sock(sk); | |
2dc4e510 GP |
1344 | } |
1345 | ||
d97c899b MH |
1346 | static void l2cap_sock_resume_cb(struct l2cap_chan *chan) |
1347 | { | |
1348 | struct sock *sk = chan->data; | |
1349 | ||
1350 | clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); | |
1351 | sk->sk_state_change(sk); | |
1352 | } | |
1353 | ||
5ec1bbe5 GP |
1354 | static void l2cap_sock_set_shutdown_cb(struct l2cap_chan *chan) |
1355 | { | |
1356 | struct sock *sk = chan->data; | |
1357 | ||
1358 | lock_sock(sk); | |
1359 | sk->sk_shutdown = SHUTDOWN_MASK; | |
1360 | release_sock(sk); | |
1361 | } | |
1362 | ||
8d836d71 GP |
1363 | static long l2cap_sock_get_sndtimeo_cb(struct l2cap_chan *chan) |
1364 | { | |
1365 | struct sock *sk = chan->data; | |
1366 | ||
1367 | return sk->sk_sndtimeo; | |
1368 | } | |
1369 | ||
837776f7 JH |
1370 | static void l2cap_sock_suspend_cb(struct l2cap_chan *chan) |
1371 | { | |
1372 | struct sock *sk = chan->data; | |
1373 | ||
1374 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); | |
1375 | sk->sk_state_change(sk); | |
1376 | } | |
1377 | ||
80808e43 GP |
1378 | static struct l2cap_ops l2cap_chan_ops = { |
1379 | .name = "L2CAP Socket Interface", | |
1380 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 1381 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 1382 | .close = l2cap_sock_close_cb, |
c0df7f6e | 1383 | .teardown = l2cap_sock_teardown_cb, |
89bc500e | 1384 | .state_change = l2cap_sock_state_change_cb, |
54a59aa2 | 1385 | .ready = l2cap_sock_ready_cb, |
2dc4e510 | 1386 | .defer = l2cap_sock_defer_cb, |
d97c899b | 1387 | .resume = l2cap_sock_resume_cb, |
837776f7 | 1388 | .suspend = l2cap_sock_suspend_cb, |
5ec1bbe5 | 1389 | .set_shutdown = l2cap_sock_set_shutdown_cb, |
8d836d71 | 1390 | .get_sndtimeo = l2cap_sock_get_sndtimeo_cb, |
2f7719ce | 1391 | .alloc_skb = l2cap_sock_alloc_skb_cb, |
80808e43 GP |
1392 | }; |
1393 | ||
bb58f747 GP |
1394 | static void l2cap_sock_destruct(struct sock *sk) |
1395 | { | |
1396 | BT_DBG("sk %p", sk); | |
1397 | ||
23d3a869 SL |
1398 | if (l2cap_pi(sk)->chan) |
1399 | l2cap_chan_put(l2cap_pi(sk)->chan); | |
84b34d98 | 1400 | |
e328140f MM |
1401 | if (l2cap_pi(sk)->rx_busy_skb) { |
1402 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
1403 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
1404 | } | |
1405 | ||
bb58f747 GP |
1406 | skb_queue_purge(&sk->sk_receive_queue); |
1407 | skb_queue_purge(&sk->sk_write_queue); | |
1408 | } | |
1409 | ||
2edf870d MH |
1410 | static void l2cap_skb_msg_name(struct sk_buff *skb, void *msg_name, |
1411 | int *msg_namelen) | |
1412 | { | |
1413 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) msg_name; | |
1414 | ||
1415 | memset(la, 0, sizeof(struct sockaddr_l2)); | |
1416 | la->l2_family = AF_BLUETOOTH; | |
1417 | la->l2_psm = bt_cb(skb)->psm; | |
1418 | bacpy(&la->l2_bdaddr, &bt_cb(skb)->bdaddr); | |
1419 | ||
1420 | *msg_namelen = sizeof(struct sockaddr_l2); | |
1421 | } | |
1422 | ||
80808e43 | 1423 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 | 1424 | { |
84b34d98 | 1425 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
bb58f747 GP |
1426 | |
1427 | BT_DBG("sk %p", sk); | |
1428 | ||
1429 | if (parent) { | |
b4450035 GP |
1430 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
1431 | ||
bb58f747 | 1432 | sk->sk_type = parent->sk_type; |
c5daa683 | 1433 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
bb58f747 | 1434 | |
715ec005 | 1435 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
1436 | chan->imtu = pchan->imtu; |
1437 | chan->omtu = pchan->omtu; | |
b4450035 | 1438 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 1439 | chan->mode = pchan->mode; |
47d1ec61 GP |
1440 | chan->fcs = pchan->fcs; |
1441 | chan->max_tx = pchan->max_tx; | |
1442 | chan->tx_win = pchan->tx_win; | |
6b3c7104 | 1443 | chan->tx_win_max = pchan->tx_win_max; |
4343478f | 1444 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 1445 | chan->flags = pchan->flags; |
0cd75f7e JH |
1446 | chan->tx_credits = pchan->tx_credits; |
1447 | chan->rx_credits = pchan->rx_credits; | |
6230c9b4 PM |
1448 | |
1449 | security_sk_clone(parent, sk); | |
bb58f747 | 1450 | } else { |
715ec005 GP |
1451 | switch (sk->sk_type) { |
1452 | case SOCK_RAW: | |
1453 | chan->chan_type = L2CAP_CHAN_RAW; | |
1454 | break; | |
1455 | case SOCK_DGRAM: | |
1456 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
2edf870d | 1457 | bt_sk(sk)->skb_msg_name = l2cap_skb_msg_name; |
715ec005 GP |
1458 | break; |
1459 | case SOCK_SEQPACKET: | |
1460 | case SOCK_STREAM: | |
1461 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
1462 | break; | |
1463 | } | |
1464 | ||
0c1bc5c6 GP |
1465 | chan->imtu = L2CAP_DEFAULT_MTU; |
1466 | chan->omtu = 0; | |
bb58f747 | 1467 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 1468 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 1469 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 1470 | } else { |
0c1bc5c6 | 1471 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 1472 | } |
bd4b1653 AE |
1473 | |
1474 | l2cap_chan_set_defaults(chan); | |
bb58f747 GP |
1475 | } |
1476 | ||
1477 | /* Default config options */ | |
0c1bc5c6 | 1478 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
1479 | |
1480 | chan->data = sk; | |
1481 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
1482 | } |
1483 | ||
1484 | static struct proto l2cap_proto = { | |
1485 | .name = "L2CAP", | |
1486 | .owner = THIS_MODULE, | |
1487 | .obj_size = sizeof(struct l2cap_pinfo) | |
1488 | }; | |
1489 | ||
2d792818 GP |
1490 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, |
1491 | int proto, gfp_t prio) | |
bb58f747 GP |
1492 | { |
1493 | struct sock *sk; | |
dc50a06d | 1494 | struct l2cap_chan *chan; |
bb58f747 GP |
1495 | |
1496 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
1497 | if (!sk) | |
1498 | return NULL; | |
1499 | ||
1500 | sock_init_data(sock, sk); | |
1501 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1502 | ||
1503 | sk->sk_destruct = l2cap_sock_destruct; | |
ba13ccd9 | 1504 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
bb58f747 GP |
1505 | |
1506 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1507 | ||
1508 | sk->sk_protocol = proto; | |
1509 | sk->sk_state = BT_OPEN; | |
1510 | ||
eef1d9b6 | 1511 | chan = l2cap_chan_create(); |
dc50a06d | 1512 | if (!chan) { |
49dfbb91 | 1513 | sk_free(sk); |
dc50a06d GP |
1514 | return NULL; |
1515 | } | |
1516 | ||
61d6ef3e MM |
1517 | l2cap_chan_hold(chan); |
1518 | ||
dc50a06d GP |
1519 | l2cap_pi(sk)->chan = chan; |
1520 | ||
bb58f747 GP |
1521 | return sk; |
1522 | } | |
1523 | ||
1524 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1525 | int kern) | |
1526 | { | |
1527 | struct sock *sk; | |
1528 | ||
1529 | BT_DBG("sock %p", sock); | |
1530 | ||
1531 | sock->state = SS_UNCONNECTED; | |
1532 | ||
1533 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
2d792818 | 1534 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) |
bb58f747 GP |
1535 | return -ESOCKTNOSUPPORT; |
1536 | ||
1537 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1538 | return -EPERM; | |
1539 | ||
1540 | sock->ops = &l2cap_sock_ops; | |
1541 | ||
1542 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1543 | if (!sk) | |
1544 | return -ENOMEM; | |
1545 | ||
1546 | l2cap_sock_init(sk, NULL); | |
5b28d95c | 1547 | bt_sock_link(&l2cap_sk_list, sk); |
bb58f747 GP |
1548 | return 0; |
1549 | } | |
1550 | ||
cf2f90f5 | 1551 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1552 | .family = PF_BLUETOOTH, |
1553 | .owner = THIS_MODULE, | |
1554 | .release = l2cap_sock_release, | |
1555 | .bind = l2cap_sock_bind, | |
1556 | .connect = l2cap_sock_connect, | |
1557 | .listen = l2cap_sock_listen, | |
1558 | .accept = l2cap_sock_accept, | |
1559 | .getname = l2cap_sock_getname, | |
1560 | .sendmsg = l2cap_sock_sendmsg, | |
1561 | .recvmsg = l2cap_sock_recvmsg, | |
1562 | .poll = bt_sock_poll, | |
1563 | .ioctl = bt_sock_ioctl, | |
1564 | .mmap = sock_no_mmap, | |
1565 | .socketpair = sock_no_socketpair, | |
1566 | .shutdown = l2cap_sock_shutdown, | |
1567 | .setsockopt = l2cap_sock_setsockopt, | |
1568 | .getsockopt = l2cap_sock_getsockopt | |
1569 | }; | |
1570 | ||
bb58f747 GP |
1571 | static const struct net_proto_family l2cap_sock_family_ops = { |
1572 | .family = PF_BLUETOOTH, | |
1573 | .owner = THIS_MODULE, | |
1574 | .create = l2cap_sock_create, | |
1575 | }; | |
1576 | ||
1577 | int __init l2cap_init_sockets(void) | |
1578 | { | |
e2174ca4 | 1579 | int err; |
bb58f747 | 1580 | |
e2174ca4 GP |
1581 | err = proto_register(&l2cap_proto, 0); |
1582 | if (err < 0) | |
1583 | return err; | |
bb58f747 | 1584 | |
e2174ca4 | 1585 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
5b28d95c MY |
1586 | if (err < 0) { |
1587 | BT_ERR("L2CAP socket registration failed"); | |
e2174ca4 | 1588 | goto error; |
5b28d95c MY |
1589 | } |
1590 | ||
b0316615 | 1591 | err = bt_procfs_init(&init_net, "l2cap", &l2cap_sk_list, |
2d792818 | 1592 | NULL); |
5b28d95c MY |
1593 | if (err < 0) { |
1594 | BT_ERR("Failed to create L2CAP proc file"); | |
1595 | bt_sock_unregister(BTPROTO_L2CAP); | |
1596 | goto error; | |
1597 | } | |
bb58f747 | 1598 | |
e2174ca4 | 1599 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1600 | |
e2174ca4 | 1601 | return 0; |
bb58f747 GP |
1602 | |
1603 | error: | |
e2174ca4 GP |
1604 | proto_unregister(&l2cap_proto); |
1605 | return err; | |
bb58f747 GP |
1606 | } |
1607 | ||
1608 | void l2cap_cleanup_sockets(void) | |
1609 | { | |
5b28d95c | 1610 | bt_procfs_cleanup(&init_net, "l2cap"); |
5e9d7f86 | 1611 | bt_sock_unregister(BTPROTO_L2CAP); |
e2174ca4 | 1612 | proto_unregister(&l2cap_proto); |
bb58f747 | 1613 | } |
9149761a JH |
1614 | |
1615 | module_param(enable_lecoc, bool, 0644); | |
1616 | MODULE_PARM_DESC(enable_lecoc, "Enable support for LE CoC"); |