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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 | |
5b28d95c MY |
39 | static struct bt_sock_list l2cap_sk_list = { |
40 | .lock = __RW_LOCK_UNLOCKED(l2cap_sk_list.lock) | |
41 | }; | |
42 | ||
cf2f90f5 | 43 | static const struct proto_ops l2cap_sock_ops; |
80808e43 | 44 | static void l2cap_sock_init(struct sock *sk, struct sock *parent); |
2d792818 GP |
45 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, |
46 | int proto, gfp_t prio); | |
cf2f90f5 | 47 | |
b3916db3 DH |
48 | bool l2cap_is_socket(struct socket *sock) |
49 | { | |
50 | return sock && sock->ops == &l2cap_sock_ops; | |
51 | } | |
52 | EXPORT_SYMBOL(l2cap_is_socket); | |
53 | ||
4946096d JH |
54 | static int l2cap_validate_bredr_psm(u16 psm) |
55 | { | |
56 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
57 | if ((psm & 0x0101) != 0x0001) | |
58 | return -EINVAL; | |
59 | ||
60 | /* Restrict usage of well-known PSMs */ | |
61 | if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) | |
62 | return -EACCES; | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
67 | static int l2cap_validate_le_psm(u16 psm) | |
68 | { | |
69 | /* Valid LE_PSM ranges are defined only until 0x00ff */ | |
70 | if (psm > 0x00ff) | |
71 | return -EINVAL; | |
72 | ||
73 | /* Restrict fixed, SIG assigned PSM values to CAP_NET_BIND_SERVICE */ | |
74 | if (psm <= 0x007f && !capable(CAP_NET_BIND_SERVICE)) | |
75 | return -EACCES; | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
af6bcd82 GP |
80 | static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) |
81 | { | |
82 | struct sock *sk = sock->sk; | |
4343478f | 83 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
84 | struct sockaddr_l2 la; |
85 | int len, err = 0; | |
86 | ||
87 | BT_DBG("sk %p", sk); | |
88 | ||
89 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
90 | return -EINVAL; | |
91 | ||
92 | memset(&la, 0, sizeof(la)); | |
93 | len = min_t(unsigned int, sizeof(la), alen); | |
94 | memcpy(&la, addr, len); | |
95 | ||
b62f328b | 96 | if (la.l2_cid && la.l2_psm) |
af6bcd82 GP |
97 | return -EINVAL; |
98 | ||
80c1a2e7 JH |
99 | if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) |
100 | return -EINVAL; | |
101 | ||
21626e62 JH |
102 | if (la.l2_cid) { |
103 | /* When the socket gets created it defaults to | |
104 | * CHAN_CONN_ORIENTED, so we need to overwrite the | |
105 | * default here. | |
106 | */ | |
107 | chan->chan_type = L2CAP_CHAN_FIXED; | |
108 | chan->omtu = L2CAP_DEFAULT_MTU; | |
109 | } | |
110 | ||
bfe4655f | 111 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
bfe4655f | 112 | /* We only allow ATT user space socket */ |
9149761a | 113 | if (la.l2_cid && |
dcf4adbf | 114 | la.l2_cid != cpu_to_le16(L2CAP_CID_ATT)) |
bfe4655f JH |
115 | return -EINVAL; |
116 | } | |
117 | ||
af6bcd82 GP |
118 | lock_sock(sk); |
119 | ||
120 | if (sk->sk_state != BT_OPEN) { | |
121 | err = -EBADFD; | |
122 | goto done; | |
123 | } | |
124 | ||
125 | if (la.l2_psm) { | |
126 | __u16 psm = __le16_to_cpu(la.l2_psm); | |
127 | ||
4946096d JH |
128 | if (la.l2_bdaddr_type == BDADDR_BREDR) |
129 | err = l2cap_validate_bredr_psm(psm); | |
130 | else | |
131 | err = l2cap_validate_le_psm(psm); | |
af6bcd82 | 132 | |
4946096d | 133 | if (err) |
af6bcd82 | 134 | goto done; |
af6bcd82 GP |
135 | } |
136 | ||
9e4425ff | 137 | if (la.l2_cid) |
6e4aff10 | 138 | err = l2cap_add_scid(chan, __le16_to_cpu(la.l2_cid)); |
9e4425ff GP |
139 | else |
140 | err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); | |
af6bcd82 | 141 | |
9e4425ff GP |
142 | if (err < 0) |
143 | goto done; | |
af6bcd82 | 144 | |
6a974b50 | 145 | switch (chan->chan_type) { |
3124b843 MH |
146 | case L2CAP_CHAN_CONN_LESS: |
147 | if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_3DSP) | |
148 | chan->sec_level = BT_SECURITY_SDP; | |
149 | break; | |
6a974b50 MH |
150 | case L2CAP_CHAN_CONN_ORIENTED: |
151 | if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_SDP || | |
152 | __le16_to_cpu(la.l2_psm) == L2CAP_PSM_RFCOMM) | |
153 | chan->sec_level = BT_SECURITY_SDP; | |
154 | break; | |
cb6ca8e1 JH |
155 | case L2CAP_CHAN_RAW: |
156 | chan->sec_level = BT_SECURITY_SDP; | |
157 | break; | |
6a974b50 | 158 | } |
b62f328b | 159 | |
7eafc59e | 160 | bacpy(&chan->src, &la.l2_bdaddr); |
4f1654e0 | 161 | chan->src_type = la.l2_bdaddr_type; |
89bc500e | 162 | |
38319713 | 163 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
0ce43ce6 | 164 | chan->mode = L2CAP_MODE_LE_FLOWCTL; |
38319713 | 165 | |
89bc500e | 166 | chan->state = BT_BOUND; |
9e4425ff | 167 | sk->sk_state = BT_BOUND; |
af6bcd82 GP |
168 | |
169 | done: | |
170 | release_sock(sk); | |
171 | return err; | |
172 | } | |
173 | ||
2d792818 GP |
174 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, |
175 | int alen, int flags) | |
4e34c50b GP |
176 | { |
177 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 178 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
4e34c50b GP |
179 | struct sockaddr_l2 la; |
180 | int len, err = 0; | |
181 | ||
182 | BT_DBG("sk %p", sk); | |
183 | ||
184 | if (!addr || alen < sizeof(addr->sa_family) || | |
185 | addr->sa_family != AF_BLUETOOTH) | |
186 | return -EINVAL; | |
187 | ||
188 | memset(&la, 0, sizeof(la)); | |
189 | len = min_t(unsigned int, sizeof(la), alen); | |
190 | memcpy(&la, addr, len); | |
191 | ||
acd7d370 | 192 | if (la.l2_cid && la.l2_psm) |
4e34c50b GP |
193 | return -EINVAL; |
194 | ||
80c1a2e7 JH |
195 | if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) |
196 | return -EINVAL; | |
197 | ||
eb622495 JH |
198 | /* Check that the socket wasn't bound to something that |
199 | * conflicts with the address given to connect(). If chan->src | |
200 | * is BDADDR_ANY it means bind() was never used, in which case | |
201 | * chan->src_type and la.l2_bdaddr_type do not need to match. | |
202 | */ | |
203 | if (chan->src_type == BDADDR_BREDR && bacmp(&chan->src, BDADDR_ANY) && | |
204 | bdaddr_type_is_le(la.l2_bdaddr_type)) { | |
205 | /* Old user space versions will try to incorrectly bind | |
206 | * the ATT socket using BDADDR_BREDR. We need to accept | |
207 | * this and fix up the source address type only when | |
208 | * both the source CID and destination CID indicate | |
209 | * ATT. Anything else is an invalid combination. | |
210 | */ | |
211 | if (chan->scid != L2CAP_CID_ATT || | |
dcf4adbf | 212 | la.l2_cid != cpu_to_le16(L2CAP_CID_ATT)) |
eb622495 JH |
213 | return -EINVAL; |
214 | ||
215 | /* We don't have the hdev available here to make a | |
216 | * better decision on random vs public, but since all | |
217 | * user space versions that exhibit this issue anyway do | |
218 | * not support random local addresses assuming public | |
219 | * here is good enough. | |
220 | */ | |
221 | chan->src_type = BDADDR_LE_PUBLIC; | |
222 | } | |
1f209383 JH |
223 | |
224 | if (chan->src_type != BDADDR_BREDR && la.l2_bdaddr_type == BDADDR_BREDR) | |
225 | return -EINVAL; | |
226 | ||
bfe4655f | 227 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
bfe4655f | 228 | /* We only allow ATT user space socket */ |
9149761a | 229 | if (la.l2_cid && |
dcf4adbf | 230 | la.l2_cid != cpu_to_le16(L2CAP_CID_ATT)) |
bfe4655f JH |
231 | return -EINVAL; |
232 | } | |
233 | ||
38319713 | 234 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
0ce43ce6 | 235 | chan->mode = L2CAP_MODE_LE_FLOWCTL; |
38319713 | 236 | |
6e4aff10 | 237 | err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid), |
8e9f9892 | 238 | &la.l2_bdaddr, la.l2_bdaddr_type); |
4e34c50b | 239 | if (err) |
b3fb611e | 240 | return err; |
4e34c50b | 241 | |
6be36555 AE |
242 | lock_sock(sk); |
243 | ||
4e34c50b | 244 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
2d792818 | 245 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
b3fb611e AE |
246 | |
247 | release_sock(sk); | |
248 | ||
4e34c50b GP |
249 | return err; |
250 | } | |
251 | ||
af6bcd82 GP |
252 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
253 | { | |
254 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 255 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
256 | int err = 0; |
257 | ||
258 | BT_DBG("sk %p backlog %d", sk, backlog); | |
259 | ||
260 | lock_sock(sk); | |
261 | ||
6b3af733 | 262 | if (sk->sk_state != BT_BOUND) { |
af6bcd82 GP |
263 | err = -EBADFD; |
264 | goto done; | |
265 | } | |
266 | ||
6b3af733 MH |
267 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM) { |
268 | err = -EINVAL; | |
269 | goto done; | |
270 | } | |
271 | ||
0c1bc5c6 | 272 | switch (chan->mode) { |
af6bcd82 | 273 | case L2CAP_MODE_BASIC: |
38319713 | 274 | case L2CAP_MODE_LE_FLOWCTL: |
af6bcd82 GP |
275 | break; |
276 | case L2CAP_MODE_ERTM: | |
277 | case L2CAP_MODE_STREAMING: | |
278 | if (!disable_ertm) | |
279 | break; | |
280 | /* fall through */ | |
281 | default: | |
282 | err = -ENOTSUPP; | |
283 | goto done; | |
284 | } | |
285 | ||
af6bcd82 GP |
286 | sk->sk_max_ack_backlog = backlog; |
287 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
288 | |
289 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
290 | sk->sk_state = BT_LISTEN; |
291 | ||
292 | done: | |
293 | release_sock(sk); | |
294 | return err; | |
295 | } | |
296 | ||
2d792818 GP |
297 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, |
298 | int flags) | |
c47b7c72 GP |
299 | { |
300 | DECLARE_WAITQUEUE(wait, current); | |
301 | struct sock *sk = sock->sk, *nsk; | |
302 | long timeo; | |
303 | int err = 0; | |
304 | ||
305 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
306 | ||
c47b7c72 GP |
307 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
308 | ||
309 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
310 | ||
311 | /* Wait for an incoming connection. (wake-one). */ | |
312 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 313 | while (1) { |
c47b7c72 | 314 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
315 | |
316 | if (sk->sk_state != BT_LISTEN) { | |
317 | err = -EBADFD; | |
c47b7c72 GP |
318 | break; |
319 | } | |
320 | ||
f9a3c20a PH |
321 | nsk = bt_accept_dequeue(sk, newsock); |
322 | if (nsk) | |
323 | break; | |
c47b7c72 | 324 | |
f9a3c20a PH |
325 | if (!timeo) { |
326 | err = -EAGAIN; | |
c47b7c72 GP |
327 | break; |
328 | } | |
329 | ||
330 | if (signal_pending(current)) { | |
331 | err = sock_intr_errno(timeo); | |
332 | break; | |
333 | } | |
f9a3c20a PH |
334 | |
335 | release_sock(sk); | |
336 | timeo = schedule_timeout(timeo); | |
337 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 338 | } |
f9a3c20a | 339 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
340 | remove_wait_queue(sk_sleep(sk), &wait); |
341 | ||
342 | if (err) | |
343 | goto done; | |
344 | ||
345 | newsock->state = SS_CONNECTED; | |
346 | ||
347 | BT_DBG("new socket %p", nsk); | |
348 | ||
349 | done: | |
350 | release_sock(sk); | |
351 | return err; | |
352 | } | |
353 | ||
2d792818 GP |
354 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, |
355 | int *len, int peer) | |
d7175d55 GP |
356 | { |
357 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
358 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 359 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
360 | |
361 | BT_DBG("sock %p, sk %p", sock, sk); | |
362 | ||
b783fbc3 JH |
363 | if (peer && sk->sk_state != BT_CONNECTED) |
364 | return -ENOTCONN; | |
365 | ||
792039c7 | 366 | memset(la, 0, sizeof(struct sockaddr_l2)); |
d7175d55 GP |
367 | addr->sa_family = AF_BLUETOOTH; |
368 | *len = sizeof(struct sockaddr_l2); | |
369 | ||
d7e5e76b JH |
370 | la->l2_psm = chan->psm; |
371 | ||
d7175d55 | 372 | if (peer) { |
7eafc59e | 373 | bacpy(&la->l2_bdaddr, &chan->dst); |
fe4128e0 | 374 | la->l2_cid = cpu_to_le16(chan->dcid); |
4f1654e0 | 375 | la->l2_bdaddr_type = chan->dst_type; |
d7175d55 | 376 | } else { |
7eafc59e | 377 | bacpy(&la->l2_bdaddr, &chan->src); |
fe4128e0 | 378 | la->l2_cid = cpu_to_le16(chan->scid); |
4f1654e0 | 379 | la->l2_bdaddr_type = chan->src_type; |
d7175d55 GP |
380 | } |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
2d792818 GP |
385 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, |
386 | char __user *optval, int __user *optlen) | |
99f4808d GP |
387 | { |
388 | struct sock *sk = sock->sk; | |
4343478f | 389 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
390 | struct l2cap_options opts; |
391 | struct l2cap_conninfo cinfo; | |
392 | int len, err = 0; | |
393 | u32 opt; | |
394 | ||
395 | BT_DBG("sk %p", sk); | |
396 | ||
397 | if (get_user(len, optlen)) | |
398 | return -EFAULT; | |
399 | ||
400 | lock_sock(sk); | |
401 | ||
402 | switch (optname) { | |
403 | case L2CAP_OPTIONS: | |
64b4f8dc JH |
404 | /* LE sockets should use BT_SNDMTU/BT_RCVMTU, but since |
405 | * legacy ATT code depends on getsockopt for | |
406 | * L2CAP_OPTIONS we need to let this pass. | |
407 | */ | |
408 | if (bdaddr_type_is_le(chan->src_type) && | |
409 | chan->scid != L2CAP_CID_ATT) { | |
410 | err = -EINVAL; | |
411 | break; | |
412 | } | |
413 | ||
e3fb592b | 414 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
415 | opts.imtu = chan->imtu; |
416 | opts.omtu = chan->omtu; | |
417 | opts.flush_to = chan->flush_to; | |
418 | opts.mode = chan->mode; | |
47d1ec61 GP |
419 | opts.fcs = chan->fcs; |
420 | opts.max_tx = chan->max_tx; | |
6327eb98 | 421 | opts.txwin_size = chan->tx_win; |
99f4808d GP |
422 | |
423 | len = min_t(unsigned int, len, sizeof(opts)); | |
424 | if (copy_to_user(optval, (char *) &opts, len)) | |
425 | err = -EFAULT; | |
426 | ||
427 | break; | |
428 | ||
429 | case L2CAP_LM: | |
4343478f | 430 | switch (chan->sec_level) { |
99f4808d GP |
431 | case BT_SECURITY_LOW: |
432 | opt = L2CAP_LM_AUTH; | |
433 | break; | |
434 | case BT_SECURITY_MEDIUM: | |
435 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
436 | break; | |
437 | case BT_SECURITY_HIGH: | |
438 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
2d792818 | 439 | L2CAP_LM_SECURE; |
99f4808d | 440 | break; |
7d513e92 MH |
441 | case BT_SECURITY_FIPS: |
442 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
443 | L2CAP_LM_SECURE | L2CAP_LM_FIPS; | |
444 | break; | |
99f4808d GP |
445 | default: |
446 | opt = 0; | |
447 | break; | |
448 | } | |
449 | ||
43bd0f32 | 450 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
451 | opt |= L2CAP_LM_MASTER; |
452 | ||
ecf61bdb | 453 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
454 | opt |= L2CAP_LM_RELIABLE; |
455 | ||
456 | if (put_user(opt, (u32 __user *) optval)) | |
457 | err = -EFAULT; | |
7d513e92 | 458 | |
99f4808d GP |
459 | break; |
460 | ||
461 | case L2CAP_CONNINFO: | |
462 | if (sk->sk_state != BT_CONNECTED && | |
c5daa683 GP |
463 | !(sk->sk_state == BT_CONNECT2 && |
464 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
99f4808d GP |
465 | err = -ENOTCONN; |
466 | break; | |
467 | } | |
468 | ||
8d03e971 | 469 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
470 | cinfo.hci_handle = chan->conn->hcon->handle; |
471 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
472 | |
473 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
474 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
475 | err = -EFAULT; | |
476 | ||
477 | break; | |
478 | ||
479 | default: | |
480 | err = -ENOPROTOOPT; | |
481 | break; | |
482 | } | |
483 | ||
484 | release_sock(sk); | |
485 | return err; | |
486 | } | |
487 | ||
2d792818 GP |
488 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, |
489 | char __user *optval, int __user *optlen) | |
99f4808d GP |
490 | { |
491 | struct sock *sk = sock->sk; | |
4343478f | 492 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 493 | struct bt_security sec; |
14b12d0b | 494 | struct bt_power pwr; |
99f4808d GP |
495 | int len, err = 0; |
496 | ||
497 | BT_DBG("sk %p", sk); | |
498 | ||
499 | if (level == SOL_L2CAP) | |
500 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
501 | ||
502 | if (level != SOL_BLUETOOTH) | |
503 | return -ENOPROTOOPT; | |
504 | ||
505 | if (get_user(len, optlen)) | |
506 | return -EFAULT; | |
507 | ||
508 | lock_sock(sk); | |
509 | ||
510 | switch (optname) { | |
511 | case BT_SECURITY: | |
715ec005 | 512 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
e0c888ad | 513 | chan->chan_type != L2CAP_CHAN_FIXED && |
2d792818 | 514 | chan->chan_type != L2CAP_CHAN_RAW) { |
99f4808d GP |
515 | err = -EINVAL; |
516 | break; | |
517 | } | |
518 | ||
8f360119 | 519 | memset(&sec, 0, sizeof(sec)); |
85e34368 | 520 | if (chan->conn) { |
c6585a4d | 521 | sec.level = chan->conn->hcon->sec_level; |
99f4808d | 522 | |
85e34368 AE |
523 | if (sk->sk_state == BT_CONNECTED) |
524 | sec.key_size = chan->conn->hcon->enc_key_size; | |
525 | } else { | |
526 | sec.level = chan->sec_level; | |
527 | } | |
8f360119 | 528 | |
99f4808d GP |
529 | len = min_t(unsigned int, len, sizeof(sec)); |
530 | if (copy_to_user(optval, (char *) &sec, len)) | |
531 | err = -EFAULT; | |
532 | ||
533 | break; | |
534 | ||
535 | case BT_DEFER_SETUP: | |
536 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
537 | err = -EINVAL; | |
538 | break; | |
539 | } | |
540 | ||
c5daa683 GP |
541 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
542 | (u32 __user *) optval)) | |
99f4808d GP |
543 | err = -EFAULT; |
544 | ||
545 | break; | |
546 | ||
547 | case BT_FLUSHABLE: | |
d57b0e8b | 548 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
2d792818 | 549 | (u32 __user *) optval)) |
99f4808d GP |
550 | err = -EFAULT; |
551 | ||
552 | break; | |
553 | ||
14b12d0b JG |
554 | case BT_POWER: |
555 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
2d792818 | 556 | && sk->sk_type != SOCK_RAW) { |
14b12d0b JG |
557 | err = -EINVAL; |
558 | break; | |
559 | } | |
560 | ||
15770b1a | 561 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
562 | |
563 | len = min_t(unsigned int, len, sizeof(pwr)); | |
564 | if (copy_to_user(optval, (char *) &pwr, len)) | |
565 | err = -EFAULT; | |
566 | ||
567 | break; | |
568 | ||
2ea66482 | 569 | case BT_CHANNEL_POLICY: |
2ea66482 MM |
570 | if (put_user(chan->chan_policy, (u32 __user *) optval)) |
571 | err = -EFAULT; | |
572 | break; | |
573 | ||
1f435424 | 574 | case BT_SNDMTU: |
1f435424 JH |
575 | if (!bdaddr_type_is_le(chan->src_type)) { |
576 | err = -EINVAL; | |
577 | break; | |
578 | } | |
579 | ||
580 | if (sk->sk_state != BT_CONNECTED) { | |
581 | err = -ENOTCONN; | |
582 | break; | |
583 | } | |
584 | ||
585 | if (put_user(chan->omtu, (u16 __user *) optval)) | |
586 | err = -EFAULT; | |
587 | break; | |
588 | ||
589 | case BT_RCVMTU: | |
1f435424 JH |
590 | if (!bdaddr_type_is_le(chan->src_type)) { |
591 | err = -EINVAL; | |
592 | break; | |
593 | } | |
594 | ||
595 | if (put_user(chan->imtu, (u16 __user *) optval)) | |
596 | err = -EFAULT; | |
597 | break; | |
598 | ||
99f4808d GP |
599 | default: |
600 | err = -ENOPROTOOPT; | |
601 | break; | |
602 | } | |
603 | ||
604 | release_sock(sk); | |
605 | return err; | |
606 | } | |
607 | ||
682877c3 AG |
608 | static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu) |
609 | { | |
610 | switch (chan->scid) { | |
073d1cf3 | 611 | case L2CAP_CID_ATT: |
8c3a4f00 | 612 | if (mtu < L2CAP_LE_MIN_MTU) |
682877c3 AG |
613 | return false; |
614 | break; | |
615 | ||
616 | default: | |
617 | if (mtu < L2CAP_DEFAULT_MIN_MTU) | |
618 | return false; | |
619 | } | |
620 | ||
621 | return true; | |
622 | } | |
623 | ||
2d792818 GP |
624 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, |
625 | char __user *optval, unsigned int optlen) | |
33575df7 GP |
626 | { |
627 | struct sock *sk = sock->sk; | |
b4450035 | 628 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
629 | struct l2cap_options opts; |
630 | int len, err = 0; | |
631 | u32 opt; | |
632 | ||
633 | BT_DBG("sk %p", sk); | |
634 | ||
635 | lock_sock(sk); | |
636 | ||
637 | switch (optname) { | |
638 | case L2CAP_OPTIONS: | |
64b4f8dc JH |
639 | if (bdaddr_type_is_le(chan->src_type)) { |
640 | err = -EINVAL; | |
641 | break; | |
642 | } | |
643 | ||
33575df7 GP |
644 | if (sk->sk_state == BT_CONNECTED) { |
645 | err = -EINVAL; | |
646 | break; | |
647 | } | |
648 | ||
0c1bc5c6 GP |
649 | opts.imtu = chan->imtu; |
650 | opts.omtu = chan->omtu; | |
651 | opts.flush_to = chan->flush_to; | |
652 | opts.mode = chan->mode; | |
47d1ec61 GP |
653 | opts.fcs = chan->fcs; |
654 | opts.max_tx = chan->max_tx; | |
6327eb98 | 655 | opts.txwin_size = chan->tx_win; |
33575df7 GP |
656 | |
657 | len = min_t(unsigned int, sizeof(opts), optlen); | |
658 | if (copy_from_user((char *) &opts, optval, len)) { | |
659 | err = -EFAULT; | |
660 | break; | |
661 | } | |
662 | ||
6327eb98 | 663 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
33575df7 GP |
664 | err = -EINVAL; |
665 | break; | |
666 | } | |
667 | ||
682877c3 AG |
668 | if (!l2cap_valid_mtu(chan, opts.imtu)) { |
669 | err = -EINVAL; | |
670 | break; | |
671 | } | |
672 | ||
0c1bc5c6 GP |
673 | chan->mode = opts.mode; |
674 | switch (chan->mode) { | |
38319713 JH |
675 | case L2CAP_MODE_LE_FLOWCTL: |
676 | break; | |
33575df7 | 677 | case L2CAP_MODE_BASIC: |
c1360a1c | 678 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
679 | break; |
680 | case L2CAP_MODE_ERTM: | |
681 | case L2CAP_MODE_STREAMING: | |
682 | if (!disable_ertm) | |
683 | break; | |
684 | /* fall through */ | |
685 | default: | |
686 | err = -EINVAL; | |
687 | break; | |
688 | } | |
689 | ||
0c1bc5c6 GP |
690 | chan->imtu = opts.imtu; |
691 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
692 | chan->fcs = opts.fcs; |
693 | chan->max_tx = opts.max_tx; | |
6327eb98 | 694 | chan->tx_win = opts.txwin_size; |
12d59781 | 695 | chan->flush_to = opts.flush_to; |
33575df7 GP |
696 | break; |
697 | ||
698 | case L2CAP_LM: | |
699 | if (get_user(opt, (u32 __user *) optval)) { | |
700 | err = -EFAULT; | |
701 | break; | |
702 | } | |
703 | ||
7d513e92 MH |
704 | if (opt & L2CAP_LM_FIPS) { |
705 | err = -EINVAL; | |
706 | break; | |
707 | } | |
708 | ||
33575df7 | 709 | if (opt & L2CAP_LM_AUTH) |
4343478f | 710 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 711 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 712 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 713 | if (opt & L2CAP_LM_SECURE) |
4343478f | 714 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 715 | |
43bd0f32 AE |
716 | if (opt & L2CAP_LM_MASTER) |
717 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
718 | else | |
719 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
720 | |
721 | if (opt & L2CAP_LM_RELIABLE) | |
722 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
723 | else | |
724 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
725 | break; |
726 | ||
727 | default: | |
728 | err = -ENOPROTOOPT; | |
729 | break; | |
730 | } | |
731 | ||
732 | release_sock(sk); | |
733 | return err; | |
734 | } | |
735 | ||
2d792818 GP |
736 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, |
737 | char __user *optval, unsigned int optlen) | |
33575df7 GP |
738 | { |
739 | struct sock *sk = sock->sk; | |
4343478f | 740 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 741 | struct bt_security sec; |
14b12d0b | 742 | struct bt_power pwr; |
f1cb9af5 | 743 | struct l2cap_conn *conn; |
33575df7 GP |
744 | int len, err = 0; |
745 | u32 opt; | |
746 | ||
747 | BT_DBG("sk %p", sk); | |
748 | ||
749 | if (level == SOL_L2CAP) | |
750 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
751 | ||
752 | if (level != SOL_BLUETOOTH) | |
753 | return -ENOPROTOOPT; | |
754 | ||
755 | lock_sock(sk); | |
756 | ||
757 | switch (optname) { | |
758 | case BT_SECURITY: | |
715ec005 | 759 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
e0c888ad | 760 | chan->chan_type != L2CAP_CHAN_FIXED && |
2d792818 | 761 | chan->chan_type != L2CAP_CHAN_RAW) { |
33575df7 GP |
762 | err = -EINVAL; |
763 | break; | |
764 | } | |
765 | ||
766 | sec.level = BT_SECURITY_LOW; | |
767 | ||
768 | len = min_t(unsigned int, sizeof(sec), optlen); | |
769 | if (copy_from_user((char *) &sec, optval, len)) { | |
770 | err = -EFAULT; | |
771 | break; | |
772 | } | |
773 | ||
774 | if (sec.level < BT_SECURITY_LOW || | |
2d792818 | 775 | sec.level > BT_SECURITY_HIGH) { |
33575df7 GP |
776 | err = -EINVAL; |
777 | break; | |
778 | } | |
779 | ||
4343478f | 780 | chan->sec_level = sec.level; |
f1cb9af5 | 781 | |
0bee1d60 GP |
782 | if (!chan->conn) |
783 | break; | |
784 | ||
f1cb9af5 | 785 | conn = chan->conn; |
0bee1d60 GP |
786 | |
787 | /*change security for LE channels */ | |
073d1cf3 | 788 | if (chan->scid == L2CAP_CID_ATT) { |
f1cb9af5 VCG |
789 | if (!conn->hcon->out) { |
790 | err = -EINVAL; | |
791 | break; | |
792 | } | |
793 | ||
cc110922 | 794 | if (smp_conn_security(conn->hcon, sec.level)) |
f1cb9af5 | 795 | break; |
f1cb9af5 | 796 | sk->sk_state = BT_CONFIG; |
3542b854 | 797 | chan->state = BT_CONFIG; |
0bee1d60 | 798 | |
a7d7723a GP |
799 | /* or for ACL link */ |
800 | } else if ((sk->sk_state == BT_CONNECT2 && | |
2d792818 | 801 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) || |
a7d7723a GP |
802 | sk->sk_state == BT_CONNECTED) { |
803 | if (!l2cap_chan_check_security(chan)) | |
c5daa683 | 804 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); |
a7d7723a GP |
805 | else |
806 | sk->sk_state_change(sk); | |
0bee1d60 GP |
807 | } else { |
808 | err = -EINVAL; | |
f1cb9af5 | 809 | } |
33575df7 GP |
810 | break; |
811 | ||
812 | case BT_DEFER_SETUP: | |
813 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
814 | err = -EINVAL; | |
815 | break; | |
816 | } | |
817 | ||
818 | if (get_user(opt, (u32 __user *) optval)) { | |
819 | err = -EFAULT; | |
820 | break; | |
821 | } | |
822 | ||
bdc25783 | 823 | if (opt) { |
c5daa683 | 824 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
bdc25783 MH |
825 | set_bit(FLAG_DEFER_SETUP, &chan->flags); |
826 | } else { | |
c5daa683 | 827 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
bdc25783 MH |
828 | clear_bit(FLAG_DEFER_SETUP, &chan->flags); |
829 | } | |
33575df7 GP |
830 | break; |
831 | ||
832 | case BT_FLUSHABLE: | |
833 | if (get_user(opt, (u32 __user *) optval)) { | |
834 | err = -EFAULT; | |
835 | break; | |
836 | } | |
837 | ||
838 | if (opt > BT_FLUSHABLE_ON) { | |
839 | err = -EINVAL; | |
840 | break; | |
841 | } | |
842 | ||
843 | if (opt == BT_FLUSHABLE_OFF) { | |
c1f23a2b | 844 | conn = chan->conn; |
25985edc | 845 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
846 | No Flush support in the LM */ |
847 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
848 | err = -EINVAL; | |
849 | break; | |
850 | } | |
851 | } | |
852 | ||
d57b0e8b AE |
853 | if (opt) |
854 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
855 | else | |
856 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
857 | break; |
858 | ||
14b12d0b JG |
859 | case BT_POWER: |
860 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
2d792818 | 861 | chan->chan_type != L2CAP_CHAN_RAW) { |
14b12d0b JG |
862 | err = -EINVAL; |
863 | break; | |
864 | } | |
865 | ||
866 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
867 | ||
868 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
869 | if (copy_from_user((char *) &pwr, optval, len)) { | |
870 | err = -EFAULT; | |
871 | break; | |
872 | } | |
15770b1a AE |
873 | |
874 | if (pwr.force_active) | |
875 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
876 | else | |
877 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
878 | break; |
879 | ||
2ea66482 | 880 | case BT_CHANNEL_POLICY: |
2ea66482 MM |
881 | if (get_user(opt, (u32 __user *) optval)) { |
882 | err = -EFAULT; | |
883 | break; | |
884 | } | |
885 | ||
886 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { | |
887 | err = -EINVAL; | |
888 | break; | |
889 | } | |
890 | ||
891 | if (chan->mode != L2CAP_MODE_ERTM && | |
2d792818 | 892 | chan->mode != L2CAP_MODE_STREAMING) { |
2ea66482 MM |
893 | err = -EOPNOTSUPP; |
894 | break; | |
895 | } | |
896 | ||
897 | chan->chan_policy = (u8) opt; | |
3f7a56c4 MM |
898 | |
899 | if (sk->sk_state == BT_CONNECTED && | |
900 | chan->move_role == L2CAP_MOVE_ROLE_NONE) | |
901 | l2cap_move_start(chan); | |
902 | ||
14b12d0b JG |
903 | break; |
904 | ||
1f435424 | 905 | case BT_SNDMTU: |
1f435424 JH |
906 | if (!bdaddr_type_is_le(chan->src_type)) { |
907 | err = -EINVAL; | |
908 | break; | |
909 | } | |
910 | ||
911 | /* Setting is not supported as it's the remote side that | |
912 | * decides this. | |
913 | */ | |
914 | err = -EPERM; | |
915 | break; | |
916 | ||
917 | case BT_RCVMTU: | |
1f435424 JH |
918 | if (!bdaddr_type_is_le(chan->src_type)) { |
919 | err = -EINVAL; | |
920 | break; | |
921 | } | |
922 | ||
923 | if (sk->sk_state == BT_CONNECTED) { | |
924 | err = -EISCONN; | |
925 | break; | |
926 | } | |
927 | ||
928 | if (get_user(opt, (u32 __user *) optval)) { | |
929 | err = -EFAULT; | |
930 | break; | |
931 | } | |
932 | ||
933 | chan->imtu = opt; | |
934 | break; | |
935 | ||
33575df7 GP |
936 | default: |
937 | err = -ENOPROTOOPT; | |
938 | break; | |
939 | } | |
940 | ||
941 | release_sock(sk); | |
942 | return err; | |
943 | } | |
fd83ccdb | 944 | |
2d792818 GP |
945 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
946 | struct msghdr *msg, size_t len) | |
fd83ccdb GP |
947 | { |
948 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 949 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
950 | int err; |
951 | ||
952 | BT_DBG("sock %p, sk %p", sock, sk); | |
953 | ||
954 | err = sock_error(sk); | |
955 | if (err) | |
956 | return err; | |
957 | ||
958 | if (msg->msg_flags & MSG_OOB) | |
959 | return -EOPNOTSUPP; | |
960 | ||
a6a5568c | 961 | if (sk->sk_state != BT_CONNECTED) |
9a91a04a | 962 | return -ENOTCONN; |
fd83ccdb | 963 | |
e793dcf0 JH |
964 | lock_sock(sk); |
965 | err = bt_sock_wait_ready(sk, msg->msg_flags); | |
966 | release_sock(sk); | |
967 | if (err) | |
968 | return err; | |
969 | ||
a6a5568c | 970 | l2cap_chan_lock(chan); |
5e59b791 | 971 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
a6a5568c | 972 | l2cap_chan_unlock(chan); |
fd83ccdb | 973 | |
fd83ccdb GP |
974 | return err; |
975 | } | |
33575df7 | 976 | |
2d792818 GP |
977 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
978 | struct msghdr *msg, size_t len, int flags) | |
68983259 GP |
979 | { |
980 | struct sock *sk = sock->sk; | |
e328140f MM |
981 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
982 | int err; | |
68983259 GP |
983 | |
984 | lock_sock(sk); | |
985 | ||
c5daa683 GP |
986 | if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, |
987 | &bt_sk(sk)->flags)) { | |
38319713 JH |
988 | if (bdaddr_type_is_le(pi->chan->src_type)) { |
989 | sk->sk_state = BT_CONNECTED; | |
990 | pi->chan->state = BT_CONNECTED; | |
991 | __l2cap_le_connect_rsp_defer(pi->chan); | |
992 | } else { | |
993 | sk->sk_state = BT_CONFIG; | |
994 | pi->chan->state = BT_CONFIG; | |
995 | __l2cap_connect_rsp_defer(pi->chan); | |
996 | } | |
8c1d787b | 997 | |
970871bc JH |
998 | err = 0; |
999 | goto done; | |
68983259 GP |
1000 | } |
1001 | ||
1002 | release_sock(sk); | |
1003 | ||
1004 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
1005 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
1006 | else | |
1007 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
1008 | ||
1009 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
1010 | return err; | |
1011 | ||
1012 | /* Attempt to put pending rx data in the socket buffer */ | |
1013 | ||
1014 | lock_sock(sk); | |
1015 | ||
1016 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
1017 | goto done; | |
1018 | ||
1019 | if (pi->rx_busy_skb) { | |
1020 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
1021 | pi->rx_busy_skb = NULL; | |
1022 | else | |
1023 | goto done; | |
1024 | } | |
1025 | ||
1026 | /* Restore data flow when half of the receive buffer is | |
1027 | * available. This avoids resending large numbers of | |
1028 | * frames. | |
1029 | */ | |
1030 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
1031 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 1032 | |
e328140f MM |
1033 | done: |
1034 | release_sock(sk); | |
1035 | return err; | |
68983259 GP |
1036 | } |
1037 | ||
05fc1576 GP |
1038 | /* Kill socket (only if zapped and orphan) |
1039 | * Must be called on unlocked socket. | |
1040 | */ | |
ba3bd0ee | 1041 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
1042 | { |
1043 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
1044 | return; | |
1045 | ||
e05dcc32 | 1046 | BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state)); |
05fc1576 GP |
1047 | |
1048 | /* Kill poor orphan */ | |
6ff5abbf | 1049 | |
4af66c69 | 1050 | l2cap_chan_put(l2cap_pi(sk)->chan); |
05fc1576 GP |
1051 | sock_set_flag(sk, SOCK_DEAD); |
1052 | sock_put(sk); | |
1053 | } | |
1054 | ||
dc25306b GP |
1055 | static int __l2cap_wait_ack(struct sock *sk) |
1056 | { | |
1057 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; | |
1058 | DECLARE_WAITQUEUE(wait, current); | |
1059 | int err = 0; | |
1060 | int timeo = HZ/5; | |
1061 | ||
1062 | add_wait_queue(sk_sleep(sk), &wait); | |
1063 | set_current_state(TASK_INTERRUPTIBLE); | |
1064 | while (chan->unacked_frames > 0 && chan->conn) { | |
1065 | if (!timeo) | |
1066 | timeo = HZ/5; | |
1067 | ||
1068 | if (signal_pending(current)) { | |
1069 | err = sock_intr_errno(timeo); | |
1070 | break; | |
1071 | } | |
1072 | ||
1073 | release_sock(sk); | |
1074 | timeo = schedule_timeout(timeo); | |
1075 | lock_sock(sk); | |
1076 | set_current_state(TASK_INTERRUPTIBLE); | |
1077 | ||
1078 | err = sock_error(sk); | |
1079 | if (err) | |
1080 | break; | |
1081 | } | |
1082 | set_current_state(TASK_RUNNING); | |
1083 | remove_wait_queue(sk_sleep(sk), &wait); | |
1084 | return err; | |
1085 | } | |
1086 | ||
dcba0dba GP |
1087 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
1088 | { | |
1089 | struct sock *sk = sock->sk; | |
7ddb6e0f | 1090 | struct l2cap_chan *chan; |
3df91ea2 | 1091 | struct l2cap_conn *conn; |
dcba0dba GP |
1092 | int err = 0; |
1093 | ||
1094 | BT_DBG("sock %p, sk %p", sock, sk); | |
1095 | ||
1096 | if (!sk) | |
1097 | return 0; | |
1098 | ||
7ddb6e0f | 1099 | chan = l2cap_pi(sk)->chan; |
3df91ea2 AE |
1100 | conn = chan->conn; |
1101 | ||
1102 | if (conn) | |
1103 | mutex_lock(&conn->chan_lock); | |
7ddb6e0f | 1104 | |
6be36555 | 1105 | l2cap_chan_lock(chan); |
dcba0dba | 1106 | lock_sock(sk); |
6be36555 | 1107 | |
dcba0dba | 1108 | if (!sk->sk_shutdown) { |
0c1bc5c6 | 1109 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
1110 | err = __l2cap_wait_ack(sk); |
1111 | ||
1112 | sk->sk_shutdown = SHUTDOWN_MASK; | |
3df91ea2 | 1113 | |
6be36555 | 1114 | release_sock(sk); |
0f852724 | 1115 | l2cap_chan_close(chan, 0); |
6be36555 | 1116 | lock_sock(sk); |
dcba0dba GP |
1117 | |
1118 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
1119 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
2d792818 | 1120 | sk->sk_lingertime); |
dcba0dba GP |
1121 | } |
1122 | ||
1123 | if (!err && sk->sk_err) | |
1124 | err = -sk->sk_err; | |
1125 | ||
1126 | release_sock(sk); | |
6be36555 | 1127 | l2cap_chan_unlock(chan); |
3df91ea2 AE |
1128 | |
1129 | if (conn) | |
1130 | mutex_unlock(&conn->chan_lock); | |
1131 | ||
dcba0dba GP |
1132 | return err; |
1133 | } | |
1134 | ||
554f05bb GP |
1135 | static int l2cap_sock_release(struct socket *sock) |
1136 | { | |
1137 | struct sock *sk = sock->sk; | |
1138 | int err; | |
1139 | ||
1140 | BT_DBG("sock %p, sk %p", sock, sk); | |
1141 | ||
1142 | if (!sk) | |
1143 | return 0; | |
1144 | ||
5b28d95c MY |
1145 | bt_sock_unlink(&l2cap_sk_list, sk); |
1146 | ||
554f05bb GP |
1147 | err = l2cap_sock_shutdown(sock, 2); |
1148 | ||
1149 | sock_orphan(sk); | |
1150 | l2cap_sock_kill(sk); | |
1151 | return err; | |
1152 | } | |
1153 | ||
c0df7f6e AE |
1154 | static void l2cap_sock_cleanup_listen(struct sock *parent) |
1155 | { | |
1156 | struct sock *sk; | |
1157 | ||
1158 | BT_DBG("parent %p", parent); | |
1159 | ||
1160 | /* Close not yet accepted channels */ | |
1161 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
1162 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; | |
1163 | ||
1164 | l2cap_chan_lock(chan); | |
1165 | __clear_chan_timer(chan); | |
1166 | l2cap_chan_close(chan, ECONNRESET); | |
1167 | l2cap_chan_unlock(chan); | |
1168 | ||
1169 | l2cap_sock_kill(sk); | |
1170 | } | |
1171 | } | |
1172 | ||
80b98027 | 1173 | static struct l2cap_chan *l2cap_sock_new_connection_cb(struct l2cap_chan *chan) |
80808e43 | 1174 | { |
80b98027 | 1175 | struct sock *sk, *parent = chan->data; |
80808e43 | 1176 | |
8ffb9290 GP |
1177 | lock_sock(parent); |
1178 | ||
53826692 GP |
1179 | /* Check for backlog size */ |
1180 | if (sk_acceptq_is_full(parent)) { | |
1181 | BT_DBG("backlog full %d", parent->sk_ack_backlog); | |
1182 | return NULL; | |
1183 | } | |
1184 | ||
80808e43 | 1185 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, |
2d792818 | 1186 | GFP_ATOMIC); |
80808e43 GP |
1187 | if (!sk) |
1188 | return NULL; | |
1189 | ||
d22015aa OP |
1190 | bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); |
1191 | ||
80808e43 GP |
1192 | l2cap_sock_init(sk, parent); |
1193 | ||
644912e1 GP |
1194 | bt_accept_enqueue(parent, sk); |
1195 | ||
8ffb9290 GP |
1196 | release_sock(parent); |
1197 | ||
80808e43 GP |
1198 | return l2cap_pi(sk)->chan; |
1199 | } | |
1200 | ||
80b98027 | 1201 | static int l2cap_sock_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb) |
23070494 | 1202 | { |
80b98027 | 1203 | struct sock *sk = chan->data; |
84b34d98 | 1204 | int err; |
e328140f | 1205 | |
6be36555 AE |
1206 | lock_sock(sk); |
1207 | ||
84b34d98 | 1208 | if (l2cap_pi(sk)->rx_busy_skb) { |
6be36555 AE |
1209 | err = -ENOMEM; |
1210 | goto done; | |
1211 | } | |
e328140f MM |
1212 | |
1213 | err = sock_queue_rcv_skb(sk, skb); | |
1214 | ||
1215 | /* For ERTM, handle one skb that doesn't fit into the recv | |
1216 | * buffer. This is important to do because the data frames | |
1217 | * have already been acked, so the skb cannot be discarded. | |
1218 | * | |
1219 | * Notify the l2cap core that the buffer is full, so the | |
1220 | * LOCAL_BUSY state is entered and no more frames are | |
1221 | * acked and reassembled until there is buffer space | |
1222 | * available. | |
1223 | */ | |
84b34d98 MH |
1224 | if (err < 0 && chan->mode == L2CAP_MODE_ERTM) { |
1225 | l2cap_pi(sk)->rx_busy_skb = skb; | |
1226 | l2cap_chan_busy(chan, 1); | |
e328140f MM |
1227 | err = 0; |
1228 | } | |
23070494 | 1229 | |
6be36555 AE |
1230 | done: |
1231 | release_sock(sk); | |
1232 | ||
e328140f | 1233 | return err; |
23070494 GP |
1234 | } |
1235 | ||
80b98027 | 1236 | static void l2cap_sock_close_cb(struct l2cap_chan *chan) |
ba3bd0ee | 1237 | { |
80b98027 | 1238 | struct sock *sk = chan->data; |
ba3bd0ee GP |
1239 | |
1240 | l2cap_sock_kill(sk); | |
1241 | } | |
1242 | ||
c0df7f6e AE |
1243 | static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err) |
1244 | { | |
1245 | struct sock *sk = chan->data; | |
1246 | struct sock *parent; | |
1247 | ||
1248 | lock_sock(sk); | |
1249 | ||
1250 | parent = bt_sk(sk)->parent; | |
1251 | ||
1252 | sock_set_flag(sk, SOCK_ZAPPED); | |
1253 | ||
1254 | switch (chan->state) { | |
1255 | case BT_OPEN: | |
1256 | case BT_BOUND: | |
1257 | case BT_CLOSED: | |
1258 | break; | |
1259 | case BT_LISTEN: | |
1260 | l2cap_sock_cleanup_listen(sk); | |
1261 | sk->sk_state = BT_CLOSED; | |
1262 | chan->state = BT_CLOSED; | |
1263 | ||
1264 | break; | |
1265 | default: | |
1266 | sk->sk_state = BT_CLOSED; | |
1267 | chan->state = BT_CLOSED; | |
1268 | ||
1269 | sk->sk_err = err; | |
1270 | ||
1271 | if (parent) { | |
1272 | bt_accept_unlink(sk); | |
1273 | parent->sk_data_ready(parent, 0); | |
1274 | } else { | |
1275 | sk->sk_state_change(sk); | |
1276 | } | |
1277 | ||
1278 | break; | |
1279 | } | |
1280 | ||
1281 | release_sock(sk); | |
1282 | } | |
1283 | ||
53f52121 GP |
1284 | static void l2cap_sock_state_change_cb(struct l2cap_chan *chan, int state, |
1285 | int err) | |
89bc500e | 1286 | { |
80b98027 | 1287 | struct sock *sk = chan->data; |
89bc500e GP |
1288 | |
1289 | sk->sk_state = state; | |
53f52121 GP |
1290 | |
1291 | if (err) | |
1292 | sk->sk_err = err; | |
89bc500e GP |
1293 | } |
1294 | ||
2f7719ce | 1295 | static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, |
90338947 | 1296 | unsigned long len, int nb) |
2f7719ce | 1297 | { |
0f2c6153 | 1298 | struct sock *sk = chan->data; |
90338947 GP |
1299 | struct sk_buff *skb; |
1300 | int err; | |
1301 | ||
a6a5568c | 1302 | l2cap_chan_unlock(chan); |
0f2c6153 | 1303 | skb = bt_skb_send_alloc(sk, len, nb, &err); |
a6a5568c MM |
1304 | l2cap_chan_lock(chan); |
1305 | ||
90338947 GP |
1306 | if (!skb) |
1307 | return ERR_PTR(err); | |
2f7719ce | 1308 | |
0e790c64 GP |
1309 | bt_cb(skb)->chan = chan; |
1310 | ||
90338947 | 1311 | return skb; |
2f7719ce AE |
1312 | } |
1313 | ||
54a59aa2 AE |
1314 | static void l2cap_sock_ready_cb(struct l2cap_chan *chan) |
1315 | { | |
1316 | struct sock *sk = chan->data; | |
1317 | struct sock *parent; | |
1318 | ||
1319 | lock_sock(sk); | |
1320 | ||
1321 | parent = bt_sk(sk)->parent; | |
1322 | ||
1323 | BT_DBG("sk %p, parent %p", sk, parent); | |
1324 | ||
1325 | sk->sk_state = BT_CONNECTED; | |
1326 | sk->sk_state_change(sk); | |
1327 | ||
1328 | if (parent) | |
1329 | parent->sk_data_ready(parent, 0); | |
1330 | ||
1331 | release_sock(sk); | |
1332 | } | |
1333 | ||
2dc4e510 GP |
1334 | static void l2cap_sock_defer_cb(struct l2cap_chan *chan) |
1335 | { | |
acdcabf5 GP |
1336 | struct sock *parent, *sk = chan->data; |
1337 | ||
1338 | lock_sock(sk); | |
2dc4e510 | 1339 | |
acdcabf5 | 1340 | parent = bt_sk(sk)->parent; |
2dc4e510 GP |
1341 | if (parent) |
1342 | parent->sk_data_ready(parent, 0); | |
acdcabf5 GP |
1343 | |
1344 | release_sock(sk); | |
2dc4e510 GP |
1345 | } |
1346 | ||
d97c899b MH |
1347 | static void l2cap_sock_resume_cb(struct l2cap_chan *chan) |
1348 | { | |
1349 | struct sock *sk = chan->data; | |
1350 | ||
1351 | clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); | |
1352 | sk->sk_state_change(sk); | |
1353 | } | |
1354 | ||
5ec1bbe5 GP |
1355 | static void l2cap_sock_set_shutdown_cb(struct l2cap_chan *chan) |
1356 | { | |
1357 | struct sock *sk = chan->data; | |
1358 | ||
1359 | lock_sock(sk); | |
1360 | sk->sk_shutdown = SHUTDOWN_MASK; | |
1361 | release_sock(sk); | |
1362 | } | |
1363 | ||
8d836d71 GP |
1364 | static long l2cap_sock_get_sndtimeo_cb(struct l2cap_chan *chan) |
1365 | { | |
1366 | struct sock *sk = chan->data; | |
1367 | ||
1368 | return sk->sk_sndtimeo; | |
1369 | } | |
1370 | ||
837776f7 JH |
1371 | static void l2cap_sock_suspend_cb(struct l2cap_chan *chan) |
1372 | { | |
1373 | struct sock *sk = chan->data; | |
1374 | ||
1375 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); | |
1376 | sk->sk_state_change(sk); | |
1377 | } | |
1378 | ||
80808e43 GP |
1379 | static struct l2cap_ops l2cap_chan_ops = { |
1380 | .name = "L2CAP Socket Interface", | |
1381 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 1382 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 1383 | .close = l2cap_sock_close_cb, |
c0df7f6e | 1384 | .teardown = l2cap_sock_teardown_cb, |
89bc500e | 1385 | .state_change = l2cap_sock_state_change_cb, |
54a59aa2 | 1386 | .ready = l2cap_sock_ready_cb, |
2dc4e510 | 1387 | .defer = l2cap_sock_defer_cb, |
d97c899b | 1388 | .resume = l2cap_sock_resume_cb, |
837776f7 | 1389 | .suspend = l2cap_sock_suspend_cb, |
5ec1bbe5 | 1390 | .set_shutdown = l2cap_sock_set_shutdown_cb, |
8d836d71 | 1391 | .get_sndtimeo = l2cap_sock_get_sndtimeo_cb, |
2f7719ce | 1392 | .alloc_skb = l2cap_sock_alloc_skb_cb, |
80808e43 GP |
1393 | }; |
1394 | ||
bb58f747 GP |
1395 | static void l2cap_sock_destruct(struct sock *sk) |
1396 | { | |
1397 | BT_DBG("sk %p", sk); | |
1398 | ||
23d3a869 SL |
1399 | if (l2cap_pi(sk)->chan) |
1400 | l2cap_chan_put(l2cap_pi(sk)->chan); | |
84b34d98 | 1401 | |
e328140f MM |
1402 | if (l2cap_pi(sk)->rx_busy_skb) { |
1403 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
1404 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
1405 | } | |
1406 | ||
bb58f747 GP |
1407 | skb_queue_purge(&sk->sk_receive_queue); |
1408 | skb_queue_purge(&sk->sk_write_queue); | |
1409 | } | |
1410 | ||
2edf870d MH |
1411 | static void l2cap_skb_msg_name(struct sk_buff *skb, void *msg_name, |
1412 | int *msg_namelen) | |
1413 | { | |
342dfc30 | 1414 | DECLARE_SOCKADDR(struct sockaddr_l2 *, la, msg_name); |
2edf870d MH |
1415 | |
1416 | memset(la, 0, sizeof(struct sockaddr_l2)); | |
1417 | la->l2_family = AF_BLUETOOTH; | |
1418 | la->l2_psm = bt_cb(skb)->psm; | |
1419 | bacpy(&la->l2_bdaddr, &bt_cb(skb)->bdaddr); | |
1420 | ||
1421 | *msg_namelen = sizeof(struct sockaddr_l2); | |
1422 | } | |
1423 | ||
80808e43 | 1424 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 | 1425 | { |
84b34d98 | 1426 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
bb58f747 GP |
1427 | |
1428 | BT_DBG("sk %p", sk); | |
1429 | ||
1430 | if (parent) { | |
b4450035 GP |
1431 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
1432 | ||
bb58f747 | 1433 | sk->sk_type = parent->sk_type; |
c5daa683 | 1434 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
bb58f747 | 1435 | |
715ec005 | 1436 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
1437 | chan->imtu = pchan->imtu; |
1438 | chan->omtu = pchan->omtu; | |
b4450035 | 1439 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 1440 | chan->mode = pchan->mode; |
47d1ec61 GP |
1441 | chan->fcs = pchan->fcs; |
1442 | chan->max_tx = pchan->max_tx; | |
1443 | chan->tx_win = pchan->tx_win; | |
6b3c7104 | 1444 | chan->tx_win_max = pchan->tx_win_max; |
4343478f | 1445 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 1446 | chan->flags = pchan->flags; |
0cd75f7e JH |
1447 | chan->tx_credits = pchan->tx_credits; |
1448 | chan->rx_credits = pchan->rx_credits; | |
6230c9b4 | 1449 | |
7a8e5a31 JH |
1450 | if (chan->chan_type == L2CAP_CHAN_FIXED) { |
1451 | chan->scid = pchan->scid; | |
1452 | chan->dcid = pchan->scid; | |
1453 | } | |
1454 | ||
6230c9b4 | 1455 | security_sk_clone(parent, sk); |
bb58f747 | 1456 | } else { |
715ec005 GP |
1457 | switch (sk->sk_type) { |
1458 | case SOCK_RAW: | |
1459 | chan->chan_type = L2CAP_CHAN_RAW; | |
1460 | break; | |
1461 | case SOCK_DGRAM: | |
1462 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
2edf870d | 1463 | bt_sk(sk)->skb_msg_name = l2cap_skb_msg_name; |
715ec005 GP |
1464 | break; |
1465 | case SOCK_SEQPACKET: | |
1466 | case SOCK_STREAM: | |
1467 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
1468 | break; | |
1469 | } | |
1470 | ||
0c1bc5c6 GP |
1471 | chan->imtu = L2CAP_DEFAULT_MTU; |
1472 | chan->omtu = 0; | |
bb58f747 | 1473 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 1474 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 1475 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 1476 | } else { |
0c1bc5c6 | 1477 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 1478 | } |
bd4b1653 AE |
1479 | |
1480 | l2cap_chan_set_defaults(chan); | |
bb58f747 GP |
1481 | } |
1482 | ||
1483 | /* Default config options */ | |
0c1bc5c6 | 1484 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
1485 | |
1486 | chan->data = sk; | |
1487 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
1488 | } |
1489 | ||
1490 | static struct proto l2cap_proto = { | |
1491 | .name = "L2CAP", | |
1492 | .owner = THIS_MODULE, | |
1493 | .obj_size = sizeof(struct l2cap_pinfo) | |
1494 | }; | |
1495 | ||
2d792818 GP |
1496 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, |
1497 | int proto, gfp_t prio) | |
bb58f747 GP |
1498 | { |
1499 | struct sock *sk; | |
dc50a06d | 1500 | struct l2cap_chan *chan; |
bb58f747 GP |
1501 | |
1502 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
1503 | if (!sk) | |
1504 | return NULL; | |
1505 | ||
1506 | sock_init_data(sock, sk); | |
1507 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1508 | ||
1509 | sk->sk_destruct = l2cap_sock_destruct; | |
ba13ccd9 | 1510 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
bb58f747 GP |
1511 | |
1512 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1513 | ||
1514 | sk->sk_protocol = proto; | |
1515 | sk->sk_state = BT_OPEN; | |
1516 | ||
eef1d9b6 | 1517 | chan = l2cap_chan_create(); |
dc50a06d | 1518 | if (!chan) { |
49dfbb91 | 1519 | sk_free(sk); |
dc50a06d GP |
1520 | return NULL; |
1521 | } | |
1522 | ||
61d6ef3e MM |
1523 | l2cap_chan_hold(chan); |
1524 | ||
dc50a06d GP |
1525 | l2cap_pi(sk)->chan = chan; |
1526 | ||
bb58f747 GP |
1527 | return sk; |
1528 | } | |
1529 | ||
1530 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1531 | int kern) | |
1532 | { | |
1533 | struct sock *sk; | |
1534 | ||
1535 | BT_DBG("sock %p", sock); | |
1536 | ||
1537 | sock->state = SS_UNCONNECTED; | |
1538 | ||
1539 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
2d792818 | 1540 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) |
bb58f747 GP |
1541 | return -ESOCKTNOSUPPORT; |
1542 | ||
1543 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1544 | return -EPERM; | |
1545 | ||
1546 | sock->ops = &l2cap_sock_ops; | |
1547 | ||
1548 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1549 | if (!sk) | |
1550 | return -ENOMEM; | |
1551 | ||
1552 | l2cap_sock_init(sk, NULL); | |
5b28d95c | 1553 | bt_sock_link(&l2cap_sk_list, sk); |
bb58f747 GP |
1554 | return 0; |
1555 | } | |
1556 | ||
cf2f90f5 | 1557 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1558 | .family = PF_BLUETOOTH, |
1559 | .owner = THIS_MODULE, | |
1560 | .release = l2cap_sock_release, | |
1561 | .bind = l2cap_sock_bind, | |
1562 | .connect = l2cap_sock_connect, | |
1563 | .listen = l2cap_sock_listen, | |
1564 | .accept = l2cap_sock_accept, | |
1565 | .getname = l2cap_sock_getname, | |
1566 | .sendmsg = l2cap_sock_sendmsg, | |
1567 | .recvmsg = l2cap_sock_recvmsg, | |
1568 | .poll = bt_sock_poll, | |
1569 | .ioctl = bt_sock_ioctl, | |
1570 | .mmap = sock_no_mmap, | |
1571 | .socketpair = sock_no_socketpair, | |
1572 | .shutdown = l2cap_sock_shutdown, | |
1573 | .setsockopt = l2cap_sock_setsockopt, | |
1574 | .getsockopt = l2cap_sock_getsockopt | |
1575 | }; | |
1576 | ||
bb58f747 GP |
1577 | static const struct net_proto_family l2cap_sock_family_ops = { |
1578 | .family = PF_BLUETOOTH, | |
1579 | .owner = THIS_MODULE, | |
1580 | .create = l2cap_sock_create, | |
1581 | }; | |
1582 | ||
1583 | int __init l2cap_init_sockets(void) | |
1584 | { | |
e2174ca4 | 1585 | int err; |
bb58f747 | 1586 | |
e2174ca4 GP |
1587 | err = proto_register(&l2cap_proto, 0); |
1588 | if (err < 0) | |
1589 | return err; | |
bb58f747 | 1590 | |
e2174ca4 | 1591 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
5b28d95c MY |
1592 | if (err < 0) { |
1593 | BT_ERR("L2CAP socket registration failed"); | |
e2174ca4 | 1594 | goto error; |
5b28d95c MY |
1595 | } |
1596 | ||
b0316615 | 1597 | err = bt_procfs_init(&init_net, "l2cap", &l2cap_sk_list, |
2d792818 | 1598 | NULL); |
5b28d95c MY |
1599 | if (err < 0) { |
1600 | BT_ERR("Failed to create L2CAP proc file"); | |
1601 | bt_sock_unregister(BTPROTO_L2CAP); | |
1602 | goto error; | |
1603 | } | |
bb58f747 | 1604 | |
e2174ca4 | 1605 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1606 | |
e2174ca4 | 1607 | return 0; |
bb58f747 GP |
1608 | |
1609 | error: | |
e2174ca4 GP |
1610 | proto_unregister(&l2cap_proto); |
1611 | return err; | |
bb58f747 GP |
1612 | } |
1613 | ||
1614 | void l2cap_cleanup_sockets(void) | |
1615 | { | |
5b28d95c | 1616 | bt_procfs_cleanup(&init_net, "l2cap"); |
5e9d7f86 | 1617 | bt_sock_unregister(BTPROTO_L2CAP); |
e2174ca4 | 1618 | proto_unregister(&l2cap_proto); |
bb58f747 | 1619 | } |