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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
4 | ||
5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License version 2 as | |
9 | published by the Free Software Foundation; | |
10 | ||
11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | ||
8e87d142 YH |
20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
22 | SOFTWARE IS DISCLAIMED. |
23 | */ | |
24 | ||
25 | /* Bluetooth SCO sockets. */ | |
26 | ||
1da177e4 | 27 | #include <linux/module.h> |
aef7d97c MH |
28 | #include <linux/debugfs.h> |
29 | #include <linux/seq_file.h> | |
1da177e4 LT |
30 | |
31 | #include <net/bluetooth/bluetooth.h> | |
32 | #include <net/bluetooth/hci_core.h> | |
33 | #include <net/bluetooth/sco.h> | |
34 | ||
eb939922 | 35 | static bool disable_esco; |
1da177e4 | 36 | |
90ddc4f0 | 37 | static const struct proto_ops sco_sock_ops; |
1da177e4 LT |
38 | |
39 | static struct bt_sock_list sco_sk_list = { | |
d5fb2962 | 40 | .lock = __RW_LOCK_UNLOCKED(sco_sk_list.lock) |
1da177e4 LT |
41 | }; |
42 | ||
43 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent); | |
44 | static void sco_chan_del(struct sock *sk, int err); | |
45 | ||
1da177e4 LT |
46 | static void sco_sock_close(struct sock *sk); |
47 | static void sco_sock_kill(struct sock *sk); | |
48 | ||
49 | /* ---- SCO timers ---- */ | |
50 | static void sco_sock_timeout(unsigned long arg) | |
51 | { | |
52 | struct sock *sk = (struct sock *) arg; | |
53 | ||
54 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
55 | ||
56 | bh_lock_sock(sk); | |
57 | sk->sk_err = ETIMEDOUT; | |
58 | sk->sk_state_change(sk); | |
59 | bh_unlock_sock(sk); | |
60 | ||
61 | sco_sock_kill(sk); | |
62 | sock_put(sk); | |
63 | } | |
64 | ||
65 | static void sco_sock_set_timer(struct sock *sk, long timeout) | |
66 | { | |
67 | BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout); | |
68 | sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout); | |
69 | } | |
70 | ||
71 | static void sco_sock_clear_timer(struct sock *sk) | |
72 | { | |
73 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
74 | sk_stop_timer(sk, &sk->sk_timer); | |
75 | } | |
76 | ||
1da177e4 | 77 | /* ---- SCO connections ---- */ |
519e42b3 | 78 | static struct sco_conn *sco_conn_add(struct hci_conn *hcon) |
1da177e4 LT |
79 | { |
80 | struct hci_dev *hdev = hcon->hdev; | |
25ea6db0 | 81 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 | 82 | |
519e42b3 | 83 | if (conn) |
1da177e4 LT |
84 | return conn; |
85 | ||
c10cc5a9 | 86 | conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL); |
25ea6db0 | 87 | if (!conn) |
1da177e4 | 88 | return NULL; |
1da177e4 LT |
89 | |
90 | spin_lock_init(&conn->lock); | |
91 | ||
92 | hcon->sco_data = conn; | |
93 | conn->hcon = hcon; | |
94 | ||
95 | conn->src = &hdev->bdaddr; | |
96 | conn->dst = &hcon->dst; | |
97 | ||
98 | if (hdev->sco_mtu > 0) | |
99 | conn->mtu = hdev->sco_mtu; | |
100 | else | |
101 | conn->mtu = 60; | |
102 | ||
103 | BT_DBG("hcon %p conn %p", hcon, conn); | |
25ea6db0 | 104 | |
1da177e4 LT |
105 | return conn; |
106 | } | |
107 | ||
6039aa73 | 108 | static struct sock *sco_chan_get(struct sco_conn *conn) |
1da177e4 LT |
109 | { |
110 | struct sock *sk = NULL; | |
111 | sco_conn_lock(conn); | |
112 | sk = conn->sk; | |
113 | sco_conn_unlock(conn); | |
114 | return sk; | |
115 | } | |
116 | ||
117 | static int sco_conn_del(struct hci_conn *hcon, int err) | |
118 | { | |
735cbc47 | 119 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 LT |
120 | struct sock *sk; |
121 | ||
735cbc47 | 122 | if (!conn) |
1da177e4 LT |
123 | return 0; |
124 | ||
125 | BT_DBG("hcon %p conn %p, err %d", hcon, conn, err); | |
126 | ||
127 | /* Kill socket */ | |
735cbc47 AE |
128 | sk = sco_chan_get(conn); |
129 | if (sk) { | |
1da177e4 LT |
130 | bh_lock_sock(sk); |
131 | sco_sock_clear_timer(sk); | |
132 | sco_chan_del(sk, err); | |
133 | bh_unlock_sock(sk); | |
134 | sco_sock_kill(sk); | |
135 | } | |
136 | ||
137 | hcon->sco_data = NULL; | |
138 | kfree(conn); | |
139 | return 0; | |
140 | } | |
141 | ||
6039aa73 GP |
142 | static int sco_chan_add(struct sco_conn *conn, struct sock *sk, |
143 | struct sock *parent) | |
1da177e4 LT |
144 | { |
145 | int err = 0; | |
146 | ||
147 | sco_conn_lock(conn); | |
b9dbdbc1 | 148 | if (conn->sk) |
1da177e4 | 149 | err = -EBUSY; |
b9dbdbc1 | 150 | else |
1da177e4 | 151 | __sco_chan_add(conn, sk, parent); |
b9dbdbc1 | 152 | |
1da177e4 LT |
153 | sco_conn_unlock(conn); |
154 | return err; | |
155 | } | |
156 | ||
157 | static int sco_connect(struct sock *sk) | |
158 | { | |
159 | bdaddr_t *src = &bt_sk(sk)->src; | |
160 | bdaddr_t *dst = &bt_sk(sk)->dst; | |
161 | struct sco_conn *conn; | |
162 | struct hci_conn *hcon; | |
163 | struct hci_dev *hdev; | |
b6a0dc82 | 164 | int err, type; |
1da177e4 | 165 | |
6ed93dc6 | 166 | BT_DBG("%pMR -> %pMR", src, dst); |
1da177e4 | 167 | |
735cbc47 AE |
168 | hdev = hci_get_route(dst, src); |
169 | if (!hdev) | |
1da177e4 LT |
170 | return -EHOSTUNREACH; |
171 | ||
09fd0de5 | 172 | hci_dev_lock(hdev); |
1da177e4 | 173 | |
7cb127d5 MH |
174 | if (lmp_esco_capable(hdev) && !disable_esco) |
175 | type = ESCO_LINK; | |
176 | else | |
177 | type = SCO_LINK; | |
b6a0dc82 | 178 | |
e660ed6c | 179 | hcon = hci_connect_sco(hdev, type, dst); |
30e76272 VT |
180 | if (IS_ERR(hcon)) { |
181 | err = PTR_ERR(hcon); | |
1da177e4 | 182 | goto done; |
30e76272 | 183 | } |
1da177e4 | 184 | |
519e42b3 | 185 | conn = sco_conn_add(hcon); |
1da177e4 | 186 | if (!conn) { |
76a68ba0 | 187 | hci_conn_drop(hcon); |
30e76272 | 188 | err = -ENOMEM; |
1da177e4 LT |
189 | goto done; |
190 | } | |
191 | ||
192 | /* Update source addr of the socket */ | |
193 | bacpy(src, conn->src); | |
194 | ||
195 | err = sco_chan_add(conn, sk, NULL); | |
196 | if (err) | |
197 | goto done; | |
198 | ||
199 | if (hcon->state == BT_CONNECTED) { | |
200 | sco_sock_clear_timer(sk); | |
201 | sk->sk_state = BT_CONNECTED; | |
202 | } else { | |
203 | sk->sk_state = BT_CONNECT; | |
204 | sco_sock_set_timer(sk, sk->sk_sndtimeo); | |
205 | } | |
b6a0dc82 | 206 | |
1da177e4 | 207 | done: |
09fd0de5 | 208 | hci_dev_unlock(hdev); |
1da177e4 LT |
209 | hci_dev_put(hdev); |
210 | return err; | |
211 | } | |
212 | ||
6039aa73 | 213 | static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len) |
1da177e4 LT |
214 | { |
215 | struct sco_conn *conn = sco_pi(sk)->conn; | |
216 | struct sk_buff *skb; | |
088ce088 | 217 | int err; |
1da177e4 LT |
218 | |
219 | /* Check outgoing MTU */ | |
220 | if (len > conn->mtu) | |
221 | return -EINVAL; | |
222 | ||
223 | BT_DBG("sk %p len %d", sk, len); | |
224 | ||
088ce088 | 225 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
b9dbdbc1 | 226 | if (!skb) |
1da177e4 LT |
227 | return err; |
228 | ||
088ce088 | 229 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { |
b9dbdbc1 GP |
230 | kfree_skb(skb); |
231 | return -EFAULT; | |
1da177e4 LT |
232 | } |
233 | ||
0d861d8b | 234 | hci_send_sco(conn->hcon, skb); |
1da177e4 | 235 | |
088ce088 | 236 | return len; |
1da177e4 LT |
237 | } |
238 | ||
6039aa73 | 239 | static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
240 | { |
241 | struct sock *sk = sco_chan_get(conn); | |
242 | ||
243 | if (!sk) | |
244 | goto drop; | |
245 | ||
246 | BT_DBG("sk %p len %d", sk, skb->len); | |
247 | ||
248 | if (sk->sk_state != BT_CONNECTED) | |
249 | goto drop; | |
250 | ||
251 | if (!sock_queue_rcv_skb(sk, skb)) | |
252 | return; | |
253 | ||
254 | drop: | |
255 | kfree_skb(skb); | |
1da177e4 LT |
256 | } |
257 | ||
258 | /* -------- Socket interface ---------- */ | |
fb334059 | 259 | static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba) |
1da177e4 | 260 | { |
fb334059 MH |
261 | struct sock *sk; |
262 | ||
b67bfe0d | 263 | sk_for_each(sk, &sco_sk_list.head) { |
fb334059 MH |
264 | if (sk->sk_state != BT_LISTEN) |
265 | continue; | |
1da177e4 | 266 | |
1da177e4 | 267 | if (!bacmp(&bt_sk(sk)->src, ba)) |
fb334059 MH |
268 | return sk; |
269 | } | |
270 | ||
271 | return NULL; | |
1da177e4 LT |
272 | } |
273 | ||
274 | /* Find socket listening on source bdaddr. | |
275 | * Returns closest match. | |
276 | */ | |
277 | static struct sock *sco_get_sock_listen(bdaddr_t *src) | |
278 | { | |
279 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 LT |
280 | |
281 | read_lock(&sco_sk_list.lock); | |
282 | ||
b67bfe0d | 283 | sk_for_each(sk, &sco_sk_list.head) { |
1da177e4 LT |
284 | if (sk->sk_state != BT_LISTEN) |
285 | continue; | |
286 | ||
287 | /* Exact match. */ | |
288 | if (!bacmp(&bt_sk(sk)->src, src)) | |
289 | break; | |
290 | ||
291 | /* Closest match */ | |
292 | if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY)) | |
293 | sk1 = sk; | |
294 | } | |
295 | ||
296 | read_unlock(&sco_sk_list.lock); | |
297 | ||
b67bfe0d | 298 | return sk ? sk : sk1; |
1da177e4 LT |
299 | } |
300 | ||
301 | static void sco_sock_destruct(struct sock *sk) | |
302 | { | |
303 | BT_DBG("sk %p", sk); | |
304 | ||
305 | skb_queue_purge(&sk->sk_receive_queue); | |
306 | skb_queue_purge(&sk->sk_write_queue); | |
307 | } | |
308 | ||
309 | static void sco_sock_cleanup_listen(struct sock *parent) | |
310 | { | |
311 | struct sock *sk; | |
312 | ||
313 | BT_DBG("parent %p", parent); | |
314 | ||
315 | /* Close not yet accepted channels */ | |
316 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
317 | sco_sock_close(sk); | |
318 | sco_sock_kill(sk); | |
319 | } | |
320 | ||
321 | parent->sk_state = BT_CLOSED; | |
322 | sock_set_flag(parent, SOCK_ZAPPED); | |
323 | } | |
324 | ||
325 | /* Kill socket (only if zapped and orphan) | |
326 | * Must be called on unlocked socket. | |
327 | */ | |
328 | static void sco_sock_kill(struct sock *sk) | |
329 | { | |
330 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
331 | return; | |
332 | ||
333 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
334 | ||
335 | /* Kill poor orphan */ | |
336 | bt_sock_unlink(&sco_sk_list, sk); | |
337 | sock_set_flag(sk, SOCK_DEAD); | |
338 | sock_put(sk); | |
339 | } | |
340 | ||
fd0b3ff7 | 341 | static void __sco_sock_close(struct sock *sk) |
1da177e4 | 342 | { |
fd0b3ff7 | 343 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
1da177e4 LT |
344 | |
345 | switch (sk->sk_state) { | |
346 | case BT_LISTEN: | |
347 | sco_sock_cleanup_listen(sk); | |
348 | break; | |
349 | ||
350 | case BT_CONNECTED: | |
351 | case BT_CONFIG: | |
b7e98b51 | 352 | if (sco_pi(sk)->conn->hcon) { |
4a77708b LAD |
353 | sk->sk_state = BT_DISCONN; |
354 | sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); | |
76a68ba0 | 355 | hci_conn_drop(sco_pi(sk)->conn->hcon); |
4a77708b LAD |
356 | sco_pi(sk)->conn->hcon = NULL; |
357 | } else | |
358 | sco_chan_del(sk, ECONNRESET); | |
359 | break; | |
360 | ||
eb20ff9c | 361 | case BT_CONNECT2: |
1da177e4 LT |
362 | case BT_CONNECT: |
363 | case BT_DISCONN: | |
364 | sco_chan_del(sk, ECONNRESET); | |
365 | break; | |
366 | ||
367 | default: | |
368 | sock_set_flag(sk, SOCK_ZAPPED); | |
369 | break; | |
3ff50b79 | 370 | } |
fd0b3ff7 | 371 | } |
1da177e4 | 372 | |
fd0b3ff7 MH |
373 | /* Must be called on unlocked socket. */ |
374 | static void sco_sock_close(struct sock *sk) | |
375 | { | |
376 | sco_sock_clear_timer(sk); | |
377 | lock_sock(sk); | |
378 | __sco_sock_close(sk); | |
1da177e4 | 379 | release_sock(sk); |
1da177e4 LT |
380 | sco_sock_kill(sk); |
381 | } | |
382 | ||
383 | static void sco_sock_init(struct sock *sk, struct sock *parent) | |
384 | { | |
385 | BT_DBG("sk %p", sk); | |
386 | ||
6230c9b4 | 387 | if (parent) { |
1da177e4 | 388 | sk->sk_type = parent->sk_type; |
20714bfe | 389 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
6230c9b4 PM |
390 | security_sk_clone(parent, sk); |
391 | } | |
1da177e4 LT |
392 | } |
393 | ||
394 | static struct proto sco_proto = { | |
395 | .name = "SCO", | |
396 | .owner = THIS_MODULE, | |
397 | .obj_size = sizeof(struct sco_pinfo) | |
398 | }; | |
399 | ||
1b8d7ae4 | 400 | static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
1da177e4 LT |
401 | { |
402 | struct sock *sk; | |
403 | ||
6257ff21 | 404 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto); |
1da177e4 LT |
405 | if (!sk) |
406 | return NULL; | |
407 | ||
408 | sock_init_data(sock, sk); | |
409 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
410 | ||
411 | sk->sk_destruct = sco_sock_destruct; | |
412 | sk->sk_sndtimeo = SCO_CONN_TIMEOUT; | |
413 | ||
414 | sock_reset_flag(sk, SOCK_ZAPPED); | |
415 | ||
416 | sk->sk_protocol = proto; | |
417 | sk->sk_state = BT_OPEN; | |
418 | ||
b24b8a24 | 419 | setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk); |
1da177e4 LT |
420 | |
421 | bt_sock_link(&sco_sk_list, sk); | |
422 | return sk; | |
423 | } | |
424 | ||
3f378b68 EP |
425 | static int sco_sock_create(struct net *net, struct socket *sock, int protocol, |
426 | int kern) | |
1da177e4 LT |
427 | { |
428 | struct sock *sk; | |
429 | ||
430 | BT_DBG("sock %p", sock); | |
431 | ||
432 | sock->state = SS_UNCONNECTED; | |
433 | ||
434 | if (sock->type != SOCK_SEQPACKET) | |
435 | return -ESOCKTNOSUPPORT; | |
436 | ||
437 | sock->ops = &sco_sock_ops; | |
438 | ||
1b8d7ae4 | 439 | sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC); |
74da626a | 440 | if (!sk) |
1da177e4 LT |
441 | return -ENOMEM; |
442 | ||
443 | sco_sock_init(sk, NULL); | |
444 | return 0; | |
445 | } | |
446 | ||
447 | static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
448 | { | |
449 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
450 | struct sock *sk = sock->sk; | |
1da177e4 LT |
451 | int err = 0; |
452 | ||
6ed93dc6 | 453 | BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
1da177e4 LT |
454 | |
455 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
456 | return -EINVAL; | |
457 | ||
458 | lock_sock(sk); | |
459 | ||
460 | if (sk->sk_state != BT_OPEN) { | |
461 | err = -EBADFD; | |
462 | goto done; | |
463 | } | |
464 | ||
8ed21f7e MH |
465 | if (sk->sk_type != SOCK_SEQPACKET) { |
466 | err = -EINVAL; | |
467 | goto done; | |
1da177e4 LT |
468 | } |
469 | ||
8ed21f7e MH |
470 | bacpy(&bt_sk(sk)->src, &sa->sco_bdaddr); |
471 | ||
472 | sk->sk_state = BT_BOUND; | |
1da177e4 LT |
473 | |
474 | done: | |
475 | release_sock(sk); | |
476 | return err; | |
477 | } | |
478 | ||
479 | static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
480 | { | |
481 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
482 | struct sock *sk = sock->sk; | |
92f185c8 | 483 | int err; |
1da177e4 LT |
484 | |
485 | BT_DBG("sk %p", sk); | |
486 | ||
6503d961 CG |
487 | if (alen < sizeof(struct sockaddr_sco) || |
488 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
489 | return -EINVAL; |
490 | ||
491 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) | |
492 | return -EBADFD; | |
493 | ||
494 | if (sk->sk_type != SOCK_SEQPACKET) | |
495 | return -EINVAL; | |
496 | ||
497 | lock_sock(sk); | |
498 | ||
499 | /* Set destination address and psm */ | |
500 | bacpy(&bt_sk(sk)->dst, &sa->sco_bdaddr); | |
501 | ||
735cbc47 AE |
502 | err = sco_connect(sk); |
503 | if (err) | |
1da177e4 LT |
504 | goto done; |
505 | ||
8e87d142 | 506 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99 | 507 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4 LT |
508 | |
509 | done: | |
510 | release_sock(sk); | |
511 | return err; | |
512 | } | |
513 | ||
514 | static int sco_sock_listen(struct socket *sock, int backlog) | |
515 | { | |
516 | struct sock *sk = sock->sk; | |
fb334059 | 517 | bdaddr_t *src = &bt_sk(sk)->src; |
1da177e4 LT |
518 | int err = 0; |
519 | ||
520 | BT_DBG("sk %p backlog %d", sk, backlog); | |
521 | ||
522 | lock_sock(sk); | |
523 | ||
7d5d775a | 524 | if (sk->sk_state != BT_BOUND) { |
1da177e4 LT |
525 | err = -EBADFD; |
526 | goto done; | |
527 | } | |
528 | ||
7d5d775a MH |
529 | if (sk->sk_type != SOCK_SEQPACKET) { |
530 | err = -EINVAL; | |
531 | goto done; | |
532 | } | |
533 | ||
fb334059 MH |
534 | write_lock(&sco_sk_list.lock); |
535 | ||
536 | if (__sco_get_sock_listen_by_addr(src)) { | |
537 | err = -EADDRINUSE; | |
538 | goto unlock; | |
539 | } | |
540 | ||
1da177e4 LT |
541 | sk->sk_max_ack_backlog = backlog; |
542 | sk->sk_ack_backlog = 0; | |
fb334059 | 543 | |
1da177e4 LT |
544 | sk->sk_state = BT_LISTEN; |
545 | ||
fb334059 MH |
546 | unlock: |
547 | write_unlock(&sco_sk_list.lock); | |
548 | ||
1da177e4 LT |
549 | done: |
550 | release_sock(sk); | |
551 | return err; | |
552 | } | |
553 | ||
554 | static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flags) | |
555 | { | |
556 | DECLARE_WAITQUEUE(wait, current); | |
557 | struct sock *sk = sock->sk, *ch; | |
558 | long timeo; | |
559 | int err = 0; | |
560 | ||
561 | lock_sock(sk); | |
562 | ||
1da177e4 LT |
563 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
564 | ||
565 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
566 | ||
567 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 568 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3c | 569 | while (1) { |
1da177e4 | 570 | set_current_state(TASK_INTERRUPTIBLE); |
552b0d3c PH |
571 | |
572 | if (sk->sk_state != BT_LISTEN) { | |
573 | err = -EBADFD; | |
1da177e4 LT |
574 | break; |
575 | } | |
576 | ||
552b0d3c PH |
577 | ch = bt_accept_dequeue(sk, newsock); |
578 | if (ch) | |
579 | break; | |
1da177e4 | 580 | |
552b0d3c PH |
581 | if (!timeo) { |
582 | err = -EAGAIN; | |
1da177e4 LT |
583 | break; |
584 | } | |
585 | ||
586 | if (signal_pending(current)) { | |
587 | err = sock_intr_errno(timeo); | |
588 | break; | |
589 | } | |
552b0d3c PH |
590 | |
591 | release_sock(sk); | |
592 | timeo = schedule_timeout(timeo); | |
593 | lock_sock(sk); | |
1da177e4 | 594 | } |
552b0d3c | 595 | __set_current_state(TASK_RUNNING); |
aa395145 | 596 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
597 | |
598 | if (err) | |
599 | goto done; | |
600 | ||
601 | newsock->state = SS_CONNECTED; | |
602 | ||
603 | BT_DBG("new socket %p", ch); | |
604 | ||
605 | done: | |
606 | release_sock(sk); | |
607 | return err; | |
608 | } | |
609 | ||
610 | static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) | |
611 | { | |
612 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
613 | struct sock *sk = sock->sk; | |
614 | ||
615 | BT_DBG("sock %p, sk %p", sock, sk); | |
616 | ||
617 | addr->sa_family = AF_BLUETOOTH; | |
618 | *len = sizeof(struct sockaddr_sco); | |
619 | ||
620 | if (peer) | |
621 | bacpy(&sa->sco_bdaddr, &bt_sk(sk)->dst); | |
622 | else | |
623 | bacpy(&sa->sco_bdaddr, &bt_sk(sk)->src); | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
8e87d142 | 628 | static int sco_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
1da177e4 LT |
629 | struct msghdr *msg, size_t len) |
630 | { | |
631 | struct sock *sk = sock->sk; | |
b9dbdbc1 | 632 | int err; |
1da177e4 LT |
633 | |
634 | BT_DBG("sock %p, sk %p", sock, sk); | |
635 | ||
c1cbe4b7 BL |
636 | err = sock_error(sk); |
637 | if (err) | |
638 | return err; | |
1da177e4 LT |
639 | |
640 | if (msg->msg_flags & MSG_OOB) | |
641 | return -EOPNOTSUPP; | |
642 | ||
643 | lock_sock(sk); | |
644 | ||
645 | if (sk->sk_state == BT_CONNECTED) | |
646 | err = sco_send_frame(sk, msg, len); | |
647 | else | |
648 | err = -ENOTCONN; | |
649 | ||
650 | release_sock(sk); | |
651 | return err; | |
652 | } | |
653 | ||
fa5513be FD |
654 | static void sco_conn_defer_accept(struct hci_conn *conn, int mask) |
655 | { | |
656 | struct hci_dev *hdev = conn->hdev; | |
657 | ||
658 | BT_DBG("conn %p", conn); | |
659 | ||
660 | conn->state = BT_CONFIG; | |
661 | ||
662 | if (!lmp_esco_capable(hdev)) { | |
663 | struct hci_cp_accept_conn_req cp; | |
664 | ||
665 | bacpy(&cp.bdaddr, &conn->dst); | |
666 | ||
667 | if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) | |
668 | cp.role = 0x00; /* Become master */ | |
669 | else | |
670 | cp.role = 0x01; /* Remain slave */ | |
671 | ||
672 | hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); | |
673 | } else { | |
674 | struct hci_cp_accept_sync_conn_req cp; | |
675 | ||
676 | bacpy(&cp.bdaddr, &conn->dst); | |
677 | cp.pkt_type = cpu_to_le16(conn->pkt_type); | |
678 | ||
679 | cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40); | |
680 | cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40); | |
681 | cp.max_latency = __constant_cpu_to_le16(0xffff); | |
682 | cp.content_format = cpu_to_le16(hdev->voice_setting); | |
683 | cp.retrans_effort = 0xff; | |
684 | ||
685 | hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, | |
686 | sizeof(cp), &cp); | |
687 | } | |
688 | } | |
689 | ||
20714bfe FD |
690 | static int sco_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
691 | struct msghdr *msg, size_t len, int flags) | |
692 | { | |
693 | struct sock *sk = sock->sk; | |
694 | struct sco_pinfo *pi = sco_pi(sk); | |
695 | ||
696 | lock_sock(sk); | |
697 | ||
698 | if (sk->sk_state == BT_CONNECT2 && | |
699 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { | |
fa5513be | 700 | sco_conn_defer_accept(pi->conn->hcon, 0); |
20714bfe | 701 | sk->sk_state = BT_CONFIG; |
c8c49917 | 702 | msg->msg_namelen = 0; |
20714bfe FD |
703 | |
704 | release_sock(sk); | |
705 | return 0; | |
706 | } | |
707 | ||
708 | release_sock(sk); | |
709 | ||
710 | return bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
711 | } | |
712 | ||
b7058842 | 713 | static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
1da177e4 LT |
714 | { |
715 | struct sock *sk = sock->sk; | |
716 | int err = 0; | |
b96e9c67 | 717 | u32 opt; |
1da177e4 LT |
718 | |
719 | BT_DBG("sk %p", sk); | |
720 | ||
721 | lock_sock(sk); | |
722 | ||
723 | switch (optname) { | |
b96e9c67 FD |
724 | |
725 | case BT_DEFER_SETUP: | |
726 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
727 | err = -EINVAL; | |
728 | break; | |
729 | } | |
730 | ||
731 | if (get_user(opt, (u32 __user *) optval)) { | |
732 | err = -EFAULT; | |
733 | break; | |
734 | } | |
735 | ||
736 | if (opt) | |
737 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
738 | else | |
739 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
740 | break; | |
741 | ||
1da177e4 LT |
742 | default: |
743 | err = -ENOPROTOOPT; | |
744 | break; | |
745 | } | |
746 | ||
747 | release_sock(sk); | |
748 | return err; | |
749 | } | |
750 | ||
d58daf42 | 751 | static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
1da177e4 LT |
752 | { |
753 | struct sock *sk = sock->sk; | |
754 | struct sco_options opts; | |
755 | struct sco_conninfo cinfo; | |
8e87d142 | 756 | int len, err = 0; |
1da177e4 LT |
757 | |
758 | BT_DBG("sk %p", sk); | |
759 | ||
760 | if (get_user(len, optlen)) | |
761 | return -EFAULT; | |
762 | ||
763 | lock_sock(sk); | |
764 | ||
765 | switch (optname) { | |
766 | case SCO_OPTIONS: | |
9d225d22 JH |
767 | if (sk->sk_state != BT_CONNECTED && |
768 | !(sk->sk_state == BT_CONNECT2 && | |
769 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
770 | err = -ENOTCONN; |
771 | break; | |
772 | } | |
773 | ||
774 | opts.mtu = sco_pi(sk)->conn->mtu; | |
775 | ||
776 | BT_DBG("mtu %d", opts.mtu); | |
777 | ||
778 | len = min_t(unsigned int, len, sizeof(opts)); | |
779 | if (copy_to_user(optval, (char *)&opts, len)) | |
780 | err = -EFAULT; | |
781 | ||
782 | break; | |
783 | ||
784 | case SCO_CONNINFO: | |
9d225d22 JH |
785 | if (sk->sk_state != BT_CONNECTED && |
786 | !(sk->sk_state == BT_CONNECT2 && | |
787 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
788 | err = -ENOTCONN; |
789 | break; | |
790 | } | |
791 | ||
c4c896e1 | 792 | memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4 LT |
793 | cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; |
794 | memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); | |
795 | ||
796 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
797 | if (copy_to_user(optval, (char *)&cinfo, len)) | |
798 | err = -EFAULT; | |
799 | ||
800 | break; | |
801 | ||
802 | default: | |
803 | err = -ENOPROTOOPT; | |
804 | break; | |
805 | } | |
806 | ||
807 | release_sock(sk); | |
808 | return err; | |
809 | } | |
810 | ||
d58daf42 MH |
811 | static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) |
812 | { | |
813 | struct sock *sk = sock->sk; | |
814 | int len, err = 0; | |
815 | ||
816 | BT_DBG("sk %p", sk); | |
817 | ||
818 | if (level == SOL_SCO) | |
819 | return sco_sock_getsockopt_old(sock, optname, optval, optlen); | |
820 | ||
821 | if (get_user(len, optlen)) | |
822 | return -EFAULT; | |
823 | ||
824 | lock_sock(sk); | |
825 | ||
826 | switch (optname) { | |
b96e9c67 FD |
827 | |
828 | case BT_DEFER_SETUP: | |
829 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
830 | err = -EINVAL; | |
831 | break; | |
832 | } | |
833 | ||
834 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), | |
835 | (u32 __user *) optval)) | |
836 | err = -EFAULT; | |
837 | ||
838 | break; | |
839 | ||
d58daf42 MH |
840 | default: |
841 | err = -ENOPROTOOPT; | |
842 | break; | |
843 | } | |
844 | ||
845 | release_sock(sk); | |
846 | return err; | |
847 | } | |
848 | ||
fd0b3ff7 MH |
849 | static int sco_sock_shutdown(struct socket *sock, int how) |
850 | { | |
851 | struct sock *sk = sock->sk; | |
852 | int err = 0; | |
853 | ||
854 | BT_DBG("sock %p, sk %p", sock, sk); | |
855 | ||
856 | if (!sk) | |
857 | return 0; | |
858 | ||
859 | lock_sock(sk); | |
860 | if (!sk->sk_shutdown) { | |
861 | sk->sk_shutdown = SHUTDOWN_MASK; | |
862 | sco_sock_clear_timer(sk); | |
863 | __sco_sock_close(sk); | |
864 | ||
865 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
866 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
be7c2b99 | 867 | sk->sk_lingertime); |
fd0b3ff7 MH |
868 | } |
869 | release_sock(sk); | |
870 | return err; | |
871 | } | |
872 | ||
1da177e4 LT |
873 | static int sco_sock_release(struct socket *sock) |
874 | { | |
875 | struct sock *sk = sock->sk; | |
876 | int err = 0; | |
877 | ||
878 | BT_DBG("sock %p, sk %p", sock, sk); | |
879 | ||
880 | if (!sk) | |
881 | return 0; | |
882 | ||
883 | sco_sock_close(sk); | |
884 | ||
885 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) { | |
886 | lock_sock(sk); | |
887 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
888 | release_sock(sk); | |
889 | } | |
890 | ||
891 | sock_orphan(sk); | |
892 | sco_sock_kill(sk); | |
893 | return err; | |
894 | } | |
895 | ||
896 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent) | |
897 | { | |
898 | BT_DBG("conn %p", conn); | |
899 | ||
900 | sco_pi(sk)->conn = conn; | |
901 | conn->sk = sk; | |
902 | ||
903 | if (parent) | |
904 | bt_accept_enqueue(parent, sk); | |
905 | } | |
906 | ||
8e87d142 | 907 | /* Delete channel. |
1da177e4 LT |
908 | * Must be called on the locked socket. */ |
909 | static void sco_chan_del(struct sock *sk, int err) | |
910 | { | |
911 | struct sco_conn *conn; | |
912 | ||
913 | conn = sco_pi(sk)->conn; | |
914 | ||
915 | BT_DBG("sk %p, conn %p, err %d", sk, conn, err); | |
916 | ||
0b27a4b9 GP |
917 | if (conn) { |
918 | sco_conn_lock(conn); | |
919 | conn->sk = NULL; | |
920 | sco_pi(sk)->conn = NULL; | |
921 | sco_conn_unlock(conn); | |
922 | ||
923 | if (conn->hcon) | |
76a68ba0 | 924 | hci_conn_drop(conn->hcon); |
0b27a4b9 GP |
925 | } |
926 | ||
1da177e4 LT |
927 | sk->sk_state = BT_CLOSED; |
928 | sk->sk_err = err; | |
929 | sk->sk_state_change(sk); | |
930 | ||
931 | sock_set_flag(sk, SOCK_ZAPPED); | |
932 | } | |
933 | ||
934 | static void sco_conn_ready(struct sco_conn *conn) | |
935 | { | |
735cbc47 AE |
936 | struct sock *parent; |
937 | struct sock *sk = conn->sk; | |
1da177e4 LT |
938 | |
939 | BT_DBG("conn %p", conn); | |
940 | ||
735cbc47 | 941 | if (sk) { |
1da177e4 LT |
942 | sco_sock_clear_timer(sk); |
943 | bh_lock_sock(sk); | |
944 | sk->sk_state = BT_CONNECTED; | |
945 | sk->sk_state_change(sk); | |
946 | bh_unlock_sock(sk); | |
947 | } else { | |
40528088 AG |
948 | sco_conn_lock(conn); |
949 | ||
1da177e4 | 950 | parent = sco_get_sock_listen(conn->src); |
40528088 AG |
951 | if (!parent) { |
952 | sco_conn_unlock(conn); | |
953 | return; | |
954 | } | |
1da177e4 LT |
955 | |
956 | bh_lock_sock(parent); | |
957 | ||
b9dbdbc1 | 958 | sk = sco_sock_alloc(sock_net(parent), NULL, |
be7c2b99 | 959 | BTPROTO_SCO, GFP_ATOMIC); |
1da177e4 LT |
960 | if (!sk) { |
961 | bh_unlock_sock(parent); | |
40528088 AG |
962 | sco_conn_unlock(conn); |
963 | return; | |
1da177e4 LT |
964 | } |
965 | ||
966 | sco_sock_init(sk, parent); | |
967 | ||
968 | bacpy(&bt_sk(sk)->src, conn->src); | |
969 | bacpy(&bt_sk(sk)->dst, conn->dst); | |
970 | ||
971 | hci_conn_hold(conn->hcon); | |
972 | __sco_chan_add(conn, sk, parent); | |
973 | ||
20714bfe FD |
974 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
975 | sk->sk_state = BT_CONNECT2; | |
976 | else | |
977 | sk->sk_state = BT_CONNECTED; | |
1da177e4 LT |
978 | |
979 | /* Wake up parent */ | |
980 | parent->sk_data_ready(parent, 1); | |
981 | ||
982 | bh_unlock_sock(parent); | |
1da177e4 | 983 | |
40528088 AG |
984 | sco_conn_unlock(conn); |
985 | } | |
1da177e4 LT |
986 | } |
987 | ||
988 | /* ----- SCO interface with lower layer (HCI) ----- */ | |
20714bfe | 989 | int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4 | 990 | { |
fc5fef61 | 991 | struct sock *sk; |
71aeeaa1 MH |
992 | int lm = 0; |
993 | ||
6ed93dc6 | 994 | BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4 | 995 | |
71aeeaa1 MH |
996 | /* Find listening sockets */ |
997 | read_lock(&sco_sk_list.lock); | |
b67bfe0d | 998 | sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1 MH |
999 | if (sk->sk_state != BT_LISTEN) |
1000 | continue; | |
1001 | ||
1002 | if (!bacmp(&bt_sk(sk)->src, &hdev->bdaddr) || | |
be7c2b99 | 1003 | !bacmp(&bt_sk(sk)->src, BDADDR_ANY)) { |
71aeeaa1 | 1004 | lm |= HCI_LM_ACCEPT; |
20714bfe FD |
1005 | |
1006 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) | |
1007 | *flags |= HCI_PROTO_DEFER; | |
71aeeaa1 MH |
1008 | break; |
1009 | } | |
1010 | } | |
1011 | read_unlock(&sco_sk_list.lock); | |
1012 | ||
1013 | return lm; | |
1da177e4 LT |
1014 | } |
1015 | ||
9e664631 | 1016 | void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4 | 1017 | { |
6ed93dc6 | 1018 | BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status); |
1da177e4 LT |
1019 | if (!status) { |
1020 | struct sco_conn *conn; | |
1021 | ||
519e42b3 | 1022 | conn = sco_conn_add(hcon); |
1da177e4 LT |
1023 | if (conn) |
1024 | sco_conn_ready(conn); | |
8e87d142 | 1025 | } else |
e175072f | 1026 | sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4 LT |
1027 | } |
1028 | ||
9e664631 | 1029 | void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4 LT |
1030 | { |
1031 | BT_DBG("hcon %p reason %d", hcon, reason); | |
1032 | ||
e175072f | 1033 | sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4 LT |
1034 | } |
1035 | ||
686ebf28 | 1036 | int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4 LT |
1037 | { |
1038 | struct sco_conn *conn = hcon->sco_data; | |
1039 | ||
1040 | if (!conn) | |
1041 | goto drop; | |
1042 | ||
1043 | BT_DBG("conn %p len %d", conn, skb->len); | |
1044 | ||
1045 | if (skb->len) { | |
1046 | sco_recv_frame(conn, skb); | |
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | drop: | |
8e87d142 | 1051 | kfree_skb(skb); |
1da177e4 LT |
1052 | return 0; |
1053 | } | |
1054 | ||
aef7d97c | 1055 | static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1056 | { |
1057 | struct sock *sk; | |
1da177e4 | 1058 | |
ee65d19e | 1059 | read_lock(&sco_sk_list.lock); |
1da177e4 | 1060 | |
b67bfe0d | 1061 | sk_for_each(sk, &sco_sk_list.head) { |
fcb73338 AE |
1062 | seq_printf(f, "%pMR %pMR %d\n", &bt_sk(sk)->src, |
1063 | &bt_sk(sk)->dst, sk->sk_state); | |
be9d1227 | 1064 | } |
1da177e4 | 1065 | |
ee65d19e | 1066 | read_unlock(&sco_sk_list.lock); |
1da177e4 | 1067 | |
aef7d97c | 1068 | return 0; |
1da177e4 LT |
1069 | } |
1070 | ||
aef7d97c MH |
1071 | static int sco_debugfs_open(struct inode *inode, struct file *file) |
1072 | { | |
1073 | return single_open(file, sco_debugfs_show, inode->i_private); | |
1074 | } | |
1075 | ||
1076 | static const struct file_operations sco_debugfs_fops = { | |
1077 | .open = sco_debugfs_open, | |
1078 | .read = seq_read, | |
1079 | .llseek = seq_lseek, | |
1080 | .release = single_release, | |
1081 | }; | |
1082 | ||
1083 | static struct dentry *sco_debugfs; | |
1da177e4 | 1084 | |
90ddc4f0 | 1085 | static const struct proto_ops sco_sock_ops = { |
1da177e4 LT |
1086 | .family = PF_BLUETOOTH, |
1087 | .owner = THIS_MODULE, | |
1088 | .release = sco_sock_release, | |
1089 | .bind = sco_sock_bind, | |
1090 | .connect = sco_sock_connect, | |
1091 | .listen = sco_sock_listen, | |
1092 | .accept = sco_sock_accept, | |
1093 | .getname = sco_sock_getname, | |
1094 | .sendmsg = sco_sock_sendmsg, | |
20714bfe | 1095 | .recvmsg = sco_sock_recvmsg, |
1da177e4 | 1096 | .poll = bt_sock_poll, |
3241ad82 | 1097 | .ioctl = bt_sock_ioctl, |
1da177e4 LT |
1098 | .mmap = sock_no_mmap, |
1099 | .socketpair = sock_no_socketpair, | |
fd0b3ff7 | 1100 | .shutdown = sco_sock_shutdown, |
1da177e4 LT |
1101 | .setsockopt = sco_sock_setsockopt, |
1102 | .getsockopt = sco_sock_getsockopt | |
1103 | }; | |
1104 | ||
ec1b4cf7 | 1105 | static const struct net_proto_family sco_sock_family_ops = { |
1da177e4 LT |
1106 | .family = PF_BLUETOOTH, |
1107 | .owner = THIS_MODULE, | |
1108 | .create = sco_sock_create, | |
1109 | }; | |
1110 | ||
64274518 | 1111 | int __init sco_init(void) |
1da177e4 LT |
1112 | { |
1113 | int err; | |
1114 | ||
1115 | err = proto_register(&sco_proto, 0); | |
1116 | if (err < 0) | |
1117 | return err; | |
1118 | ||
1119 | err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); | |
1120 | if (err < 0) { | |
1121 | BT_ERR("SCO socket registration failed"); | |
1122 | goto error; | |
1123 | } | |
1124 | ||
b0316615 | 1125 | err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212 MY |
1126 | if (err < 0) { |
1127 | BT_ERR("Failed to create SCO proc file"); | |
1128 | bt_sock_unregister(BTPROTO_SCO); | |
1129 | goto error; | |
1130 | } | |
1131 | ||
aef7d97c | 1132 | if (bt_debugfs) { |
be7c2b99 GP |
1133 | sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, |
1134 | NULL, &sco_debugfs_fops); | |
aef7d97c MH |
1135 | if (!sco_debugfs) |
1136 | BT_ERR("Failed to create SCO debug file"); | |
1137 | } | |
1da177e4 | 1138 | |
1da177e4 LT |
1139 | BT_INFO("SCO socket layer initialized"); |
1140 | ||
1141 | return 0; | |
1142 | ||
1143 | error: | |
1144 | proto_unregister(&sco_proto); | |
1145 | return err; | |
1146 | } | |
1147 | ||
64274518 | 1148 | void __exit sco_exit(void) |
1da177e4 | 1149 | { |
de9b9212 MY |
1150 | bt_procfs_cleanup(&init_net, "sco"); |
1151 | ||
aef7d97c | 1152 | debugfs_remove(sco_debugfs); |
1da177e4 | 1153 | |
5e9d7f86 | 1154 | bt_sock_unregister(BTPROTO_SCO); |
1da177e4 | 1155 | |
1da177e4 LT |
1156 | proto_unregister(&sco_proto); |
1157 | } | |
1158 | ||
7cb127d5 MH |
1159 | module_param(disable_esco, bool, 0644); |
1160 | MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |