Commit | Line | Data |
---|---|---|
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 | ||
fc8f525a MH |
43 | /* ---- SCO connections ---- */ |
44 | struct sco_conn { | |
45 | struct hci_conn *hcon; | |
46 | ||
47 | spinlock_t lock; | |
48 | struct sock *sk; | |
49 | ||
50 | unsigned int mtu; | |
51 | }; | |
52 | ||
53 | #define sco_conn_lock(c) spin_lock(&c->lock); | |
54 | #define sco_conn_unlock(c) spin_unlock(&c->lock); | |
55 | ||
1da177e4 LT |
56 | static void sco_sock_close(struct sock *sk); |
57 | static void sco_sock_kill(struct sock *sk); | |
58 | ||
2a0dccb3 MH |
59 | /* ----- SCO socket info ----- */ |
60 | #define sco_pi(sk) ((struct sco_pinfo *) sk) | |
61 | ||
62 | struct sco_pinfo { | |
63 | struct bt_sock bt; | |
64 | bdaddr_t src; | |
65 | bdaddr_t dst; | |
66 | __u32 flags; | |
67 | __u16 setting; | |
68 | struct sco_conn *conn; | |
69 | }; | |
70 | ||
1da177e4 | 71 | /* ---- SCO timers ---- */ |
068d69e5 MH |
72 | #define SCO_CONN_TIMEOUT (HZ * 40) |
73 | #define SCO_DISCONN_TIMEOUT (HZ * 2) | |
74 | ||
1da177e4 LT |
75 | static void sco_sock_timeout(unsigned long arg) |
76 | { | |
77 | struct sock *sk = (struct sock *) arg; | |
78 | ||
79 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
80 | ||
81 | bh_lock_sock(sk); | |
82 | sk->sk_err = ETIMEDOUT; | |
83 | sk->sk_state_change(sk); | |
84 | bh_unlock_sock(sk); | |
85 | ||
86 | sco_sock_kill(sk); | |
87 | sock_put(sk); | |
88 | } | |
89 | ||
90 | static void sco_sock_set_timer(struct sock *sk, long timeout) | |
91 | { | |
92 | BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout); | |
93 | sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout); | |
94 | } | |
95 | ||
96 | static void sco_sock_clear_timer(struct sock *sk) | |
97 | { | |
98 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
99 | sk_stop_timer(sk, &sk->sk_timer); | |
100 | } | |
101 | ||
1da177e4 | 102 | /* ---- SCO connections ---- */ |
519e42b3 | 103 | static struct sco_conn *sco_conn_add(struct hci_conn *hcon) |
1da177e4 LT |
104 | { |
105 | struct hci_dev *hdev = hcon->hdev; | |
25ea6db0 | 106 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 | 107 | |
519e42b3 | 108 | if (conn) |
1da177e4 LT |
109 | return conn; |
110 | ||
c10cc5a9 | 111 | conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL); |
25ea6db0 | 112 | if (!conn) |
1da177e4 | 113 | return NULL; |
1da177e4 LT |
114 | |
115 | spin_lock_init(&conn->lock); | |
116 | ||
117 | hcon->sco_data = conn; | |
118 | conn->hcon = hcon; | |
119 | ||
1da177e4 LT |
120 | if (hdev->sco_mtu > 0) |
121 | conn->mtu = hdev->sco_mtu; | |
122 | else | |
123 | conn->mtu = 60; | |
124 | ||
125 | BT_DBG("hcon %p conn %p", hcon, conn); | |
25ea6db0 | 126 | |
1da177e4 LT |
127 | return conn; |
128 | } | |
129 | ||
e03ab519 MH |
130 | /* Delete channel. |
131 | * Must be called on the locked socket. */ | |
132 | static void sco_chan_del(struct sock *sk, int err) | |
133 | { | |
134 | struct sco_conn *conn; | |
135 | ||
136 | conn = sco_pi(sk)->conn; | |
137 | ||
138 | BT_DBG("sk %p, conn %p, err %d", sk, conn, err); | |
139 | ||
140 | if (conn) { | |
141 | sco_conn_lock(conn); | |
142 | conn->sk = NULL; | |
143 | sco_pi(sk)->conn = NULL; | |
144 | sco_conn_unlock(conn); | |
145 | ||
146 | if (conn->hcon) | |
147 | hci_conn_drop(conn->hcon); | |
148 | } | |
149 | ||
150 | sk->sk_state = BT_CLOSED; | |
151 | sk->sk_err = err; | |
152 | sk->sk_state_change(sk); | |
153 | ||
154 | sock_set_flag(sk, SOCK_ZAPPED); | |
155 | } | |
156 | ||
1da177e4 LT |
157 | static int sco_conn_del(struct hci_conn *hcon, int err) |
158 | { | |
735cbc47 | 159 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 LT |
160 | struct sock *sk; |
161 | ||
735cbc47 | 162 | if (!conn) |
1da177e4 LT |
163 | return 0; |
164 | ||
165 | BT_DBG("hcon %p conn %p, err %d", hcon, conn, err); | |
166 | ||
167 | /* Kill socket */ | |
eb5a4de8 MH |
168 | sco_conn_lock(conn); |
169 | sk = conn->sk; | |
170 | sco_conn_unlock(conn); | |
171 | ||
735cbc47 | 172 | if (sk) { |
1da177e4 LT |
173 | bh_lock_sock(sk); |
174 | sco_sock_clear_timer(sk); | |
175 | sco_chan_del(sk, err); | |
176 | bh_unlock_sock(sk); | |
177 | sco_sock_kill(sk); | |
178 | } | |
179 | ||
180 | hcon->sco_data = NULL; | |
181 | kfree(conn); | |
182 | return 0; | |
183 | } | |
184 | ||
015b01cb MH |
185 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent) |
186 | { | |
187 | BT_DBG("conn %p", conn); | |
188 | ||
189 | sco_pi(sk)->conn = conn; | |
190 | conn->sk = sk; | |
191 | ||
192 | if (parent) | |
193 | bt_accept_enqueue(parent, sk); | |
194 | } | |
195 | ||
6039aa73 GP |
196 | static int sco_chan_add(struct sco_conn *conn, struct sock *sk, |
197 | struct sock *parent) | |
1da177e4 LT |
198 | { |
199 | int err = 0; | |
200 | ||
201 | sco_conn_lock(conn); | |
b9dbdbc1 | 202 | if (conn->sk) |
1da177e4 | 203 | err = -EBUSY; |
b9dbdbc1 | 204 | else |
1da177e4 | 205 | __sco_chan_add(conn, sk, parent); |
b9dbdbc1 | 206 | |
1da177e4 LT |
207 | sco_conn_unlock(conn); |
208 | return err; | |
209 | } | |
210 | ||
211 | static int sco_connect(struct sock *sk) | |
212 | { | |
1da177e4 LT |
213 | struct sco_conn *conn; |
214 | struct hci_conn *hcon; | |
215 | struct hci_dev *hdev; | |
b6a0dc82 | 216 | int err, type; |
1da177e4 | 217 | |
eea96364 | 218 | BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst); |
1da177e4 | 219 | |
eea96364 | 220 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src); |
735cbc47 | 221 | if (!hdev) |
1da177e4 LT |
222 | return -EHOSTUNREACH; |
223 | ||
09fd0de5 | 224 | hci_dev_lock(hdev); |
1da177e4 | 225 | |
7cb127d5 MH |
226 | if (lmp_esco_capable(hdev) && !disable_esco) |
227 | type = ESCO_LINK; | |
228 | else | |
229 | type = SCO_LINK; | |
b6a0dc82 | 230 | |
79dc0087 FD |
231 | if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT && |
232 | (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) { | |
233 | err = -EOPNOTSUPP; | |
234 | goto done; | |
235 | } | |
236 | ||
eea96364 | 237 | hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst, |
041987cf | 238 | sco_pi(sk)->setting); |
30e76272 VT |
239 | if (IS_ERR(hcon)) { |
240 | err = PTR_ERR(hcon); | |
1da177e4 | 241 | goto done; |
30e76272 | 242 | } |
1da177e4 | 243 | |
519e42b3 | 244 | conn = sco_conn_add(hcon); |
1da177e4 | 245 | if (!conn) { |
76a68ba0 | 246 | hci_conn_drop(hcon); |
30e76272 | 247 | err = -ENOMEM; |
1da177e4 LT |
248 | goto done; |
249 | } | |
250 | ||
251 | /* Update source addr of the socket */ | |
eea96364 | 252 | bacpy(&sco_pi(sk)->src, &hcon->src); |
1da177e4 LT |
253 | |
254 | err = sco_chan_add(conn, sk, NULL); | |
255 | if (err) | |
256 | goto done; | |
257 | ||
258 | if (hcon->state == BT_CONNECTED) { | |
259 | sco_sock_clear_timer(sk); | |
260 | sk->sk_state = BT_CONNECTED; | |
261 | } else { | |
262 | sk->sk_state = BT_CONNECT; | |
263 | sco_sock_set_timer(sk, sk->sk_sndtimeo); | |
264 | } | |
b6a0dc82 | 265 | |
1da177e4 | 266 | done: |
09fd0de5 | 267 | hci_dev_unlock(hdev); |
1da177e4 LT |
268 | hci_dev_put(hdev); |
269 | return err; | |
270 | } | |
271 | ||
6039aa73 | 272 | static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len) |
1da177e4 LT |
273 | { |
274 | struct sco_conn *conn = sco_pi(sk)->conn; | |
275 | struct sk_buff *skb; | |
088ce088 | 276 | int err; |
1da177e4 LT |
277 | |
278 | /* Check outgoing MTU */ | |
279 | if (len > conn->mtu) | |
280 | return -EINVAL; | |
281 | ||
282 | BT_DBG("sk %p len %d", sk, len); | |
283 | ||
088ce088 | 284 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
b9dbdbc1 | 285 | if (!skb) |
1da177e4 LT |
286 | return err; |
287 | ||
6ce8e9ce | 288 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
b9dbdbc1 GP |
289 | kfree_skb(skb); |
290 | return -EFAULT; | |
1da177e4 LT |
291 | } |
292 | ||
0d861d8b | 293 | hci_send_sco(conn->hcon, skb); |
1da177e4 | 294 | |
088ce088 | 295 | return len; |
1da177e4 LT |
296 | } |
297 | ||
6039aa73 | 298 | static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb) |
1da177e4 | 299 | { |
eb5a4de8 MH |
300 | struct sock *sk; |
301 | ||
302 | sco_conn_lock(conn); | |
303 | sk = conn->sk; | |
304 | sco_conn_unlock(conn); | |
1da177e4 LT |
305 | |
306 | if (!sk) | |
307 | goto drop; | |
308 | ||
309 | BT_DBG("sk %p len %d", sk, skb->len); | |
310 | ||
311 | if (sk->sk_state != BT_CONNECTED) | |
312 | goto drop; | |
313 | ||
314 | if (!sock_queue_rcv_skb(sk, skb)) | |
315 | return; | |
316 | ||
317 | drop: | |
318 | kfree_skb(skb); | |
1da177e4 LT |
319 | } |
320 | ||
321 | /* -------- Socket interface ---------- */ | |
fb334059 | 322 | static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba) |
1da177e4 | 323 | { |
fb334059 MH |
324 | struct sock *sk; |
325 | ||
b67bfe0d | 326 | sk_for_each(sk, &sco_sk_list.head) { |
fb334059 MH |
327 | if (sk->sk_state != BT_LISTEN) |
328 | continue; | |
1da177e4 | 329 | |
eea96364 | 330 | if (!bacmp(&sco_pi(sk)->src, ba)) |
fb334059 MH |
331 | return sk; |
332 | } | |
333 | ||
334 | return NULL; | |
1da177e4 LT |
335 | } |
336 | ||
337 | /* Find socket listening on source bdaddr. | |
338 | * Returns closest match. | |
339 | */ | |
340 | static struct sock *sco_get_sock_listen(bdaddr_t *src) | |
341 | { | |
342 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 LT |
343 | |
344 | read_lock(&sco_sk_list.lock); | |
345 | ||
b67bfe0d | 346 | sk_for_each(sk, &sco_sk_list.head) { |
1da177e4 LT |
347 | if (sk->sk_state != BT_LISTEN) |
348 | continue; | |
349 | ||
350 | /* Exact match. */ | |
eea96364 | 351 | if (!bacmp(&sco_pi(sk)->src, src)) |
1da177e4 LT |
352 | break; |
353 | ||
354 | /* Closest match */ | |
eea96364 | 355 | if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY)) |
1da177e4 LT |
356 | sk1 = sk; |
357 | } | |
358 | ||
359 | read_unlock(&sco_sk_list.lock); | |
360 | ||
b67bfe0d | 361 | return sk ? sk : sk1; |
1da177e4 LT |
362 | } |
363 | ||
364 | static void sco_sock_destruct(struct sock *sk) | |
365 | { | |
366 | BT_DBG("sk %p", sk); | |
367 | ||
368 | skb_queue_purge(&sk->sk_receive_queue); | |
369 | skb_queue_purge(&sk->sk_write_queue); | |
370 | } | |
371 | ||
372 | static void sco_sock_cleanup_listen(struct sock *parent) | |
373 | { | |
374 | struct sock *sk; | |
375 | ||
376 | BT_DBG("parent %p", parent); | |
377 | ||
378 | /* Close not yet accepted channels */ | |
379 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
380 | sco_sock_close(sk); | |
381 | sco_sock_kill(sk); | |
382 | } | |
383 | ||
384 | parent->sk_state = BT_CLOSED; | |
385 | sock_set_flag(parent, SOCK_ZAPPED); | |
386 | } | |
387 | ||
388 | /* Kill socket (only if zapped and orphan) | |
389 | * Must be called on unlocked socket. | |
390 | */ | |
391 | static void sco_sock_kill(struct sock *sk) | |
392 | { | |
393 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
394 | return; | |
395 | ||
396 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
397 | ||
398 | /* Kill poor orphan */ | |
399 | bt_sock_unlink(&sco_sk_list, sk); | |
400 | sock_set_flag(sk, SOCK_DEAD); | |
401 | sock_put(sk); | |
402 | } | |
403 | ||
fd0b3ff7 | 404 | static void __sco_sock_close(struct sock *sk) |
1da177e4 | 405 | { |
fd0b3ff7 | 406 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
1da177e4 LT |
407 | |
408 | switch (sk->sk_state) { | |
409 | case BT_LISTEN: | |
410 | sco_sock_cleanup_listen(sk); | |
411 | break; | |
412 | ||
413 | case BT_CONNECTED: | |
414 | case BT_CONFIG: | |
b7e98b51 | 415 | if (sco_pi(sk)->conn->hcon) { |
4a77708b LAD |
416 | sk->sk_state = BT_DISCONN; |
417 | sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); | |
76a68ba0 | 418 | hci_conn_drop(sco_pi(sk)->conn->hcon); |
4a77708b LAD |
419 | sco_pi(sk)->conn->hcon = NULL; |
420 | } else | |
421 | sco_chan_del(sk, ECONNRESET); | |
422 | break; | |
423 | ||
eb20ff9c | 424 | case BT_CONNECT2: |
1da177e4 LT |
425 | case BT_CONNECT: |
426 | case BT_DISCONN: | |
427 | sco_chan_del(sk, ECONNRESET); | |
428 | break; | |
429 | ||
430 | default: | |
431 | sock_set_flag(sk, SOCK_ZAPPED); | |
432 | break; | |
3ff50b79 | 433 | } |
fd0b3ff7 | 434 | } |
1da177e4 | 435 | |
fd0b3ff7 MH |
436 | /* Must be called on unlocked socket. */ |
437 | static void sco_sock_close(struct sock *sk) | |
438 | { | |
439 | sco_sock_clear_timer(sk); | |
440 | lock_sock(sk); | |
441 | __sco_sock_close(sk); | |
1da177e4 | 442 | release_sock(sk); |
1da177e4 LT |
443 | sco_sock_kill(sk); |
444 | } | |
445 | ||
446 | static void sco_sock_init(struct sock *sk, struct sock *parent) | |
447 | { | |
448 | BT_DBG("sk %p", sk); | |
449 | ||
6230c9b4 | 450 | if (parent) { |
1da177e4 | 451 | sk->sk_type = parent->sk_type; |
20714bfe | 452 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
6230c9b4 PM |
453 | security_sk_clone(parent, sk); |
454 | } | |
1da177e4 LT |
455 | } |
456 | ||
457 | static struct proto sco_proto = { | |
458 | .name = "SCO", | |
459 | .owner = THIS_MODULE, | |
460 | .obj_size = sizeof(struct sco_pinfo) | |
461 | }; | |
462 | ||
1b8d7ae4 | 463 | static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
1da177e4 LT |
464 | { |
465 | struct sock *sk; | |
466 | ||
6257ff21 | 467 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto); |
1da177e4 LT |
468 | if (!sk) |
469 | return NULL; | |
470 | ||
471 | sock_init_data(sock, sk); | |
472 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
473 | ||
474 | sk->sk_destruct = sco_sock_destruct; | |
475 | sk->sk_sndtimeo = SCO_CONN_TIMEOUT; | |
476 | ||
477 | sock_reset_flag(sk, SOCK_ZAPPED); | |
478 | ||
479 | sk->sk_protocol = proto; | |
480 | sk->sk_state = BT_OPEN; | |
481 | ||
ad10b1a4 FD |
482 | sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
483 | ||
b24b8a24 | 484 | setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk); |
1da177e4 LT |
485 | |
486 | bt_sock_link(&sco_sk_list, sk); | |
487 | return sk; | |
488 | } | |
489 | ||
3f378b68 EP |
490 | static int sco_sock_create(struct net *net, struct socket *sock, int protocol, |
491 | int kern) | |
1da177e4 LT |
492 | { |
493 | struct sock *sk; | |
494 | ||
495 | BT_DBG("sock %p", sock); | |
496 | ||
497 | sock->state = SS_UNCONNECTED; | |
498 | ||
499 | if (sock->type != SOCK_SEQPACKET) | |
500 | return -ESOCKTNOSUPPORT; | |
501 | ||
502 | sock->ops = &sco_sock_ops; | |
503 | ||
1b8d7ae4 | 504 | sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC); |
74da626a | 505 | if (!sk) |
1da177e4 LT |
506 | return -ENOMEM; |
507 | ||
508 | sco_sock_init(sk, NULL); | |
509 | return 0; | |
510 | } | |
511 | ||
512 | static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
513 | { | |
514 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
515 | struct sock *sk = sock->sk; | |
1da177e4 LT |
516 | int err = 0; |
517 | ||
6ed93dc6 | 518 | BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
1da177e4 LT |
519 | |
520 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
521 | return -EINVAL; | |
522 | ||
523 | lock_sock(sk); | |
524 | ||
525 | if (sk->sk_state != BT_OPEN) { | |
526 | err = -EBADFD; | |
527 | goto done; | |
528 | } | |
529 | ||
8ed21f7e MH |
530 | if (sk->sk_type != SOCK_SEQPACKET) { |
531 | err = -EINVAL; | |
532 | goto done; | |
1da177e4 LT |
533 | } |
534 | ||
eea96364 | 535 | bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
8ed21f7e MH |
536 | |
537 | sk->sk_state = BT_BOUND; | |
1da177e4 LT |
538 | |
539 | done: | |
540 | release_sock(sk); | |
541 | return err; | |
542 | } | |
543 | ||
544 | static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
545 | { | |
546 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
547 | struct sock *sk = sock->sk; | |
92f185c8 | 548 | int err; |
1da177e4 LT |
549 | |
550 | BT_DBG("sk %p", sk); | |
551 | ||
6503d961 CG |
552 | if (alen < sizeof(struct sockaddr_sco) || |
553 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
554 | return -EINVAL; |
555 | ||
556 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) | |
557 | return -EBADFD; | |
558 | ||
559 | if (sk->sk_type != SOCK_SEQPACKET) | |
560 | return -EINVAL; | |
561 | ||
562 | lock_sock(sk); | |
563 | ||
564 | /* Set destination address and psm */ | |
eea96364 | 565 | bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
1da177e4 | 566 | |
735cbc47 AE |
567 | err = sco_connect(sk); |
568 | if (err) | |
1da177e4 LT |
569 | goto done; |
570 | ||
8e87d142 | 571 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99 | 572 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4 LT |
573 | |
574 | done: | |
575 | release_sock(sk); | |
576 | return err; | |
577 | } | |
578 | ||
579 | static int sco_sock_listen(struct socket *sock, int backlog) | |
580 | { | |
581 | struct sock *sk = sock->sk; | |
eea96364 | 582 | bdaddr_t *src = &sco_pi(sk)->src; |
1da177e4 LT |
583 | int err = 0; |
584 | ||
585 | BT_DBG("sk %p backlog %d", sk, backlog); | |
586 | ||
587 | lock_sock(sk); | |
588 | ||
7d5d775a | 589 | if (sk->sk_state != BT_BOUND) { |
1da177e4 LT |
590 | err = -EBADFD; |
591 | goto done; | |
592 | } | |
593 | ||
7d5d775a MH |
594 | if (sk->sk_type != SOCK_SEQPACKET) { |
595 | err = -EINVAL; | |
596 | goto done; | |
597 | } | |
598 | ||
fb334059 MH |
599 | write_lock(&sco_sk_list.lock); |
600 | ||
601 | if (__sco_get_sock_listen_by_addr(src)) { | |
602 | err = -EADDRINUSE; | |
603 | goto unlock; | |
604 | } | |
605 | ||
1da177e4 LT |
606 | sk->sk_max_ack_backlog = backlog; |
607 | sk->sk_ack_backlog = 0; | |
fb334059 | 608 | |
1da177e4 LT |
609 | sk->sk_state = BT_LISTEN; |
610 | ||
fb334059 MH |
611 | unlock: |
612 | write_unlock(&sco_sk_list.lock); | |
613 | ||
1da177e4 LT |
614 | done: |
615 | release_sock(sk); | |
616 | return err; | |
617 | } | |
618 | ||
619 | static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flags) | |
620 | { | |
dfb2fae7 | 621 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4 LT |
622 | struct sock *sk = sock->sk, *ch; |
623 | long timeo; | |
624 | int err = 0; | |
625 | ||
626 | lock_sock(sk); | |
627 | ||
1da177e4 LT |
628 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
629 | ||
630 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
631 | ||
632 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 633 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3c | 634 | while (1) { |
552b0d3c PH |
635 | if (sk->sk_state != BT_LISTEN) { |
636 | err = -EBADFD; | |
1da177e4 LT |
637 | break; |
638 | } | |
639 | ||
552b0d3c PH |
640 | ch = bt_accept_dequeue(sk, newsock); |
641 | if (ch) | |
642 | break; | |
1da177e4 | 643 | |
552b0d3c PH |
644 | if (!timeo) { |
645 | err = -EAGAIN; | |
1da177e4 LT |
646 | break; |
647 | } | |
648 | ||
649 | if (signal_pending(current)) { | |
650 | err = sock_intr_errno(timeo); | |
651 | break; | |
652 | } | |
552b0d3c PH |
653 | |
654 | release_sock(sk); | |
dfb2fae7 PH |
655 | |
656 | timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); | |
552b0d3c | 657 | lock_sock(sk); |
1da177e4 | 658 | } |
aa395145 | 659 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
660 | |
661 | if (err) | |
662 | goto done; | |
663 | ||
664 | newsock->state = SS_CONNECTED; | |
665 | ||
666 | BT_DBG("new socket %p", ch); | |
667 | ||
668 | done: | |
669 | release_sock(sk); | |
670 | return err; | |
671 | } | |
672 | ||
673 | static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) | |
674 | { | |
675 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
676 | struct sock *sk = sock->sk; | |
677 | ||
678 | BT_DBG("sock %p, sk %p", sock, sk); | |
679 | ||
680 | addr->sa_family = AF_BLUETOOTH; | |
681 | *len = sizeof(struct sockaddr_sco); | |
682 | ||
683 | if (peer) | |
eea96364 | 684 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
1da177e4 | 685 | else |
eea96364 | 686 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
1da177e4 LT |
687 | |
688 | return 0; | |
689 | } | |
690 | ||
1b784140 YX |
691 | static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
692 | size_t len) | |
1da177e4 LT |
693 | { |
694 | struct sock *sk = sock->sk; | |
b9dbdbc1 | 695 | int err; |
1da177e4 LT |
696 | |
697 | BT_DBG("sock %p, sk %p", sock, sk); | |
698 | ||
c1cbe4b7 BL |
699 | err = sock_error(sk); |
700 | if (err) | |
701 | return err; | |
1da177e4 LT |
702 | |
703 | if (msg->msg_flags & MSG_OOB) | |
704 | return -EOPNOTSUPP; | |
705 | ||
706 | lock_sock(sk); | |
707 | ||
708 | if (sk->sk_state == BT_CONNECTED) | |
709 | err = sco_send_frame(sk, msg, len); | |
710 | else | |
711 | err = -ENOTCONN; | |
712 | ||
713 | release_sock(sk); | |
714 | return err; | |
715 | } | |
716 | ||
2f69a82a | 717 | static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
fa5513be FD |
718 | { |
719 | struct hci_dev *hdev = conn->hdev; | |
720 | ||
721 | BT_DBG("conn %p", conn); | |
722 | ||
723 | conn->state = BT_CONFIG; | |
724 | ||
725 | if (!lmp_esco_capable(hdev)) { | |
726 | struct hci_cp_accept_conn_req cp; | |
727 | ||
728 | bacpy(&cp.bdaddr, &conn->dst); | |
33f24048 | 729 | cp.role = 0x00; /* Ignored */ |
fa5513be FD |
730 | |
731 | hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); | |
732 | } else { | |
733 | struct hci_cp_accept_sync_conn_req cp; | |
734 | ||
735 | bacpy(&cp.bdaddr, &conn->dst); | |
736 | cp.pkt_type = cpu_to_le16(conn->pkt_type); | |
737 | ||
dcf4adbf JP |
738 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
739 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
2f69a82a FD |
740 | cp.content_format = cpu_to_le16(setting); |
741 | ||
742 | switch (setting & SCO_AIRMODE_MASK) { | |
743 | case SCO_AIRMODE_TRANSP: | |
744 | if (conn->pkt_type & ESCO_2EV3) | |
dcf4adbf | 745 | cp.max_latency = cpu_to_le16(0x0008); |
2f69a82a | 746 | else |
dcf4adbf | 747 | cp.max_latency = cpu_to_le16(0x000D); |
2f69a82a FD |
748 | cp.retrans_effort = 0x02; |
749 | break; | |
750 | case SCO_AIRMODE_CVSD: | |
dcf4adbf | 751 | cp.max_latency = cpu_to_le16(0xffff); |
2f69a82a FD |
752 | cp.retrans_effort = 0xff; |
753 | break; | |
754 | } | |
fa5513be FD |
755 | |
756 | hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, | |
757 | sizeof(cp), &cp); | |
758 | } | |
759 | } | |
760 | ||
1b784140 YX |
761 | static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
762 | size_t len, int flags) | |
20714bfe FD |
763 | { |
764 | struct sock *sk = sock->sk; | |
765 | struct sco_pinfo *pi = sco_pi(sk); | |
766 | ||
767 | lock_sock(sk); | |
768 | ||
769 | if (sk->sk_state == BT_CONNECT2 && | |
770 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { | |
2f69a82a | 771 | sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
20714bfe FD |
772 | sk->sk_state = BT_CONFIG; |
773 | ||
774 | release_sock(sk); | |
775 | return 0; | |
776 | } | |
777 | ||
778 | release_sock(sk); | |
779 | ||
1b784140 | 780 | return bt_sock_recvmsg(sock, msg, len, flags); |
20714bfe FD |
781 | } |
782 | ||
b7058842 | 783 | static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
1da177e4 LT |
784 | { |
785 | struct sock *sk = sock->sk; | |
ad10b1a4 FD |
786 | int len, err = 0; |
787 | struct bt_voice voice; | |
b96e9c67 | 788 | u32 opt; |
1da177e4 LT |
789 | |
790 | BT_DBG("sk %p", sk); | |
791 | ||
792 | lock_sock(sk); | |
793 | ||
794 | switch (optname) { | |
b96e9c67 FD |
795 | |
796 | case BT_DEFER_SETUP: | |
797 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
798 | err = -EINVAL; | |
799 | break; | |
800 | } | |
801 | ||
802 | if (get_user(opt, (u32 __user *) optval)) { | |
803 | err = -EFAULT; | |
804 | break; | |
805 | } | |
806 | ||
807 | if (opt) | |
808 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
809 | else | |
810 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
811 | break; | |
812 | ||
ad10b1a4 FD |
813 | case BT_VOICE: |
814 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
815 | sk->sk_state != BT_CONNECT2) { | |
816 | err = -EINVAL; | |
817 | break; | |
818 | } | |
819 | ||
820 | voice.setting = sco_pi(sk)->setting; | |
821 | ||
822 | len = min_t(unsigned int, sizeof(voice), optlen); | |
823 | if (copy_from_user((char *) &voice, optval, len)) { | |
824 | err = -EFAULT; | |
825 | break; | |
826 | } | |
827 | ||
828 | /* Explicitly check for these values */ | |
829 | if (voice.setting != BT_VOICE_TRANSPARENT && | |
830 | voice.setting != BT_VOICE_CVSD_16BIT) { | |
831 | err = -EINVAL; | |
832 | break; | |
833 | } | |
834 | ||
835 | sco_pi(sk)->setting = voice.setting; | |
836 | break; | |
837 | ||
1da177e4 LT |
838 | default: |
839 | err = -ENOPROTOOPT; | |
840 | break; | |
841 | } | |
842 | ||
843 | release_sock(sk); | |
844 | return err; | |
845 | } | |
846 | ||
d58daf42 | 847 | static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
1da177e4 LT |
848 | { |
849 | struct sock *sk = sock->sk; | |
850 | struct sco_options opts; | |
851 | struct sco_conninfo cinfo; | |
8e87d142 | 852 | int len, err = 0; |
1da177e4 LT |
853 | |
854 | BT_DBG("sk %p", sk); | |
855 | ||
856 | if (get_user(len, optlen)) | |
857 | return -EFAULT; | |
858 | ||
859 | lock_sock(sk); | |
860 | ||
861 | switch (optname) { | |
862 | case SCO_OPTIONS: | |
9d225d22 JH |
863 | if (sk->sk_state != BT_CONNECTED && |
864 | !(sk->sk_state == BT_CONNECT2 && | |
865 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
866 | err = -ENOTCONN; |
867 | break; | |
868 | } | |
869 | ||
870 | opts.mtu = sco_pi(sk)->conn->mtu; | |
871 | ||
872 | BT_DBG("mtu %d", opts.mtu); | |
873 | ||
874 | len = min_t(unsigned int, len, sizeof(opts)); | |
875 | if (copy_to_user(optval, (char *)&opts, len)) | |
876 | err = -EFAULT; | |
877 | ||
878 | break; | |
879 | ||
880 | case SCO_CONNINFO: | |
9d225d22 JH |
881 | if (sk->sk_state != BT_CONNECTED && |
882 | !(sk->sk_state == BT_CONNECT2 && | |
883 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
884 | err = -ENOTCONN; |
885 | break; | |
886 | } | |
887 | ||
c4c896e1 | 888 | memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4 LT |
889 | cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; |
890 | memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); | |
891 | ||
892 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
893 | if (copy_to_user(optval, (char *)&cinfo, len)) | |
894 | err = -EFAULT; | |
895 | ||
896 | break; | |
897 | ||
898 | default: | |
899 | err = -ENOPROTOOPT; | |
900 | break; | |
901 | } | |
902 | ||
903 | release_sock(sk); | |
904 | return err; | |
905 | } | |
906 | ||
d58daf42 MH |
907 | static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) |
908 | { | |
909 | struct sock *sk = sock->sk; | |
910 | int len, err = 0; | |
ad10b1a4 | 911 | struct bt_voice voice; |
d58daf42 MH |
912 | |
913 | BT_DBG("sk %p", sk); | |
914 | ||
915 | if (level == SOL_SCO) | |
916 | return sco_sock_getsockopt_old(sock, optname, optval, optlen); | |
917 | ||
918 | if (get_user(len, optlen)) | |
919 | return -EFAULT; | |
920 | ||
921 | lock_sock(sk); | |
922 | ||
923 | switch (optname) { | |
b96e9c67 FD |
924 | |
925 | case BT_DEFER_SETUP: | |
926 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
927 | err = -EINVAL; | |
928 | break; | |
929 | } | |
930 | ||
931 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), | |
932 | (u32 __user *) optval)) | |
933 | err = -EFAULT; | |
934 | ||
935 | break; | |
936 | ||
ad10b1a4 FD |
937 | case BT_VOICE: |
938 | voice.setting = sco_pi(sk)->setting; | |
939 | ||
940 | len = min_t(unsigned int, len, sizeof(voice)); | |
941 | if (copy_to_user(optval, (char *)&voice, len)) | |
942 | err = -EFAULT; | |
943 | ||
944 | break; | |
945 | ||
d58daf42 MH |
946 | default: |
947 | err = -ENOPROTOOPT; | |
948 | break; | |
949 | } | |
950 | ||
951 | release_sock(sk); | |
952 | return err; | |
953 | } | |
954 | ||
fd0b3ff7 MH |
955 | static int sco_sock_shutdown(struct socket *sock, int how) |
956 | { | |
957 | struct sock *sk = sock->sk; | |
958 | int err = 0; | |
959 | ||
960 | BT_DBG("sock %p, sk %p", sock, sk); | |
961 | ||
962 | if (!sk) | |
963 | return 0; | |
964 | ||
965 | lock_sock(sk); | |
966 | if (!sk->sk_shutdown) { | |
967 | sk->sk_shutdown = SHUTDOWN_MASK; | |
968 | sco_sock_clear_timer(sk); | |
969 | __sco_sock_close(sk); | |
970 | ||
093facf3 VD |
971 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
972 | !(current->flags & PF_EXITING)) | |
fd0b3ff7 | 973 | err = bt_sock_wait_state(sk, BT_CLOSED, |
be7c2b99 | 974 | sk->sk_lingertime); |
fd0b3ff7 MH |
975 | } |
976 | release_sock(sk); | |
977 | return err; | |
978 | } | |
979 | ||
1da177e4 LT |
980 | static int sco_sock_release(struct socket *sock) |
981 | { | |
982 | struct sock *sk = sock->sk; | |
983 | int err = 0; | |
984 | ||
985 | BT_DBG("sock %p, sk %p", sock, sk); | |
986 | ||
987 | if (!sk) | |
988 | return 0; | |
989 | ||
990 | sco_sock_close(sk); | |
991 | ||
093facf3 VD |
992 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
993 | !(current->flags & PF_EXITING)) { | |
1da177e4 LT |
994 | lock_sock(sk); |
995 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
996 | release_sock(sk); | |
997 | } | |
998 | ||
999 | sock_orphan(sk); | |
1000 | sco_sock_kill(sk); | |
1001 | return err; | |
1002 | } | |
1003 | ||
1da177e4 LT |
1004 | static void sco_conn_ready(struct sco_conn *conn) |
1005 | { | |
735cbc47 AE |
1006 | struct sock *parent; |
1007 | struct sock *sk = conn->sk; | |
1da177e4 LT |
1008 | |
1009 | BT_DBG("conn %p", conn); | |
1010 | ||
735cbc47 | 1011 | if (sk) { |
1da177e4 LT |
1012 | sco_sock_clear_timer(sk); |
1013 | bh_lock_sock(sk); | |
1014 | sk->sk_state = BT_CONNECTED; | |
1015 | sk->sk_state_change(sk); | |
1016 | bh_unlock_sock(sk); | |
1017 | } else { | |
40528088 AG |
1018 | sco_conn_lock(conn); |
1019 | ||
041987cf | 1020 | parent = sco_get_sock_listen(&conn->hcon->src); |
40528088 AG |
1021 | if (!parent) { |
1022 | sco_conn_unlock(conn); | |
1023 | return; | |
1024 | } | |
1da177e4 LT |
1025 | |
1026 | bh_lock_sock(parent); | |
1027 | ||
b9dbdbc1 | 1028 | sk = sco_sock_alloc(sock_net(parent), NULL, |
be7c2b99 | 1029 | BTPROTO_SCO, GFP_ATOMIC); |
1da177e4 LT |
1030 | if (!sk) { |
1031 | bh_unlock_sock(parent); | |
40528088 AG |
1032 | sco_conn_unlock(conn); |
1033 | return; | |
1da177e4 LT |
1034 | } |
1035 | ||
1036 | sco_sock_init(sk, parent); | |
1037 | ||
eea96364 MH |
1038 | bacpy(&sco_pi(sk)->src, &conn->hcon->src); |
1039 | bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); | |
1da177e4 LT |
1040 | |
1041 | hci_conn_hold(conn->hcon); | |
1042 | __sco_chan_add(conn, sk, parent); | |
1043 | ||
20714bfe FD |
1044 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
1045 | sk->sk_state = BT_CONNECT2; | |
1046 | else | |
1047 | sk->sk_state = BT_CONNECTED; | |
1da177e4 LT |
1048 | |
1049 | /* Wake up parent */ | |
676d2369 | 1050 | parent->sk_data_ready(parent); |
1da177e4 LT |
1051 | |
1052 | bh_unlock_sock(parent); | |
1da177e4 | 1053 | |
40528088 AG |
1054 | sco_conn_unlock(conn); |
1055 | } | |
1da177e4 LT |
1056 | } |
1057 | ||
1058 | /* ----- SCO interface with lower layer (HCI) ----- */ | |
20714bfe | 1059 | int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4 | 1060 | { |
fc5fef61 | 1061 | struct sock *sk; |
71aeeaa1 MH |
1062 | int lm = 0; |
1063 | ||
6ed93dc6 | 1064 | BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4 | 1065 | |
71aeeaa1 MH |
1066 | /* Find listening sockets */ |
1067 | read_lock(&sco_sk_list.lock); | |
b67bfe0d | 1068 | sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1 MH |
1069 | if (sk->sk_state != BT_LISTEN) |
1070 | continue; | |
1071 | ||
eea96364 MH |
1072 | if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || |
1073 | !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { | |
71aeeaa1 | 1074 | lm |= HCI_LM_ACCEPT; |
20714bfe FD |
1075 | |
1076 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) | |
1077 | *flags |= HCI_PROTO_DEFER; | |
71aeeaa1 MH |
1078 | break; |
1079 | } | |
1080 | } | |
1081 | read_unlock(&sco_sk_list.lock); | |
1082 | ||
1083 | return lm; | |
1da177e4 LT |
1084 | } |
1085 | ||
539c496d | 1086 | static void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4 | 1087 | { |
539c496d JH |
1088 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1089 | return; | |
1090 | ||
6ed93dc6 | 1091 | BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status); |
539c496d | 1092 | |
1da177e4 LT |
1093 | if (!status) { |
1094 | struct sco_conn *conn; | |
1095 | ||
519e42b3 | 1096 | conn = sco_conn_add(hcon); |
1da177e4 LT |
1097 | if (conn) |
1098 | sco_conn_ready(conn); | |
8e87d142 | 1099 | } else |
e175072f | 1100 | sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4 LT |
1101 | } |
1102 | ||
3a6d576b | 1103 | static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4 | 1104 | { |
3a6d576b JH |
1105 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1106 | return; | |
1107 | ||
1da177e4 LT |
1108 | BT_DBG("hcon %p reason %d", hcon, reason); |
1109 | ||
e175072f | 1110 | sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4 LT |
1111 | } |
1112 | ||
686ebf28 | 1113 | int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4 LT |
1114 | { |
1115 | struct sco_conn *conn = hcon->sco_data; | |
1116 | ||
1117 | if (!conn) | |
1118 | goto drop; | |
1119 | ||
1120 | BT_DBG("conn %p len %d", conn, skb->len); | |
1121 | ||
1122 | if (skb->len) { | |
1123 | sco_recv_frame(conn, skb); | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | drop: | |
8e87d142 | 1128 | kfree_skb(skb); |
1da177e4 LT |
1129 | return 0; |
1130 | } | |
1131 | ||
539c496d JH |
1132 | static struct hci_cb sco_cb = { |
1133 | .name = "SCO", | |
1134 | .connect_cfm = sco_connect_cfm, | |
3a6d576b | 1135 | .disconn_cfm = sco_disconn_cfm, |
539c496d JH |
1136 | }; |
1137 | ||
aef7d97c | 1138 | static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1139 | { |
1140 | struct sock *sk; | |
1da177e4 | 1141 | |
ee65d19e | 1142 | read_lock(&sco_sk_list.lock); |
1da177e4 | 1143 | |
b67bfe0d | 1144 | sk_for_each(sk, &sco_sk_list.head) { |
eea96364 MH |
1145 | seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src, |
1146 | &sco_pi(sk)->dst, sk->sk_state); | |
be9d1227 | 1147 | } |
1da177e4 | 1148 | |
ee65d19e | 1149 | read_unlock(&sco_sk_list.lock); |
1da177e4 | 1150 | |
aef7d97c | 1151 | return 0; |
1da177e4 LT |
1152 | } |
1153 | ||
aef7d97c MH |
1154 | static int sco_debugfs_open(struct inode *inode, struct file *file) |
1155 | { | |
1156 | return single_open(file, sco_debugfs_show, inode->i_private); | |
1157 | } | |
1158 | ||
1159 | static const struct file_operations sco_debugfs_fops = { | |
1160 | .open = sco_debugfs_open, | |
1161 | .read = seq_read, | |
1162 | .llseek = seq_lseek, | |
1163 | .release = single_release, | |
1164 | }; | |
1165 | ||
1166 | static struct dentry *sco_debugfs; | |
1da177e4 | 1167 | |
90ddc4f0 | 1168 | static const struct proto_ops sco_sock_ops = { |
1da177e4 LT |
1169 | .family = PF_BLUETOOTH, |
1170 | .owner = THIS_MODULE, | |
1171 | .release = sco_sock_release, | |
1172 | .bind = sco_sock_bind, | |
1173 | .connect = sco_sock_connect, | |
1174 | .listen = sco_sock_listen, | |
1175 | .accept = sco_sock_accept, | |
1176 | .getname = sco_sock_getname, | |
1177 | .sendmsg = sco_sock_sendmsg, | |
20714bfe | 1178 | .recvmsg = sco_sock_recvmsg, |
1da177e4 | 1179 | .poll = bt_sock_poll, |
3241ad82 | 1180 | .ioctl = bt_sock_ioctl, |
1da177e4 LT |
1181 | .mmap = sock_no_mmap, |
1182 | .socketpair = sock_no_socketpair, | |
fd0b3ff7 | 1183 | .shutdown = sco_sock_shutdown, |
1da177e4 LT |
1184 | .setsockopt = sco_sock_setsockopt, |
1185 | .getsockopt = sco_sock_getsockopt | |
1186 | }; | |
1187 | ||
ec1b4cf7 | 1188 | static const struct net_proto_family sco_sock_family_ops = { |
1da177e4 LT |
1189 | .family = PF_BLUETOOTH, |
1190 | .owner = THIS_MODULE, | |
1191 | .create = sco_sock_create, | |
1192 | }; | |
1193 | ||
64274518 | 1194 | int __init sco_init(void) |
1da177e4 LT |
1195 | { |
1196 | int err; | |
1197 | ||
15762fa7 MH |
1198 | BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr)); |
1199 | ||
1da177e4 LT |
1200 | err = proto_register(&sco_proto, 0); |
1201 | if (err < 0) | |
1202 | return err; | |
1203 | ||
1204 | err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); | |
1205 | if (err < 0) { | |
1206 | BT_ERR("SCO socket registration failed"); | |
1207 | goto error; | |
1208 | } | |
1209 | ||
b0316615 | 1210 | err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212 MY |
1211 | if (err < 0) { |
1212 | BT_ERR("Failed to create SCO proc file"); | |
1213 | bt_sock_unregister(BTPROTO_SCO); | |
1214 | goto error; | |
1215 | } | |
1216 | ||
1da177e4 LT |
1217 | BT_INFO("SCO socket layer initialized"); |
1218 | ||
539c496d JH |
1219 | hci_register_cb(&sco_cb); |
1220 | ||
1120e4bf MH |
1221 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1222 | return 0; | |
1223 | ||
1224 | sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, | |
1225 | NULL, &sco_debugfs_fops); | |
1226 | ||
1da177e4 LT |
1227 | return 0; |
1228 | ||
1229 | error: | |
1230 | proto_unregister(&sco_proto); | |
1231 | return err; | |
1232 | } | |
1233 | ||
0402d9f2 | 1234 | void sco_exit(void) |
1da177e4 | 1235 | { |
de9b9212 MY |
1236 | bt_procfs_cleanup(&init_net, "sco"); |
1237 | ||
aef7d97c | 1238 | debugfs_remove(sco_debugfs); |
1da177e4 | 1239 | |
539c496d JH |
1240 | hci_unregister_cb(&sco_cb); |
1241 | ||
5e9d7f86 | 1242 | bt_sock_unregister(BTPROTO_SCO); |
1da177e4 | 1243 | |
1da177e4 LT |
1244 | proto_unregister(&sco_proto); |
1245 | } | |
1246 | ||
7cb127d5 MH |
1247 | module_param(disable_esco, bool, 0644); |
1248 | MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |