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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 | ||
21626e62 JH |
104 | if (la.l2_cid) { |
105 | /* When the socket gets created it defaults to | |
106 | * CHAN_CONN_ORIENTED, so we need to overwrite the | |
107 | * default here. | |
108 | */ | |
109 | chan->chan_type = L2CAP_CHAN_FIXED; | |
110 | chan->omtu = L2CAP_DEFAULT_MTU; | |
111 | } | |
112 | ||
bfe4655f | 113 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
9149761a | 114 | if (!enable_lecoc && la.l2_psm) |
bfe4655f JH |
115 | return -EINVAL; |
116 | /* We only allow ATT user space socket */ | |
9149761a JH |
117 | if (la.l2_cid && |
118 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) | |
bfe4655f JH |
119 | return -EINVAL; |
120 | } | |
121 | ||
af6bcd82 GP |
122 | lock_sock(sk); |
123 | ||
124 | if (sk->sk_state != BT_OPEN) { | |
125 | err = -EBADFD; | |
126 | goto done; | |
127 | } | |
128 | ||
129 | if (la.l2_psm) { | |
130 | __u16 psm = __le16_to_cpu(la.l2_psm); | |
131 | ||
4946096d JH |
132 | if (la.l2_bdaddr_type == BDADDR_BREDR) |
133 | err = l2cap_validate_bredr_psm(psm); | |
134 | else | |
135 | err = l2cap_validate_le_psm(psm); | |
af6bcd82 | 136 | |
4946096d | 137 | if (err) |
af6bcd82 | 138 | goto done; |
af6bcd82 GP |
139 | } |
140 | ||
9e4425ff | 141 | if (la.l2_cid) |
6e4aff10 | 142 | err = l2cap_add_scid(chan, __le16_to_cpu(la.l2_cid)); |
9e4425ff GP |
143 | else |
144 | err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); | |
af6bcd82 | 145 | |
9e4425ff GP |
146 | if (err < 0) |
147 | goto done; | |
af6bcd82 | 148 | |
6a974b50 | 149 | switch (chan->chan_type) { |
3124b843 MH |
150 | case L2CAP_CHAN_CONN_LESS: |
151 | if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_3DSP) | |
152 | chan->sec_level = BT_SECURITY_SDP; | |
153 | break; | |
6a974b50 MH |
154 | case L2CAP_CHAN_CONN_ORIENTED: |
155 | if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_SDP || | |
156 | __le16_to_cpu(la.l2_psm) == L2CAP_PSM_RFCOMM) | |
157 | chan->sec_level = BT_SECURITY_SDP; | |
158 | break; | |
cb6ca8e1 JH |
159 | case L2CAP_CHAN_RAW: |
160 | chan->sec_level = BT_SECURITY_SDP; | |
161 | break; | |
6a974b50 | 162 | } |
b62f328b | 163 | |
7eafc59e | 164 | bacpy(&chan->src, &la.l2_bdaddr); |
4f1654e0 | 165 | chan->src_type = la.l2_bdaddr_type; |
89bc500e | 166 | |
38319713 | 167 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
0ce43ce6 | 168 | chan->mode = L2CAP_MODE_LE_FLOWCTL; |
38319713 | 169 | |
89bc500e | 170 | chan->state = BT_BOUND; |
9e4425ff | 171 | sk->sk_state = BT_BOUND; |
af6bcd82 GP |
172 | |
173 | done: | |
174 | release_sock(sk); | |
175 | return err; | |
176 | } | |
177 | ||
2d792818 GP |
178 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, |
179 | int alen, int flags) | |
4e34c50b GP |
180 | { |
181 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 182 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
4e34c50b GP |
183 | struct sockaddr_l2 la; |
184 | int len, err = 0; | |
185 | ||
186 | BT_DBG("sk %p", sk); | |
187 | ||
188 | if (!addr || alen < sizeof(addr->sa_family) || | |
189 | addr->sa_family != AF_BLUETOOTH) | |
190 | return -EINVAL; | |
191 | ||
192 | memset(&la, 0, sizeof(la)); | |
193 | len = min_t(unsigned int, sizeof(la), alen); | |
194 | memcpy(&la, addr, len); | |
195 | ||
acd7d370 | 196 | if (la.l2_cid && la.l2_psm) |
4e34c50b GP |
197 | return -EINVAL; |
198 | ||
80c1a2e7 JH |
199 | if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) |
200 | return -EINVAL; | |
201 | ||
eb622495 JH |
202 | /* Check that the socket wasn't bound to something that |
203 | * conflicts with the address given to connect(). If chan->src | |
204 | * is BDADDR_ANY it means bind() was never used, in which case | |
205 | * chan->src_type and la.l2_bdaddr_type do not need to match. | |
206 | */ | |
207 | if (chan->src_type == BDADDR_BREDR && bacmp(&chan->src, BDADDR_ANY) && | |
208 | bdaddr_type_is_le(la.l2_bdaddr_type)) { | |
209 | /* Old user space versions will try to incorrectly bind | |
210 | * the ATT socket using BDADDR_BREDR. We need to accept | |
211 | * this and fix up the source address type only when | |
212 | * both the source CID and destination CID indicate | |
213 | * ATT. Anything else is an invalid combination. | |
214 | */ | |
215 | if (chan->scid != L2CAP_CID_ATT || | |
216 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) | |
217 | return -EINVAL; | |
218 | ||
219 | /* We don't have the hdev available here to make a | |
220 | * better decision on random vs public, but since all | |
221 | * user space versions that exhibit this issue anyway do | |
222 | * not support random local addresses assuming public | |
223 | * here is good enough. | |
224 | */ | |
225 | chan->src_type = BDADDR_LE_PUBLIC; | |
226 | } | |
1f209383 JH |
227 | |
228 | if (chan->src_type != BDADDR_BREDR && la.l2_bdaddr_type == BDADDR_BREDR) | |
229 | return -EINVAL; | |
230 | ||
bfe4655f | 231 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
9149761a | 232 | if (!enable_lecoc && la.l2_psm) |
bfe4655f JH |
233 | return -EINVAL; |
234 | /* We only allow ATT user space socket */ | |
9149761a JH |
235 | if (la.l2_cid && |
236 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) | |
bfe4655f JH |
237 | return -EINVAL; |
238 | } | |
239 | ||
38319713 | 240 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
0ce43ce6 | 241 | chan->mode = L2CAP_MODE_LE_FLOWCTL; |
38319713 | 242 | |
6e4aff10 | 243 | err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid), |
8e9f9892 | 244 | &la.l2_bdaddr, la.l2_bdaddr_type); |
4e34c50b | 245 | if (err) |
b3fb611e | 246 | return err; |
4e34c50b | 247 | |
6be36555 AE |
248 | lock_sock(sk); |
249 | ||
4e34c50b | 250 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
2d792818 | 251 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
b3fb611e AE |
252 | |
253 | release_sock(sk); | |
254 | ||
4e34c50b GP |
255 | return err; |
256 | } | |
257 | ||
af6bcd82 GP |
258 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
259 | { | |
260 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 261 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
262 | int err = 0; |
263 | ||
264 | BT_DBG("sk %p backlog %d", sk, backlog); | |
265 | ||
266 | lock_sock(sk); | |
267 | ||
6b3af733 | 268 | if (sk->sk_state != BT_BOUND) { |
af6bcd82 GP |
269 | err = -EBADFD; |
270 | goto done; | |
271 | } | |
272 | ||
6b3af733 MH |
273 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM) { |
274 | err = -EINVAL; | |
275 | goto done; | |
276 | } | |
277 | ||
0c1bc5c6 | 278 | switch (chan->mode) { |
af6bcd82 | 279 | case L2CAP_MODE_BASIC: |
38319713 | 280 | case L2CAP_MODE_LE_FLOWCTL: |
af6bcd82 GP |
281 | break; |
282 | case L2CAP_MODE_ERTM: | |
283 | case L2CAP_MODE_STREAMING: | |
284 | if (!disable_ertm) | |
285 | break; | |
286 | /* fall through */ | |
287 | default: | |
288 | err = -ENOTSUPP; | |
289 | goto done; | |
290 | } | |
291 | ||
af6bcd82 GP |
292 | sk->sk_max_ack_backlog = backlog; |
293 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
294 | |
295 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
296 | sk->sk_state = BT_LISTEN; |
297 | ||
298 | done: | |
299 | release_sock(sk); | |
300 | return err; | |
301 | } | |
302 | ||
2d792818 GP |
303 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, |
304 | int flags) | |
c47b7c72 GP |
305 | { |
306 | DECLARE_WAITQUEUE(wait, current); | |
307 | struct sock *sk = sock->sk, *nsk; | |
308 | long timeo; | |
309 | int err = 0; | |
310 | ||
311 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
312 | ||
c47b7c72 GP |
313 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
314 | ||
315 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
316 | ||
317 | /* Wait for an incoming connection. (wake-one). */ | |
318 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 319 | while (1) { |
c47b7c72 | 320 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
321 | |
322 | if (sk->sk_state != BT_LISTEN) { | |
323 | err = -EBADFD; | |
c47b7c72 GP |
324 | break; |
325 | } | |
326 | ||
f9a3c20a PH |
327 | nsk = bt_accept_dequeue(sk, newsock); |
328 | if (nsk) | |
329 | break; | |
c47b7c72 | 330 | |
f9a3c20a PH |
331 | if (!timeo) { |
332 | err = -EAGAIN; | |
c47b7c72 GP |
333 | break; |
334 | } | |
335 | ||
336 | if (signal_pending(current)) { | |
337 | err = sock_intr_errno(timeo); | |
338 | break; | |
339 | } | |
f9a3c20a PH |
340 | |
341 | release_sock(sk); | |
342 | timeo = schedule_timeout(timeo); | |
343 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 344 | } |
f9a3c20a | 345 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
346 | remove_wait_queue(sk_sleep(sk), &wait); |
347 | ||
348 | if (err) | |
349 | goto done; | |
350 | ||
351 | newsock->state = SS_CONNECTED; | |
352 | ||
353 | BT_DBG("new socket %p", nsk); | |
354 | ||
355 | done: | |
356 | release_sock(sk); | |
357 | return err; | |
358 | } | |
359 | ||
2d792818 GP |
360 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, |
361 | int *len, int peer) | |
d7175d55 GP |
362 | { |
363 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
364 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 365 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
366 | |
367 | BT_DBG("sock %p, sk %p", sock, sk); | |
368 | ||
792039c7 | 369 | memset(la, 0, sizeof(struct sockaddr_l2)); |
d7175d55 GP |
370 | addr->sa_family = AF_BLUETOOTH; |
371 | *len = sizeof(struct sockaddr_l2); | |
372 | ||
373 | if (peer) { | |
fe4128e0 | 374 | la->l2_psm = chan->psm; |
7eafc59e | 375 | bacpy(&la->l2_bdaddr, &chan->dst); |
fe4128e0 | 376 | la->l2_cid = cpu_to_le16(chan->dcid); |
4f1654e0 | 377 | la->l2_bdaddr_type = chan->dst_type; |
d7175d55 | 378 | } else { |
0c1bc5c6 | 379 | la->l2_psm = chan->sport; |
7eafc59e | 380 | bacpy(&la->l2_bdaddr, &chan->src); |
fe4128e0 | 381 | la->l2_cid = cpu_to_le16(chan->scid); |
4f1654e0 | 382 | la->l2_bdaddr_type = chan->src_type; |
d7175d55 GP |
383 | } |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
2d792818 GP |
388 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, |
389 | char __user *optval, int __user *optlen) | |
99f4808d GP |
390 | { |
391 | struct sock *sk = sock->sk; | |
4343478f | 392 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
393 | struct l2cap_options opts; |
394 | struct l2cap_conninfo cinfo; | |
395 | int len, err = 0; | |
396 | u32 opt; | |
397 | ||
398 | BT_DBG("sk %p", sk); | |
399 | ||
400 | if (get_user(len, optlen)) | |
401 | return -EFAULT; | |
402 | ||
403 | lock_sock(sk); | |
404 | ||
405 | switch (optname) { | |
406 | case L2CAP_OPTIONS: | |
64b4f8dc JH |
407 | /* LE sockets should use BT_SNDMTU/BT_RCVMTU, but since |
408 | * legacy ATT code depends on getsockopt for | |
409 | * L2CAP_OPTIONS we need to let this pass. | |
410 | */ | |
411 | if (bdaddr_type_is_le(chan->src_type) && | |
412 | chan->scid != L2CAP_CID_ATT) { | |
413 | err = -EINVAL; | |
414 | break; | |
415 | } | |
416 | ||
e3fb592b | 417 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
418 | opts.imtu = chan->imtu; |
419 | opts.omtu = chan->omtu; | |
420 | opts.flush_to = chan->flush_to; | |
421 | opts.mode = chan->mode; | |
47d1ec61 GP |
422 | opts.fcs = chan->fcs; |
423 | opts.max_tx = chan->max_tx; | |
6327eb98 | 424 | opts.txwin_size = chan->tx_win; |
99f4808d GP |
425 | |
426 | len = min_t(unsigned int, len, sizeof(opts)); | |
427 | if (copy_to_user(optval, (char *) &opts, len)) | |
428 | err = -EFAULT; | |
429 | ||
430 | break; | |
431 | ||
432 | case L2CAP_LM: | |
4343478f | 433 | switch (chan->sec_level) { |
99f4808d GP |
434 | case BT_SECURITY_LOW: |
435 | opt = L2CAP_LM_AUTH; | |
436 | break; | |
437 | case BT_SECURITY_MEDIUM: | |
438 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
439 | break; | |
440 | case BT_SECURITY_HIGH: | |
441 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
2d792818 | 442 | L2CAP_LM_SECURE; |
99f4808d | 443 | break; |
7d513e92 MH |
444 | case BT_SECURITY_FIPS: |
445 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
446 | L2CAP_LM_SECURE | L2CAP_LM_FIPS; | |
447 | break; | |
99f4808d GP |
448 | default: |
449 | opt = 0; | |
450 | break; | |
451 | } | |
452 | ||
43bd0f32 | 453 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
454 | opt |= L2CAP_LM_MASTER; |
455 | ||
ecf61bdb | 456 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
457 | opt |= L2CAP_LM_RELIABLE; |
458 | ||
459 | if (put_user(opt, (u32 __user *) optval)) | |
460 | err = -EFAULT; | |
7d513e92 | 461 | |
99f4808d GP |
462 | break; |
463 | ||
464 | case L2CAP_CONNINFO: | |
465 | if (sk->sk_state != BT_CONNECTED && | |
c5daa683 GP |
466 | !(sk->sk_state == BT_CONNECT2 && |
467 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
99f4808d GP |
468 | err = -ENOTCONN; |
469 | break; | |
470 | } | |
471 | ||
8d03e971 | 472 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
473 | cinfo.hci_handle = chan->conn->hcon->handle; |
474 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
475 | |
476 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
477 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
478 | err = -EFAULT; | |
479 | ||
480 | break; | |
481 | ||
482 | default: | |
483 | err = -ENOPROTOOPT; | |
484 | break; | |
485 | } | |
486 | ||
487 | release_sock(sk); | |
488 | return err; | |
489 | } | |
490 | ||
2d792818 GP |
491 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, |
492 | char __user *optval, int __user *optlen) | |
99f4808d GP |
493 | { |
494 | struct sock *sk = sock->sk; | |
4343478f | 495 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 496 | struct bt_security sec; |
14b12d0b | 497 | struct bt_power pwr; |
99f4808d GP |
498 | int len, err = 0; |
499 | ||
500 | BT_DBG("sk %p", sk); | |
501 | ||
502 | if (level == SOL_L2CAP) | |
503 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
504 | ||
505 | if (level != SOL_BLUETOOTH) | |
506 | return -ENOPROTOOPT; | |
507 | ||
508 | if (get_user(len, optlen)) | |
509 | return -EFAULT; | |
510 | ||
511 | lock_sock(sk); | |
512 | ||
513 | switch (optname) { | |
514 | case BT_SECURITY: | |
715ec005 | 515 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
e0c888ad | 516 | chan->chan_type != L2CAP_CHAN_FIXED && |
2d792818 | 517 | chan->chan_type != L2CAP_CHAN_RAW) { |
99f4808d GP |
518 | err = -EINVAL; |
519 | break; | |
520 | } | |
521 | ||
8f360119 | 522 | memset(&sec, 0, sizeof(sec)); |
85e34368 | 523 | if (chan->conn) { |
c6585a4d | 524 | sec.level = chan->conn->hcon->sec_level; |
99f4808d | 525 | |
85e34368 AE |
526 | if (sk->sk_state == BT_CONNECTED) |
527 | sec.key_size = chan->conn->hcon->enc_key_size; | |
528 | } else { | |
529 | sec.level = chan->sec_level; | |
530 | } | |
8f360119 | 531 | |
99f4808d GP |
532 | len = min_t(unsigned int, len, sizeof(sec)); |
533 | if (copy_to_user(optval, (char *) &sec, len)) | |
534 | err = -EFAULT; | |
535 | ||
536 | break; | |
537 | ||
538 | case BT_DEFER_SETUP: | |
539 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
540 | err = -EINVAL; | |
541 | break; | |
542 | } | |
543 | ||
c5daa683 GP |
544 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
545 | (u32 __user *) optval)) | |
99f4808d GP |
546 | err = -EFAULT; |
547 | ||
548 | break; | |
549 | ||
550 | case BT_FLUSHABLE: | |
d57b0e8b | 551 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
2d792818 | 552 | (u32 __user *) optval)) |
99f4808d GP |
553 | err = -EFAULT; |
554 | ||
555 | break; | |
556 | ||
14b12d0b JG |
557 | case BT_POWER: |
558 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
2d792818 | 559 | && sk->sk_type != SOCK_RAW) { |
14b12d0b JG |
560 | err = -EINVAL; |
561 | break; | |
562 | } | |
563 | ||
15770b1a | 564 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
565 | |
566 | len = min_t(unsigned int, len, sizeof(pwr)); | |
567 | if (copy_to_user(optval, (char *) &pwr, len)) | |
568 | err = -EFAULT; | |
569 | ||
570 | break; | |
571 | ||
2ea66482 | 572 | case BT_CHANNEL_POLICY: |
2ea66482 MM |
573 | if (put_user(chan->chan_policy, (u32 __user *) optval)) |
574 | err = -EFAULT; | |
575 | break; | |
576 | ||
1f435424 JH |
577 | case BT_SNDMTU: |
578 | if (!enable_lecoc) { | |
579 | err = -EPROTONOSUPPORT; | |
580 | break; | |
581 | } | |
582 | ||
583 | if (!bdaddr_type_is_le(chan->src_type)) { | |
584 | err = -EINVAL; | |
585 | break; | |
586 | } | |
587 | ||
588 | if (sk->sk_state != BT_CONNECTED) { | |
589 | err = -ENOTCONN; | |
590 | break; | |
591 | } | |
592 | ||
593 | if (put_user(chan->omtu, (u16 __user *) optval)) | |
594 | err = -EFAULT; | |
595 | break; | |
596 | ||
597 | case BT_RCVMTU: | |
598 | if (!enable_lecoc) { | |
599 | err = -EPROTONOSUPPORT; | |
600 | break; | |
601 | } | |
602 | ||
603 | if (!bdaddr_type_is_le(chan->src_type)) { | |
604 | err = -EINVAL; | |
605 | break; | |
606 | } | |
607 | ||
608 | if (put_user(chan->imtu, (u16 __user *) optval)) | |
609 | err = -EFAULT; | |
610 | break; | |
611 | ||
99f4808d GP |
612 | default: |
613 | err = -ENOPROTOOPT; | |
614 | break; | |
615 | } | |
616 | ||
617 | release_sock(sk); | |
618 | return err; | |
619 | } | |
620 | ||
682877c3 AG |
621 | static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu) |
622 | { | |
623 | switch (chan->scid) { | |
073d1cf3 | 624 | case L2CAP_CID_ATT: |
8c3a4f00 | 625 | if (mtu < L2CAP_LE_MIN_MTU) |
682877c3 AG |
626 | return false; |
627 | break; | |
628 | ||
629 | default: | |
630 | if (mtu < L2CAP_DEFAULT_MIN_MTU) | |
631 | return false; | |
632 | } | |
633 | ||
634 | return true; | |
635 | } | |
636 | ||
2d792818 GP |
637 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, |
638 | char __user *optval, unsigned int optlen) | |
33575df7 GP |
639 | { |
640 | struct sock *sk = sock->sk; | |
b4450035 | 641 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
642 | struct l2cap_options opts; |
643 | int len, err = 0; | |
644 | u32 opt; | |
645 | ||
646 | BT_DBG("sk %p", sk); | |
647 | ||
648 | lock_sock(sk); | |
649 | ||
650 | switch (optname) { | |
651 | case L2CAP_OPTIONS: | |
64b4f8dc JH |
652 | if (bdaddr_type_is_le(chan->src_type)) { |
653 | err = -EINVAL; | |
654 | break; | |
655 | } | |
656 | ||
33575df7 GP |
657 | if (sk->sk_state == BT_CONNECTED) { |
658 | err = -EINVAL; | |
659 | break; | |
660 | } | |
661 | ||
0c1bc5c6 GP |
662 | opts.imtu = chan->imtu; |
663 | opts.omtu = chan->omtu; | |
664 | opts.flush_to = chan->flush_to; | |
665 | opts.mode = chan->mode; | |
47d1ec61 GP |
666 | opts.fcs = chan->fcs; |
667 | opts.max_tx = chan->max_tx; | |
6327eb98 | 668 | opts.txwin_size = chan->tx_win; |
33575df7 GP |
669 | |
670 | len = min_t(unsigned int, sizeof(opts), optlen); | |
671 | if (copy_from_user((char *) &opts, optval, len)) { | |
672 | err = -EFAULT; | |
673 | break; | |
674 | } | |
675 | ||
6327eb98 | 676 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
33575df7 GP |
677 | err = -EINVAL; |
678 | break; | |
679 | } | |
680 | ||
682877c3 AG |
681 | if (!l2cap_valid_mtu(chan, opts.imtu)) { |
682 | err = -EINVAL; | |
683 | break; | |
684 | } | |
685 | ||
0c1bc5c6 GP |
686 | chan->mode = opts.mode; |
687 | switch (chan->mode) { | |
38319713 JH |
688 | case L2CAP_MODE_LE_FLOWCTL: |
689 | break; | |
33575df7 | 690 | case L2CAP_MODE_BASIC: |
c1360a1c | 691 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
692 | break; |
693 | case L2CAP_MODE_ERTM: | |
694 | case L2CAP_MODE_STREAMING: | |
695 | if (!disable_ertm) | |
696 | break; | |
697 | /* fall through */ | |
698 | default: | |
699 | err = -EINVAL; | |
700 | break; | |
701 | } | |
702 | ||
0c1bc5c6 GP |
703 | chan->imtu = opts.imtu; |
704 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
705 | chan->fcs = opts.fcs; |
706 | chan->max_tx = opts.max_tx; | |
6327eb98 | 707 | chan->tx_win = opts.txwin_size; |
12d59781 | 708 | chan->flush_to = opts.flush_to; |
33575df7 GP |
709 | break; |
710 | ||
711 | case L2CAP_LM: | |
712 | if (get_user(opt, (u32 __user *) optval)) { | |
713 | err = -EFAULT; | |
714 | break; | |
715 | } | |
716 | ||
7d513e92 MH |
717 | if (opt & L2CAP_LM_FIPS) { |
718 | err = -EINVAL; | |
719 | break; | |
720 | } | |
721 | ||
33575df7 | 722 | if (opt & L2CAP_LM_AUTH) |
4343478f | 723 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 724 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 725 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 726 | if (opt & L2CAP_LM_SECURE) |
4343478f | 727 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 728 | |
43bd0f32 AE |
729 | if (opt & L2CAP_LM_MASTER) |
730 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
731 | else | |
732 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
733 | |
734 | if (opt & L2CAP_LM_RELIABLE) | |
735 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
736 | else | |
737 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
738 | break; |
739 | ||
740 | default: | |
741 | err = -ENOPROTOOPT; | |
742 | break; | |
743 | } | |
744 | ||
745 | release_sock(sk); | |
746 | return err; | |
747 | } | |
748 | ||
2d792818 GP |
749 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, |
750 | char __user *optval, unsigned int optlen) | |
33575df7 GP |
751 | { |
752 | struct sock *sk = sock->sk; | |
4343478f | 753 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 754 | struct bt_security sec; |
14b12d0b | 755 | struct bt_power pwr; |
f1cb9af5 | 756 | struct l2cap_conn *conn; |
33575df7 GP |
757 | int len, err = 0; |
758 | u32 opt; | |
759 | ||
760 | BT_DBG("sk %p", sk); | |
761 | ||
762 | if (level == SOL_L2CAP) | |
763 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
764 | ||
765 | if (level != SOL_BLUETOOTH) | |
766 | return -ENOPROTOOPT; | |
767 | ||
768 | lock_sock(sk); | |
769 | ||
770 | switch (optname) { | |
771 | case BT_SECURITY: | |
715ec005 | 772 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
e0c888ad | 773 | chan->chan_type != L2CAP_CHAN_FIXED && |
2d792818 | 774 | chan->chan_type != L2CAP_CHAN_RAW) { |
33575df7 GP |
775 | err = -EINVAL; |
776 | break; | |
777 | } | |
778 | ||
779 | sec.level = BT_SECURITY_LOW; | |
780 | ||
781 | len = min_t(unsigned int, sizeof(sec), optlen); | |
782 | if (copy_from_user((char *) &sec, optval, len)) { | |
783 | err = -EFAULT; | |
784 | break; | |
785 | } | |
786 | ||
787 | if (sec.level < BT_SECURITY_LOW || | |
2d792818 | 788 | sec.level > BT_SECURITY_HIGH) { |
33575df7 GP |
789 | err = -EINVAL; |
790 | break; | |
791 | } | |
792 | ||
4343478f | 793 | chan->sec_level = sec.level; |
f1cb9af5 | 794 | |
0bee1d60 GP |
795 | if (!chan->conn) |
796 | break; | |
797 | ||
f1cb9af5 | 798 | conn = chan->conn; |
0bee1d60 GP |
799 | |
800 | /*change security for LE channels */ | |
073d1cf3 | 801 | if (chan->scid == L2CAP_CID_ATT) { |
f1cb9af5 VCG |
802 | if (!conn->hcon->out) { |
803 | err = -EINVAL; | |
804 | break; | |
805 | } | |
806 | ||
cc110922 | 807 | if (smp_conn_security(conn->hcon, sec.level)) |
f1cb9af5 | 808 | break; |
f1cb9af5 | 809 | sk->sk_state = BT_CONFIG; |
3542b854 | 810 | chan->state = BT_CONFIG; |
0bee1d60 | 811 | |
a7d7723a GP |
812 | /* or for ACL link */ |
813 | } else if ((sk->sk_state == BT_CONNECT2 && | |
2d792818 | 814 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) || |
a7d7723a GP |
815 | sk->sk_state == BT_CONNECTED) { |
816 | if (!l2cap_chan_check_security(chan)) | |
c5daa683 | 817 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); |
a7d7723a GP |
818 | else |
819 | sk->sk_state_change(sk); | |
0bee1d60 GP |
820 | } else { |
821 | err = -EINVAL; | |
f1cb9af5 | 822 | } |
33575df7 GP |
823 | break; |
824 | ||
825 | case BT_DEFER_SETUP: | |
826 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
827 | err = -EINVAL; | |
828 | break; | |
829 | } | |
830 | ||
831 | if (get_user(opt, (u32 __user *) optval)) { | |
832 | err = -EFAULT; | |
833 | break; | |
834 | } | |
835 | ||
bdc25783 | 836 | if (opt) { |
c5daa683 | 837 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
bdc25783 MH |
838 | set_bit(FLAG_DEFER_SETUP, &chan->flags); |
839 | } else { | |
c5daa683 | 840 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
bdc25783 MH |
841 | clear_bit(FLAG_DEFER_SETUP, &chan->flags); |
842 | } | |
33575df7 GP |
843 | break; |
844 | ||
845 | case BT_FLUSHABLE: | |
846 | if (get_user(opt, (u32 __user *) optval)) { | |
847 | err = -EFAULT; | |
848 | break; | |
849 | } | |
850 | ||
851 | if (opt > BT_FLUSHABLE_ON) { | |
852 | err = -EINVAL; | |
853 | break; | |
854 | } | |
855 | ||
856 | if (opt == BT_FLUSHABLE_OFF) { | |
c1f23a2b | 857 | conn = chan->conn; |
25985edc | 858 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
859 | No Flush support in the LM */ |
860 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
861 | err = -EINVAL; | |
862 | break; | |
863 | } | |
864 | } | |
865 | ||
d57b0e8b AE |
866 | if (opt) |
867 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
868 | else | |
869 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
870 | break; |
871 | ||
14b12d0b JG |
872 | case BT_POWER: |
873 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
2d792818 | 874 | chan->chan_type != L2CAP_CHAN_RAW) { |
14b12d0b JG |
875 | err = -EINVAL; |
876 | break; | |
877 | } | |
878 | ||
879 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
880 | ||
881 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
882 | if (copy_from_user((char *) &pwr, optval, len)) { | |
883 | err = -EFAULT; | |
884 | break; | |
885 | } | |
15770b1a AE |
886 | |
887 | if (pwr.force_active) | |
888 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
889 | else | |
890 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
891 | break; |
892 | ||
2ea66482 | 893 | case BT_CHANNEL_POLICY: |
2ea66482 MM |
894 | if (get_user(opt, (u32 __user *) optval)) { |
895 | err = -EFAULT; | |
896 | break; | |
897 | } | |
898 | ||
899 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { | |
900 | err = -EINVAL; | |
901 | break; | |
902 | } | |
903 | ||
904 | if (chan->mode != L2CAP_MODE_ERTM && | |
2d792818 | 905 | chan->mode != L2CAP_MODE_STREAMING) { |
2ea66482 MM |
906 | err = -EOPNOTSUPP; |
907 | break; | |
908 | } | |
909 | ||
910 | chan->chan_policy = (u8) opt; | |
3f7a56c4 MM |
911 | |
912 | if (sk->sk_state == BT_CONNECTED && | |
913 | chan->move_role == L2CAP_MOVE_ROLE_NONE) | |
914 | l2cap_move_start(chan); | |
915 | ||
14b12d0b JG |
916 | break; |
917 | ||
1f435424 JH |
918 | case BT_SNDMTU: |
919 | if (!enable_lecoc) { | |
920 | err = -EPROTONOSUPPORT; | |
921 | break; | |
922 | } | |
923 | ||
924 | if (!bdaddr_type_is_le(chan->src_type)) { | |
925 | err = -EINVAL; | |
926 | break; | |
927 | } | |
928 | ||
929 | /* Setting is not supported as it's the remote side that | |
930 | * decides this. | |
931 | */ | |
932 | err = -EPERM; | |
933 | break; | |
934 | ||
935 | case BT_RCVMTU: | |
936 | if (!enable_lecoc) { | |
937 | err = -EPROTONOSUPPORT; | |
938 | break; | |
939 | } | |
940 | ||
941 | if (!bdaddr_type_is_le(chan->src_type)) { | |
942 | err = -EINVAL; | |
943 | break; | |
944 | } | |
945 | ||
946 | if (sk->sk_state == BT_CONNECTED) { | |
947 | err = -EISCONN; | |
948 | break; | |
949 | } | |
950 | ||
951 | if (get_user(opt, (u32 __user *) optval)) { | |
952 | err = -EFAULT; | |
953 | break; | |
954 | } | |
955 | ||
956 | chan->imtu = opt; | |
957 | break; | |
958 | ||
33575df7 GP |
959 | default: |
960 | err = -ENOPROTOOPT; | |
961 | break; | |
962 | } | |
963 | ||
964 | release_sock(sk); | |
965 | return err; | |
966 | } | |
fd83ccdb | 967 | |
2d792818 GP |
968 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
969 | struct msghdr *msg, size_t len) | |
fd83ccdb GP |
970 | { |
971 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 972 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
973 | int err; |
974 | ||
975 | BT_DBG("sock %p, sk %p", sock, sk); | |
976 | ||
977 | err = sock_error(sk); | |
978 | if (err) | |
979 | return err; | |
980 | ||
981 | if (msg->msg_flags & MSG_OOB) | |
982 | return -EOPNOTSUPP; | |
983 | ||
a6a5568c | 984 | if (sk->sk_state != BT_CONNECTED) |
9a91a04a | 985 | return -ENOTCONN; |
fd83ccdb | 986 | |
e793dcf0 JH |
987 | lock_sock(sk); |
988 | err = bt_sock_wait_ready(sk, msg->msg_flags); | |
989 | release_sock(sk); | |
990 | if (err) | |
991 | return err; | |
992 | ||
a6a5568c | 993 | l2cap_chan_lock(chan); |
5e59b791 | 994 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
a6a5568c | 995 | l2cap_chan_unlock(chan); |
fd83ccdb | 996 | |
fd83ccdb GP |
997 | return err; |
998 | } | |
33575df7 | 999 | |
2d792818 GP |
1000 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
1001 | struct msghdr *msg, size_t len, int flags) | |
68983259 GP |
1002 | { |
1003 | struct sock *sk = sock->sk; | |
e328140f MM |
1004 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
1005 | int err; | |
68983259 GP |
1006 | |
1007 | lock_sock(sk); | |
1008 | ||
c5daa683 GP |
1009 | if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, |
1010 | &bt_sk(sk)->flags)) { | |
38319713 JH |
1011 | if (bdaddr_type_is_le(pi->chan->src_type)) { |
1012 | sk->sk_state = BT_CONNECTED; | |
1013 | pi->chan->state = BT_CONNECTED; | |
1014 | __l2cap_le_connect_rsp_defer(pi->chan); | |
1015 | } else { | |
1016 | sk->sk_state = BT_CONFIG; | |
1017 | pi->chan->state = BT_CONFIG; | |
1018 | __l2cap_connect_rsp_defer(pi->chan); | |
1019 | } | |
8c1d787b | 1020 | |
970871bc JH |
1021 | err = 0; |
1022 | goto done; | |
68983259 GP |
1023 | } |
1024 | ||
1025 | release_sock(sk); | |
1026 | ||
1027 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
1028 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
1029 | else | |
1030 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
1031 | ||
1032 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
1033 | return err; | |
1034 | ||
1035 | /* Attempt to put pending rx data in the socket buffer */ | |
1036 | ||
1037 | lock_sock(sk); | |
1038 | ||
1039 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
1040 | goto done; | |
1041 | ||
1042 | if (pi->rx_busy_skb) { | |
1043 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
1044 | pi->rx_busy_skb = NULL; | |
1045 | else | |
1046 | goto done; | |
1047 | } | |
1048 | ||
1049 | /* Restore data flow when half of the receive buffer is | |
1050 | * available. This avoids resending large numbers of | |
1051 | * frames. | |
1052 | */ | |
1053 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
1054 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 1055 | |
e328140f MM |
1056 | done: |
1057 | release_sock(sk); | |
1058 | return err; | |
68983259 GP |
1059 | } |
1060 | ||
05fc1576 GP |
1061 | /* Kill socket (only if zapped and orphan) |
1062 | * Must be called on unlocked socket. | |
1063 | */ | |
ba3bd0ee | 1064 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
1065 | { |
1066 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
1067 | return; | |
1068 | ||
e05dcc32 | 1069 | BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state)); |
05fc1576 GP |
1070 | |
1071 | /* Kill poor orphan */ | |
6ff5abbf | 1072 | |
4af66c69 | 1073 | l2cap_chan_put(l2cap_pi(sk)->chan); |
05fc1576 GP |
1074 | sock_set_flag(sk, SOCK_DEAD); |
1075 | sock_put(sk); | |
1076 | } | |
1077 | ||
dc25306b GP |
1078 | static int __l2cap_wait_ack(struct sock *sk) |
1079 | { | |
1080 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; | |
1081 | DECLARE_WAITQUEUE(wait, current); | |
1082 | int err = 0; | |
1083 | int timeo = HZ/5; | |
1084 | ||
1085 | add_wait_queue(sk_sleep(sk), &wait); | |
1086 | set_current_state(TASK_INTERRUPTIBLE); | |
1087 | while (chan->unacked_frames > 0 && chan->conn) { | |
1088 | if (!timeo) | |
1089 | timeo = HZ/5; | |
1090 | ||
1091 | if (signal_pending(current)) { | |
1092 | err = sock_intr_errno(timeo); | |
1093 | break; | |
1094 | } | |
1095 | ||
1096 | release_sock(sk); | |
1097 | timeo = schedule_timeout(timeo); | |
1098 | lock_sock(sk); | |
1099 | set_current_state(TASK_INTERRUPTIBLE); | |
1100 | ||
1101 | err = sock_error(sk); | |
1102 | if (err) | |
1103 | break; | |
1104 | } | |
1105 | set_current_state(TASK_RUNNING); | |
1106 | remove_wait_queue(sk_sleep(sk), &wait); | |
1107 | return err; | |
1108 | } | |
1109 | ||
dcba0dba GP |
1110 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
1111 | { | |
1112 | struct sock *sk = sock->sk; | |
7ddb6e0f | 1113 | struct l2cap_chan *chan; |
3df91ea2 | 1114 | struct l2cap_conn *conn; |
dcba0dba GP |
1115 | int err = 0; |
1116 | ||
1117 | BT_DBG("sock %p, sk %p", sock, sk); | |
1118 | ||
1119 | if (!sk) | |
1120 | return 0; | |
1121 | ||
7ddb6e0f | 1122 | chan = l2cap_pi(sk)->chan; |
3df91ea2 AE |
1123 | conn = chan->conn; |
1124 | ||
1125 | if (conn) | |
1126 | mutex_lock(&conn->chan_lock); | |
7ddb6e0f | 1127 | |
6be36555 | 1128 | l2cap_chan_lock(chan); |
dcba0dba | 1129 | lock_sock(sk); |
6be36555 | 1130 | |
dcba0dba | 1131 | if (!sk->sk_shutdown) { |
0c1bc5c6 | 1132 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
1133 | err = __l2cap_wait_ack(sk); |
1134 | ||
1135 | sk->sk_shutdown = SHUTDOWN_MASK; | |
3df91ea2 | 1136 | |
6be36555 | 1137 | release_sock(sk); |
0f852724 | 1138 | l2cap_chan_close(chan, 0); |
6be36555 | 1139 | lock_sock(sk); |
dcba0dba GP |
1140 | |
1141 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
1142 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
2d792818 | 1143 | sk->sk_lingertime); |
dcba0dba GP |
1144 | } |
1145 | ||
1146 | if (!err && sk->sk_err) | |
1147 | err = -sk->sk_err; | |
1148 | ||
1149 | release_sock(sk); | |
6be36555 | 1150 | l2cap_chan_unlock(chan); |
3df91ea2 AE |
1151 | |
1152 | if (conn) | |
1153 | mutex_unlock(&conn->chan_lock); | |
1154 | ||
dcba0dba GP |
1155 | return err; |
1156 | } | |
1157 | ||
554f05bb GP |
1158 | static int l2cap_sock_release(struct socket *sock) |
1159 | { | |
1160 | struct sock *sk = sock->sk; | |
1161 | int err; | |
1162 | ||
1163 | BT_DBG("sock %p, sk %p", sock, sk); | |
1164 | ||
1165 | if (!sk) | |
1166 | return 0; | |
1167 | ||
5b28d95c MY |
1168 | bt_sock_unlink(&l2cap_sk_list, sk); |
1169 | ||
554f05bb GP |
1170 | err = l2cap_sock_shutdown(sock, 2); |
1171 | ||
1172 | sock_orphan(sk); | |
1173 | l2cap_sock_kill(sk); | |
1174 | return err; | |
1175 | } | |
1176 | ||
c0df7f6e AE |
1177 | static void l2cap_sock_cleanup_listen(struct sock *parent) |
1178 | { | |
1179 | struct sock *sk; | |
1180 | ||
1181 | BT_DBG("parent %p", parent); | |
1182 | ||
1183 | /* Close not yet accepted channels */ | |
1184 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
1185 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; | |
1186 | ||
1187 | l2cap_chan_lock(chan); | |
1188 | __clear_chan_timer(chan); | |
1189 | l2cap_chan_close(chan, ECONNRESET); | |
1190 | l2cap_chan_unlock(chan); | |
1191 | ||
1192 | l2cap_sock_kill(sk); | |
1193 | } | |
1194 | } | |
1195 | ||
80b98027 | 1196 | static struct l2cap_chan *l2cap_sock_new_connection_cb(struct l2cap_chan *chan) |
80808e43 | 1197 | { |
80b98027 | 1198 | struct sock *sk, *parent = chan->data; |
80808e43 | 1199 | |
8ffb9290 GP |
1200 | lock_sock(parent); |
1201 | ||
53826692 GP |
1202 | /* Check for backlog size */ |
1203 | if (sk_acceptq_is_full(parent)) { | |
1204 | BT_DBG("backlog full %d", parent->sk_ack_backlog); | |
1205 | return NULL; | |
1206 | } | |
1207 | ||
80808e43 | 1208 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, |
2d792818 | 1209 | GFP_ATOMIC); |
80808e43 GP |
1210 | if (!sk) |
1211 | return NULL; | |
1212 | ||
d22015aa OP |
1213 | bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); |
1214 | ||
80808e43 GP |
1215 | l2cap_sock_init(sk, parent); |
1216 | ||
644912e1 GP |
1217 | bt_accept_enqueue(parent, sk); |
1218 | ||
8ffb9290 GP |
1219 | release_sock(parent); |
1220 | ||
80808e43 GP |
1221 | return l2cap_pi(sk)->chan; |
1222 | } | |
1223 | ||
80b98027 | 1224 | static int l2cap_sock_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb) |
23070494 | 1225 | { |
80b98027 | 1226 | struct sock *sk = chan->data; |
84b34d98 | 1227 | int err; |
e328140f | 1228 | |
6be36555 AE |
1229 | lock_sock(sk); |
1230 | ||
84b34d98 | 1231 | if (l2cap_pi(sk)->rx_busy_skb) { |
6be36555 AE |
1232 | err = -ENOMEM; |
1233 | goto done; | |
1234 | } | |
e328140f MM |
1235 | |
1236 | err = sock_queue_rcv_skb(sk, skb); | |
1237 | ||
1238 | /* For ERTM, handle one skb that doesn't fit into the recv | |
1239 | * buffer. This is important to do because the data frames | |
1240 | * have already been acked, so the skb cannot be discarded. | |
1241 | * | |
1242 | * Notify the l2cap core that the buffer is full, so the | |
1243 | * LOCAL_BUSY state is entered and no more frames are | |
1244 | * acked and reassembled until there is buffer space | |
1245 | * available. | |
1246 | */ | |
84b34d98 MH |
1247 | if (err < 0 && chan->mode == L2CAP_MODE_ERTM) { |
1248 | l2cap_pi(sk)->rx_busy_skb = skb; | |
1249 | l2cap_chan_busy(chan, 1); | |
e328140f MM |
1250 | err = 0; |
1251 | } | |
23070494 | 1252 | |
6be36555 AE |
1253 | done: |
1254 | release_sock(sk); | |
1255 | ||
e328140f | 1256 | return err; |
23070494 GP |
1257 | } |
1258 | ||
80b98027 | 1259 | static void l2cap_sock_close_cb(struct l2cap_chan *chan) |
ba3bd0ee | 1260 | { |
80b98027 | 1261 | struct sock *sk = chan->data; |
ba3bd0ee GP |
1262 | |
1263 | l2cap_sock_kill(sk); | |
1264 | } | |
1265 | ||
c0df7f6e AE |
1266 | static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err) |
1267 | { | |
1268 | struct sock *sk = chan->data; | |
1269 | struct sock *parent; | |
1270 | ||
1271 | lock_sock(sk); | |
1272 | ||
1273 | parent = bt_sk(sk)->parent; | |
1274 | ||
1275 | sock_set_flag(sk, SOCK_ZAPPED); | |
1276 | ||
1277 | switch (chan->state) { | |
1278 | case BT_OPEN: | |
1279 | case BT_BOUND: | |
1280 | case BT_CLOSED: | |
1281 | break; | |
1282 | case BT_LISTEN: | |
1283 | l2cap_sock_cleanup_listen(sk); | |
1284 | sk->sk_state = BT_CLOSED; | |
1285 | chan->state = BT_CLOSED; | |
1286 | ||
1287 | break; | |
1288 | default: | |
1289 | sk->sk_state = BT_CLOSED; | |
1290 | chan->state = BT_CLOSED; | |
1291 | ||
1292 | sk->sk_err = err; | |
1293 | ||
1294 | if (parent) { | |
1295 | bt_accept_unlink(sk); | |
1296 | parent->sk_data_ready(parent, 0); | |
1297 | } else { | |
1298 | sk->sk_state_change(sk); | |
1299 | } | |
1300 | ||
1301 | break; | |
1302 | } | |
1303 | ||
1304 | release_sock(sk); | |
1305 | } | |
1306 | ||
53f52121 GP |
1307 | static void l2cap_sock_state_change_cb(struct l2cap_chan *chan, int state, |
1308 | int err) | |
89bc500e | 1309 | { |
80b98027 | 1310 | struct sock *sk = chan->data; |
89bc500e GP |
1311 | |
1312 | sk->sk_state = state; | |
53f52121 GP |
1313 | |
1314 | if (err) | |
1315 | sk->sk_err = err; | |
89bc500e GP |
1316 | } |
1317 | ||
2f7719ce | 1318 | static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, |
90338947 | 1319 | unsigned long len, int nb) |
2f7719ce | 1320 | { |
0f2c6153 | 1321 | struct sock *sk = chan->data; |
90338947 GP |
1322 | struct sk_buff *skb; |
1323 | int err; | |
1324 | ||
a6a5568c | 1325 | l2cap_chan_unlock(chan); |
0f2c6153 | 1326 | skb = bt_skb_send_alloc(sk, len, nb, &err); |
a6a5568c MM |
1327 | l2cap_chan_lock(chan); |
1328 | ||
90338947 GP |
1329 | if (!skb) |
1330 | return ERR_PTR(err); | |
2f7719ce | 1331 | |
0e790c64 GP |
1332 | bt_cb(skb)->chan = chan; |
1333 | ||
90338947 | 1334 | return skb; |
2f7719ce AE |
1335 | } |
1336 | ||
54a59aa2 AE |
1337 | static void l2cap_sock_ready_cb(struct l2cap_chan *chan) |
1338 | { | |
1339 | struct sock *sk = chan->data; | |
1340 | struct sock *parent; | |
1341 | ||
1342 | lock_sock(sk); | |
1343 | ||
1344 | parent = bt_sk(sk)->parent; | |
1345 | ||
1346 | BT_DBG("sk %p, parent %p", sk, parent); | |
1347 | ||
1348 | sk->sk_state = BT_CONNECTED; | |
1349 | sk->sk_state_change(sk); | |
1350 | ||
1351 | if (parent) | |
1352 | parent->sk_data_ready(parent, 0); | |
1353 | ||
1354 | release_sock(sk); | |
1355 | } | |
1356 | ||
2dc4e510 GP |
1357 | static void l2cap_sock_defer_cb(struct l2cap_chan *chan) |
1358 | { | |
acdcabf5 GP |
1359 | struct sock *parent, *sk = chan->data; |
1360 | ||
1361 | lock_sock(sk); | |
2dc4e510 | 1362 | |
acdcabf5 | 1363 | parent = bt_sk(sk)->parent; |
2dc4e510 GP |
1364 | if (parent) |
1365 | parent->sk_data_ready(parent, 0); | |
acdcabf5 GP |
1366 | |
1367 | release_sock(sk); | |
2dc4e510 GP |
1368 | } |
1369 | ||
d97c899b MH |
1370 | static void l2cap_sock_resume_cb(struct l2cap_chan *chan) |
1371 | { | |
1372 | struct sock *sk = chan->data; | |
1373 | ||
1374 | clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); | |
1375 | sk->sk_state_change(sk); | |
1376 | } | |
1377 | ||
5ec1bbe5 GP |
1378 | static void l2cap_sock_set_shutdown_cb(struct l2cap_chan *chan) |
1379 | { | |
1380 | struct sock *sk = chan->data; | |
1381 | ||
1382 | lock_sock(sk); | |
1383 | sk->sk_shutdown = SHUTDOWN_MASK; | |
1384 | release_sock(sk); | |
1385 | } | |
1386 | ||
8d836d71 GP |
1387 | static long l2cap_sock_get_sndtimeo_cb(struct l2cap_chan *chan) |
1388 | { | |
1389 | struct sock *sk = chan->data; | |
1390 | ||
1391 | return sk->sk_sndtimeo; | |
1392 | } | |
1393 | ||
837776f7 JH |
1394 | static void l2cap_sock_suspend_cb(struct l2cap_chan *chan) |
1395 | { | |
1396 | struct sock *sk = chan->data; | |
1397 | ||
1398 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); | |
1399 | sk->sk_state_change(sk); | |
1400 | } | |
1401 | ||
80808e43 GP |
1402 | static struct l2cap_ops l2cap_chan_ops = { |
1403 | .name = "L2CAP Socket Interface", | |
1404 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 1405 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 1406 | .close = l2cap_sock_close_cb, |
c0df7f6e | 1407 | .teardown = l2cap_sock_teardown_cb, |
89bc500e | 1408 | .state_change = l2cap_sock_state_change_cb, |
54a59aa2 | 1409 | .ready = l2cap_sock_ready_cb, |
2dc4e510 | 1410 | .defer = l2cap_sock_defer_cb, |
d97c899b | 1411 | .resume = l2cap_sock_resume_cb, |
837776f7 | 1412 | .suspend = l2cap_sock_suspend_cb, |
5ec1bbe5 | 1413 | .set_shutdown = l2cap_sock_set_shutdown_cb, |
8d836d71 | 1414 | .get_sndtimeo = l2cap_sock_get_sndtimeo_cb, |
2f7719ce | 1415 | .alloc_skb = l2cap_sock_alloc_skb_cb, |
80808e43 GP |
1416 | }; |
1417 | ||
bb58f747 GP |
1418 | static void l2cap_sock_destruct(struct sock *sk) |
1419 | { | |
1420 | BT_DBG("sk %p", sk); | |
1421 | ||
23d3a869 SL |
1422 | if (l2cap_pi(sk)->chan) |
1423 | l2cap_chan_put(l2cap_pi(sk)->chan); | |
84b34d98 | 1424 | |
e328140f MM |
1425 | if (l2cap_pi(sk)->rx_busy_skb) { |
1426 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
1427 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
1428 | } | |
1429 | ||
bb58f747 GP |
1430 | skb_queue_purge(&sk->sk_receive_queue); |
1431 | skb_queue_purge(&sk->sk_write_queue); | |
1432 | } | |
1433 | ||
2edf870d MH |
1434 | static void l2cap_skb_msg_name(struct sk_buff *skb, void *msg_name, |
1435 | int *msg_namelen) | |
1436 | { | |
342dfc30 | 1437 | DECLARE_SOCKADDR(struct sockaddr_l2 *, la, msg_name); |
2edf870d MH |
1438 | |
1439 | memset(la, 0, sizeof(struct sockaddr_l2)); | |
1440 | la->l2_family = AF_BLUETOOTH; | |
1441 | la->l2_psm = bt_cb(skb)->psm; | |
1442 | bacpy(&la->l2_bdaddr, &bt_cb(skb)->bdaddr); | |
1443 | ||
1444 | *msg_namelen = sizeof(struct sockaddr_l2); | |
1445 | } | |
1446 | ||
80808e43 | 1447 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 | 1448 | { |
84b34d98 | 1449 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
bb58f747 GP |
1450 | |
1451 | BT_DBG("sk %p", sk); | |
1452 | ||
1453 | if (parent) { | |
b4450035 GP |
1454 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
1455 | ||
bb58f747 | 1456 | sk->sk_type = parent->sk_type; |
c5daa683 | 1457 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
bb58f747 | 1458 | |
715ec005 | 1459 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
1460 | chan->imtu = pchan->imtu; |
1461 | chan->omtu = pchan->omtu; | |
b4450035 | 1462 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 1463 | chan->mode = pchan->mode; |
47d1ec61 GP |
1464 | chan->fcs = pchan->fcs; |
1465 | chan->max_tx = pchan->max_tx; | |
1466 | chan->tx_win = pchan->tx_win; | |
6b3c7104 | 1467 | chan->tx_win_max = pchan->tx_win_max; |
4343478f | 1468 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 1469 | chan->flags = pchan->flags; |
0cd75f7e JH |
1470 | chan->tx_credits = pchan->tx_credits; |
1471 | chan->rx_credits = pchan->rx_credits; | |
6230c9b4 PM |
1472 | |
1473 | security_sk_clone(parent, sk); | |
bb58f747 | 1474 | } else { |
715ec005 GP |
1475 | switch (sk->sk_type) { |
1476 | case SOCK_RAW: | |
1477 | chan->chan_type = L2CAP_CHAN_RAW; | |
1478 | break; | |
1479 | case SOCK_DGRAM: | |
1480 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
2edf870d | 1481 | bt_sk(sk)->skb_msg_name = l2cap_skb_msg_name; |
715ec005 GP |
1482 | break; |
1483 | case SOCK_SEQPACKET: | |
1484 | case SOCK_STREAM: | |
1485 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
1486 | break; | |
1487 | } | |
1488 | ||
0c1bc5c6 GP |
1489 | chan->imtu = L2CAP_DEFAULT_MTU; |
1490 | chan->omtu = 0; | |
bb58f747 | 1491 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 1492 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 1493 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 1494 | } else { |
0c1bc5c6 | 1495 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 1496 | } |
bd4b1653 AE |
1497 | |
1498 | l2cap_chan_set_defaults(chan); | |
bb58f747 GP |
1499 | } |
1500 | ||
1501 | /* Default config options */ | |
0c1bc5c6 | 1502 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
1503 | |
1504 | chan->data = sk; | |
1505 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
1506 | } |
1507 | ||
1508 | static struct proto l2cap_proto = { | |
1509 | .name = "L2CAP", | |
1510 | .owner = THIS_MODULE, | |
1511 | .obj_size = sizeof(struct l2cap_pinfo) | |
1512 | }; | |
1513 | ||
2d792818 GP |
1514 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, |
1515 | int proto, gfp_t prio) | |
bb58f747 GP |
1516 | { |
1517 | struct sock *sk; | |
dc50a06d | 1518 | struct l2cap_chan *chan; |
bb58f747 GP |
1519 | |
1520 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
1521 | if (!sk) | |
1522 | return NULL; | |
1523 | ||
1524 | sock_init_data(sock, sk); | |
1525 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1526 | ||
1527 | sk->sk_destruct = l2cap_sock_destruct; | |
ba13ccd9 | 1528 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
bb58f747 GP |
1529 | |
1530 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1531 | ||
1532 | sk->sk_protocol = proto; | |
1533 | sk->sk_state = BT_OPEN; | |
1534 | ||
eef1d9b6 | 1535 | chan = l2cap_chan_create(); |
dc50a06d | 1536 | if (!chan) { |
49dfbb91 | 1537 | sk_free(sk); |
dc50a06d GP |
1538 | return NULL; |
1539 | } | |
1540 | ||
61d6ef3e MM |
1541 | l2cap_chan_hold(chan); |
1542 | ||
dc50a06d GP |
1543 | l2cap_pi(sk)->chan = chan; |
1544 | ||
bb58f747 GP |
1545 | return sk; |
1546 | } | |
1547 | ||
1548 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1549 | int kern) | |
1550 | { | |
1551 | struct sock *sk; | |
1552 | ||
1553 | BT_DBG("sock %p", sock); | |
1554 | ||
1555 | sock->state = SS_UNCONNECTED; | |
1556 | ||
1557 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
2d792818 | 1558 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) |
bb58f747 GP |
1559 | return -ESOCKTNOSUPPORT; |
1560 | ||
1561 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1562 | return -EPERM; | |
1563 | ||
1564 | sock->ops = &l2cap_sock_ops; | |
1565 | ||
1566 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1567 | if (!sk) | |
1568 | return -ENOMEM; | |
1569 | ||
1570 | l2cap_sock_init(sk, NULL); | |
5b28d95c | 1571 | bt_sock_link(&l2cap_sk_list, sk); |
bb58f747 GP |
1572 | return 0; |
1573 | } | |
1574 | ||
cf2f90f5 | 1575 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1576 | .family = PF_BLUETOOTH, |
1577 | .owner = THIS_MODULE, | |
1578 | .release = l2cap_sock_release, | |
1579 | .bind = l2cap_sock_bind, | |
1580 | .connect = l2cap_sock_connect, | |
1581 | .listen = l2cap_sock_listen, | |
1582 | .accept = l2cap_sock_accept, | |
1583 | .getname = l2cap_sock_getname, | |
1584 | .sendmsg = l2cap_sock_sendmsg, | |
1585 | .recvmsg = l2cap_sock_recvmsg, | |
1586 | .poll = bt_sock_poll, | |
1587 | .ioctl = bt_sock_ioctl, | |
1588 | .mmap = sock_no_mmap, | |
1589 | .socketpair = sock_no_socketpair, | |
1590 | .shutdown = l2cap_sock_shutdown, | |
1591 | .setsockopt = l2cap_sock_setsockopt, | |
1592 | .getsockopt = l2cap_sock_getsockopt | |
1593 | }; | |
1594 | ||
bb58f747 GP |
1595 | static const struct net_proto_family l2cap_sock_family_ops = { |
1596 | .family = PF_BLUETOOTH, | |
1597 | .owner = THIS_MODULE, | |
1598 | .create = l2cap_sock_create, | |
1599 | }; | |
1600 | ||
1601 | int __init l2cap_init_sockets(void) | |
1602 | { | |
e2174ca4 | 1603 | int err; |
bb58f747 | 1604 | |
e2174ca4 GP |
1605 | err = proto_register(&l2cap_proto, 0); |
1606 | if (err < 0) | |
1607 | return err; | |
bb58f747 | 1608 | |
e2174ca4 | 1609 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
5b28d95c MY |
1610 | if (err < 0) { |
1611 | BT_ERR("L2CAP socket registration failed"); | |
e2174ca4 | 1612 | goto error; |
5b28d95c MY |
1613 | } |
1614 | ||
b0316615 | 1615 | err = bt_procfs_init(&init_net, "l2cap", &l2cap_sk_list, |
2d792818 | 1616 | NULL); |
5b28d95c MY |
1617 | if (err < 0) { |
1618 | BT_ERR("Failed to create L2CAP proc file"); | |
1619 | bt_sock_unregister(BTPROTO_L2CAP); | |
1620 | goto error; | |
1621 | } | |
bb58f747 | 1622 | |
e2174ca4 | 1623 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1624 | |
e2174ca4 | 1625 | return 0; |
bb58f747 GP |
1626 | |
1627 | error: | |
e2174ca4 GP |
1628 | proto_unregister(&l2cap_proto); |
1629 | return err; | |
bb58f747 GP |
1630 | } |
1631 | ||
1632 | void l2cap_cleanup_sockets(void) | |
1633 | { | |
5b28d95c | 1634 | bt_procfs_cleanup(&init_net, "l2cap"); |
5e9d7f86 | 1635 | bt_sock_unregister(BTPROTO_L2CAP); |
e2174ca4 | 1636 | proto_unregister(&l2cap_proto); |
bb58f747 | 1637 | } |
9149761a JH |
1638 | |
1639 | module_param(enable_lecoc, bool, 0644); | |
1640 | MODULE_PARM_DESC(enable_lecoc, "Enable support for LE CoC"); |