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 | ||
df945360 | 157 | static void sco_conn_del(struct hci_conn *hcon, int err) |
1da177e4 | 158 | { |
735cbc47 | 159 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 LT |
160 | struct sock *sk; |
161 | ||
735cbc47 | 162 | if (!conn) |
df945360 | 163 | return; |
1da177e4 LT |
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); | |
1da177e4 LT |
182 | } |
183 | ||
015b01cb MH |
184 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent) |
185 | { | |
186 | BT_DBG("conn %p", conn); | |
187 | ||
188 | sco_pi(sk)->conn = conn; | |
189 | conn->sk = sk; | |
190 | ||
191 | if (parent) | |
192 | bt_accept_enqueue(parent, sk); | |
193 | } | |
194 | ||
6039aa73 GP |
195 | static int sco_chan_add(struct sco_conn *conn, struct sock *sk, |
196 | struct sock *parent) | |
1da177e4 LT |
197 | { |
198 | int err = 0; | |
199 | ||
200 | sco_conn_lock(conn); | |
b9dbdbc1 | 201 | if (conn->sk) |
1da177e4 | 202 | err = -EBUSY; |
b9dbdbc1 | 203 | else |
1da177e4 | 204 | __sco_chan_add(conn, sk, parent); |
b9dbdbc1 | 205 | |
1da177e4 LT |
206 | sco_conn_unlock(conn); |
207 | return err; | |
208 | } | |
209 | ||
210 | static int sco_connect(struct sock *sk) | |
211 | { | |
1da177e4 LT |
212 | struct sco_conn *conn; |
213 | struct hci_conn *hcon; | |
214 | struct hci_dev *hdev; | |
b6a0dc82 | 215 | int err, type; |
1da177e4 | 216 | |
eea96364 | 217 | BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst); |
1da177e4 | 218 | |
eea96364 | 219 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src); |
735cbc47 | 220 | if (!hdev) |
1da177e4 LT |
221 | return -EHOSTUNREACH; |
222 | ||
09fd0de5 | 223 | hci_dev_lock(hdev); |
1da177e4 | 224 | |
7cb127d5 MH |
225 | if (lmp_esco_capable(hdev) && !disable_esco) |
226 | type = ESCO_LINK; | |
227 | else | |
228 | type = SCO_LINK; | |
b6a0dc82 | 229 | |
79dc0087 FD |
230 | if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT && |
231 | (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) { | |
232 | err = -EOPNOTSUPP; | |
233 | goto done; | |
234 | } | |
235 | ||
eea96364 | 236 | hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst, |
041987cf | 237 | sco_pi(sk)->setting); |
30e76272 VT |
238 | if (IS_ERR(hcon)) { |
239 | err = PTR_ERR(hcon); | |
1da177e4 | 240 | goto done; |
30e76272 | 241 | } |
1da177e4 | 242 | |
519e42b3 | 243 | conn = sco_conn_add(hcon); |
1da177e4 | 244 | if (!conn) { |
76a68ba0 | 245 | hci_conn_drop(hcon); |
30e76272 | 246 | err = -ENOMEM; |
1da177e4 LT |
247 | goto done; |
248 | } | |
249 | ||
250 | /* Update source addr of the socket */ | |
eea96364 | 251 | bacpy(&sco_pi(sk)->src, &hcon->src); |
1da177e4 LT |
252 | |
253 | err = sco_chan_add(conn, sk, NULL); | |
254 | if (err) | |
255 | goto done; | |
256 | ||
257 | if (hcon->state == BT_CONNECTED) { | |
258 | sco_sock_clear_timer(sk); | |
259 | sk->sk_state = BT_CONNECTED; | |
260 | } else { | |
261 | sk->sk_state = BT_CONNECT; | |
262 | sco_sock_set_timer(sk, sk->sk_sndtimeo); | |
263 | } | |
b6a0dc82 | 264 | |
1da177e4 | 265 | done: |
09fd0de5 | 266 | hci_dev_unlock(hdev); |
1da177e4 LT |
267 | hci_dev_put(hdev); |
268 | return err; | |
269 | } | |
270 | ||
6039aa73 | 271 | static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len) |
1da177e4 LT |
272 | { |
273 | struct sco_conn *conn = sco_pi(sk)->conn; | |
274 | struct sk_buff *skb; | |
088ce088 | 275 | int err; |
1da177e4 LT |
276 | |
277 | /* Check outgoing MTU */ | |
278 | if (len > conn->mtu) | |
279 | return -EINVAL; | |
280 | ||
281 | BT_DBG("sk %p len %d", sk, len); | |
282 | ||
088ce088 | 283 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
b9dbdbc1 | 284 | if (!skb) |
1da177e4 LT |
285 | return err; |
286 | ||
6ce8e9ce | 287 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
b9dbdbc1 GP |
288 | kfree_skb(skb); |
289 | return -EFAULT; | |
1da177e4 LT |
290 | } |
291 | ||
0d861d8b | 292 | hci_send_sco(conn->hcon, skb); |
1da177e4 | 293 | |
088ce088 | 294 | return len; |
1da177e4 LT |
295 | } |
296 | ||
6039aa73 | 297 | static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb) |
1da177e4 | 298 | { |
eb5a4de8 MH |
299 | struct sock *sk; |
300 | ||
301 | sco_conn_lock(conn); | |
302 | sk = conn->sk; | |
303 | sco_conn_unlock(conn); | |
1da177e4 LT |
304 | |
305 | if (!sk) | |
306 | goto drop; | |
307 | ||
308 | BT_DBG("sk %p len %d", sk, skb->len); | |
309 | ||
310 | if (sk->sk_state != BT_CONNECTED) | |
311 | goto drop; | |
312 | ||
313 | if (!sock_queue_rcv_skb(sk, skb)) | |
314 | return; | |
315 | ||
316 | drop: | |
317 | kfree_skb(skb); | |
1da177e4 LT |
318 | } |
319 | ||
320 | /* -------- Socket interface ---------- */ | |
fb334059 | 321 | static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba) |
1da177e4 | 322 | { |
fb334059 MH |
323 | struct sock *sk; |
324 | ||
b67bfe0d | 325 | sk_for_each(sk, &sco_sk_list.head) { |
fb334059 MH |
326 | if (sk->sk_state != BT_LISTEN) |
327 | continue; | |
1da177e4 | 328 | |
eea96364 | 329 | if (!bacmp(&sco_pi(sk)->src, ba)) |
fb334059 MH |
330 | return sk; |
331 | } | |
332 | ||
333 | return NULL; | |
1da177e4 LT |
334 | } |
335 | ||
336 | /* Find socket listening on source bdaddr. | |
337 | * Returns closest match. | |
338 | */ | |
339 | static struct sock *sco_get_sock_listen(bdaddr_t *src) | |
340 | { | |
341 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 LT |
342 | |
343 | read_lock(&sco_sk_list.lock); | |
344 | ||
b67bfe0d | 345 | sk_for_each(sk, &sco_sk_list.head) { |
1da177e4 LT |
346 | if (sk->sk_state != BT_LISTEN) |
347 | continue; | |
348 | ||
349 | /* Exact match. */ | |
eea96364 | 350 | if (!bacmp(&sco_pi(sk)->src, src)) |
1da177e4 LT |
351 | break; |
352 | ||
353 | /* Closest match */ | |
eea96364 | 354 | if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY)) |
1da177e4 LT |
355 | sk1 = sk; |
356 | } | |
357 | ||
358 | read_unlock(&sco_sk_list.lock); | |
359 | ||
b67bfe0d | 360 | return sk ? sk : sk1; |
1da177e4 LT |
361 | } |
362 | ||
363 | static void sco_sock_destruct(struct sock *sk) | |
364 | { | |
365 | BT_DBG("sk %p", sk); | |
366 | ||
367 | skb_queue_purge(&sk->sk_receive_queue); | |
368 | skb_queue_purge(&sk->sk_write_queue); | |
369 | } | |
370 | ||
371 | static void sco_sock_cleanup_listen(struct sock *parent) | |
372 | { | |
373 | struct sock *sk; | |
374 | ||
375 | BT_DBG("parent %p", parent); | |
376 | ||
377 | /* Close not yet accepted channels */ | |
378 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
379 | sco_sock_close(sk); | |
380 | sco_sock_kill(sk); | |
381 | } | |
382 | ||
383 | parent->sk_state = BT_CLOSED; | |
384 | sock_set_flag(parent, SOCK_ZAPPED); | |
385 | } | |
386 | ||
387 | /* Kill socket (only if zapped and orphan) | |
388 | * Must be called on unlocked socket. | |
389 | */ | |
390 | static void sco_sock_kill(struct sock *sk) | |
391 | { | |
392 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
393 | return; | |
394 | ||
395 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
396 | ||
397 | /* Kill poor orphan */ | |
398 | bt_sock_unlink(&sco_sk_list, sk); | |
399 | sock_set_flag(sk, SOCK_DEAD); | |
400 | sock_put(sk); | |
401 | } | |
402 | ||
fd0b3ff7 | 403 | static void __sco_sock_close(struct sock *sk) |
1da177e4 | 404 | { |
fd0b3ff7 | 405 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
1da177e4 LT |
406 | |
407 | switch (sk->sk_state) { | |
408 | case BT_LISTEN: | |
409 | sco_sock_cleanup_listen(sk); | |
410 | break; | |
411 | ||
412 | case BT_CONNECTED: | |
413 | case BT_CONFIG: | |
b7e98b51 | 414 | if (sco_pi(sk)->conn->hcon) { |
4a77708b LAD |
415 | sk->sk_state = BT_DISCONN; |
416 | sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); | |
76a68ba0 | 417 | hci_conn_drop(sco_pi(sk)->conn->hcon); |
4a77708b LAD |
418 | sco_pi(sk)->conn->hcon = NULL; |
419 | } else | |
420 | sco_chan_del(sk, ECONNRESET); | |
421 | break; | |
422 | ||
eb20ff9c | 423 | case BT_CONNECT2: |
1da177e4 LT |
424 | case BT_CONNECT: |
425 | case BT_DISCONN: | |
426 | sco_chan_del(sk, ECONNRESET); | |
427 | break; | |
428 | ||
429 | default: | |
430 | sock_set_flag(sk, SOCK_ZAPPED); | |
431 | break; | |
3ff50b79 | 432 | } |
fd0b3ff7 | 433 | } |
1da177e4 | 434 | |
fd0b3ff7 MH |
435 | /* Must be called on unlocked socket. */ |
436 | static void sco_sock_close(struct sock *sk) | |
437 | { | |
438 | sco_sock_clear_timer(sk); | |
439 | lock_sock(sk); | |
440 | __sco_sock_close(sk); | |
1da177e4 | 441 | release_sock(sk); |
1da177e4 LT |
442 | sco_sock_kill(sk); |
443 | } | |
444 | ||
445 | static void sco_sock_init(struct sock *sk, struct sock *parent) | |
446 | { | |
447 | BT_DBG("sk %p", sk); | |
448 | ||
6230c9b4 | 449 | if (parent) { |
1da177e4 | 450 | sk->sk_type = parent->sk_type; |
20714bfe | 451 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
6230c9b4 PM |
452 | security_sk_clone(parent, sk); |
453 | } | |
1da177e4 LT |
454 | } |
455 | ||
456 | static struct proto sco_proto = { | |
457 | .name = "SCO", | |
458 | .owner = THIS_MODULE, | |
459 | .obj_size = sizeof(struct sco_pinfo) | |
460 | }; | |
461 | ||
11aa9c28 | 462 | static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio, int kern) |
1da177e4 LT |
463 | { |
464 | struct sock *sk; | |
465 | ||
11aa9c28 | 466 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern); |
1da177e4 LT |
467 | if (!sk) |
468 | return NULL; | |
469 | ||
470 | sock_init_data(sock, sk); | |
471 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
472 | ||
473 | sk->sk_destruct = sco_sock_destruct; | |
474 | sk->sk_sndtimeo = SCO_CONN_TIMEOUT; | |
475 | ||
476 | sock_reset_flag(sk, SOCK_ZAPPED); | |
477 | ||
478 | sk->sk_protocol = proto; | |
479 | sk->sk_state = BT_OPEN; | |
480 | ||
ad10b1a4 FD |
481 | sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
482 | ||
b24b8a24 | 483 | setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk); |
1da177e4 LT |
484 | |
485 | bt_sock_link(&sco_sk_list, sk); | |
486 | return sk; | |
487 | } | |
488 | ||
3f378b68 EP |
489 | static int sco_sock_create(struct net *net, struct socket *sock, int protocol, |
490 | int kern) | |
1da177e4 LT |
491 | { |
492 | struct sock *sk; | |
493 | ||
494 | BT_DBG("sock %p", sock); | |
495 | ||
496 | sock->state = SS_UNCONNECTED; | |
497 | ||
498 | if (sock->type != SOCK_SEQPACKET) | |
499 | return -ESOCKTNOSUPPORT; | |
500 | ||
501 | sock->ops = &sco_sock_ops; | |
502 | ||
11aa9c28 | 503 | sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); |
74da626a | 504 | if (!sk) |
1da177e4 LT |
505 | return -ENOMEM; |
506 | ||
507 | sco_sock_init(sk, NULL); | |
508 | return 0; | |
509 | } | |
510 | ||
511 | static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
512 | { | |
513 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
514 | struct sock *sk = sock->sk; | |
1da177e4 LT |
515 | int err = 0; |
516 | ||
6ed93dc6 | 517 | BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
1da177e4 LT |
518 | |
519 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
520 | return -EINVAL; | |
521 | ||
522 | lock_sock(sk); | |
523 | ||
524 | if (sk->sk_state != BT_OPEN) { | |
525 | err = -EBADFD; | |
526 | goto done; | |
527 | } | |
528 | ||
8ed21f7e MH |
529 | if (sk->sk_type != SOCK_SEQPACKET) { |
530 | err = -EINVAL; | |
531 | goto done; | |
1da177e4 LT |
532 | } |
533 | ||
eea96364 | 534 | bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
8ed21f7e MH |
535 | |
536 | sk->sk_state = BT_BOUND; | |
1da177e4 LT |
537 | |
538 | done: | |
539 | release_sock(sk); | |
540 | return err; | |
541 | } | |
542 | ||
543 | static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
544 | { | |
545 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
546 | struct sock *sk = sock->sk; | |
92f185c8 | 547 | int err; |
1da177e4 LT |
548 | |
549 | BT_DBG("sk %p", sk); | |
550 | ||
6503d961 CG |
551 | if (alen < sizeof(struct sockaddr_sco) || |
552 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
553 | return -EINVAL; |
554 | ||
555 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) | |
556 | return -EBADFD; | |
557 | ||
558 | if (sk->sk_type != SOCK_SEQPACKET) | |
559 | return -EINVAL; | |
560 | ||
561 | lock_sock(sk); | |
562 | ||
563 | /* Set destination address and psm */ | |
eea96364 | 564 | bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
1da177e4 | 565 | |
735cbc47 AE |
566 | err = sco_connect(sk); |
567 | if (err) | |
1da177e4 LT |
568 | goto done; |
569 | ||
8e87d142 | 570 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99 | 571 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4 LT |
572 | |
573 | done: | |
574 | release_sock(sk); | |
575 | return err; | |
576 | } | |
577 | ||
578 | static int sco_sock_listen(struct socket *sock, int backlog) | |
579 | { | |
580 | struct sock *sk = sock->sk; | |
eea96364 | 581 | bdaddr_t *src = &sco_pi(sk)->src; |
1da177e4 LT |
582 | int err = 0; |
583 | ||
584 | BT_DBG("sk %p backlog %d", sk, backlog); | |
585 | ||
586 | lock_sock(sk); | |
587 | ||
7d5d775a | 588 | if (sk->sk_state != BT_BOUND) { |
1da177e4 LT |
589 | err = -EBADFD; |
590 | goto done; | |
591 | } | |
592 | ||
7d5d775a MH |
593 | if (sk->sk_type != SOCK_SEQPACKET) { |
594 | err = -EINVAL; | |
595 | goto done; | |
596 | } | |
597 | ||
fb334059 MH |
598 | write_lock(&sco_sk_list.lock); |
599 | ||
600 | if (__sco_get_sock_listen_by_addr(src)) { | |
601 | err = -EADDRINUSE; | |
602 | goto unlock; | |
603 | } | |
604 | ||
1da177e4 LT |
605 | sk->sk_max_ack_backlog = backlog; |
606 | sk->sk_ack_backlog = 0; | |
fb334059 | 607 | |
1da177e4 LT |
608 | sk->sk_state = BT_LISTEN; |
609 | ||
fb334059 MH |
610 | unlock: |
611 | write_unlock(&sco_sk_list.lock); | |
612 | ||
1da177e4 LT |
613 | done: |
614 | release_sock(sk); | |
615 | return err; | |
616 | } | |
617 | ||
618 | static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flags) | |
619 | { | |
dfb2fae7 | 620 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4 LT |
621 | struct sock *sk = sock->sk, *ch; |
622 | long timeo; | |
623 | int err = 0; | |
624 | ||
625 | lock_sock(sk); | |
626 | ||
1da177e4 LT |
627 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
628 | ||
629 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
630 | ||
631 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 632 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3c | 633 | while (1) { |
552b0d3c PH |
634 | if (sk->sk_state != BT_LISTEN) { |
635 | err = -EBADFD; | |
1da177e4 LT |
636 | break; |
637 | } | |
638 | ||
552b0d3c PH |
639 | ch = bt_accept_dequeue(sk, newsock); |
640 | if (ch) | |
641 | break; | |
1da177e4 | 642 | |
552b0d3c PH |
643 | if (!timeo) { |
644 | err = -EAGAIN; | |
1da177e4 LT |
645 | break; |
646 | } | |
647 | ||
648 | if (signal_pending(current)) { | |
649 | err = sock_intr_errno(timeo); | |
650 | break; | |
651 | } | |
552b0d3c PH |
652 | |
653 | release_sock(sk); | |
dfb2fae7 PH |
654 | |
655 | timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); | |
552b0d3c | 656 | lock_sock(sk); |
1da177e4 | 657 | } |
aa395145 | 658 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
659 | |
660 | if (err) | |
661 | goto done; | |
662 | ||
663 | newsock->state = SS_CONNECTED; | |
664 | ||
665 | BT_DBG("new socket %p", ch); | |
666 | ||
667 | done: | |
668 | release_sock(sk); | |
669 | return err; | |
670 | } | |
671 | ||
672 | static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) | |
673 | { | |
674 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
675 | struct sock *sk = sock->sk; | |
676 | ||
677 | BT_DBG("sock %p, sk %p", sock, sk); | |
678 | ||
679 | addr->sa_family = AF_BLUETOOTH; | |
680 | *len = sizeof(struct sockaddr_sco); | |
681 | ||
682 | if (peer) | |
eea96364 | 683 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
1da177e4 | 684 | else |
eea96364 | 685 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
1da177e4 LT |
686 | |
687 | return 0; | |
688 | } | |
689 | ||
1b784140 YX |
690 | static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
691 | size_t len) | |
1da177e4 LT |
692 | { |
693 | struct sock *sk = sock->sk; | |
b9dbdbc1 | 694 | int err; |
1da177e4 LT |
695 | |
696 | BT_DBG("sock %p, sk %p", sock, sk); | |
697 | ||
c1cbe4b7 BL |
698 | err = sock_error(sk); |
699 | if (err) | |
700 | return err; | |
1da177e4 LT |
701 | |
702 | if (msg->msg_flags & MSG_OOB) | |
703 | return -EOPNOTSUPP; | |
704 | ||
705 | lock_sock(sk); | |
706 | ||
707 | if (sk->sk_state == BT_CONNECTED) | |
708 | err = sco_send_frame(sk, msg, len); | |
709 | else | |
710 | err = -ENOTCONN; | |
711 | ||
712 | release_sock(sk); | |
713 | return err; | |
714 | } | |
715 | ||
2f69a82a | 716 | static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
fa5513be FD |
717 | { |
718 | struct hci_dev *hdev = conn->hdev; | |
719 | ||
720 | BT_DBG("conn %p", conn); | |
721 | ||
722 | conn->state = BT_CONFIG; | |
723 | ||
724 | if (!lmp_esco_capable(hdev)) { | |
725 | struct hci_cp_accept_conn_req cp; | |
726 | ||
727 | bacpy(&cp.bdaddr, &conn->dst); | |
33f24048 | 728 | cp.role = 0x00; /* Ignored */ |
fa5513be FD |
729 | |
730 | hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); | |
731 | } else { | |
732 | struct hci_cp_accept_sync_conn_req cp; | |
733 | ||
734 | bacpy(&cp.bdaddr, &conn->dst); | |
735 | cp.pkt_type = cpu_to_le16(conn->pkt_type); | |
736 | ||
dcf4adbf JP |
737 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
738 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
2f69a82a FD |
739 | cp.content_format = cpu_to_le16(setting); |
740 | ||
741 | switch (setting & SCO_AIRMODE_MASK) { | |
742 | case SCO_AIRMODE_TRANSP: | |
743 | if (conn->pkt_type & ESCO_2EV3) | |
dcf4adbf | 744 | cp.max_latency = cpu_to_le16(0x0008); |
2f69a82a | 745 | else |
dcf4adbf | 746 | cp.max_latency = cpu_to_le16(0x000D); |
2f69a82a FD |
747 | cp.retrans_effort = 0x02; |
748 | break; | |
749 | case SCO_AIRMODE_CVSD: | |
dcf4adbf | 750 | cp.max_latency = cpu_to_le16(0xffff); |
2f69a82a FD |
751 | cp.retrans_effort = 0xff; |
752 | break; | |
753 | } | |
fa5513be FD |
754 | |
755 | hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, | |
756 | sizeof(cp), &cp); | |
757 | } | |
758 | } | |
759 | ||
1b784140 YX |
760 | static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
761 | size_t len, int flags) | |
20714bfe FD |
762 | { |
763 | struct sock *sk = sock->sk; | |
764 | struct sco_pinfo *pi = sco_pi(sk); | |
765 | ||
766 | lock_sock(sk); | |
767 | ||
768 | if (sk->sk_state == BT_CONNECT2 && | |
769 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { | |
2f69a82a | 770 | sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
20714bfe FD |
771 | sk->sk_state = BT_CONFIG; |
772 | ||
773 | release_sock(sk); | |
774 | return 0; | |
775 | } | |
776 | ||
777 | release_sock(sk); | |
778 | ||
1b784140 | 779 | return bt_sock_recvmsg(sock, msg, len, flags); |
20714bfe FD |
780 | } |
781 | ||
b7058842 | 782 | static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
1da177e4 LT |
783 | { |
784 | struct sock *sk = sock->sk; | |
ad10b1a4 FD |
785 | int len, err = 0; |
786 | struct bt_voice voice; | |
b96e9c67 | 787 | u32 opt; |
1da177e4 LT |
788 | |
789 | BT_DBG("sk %p", sk); | |
790 | ||
791 | lock_sock(sk); | |
792 | ||
793 | switch (optname) { | |
b96e9c67 FD |
794 | |
795 | case BT_DEFER_SETUP: | |
796 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
797 | err = -EINVAL; | |
798 | break; | |
799 | } | |
800 | ||
801 | if (get_user(opt, (u32 __user *) optval)) { | |
802 | err = -EFAULT; | |
803 | break; | |
804 | } | |
805 | ||
806 | if (opt) | |
807 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
808 | else | |
809 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
810 | break; | |
811 | ||
ad10b1a4 FD |
812 | case BT_VOICE: |
813 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
814 | sk->sk_state != BT_CONNECT2) { | |
815 | err = -EINVAL; | |
816 | break; | |
817 | } | |
818 | ||
819 | voice.setting = sco_pi(sk)->setting; | |
820 | ||
821 | len = min_t(unsigned int, sizeof(voice), optlen); | |
822 | if (copy_from_user((char *) &voice, optval, len)) { | |
823 | err = -EFAULT; | |
824 | break; | |
825 | } | |
826 | ||
827 | /* Explicitly check for these values */ | |
828 | if (voice.setting != BT_VOICE_TRANSPARENT && | |
829 | voice.setting != BT_VOICE_CVSD_16BIT) { | |
830 | err = -EINVAL; | |
831 | break; | |
832 | } | |
833 | ||
834 | sco_pi(sk)->setting = voice.setting; | |
835 | break; | |
836 | ||
1da177e4 LT |
837 | default: |
838 | err = -ENOPROTOOPT; | |
839 | break; | |
840 | } | |
841 | ||
842 | release_sock(sk); | |
843 | return err; | |
844 | } | |
845 | ||
d58daf42 | 846 | static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
1da177e4 LT |
847 | { |
848 | struct sock *sk = sock->sk; | |
849 | struct sco_options opts; | |
850 | struct sco_conninfo cinfo; | |
8e87d142 | 851 | int len, err = 0; |
1da177e4 LT |
852 | |
853 | BT_DBG("sk %p", sk); | |
854 | ||
855 | if (get_user(len, optlen)) | |
856 | return -EFAULT; | |
857 | ||
858 | lock_sock(sk); | |
859 | ||
860 | switch (optname) { | |
861 | case SCO_OPTIONS: | |
9d225d22 JH |
862 | if (sk->sk_state != BT_CONNECTED && |
863 | !(sk->sk_state == BT_CONNECT2 && | |
864 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
865 | err = -ENOTCONN; |
866 | break; | |
867 | } | |
868 | ||
869 | opts.mtu = sco_pi(sk)->conn->mtu; | |
870 | ||
871 | BT_DBG("mtu %d", opts.mtu); | |
872 | ||
873 | len = min_t(unsigned int, len, sizeof(opts)); | |
874 | if (copy_to_user(optval, (char *)&opts, len)) | |
875 | err = -EFAULT; | |
876 | ||
877 | break; | |
878 | ||
879 | case SCO_CONNINFO: | |
9d225d22 JH |
880 | if (sk->sk_state != BT_CONNECTED && |
881 | !(sk->sk_state == BT_CONNECT2 && | |
882 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
883 | err = -ENOTCONN; |
884 | break; | |
885 | } | |
886 | ||
c4c896e1 | 887 | memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4 LT |
888 | cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; |
889 | memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); | |
890 | ||
891 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
892 | if (copy_to_user(optval, (char *)&cinfo, len)) | |
893 | err = -EFAULT; | |
894 | ||
895 | break; | |
896 | ||
897 | default: | |
898 | err = -ENOPROTOOPT; | |
899 | break; | |
900 | } | |
901 | ||
902 | release_sock(sk); | |
903 | return err; | |
904 | } | |
905 | ||
d58daf42 MH |
906 | static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) |
907 | { | |
908 | struct sock *sk = sock->sk; | |
909 | int len, err = 0; | |
ad10b1a4 | 910 | struct bt_voice voice; |
d58daf42 MH |
911 | |
912 | BT_DBG("sk %p", sk); | |
913 | ||
914 | if (level == SOL_SCO) | |
915 | return sco_sock_getsockopt_old(sock, optname, optval, optlen); | |
916 | ||
917 | if (get_user(len, optlen)) | |
918 | return -EFAULT; | |
919 | ||
920 | lock_sock(sk); | |
921 | ||
922 | switch (optname) { | |
b96e9c67 FD |
923 | |
924 | case BT_DEFER_SETUP: | |
925 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
926 | err = -EINVAL; | |
927 | break; | |
928 | } | |
929 | ||
930 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), | |
931 | (u32 __user *) optval)) | |
932 | err = -EFAULT; | |
933 | ||
934 | break; | |
935 | ||
ad10b1a4 FD |
936 | case BT_VOICE: |
937 | voice.setting = sco_pi(sk)->setting; | |
938 | ||
939 | len = min_t(unsigned int, len, sizeof(voice)); | |
940 | if (copy_to_user(optval, (char *)&voice, len)) | |
941 | err = -EFAULT; | |
942 | ||
943 | break; | |
944 | ||
d58daf42 MH |
945 | default: |
946 | err = -ENOPROTOOPT; | |
947 | break; | |
948 | } | |
949 | ||
950 | release_sock(sk); | |
951 | return err; | |
952 | } | |
953 | ||
fd0b3ff7 MH |
954 | static int sco_sock_shutdown(struct socket *sock, int how) |
955 | { | |
956 | struct sock *sk = sock->sk; | |
957 | int err = 0; | |
958 | ||
959 | BT_DBG("sock %p, sk %p", sock, sk); | |
960 | ||
961 | if (!sk) | |
962 | return 0; | |
963 | ||
964 | lock_sock(sk); | |
965 | if (!sk->sk_shutdown) { | |
966 | sk->sk_shutdown = SHUTDOWN_MASK; | |
967 | sco_sock_clear_timer(sk); | |
968 | __sco_sock_close(sk); | |
969 | ||
093facf3 VD |
970 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
971 | !(current->flags & PF_EXITING)) | |
fd0b3ff7 | 972 | err = bt_sock_wait_state(sk, BT_CLOSED, |
be7c2b99 | 973 | sk->sk_lingertime); |
fd0b3ff7 MH |
974 | } |
975 | release_sock(sk); | |
976 | return err; | |
977 | } | |
978 | ||
1da177e4 LT |
979 | static int sco_sock_release(struct socket *sock) |
980 | { | |
981 | struct sock *sk = sock->sk; | |
982 | int err = 0; | |
983 | ||
984 | BT_DBG("sock %p, sk %p", sock, sk); | |
985 | ||
986 | if (!sk) | |
987 | return 0; | |
988 | ||
989 | sco_sock_close(sk); | |
990 | ||
093facf3 VD |
991 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
992 | !(current->flags & PF_EXITING)) { | |
1da177e4 LT |
993 | lock_sock(sk); |
994 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
995 | release_sock(sk); | |
996 | } | |
997 | ||
998 | sock_orphan(sk); | |
999 | sco_sock_kill(sk); | |
1000 | return err; | |
1001 | } | |
1002 | ||
1da177e4 LT |
1003 | static void sco_conn_ready(struct sco_conn *conn) |
1004 | { | |
735cbc47 AE |
1005 | struct sock *parent; |
1006 | struct sock *sk = conn->sk; | |
1da177e4 LT |
1007 | |
1008 | BT_DBG("conn %p", conn); | |
1009 | ||
735cbc47 | 1010 | if (sk) { |
1da177e4 LT |
1011 | sco_sock_clear_timer(sk); |
1012 | bh_lock_sock(sk); | |
1013 | sk->sk_state = BT_CONNECTED; | |
1014 | sk->sk_state_change(sk); | |
1015 | bh_unlock_sock(sk); | |
1016 | } else { | |
40528088 AG |
1017 | sco_conn_lock(conn); |
1018 | ||
041987cf | 1019 | parent = sco_get_sock_listen(&conn->hcon->src); |
40528088 AG |
1020 | if (!parent) { |
1021 | sco_conn_unlock(conn); | |
1022 | return; | |
1023 | } | |
1da177e4 LT |
1024 | |
1025 | bh_lock_sock(parent); | |
1026 | ||
b9dbdbc1 | 1027 | sk = sco_sock_alloc(sock_net(parent), NULL, |
11aa9c28 | 1028 | BTPROTO_SCO, GFP_ATOMIC, 0); |
1da177e4 LT |
1029 | if (!sk) { |
1030 | bh_unlock_sock(parent); | |
40528088 AG |
1031 | sco_conn_unlock(conn); |
1032 | return; | |
1da177e4 LT |
1033 | } |
1034 | ||
1035 | sco_sock_init(sk, parent); | |
1036 | ||
eea96364 MH |
1037 | bacpy(&sco_pi(sk)->src, &conn->hcon->src); |
1038 | bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); | |
1da177e4 LT |
1039 | |
1040 | hci_conn_hold(conn->hcon); | |
1041 | __sco_chan_add(conn, sk, parent); | |
1042 | ||
20714bfe FD |
1043 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
1044 | sk->sk_state = BT_CONNECT2; | |
1045 | else | |
1046 | sk->sk_state = BT_CONNECTED; | |
1da177e4 LT |
1047 | |
1048 | /* Wake up parent */ | |
676d2369 | 1049 | parent->sk_data_ready(parent); |
1da177e4 LT |
1050 | |
1051 | bh_unlock_sock(parent); | |
1da177e4 | 1052 | |
40528088 AG |
1053 | sco_conn_unlock(conn); |
1054 | } | |
1da177e4 LT |
1055 | } |
1056 | ||
1057 | /* ----- SCO interface with lower layer (HCI) ----- */ | |
20714bfe | 1058 | int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4 | 1059 | { |
fc5fef61 | 1060 | struct sock *sk; |
71aeeaa1 MH |
1061 | int lm = 0; |
1062 | ||
6ed93dc6 | 1063 | BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4 | 1064 | |
71aeeaa1 MH |
1065 | /* Find listening sockets */ |
1066 | read_lock(&sco_sk_list.lock); | |
b67bfe0d | 1067 | sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1 MH |
1068 | if (sk->sk_state != BT_LISTEN) |
1069 | continue; | |
1070 | ||
eea96364 MH |
1071 | if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || |
1072 | !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { | |
71aeeaa1 | 1073 | lm |= HCI_LM_ACCEPT; |
20714bfe FD |
1074 | |
1075 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) | |
1076 | *flags |= HCI_PROTO_DEFER; | |
71aeeaa1 MH |
1077 | break; |
1078 | } | |
1079 | } | |
1080 | read_unlock(&sco_sk_list.lock); | |
1081 | ||
1082 | return lm; | |
1da177e4 LT |
1083 | } |
1084 | ||
539c496d | 1085 | static void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4 | 1086 | { |
539c496d JH |
1087 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1088 | return; | |
1089 | ||
6ed93dc6 | 1090 | BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status); |
539c496d | 1091 | |
1da177e4 LT |
1092 | if (!status) { |
1093 | struct sco_conn *conn; | |
1094 | ||
519e42b3 | 1095 | conn = sco_conn_add(hcon); |
1da177e4 LT |
1096 | if (conn) |
1097 | sco_conn_ready(conn); | |
8e87d142 | 1098 | } else |
e175072f | 1099 | sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4 LT |
1100 | } |
1101 | ||
3a6d576b | 1102 | static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4 | 1103 | { |
3a6d576b JH |
1104 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1105 | return; | |
1106 | ||
1da177e4 LT |
1107 | BT_DBG("hcon %p reason %d", hcon, reason); |
1108 | ||
e175072f | 1109 | sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4 LT |
1110 | } |
1111 | ||
9b4c3336 | 1112 | void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4 LT |
1113 | { |
1114 | struct sco_conn *conn = hcon->sco_data; | |
1115 | ||
1116 | if (!conn) | |
1117 | goto drop; | |
1118 | ||
1119 | BT_DBG("conn %p len %d", conn, skb->len); | |
1120 | ||
1121 | if (skb->len) { | |
1122 | sco_recv_frame(conn, skb); | |
9b4c3336 | 1123 | return; |
1da177e4 LT |
1124 | } |
1125 | ||
1126 | drop: | |
8e87d142 | 1127 | kfree_skb(skb); |
1da177e4 LT |
1128 | } |
1129 | ||
539c496d JH |
1130 | static struct hci_cb sco_cb = { |
1131 | .name = "SCO", | |
1132 | .connect_cfm = sco_connect_cfm, | |
3a6d576b | 1133 | .disconn_cfm = sco_disconn_cfm, |
539c496d JH |
1134 | }; |
1135 | ||
aef7d97c | 1136 | static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1137 | { |
1138 | struct sock *sk; | |
1da177e4 | 1139 | |
ee65d19e | 1140 | read_lock(&sco_sk_list.lock); |
1da177e4 | 1141 | |
b67bfe0d | 1142 | sk_for_each(sk, &sco_sk_list.head) { |
eea96364 MH |
1143 | seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src, |
1144 | &sco_pi(sk)->dst, sk->sk_state); | |
be9d1227 | 1145 | } |
1da177e4 | 1146 | |
ee65d19e | 1147 | read_unlock(&sco_sk_list.lock); |
1da177e4 | 1148 | |
aef7d97c | 1149 | return 0; |
1da177e4 LT |
1150 | } |
1151 | ||
aef7d97c MH |
1152 | static int sco_debugfs_open(struct inode *inode, struct file *file) |
1153 | { | |
1154 | return single_open(file, sco_debugfs_show, inode->i_private); | |
1155 | } | |
1156 | ||
1157 | static const struct file_operations sco_debugfs_fops = { | |
1158 | .open = sco_debugfs_open, | |
1159 | .read = seq_read, | |
1160 | .llseek = seq_lseek, | |
1161 | .release = single_release, | |
1162 | }; | |
1163 | ||
1164 | static struct dentry *sco_debugfs; | |
1da177e4 | 1165 | |
90ddc4f0 | 1166 | static const struct proto_ops sco_sock_ops = { |
1da177e4 LT |
1167 | .family = PF_BLUETOOTH, |
1168 | .owner = THIS_MODULE, | |
1169 | .release = sco_sock_release, | |
1170 | .bind = sco_sock_bind, | |
1171 | .connect = sco_sock_connect, | |
1172 | .listen = sco_sock_listen, | |
1173 | .accept = sco_sock_accept, | |
1174 | .getname = sco_sock_getname, | |
1175 | .sendmsg = sco_sock_sendmsg, | |
20714bfe | 1176 | .recvmsg = sco_sock_recvmsg, |
1da177e4 | 1177 | .poll = bt_sock_poll, |
3241ad82 | 1178 | .ioctl = bt_sock_ioctl, |
1da177e4 LT |
1179 | .mmap = sock_no_mmap, |
1180 | .socketpair = sock_no_socketpair, | |
fd0b3ff7 | 1181 | .shutdown = sco_sock_shutdown, |
1da177e4 LT |
1182 | .setsockopt = sco_sock_setsockopt, |
1183 | .getsockopt = sco_sock_getsockopt | |
1184 | }; | |
1185 | ||
ec1b4cf7 | 1186 | static const struct net_proto_family sco_sock_family_ops = { |
1da177e4 LT |
1187 | .family = PF_BLUETOOTH, |
1188 | .owner = THIS_MODULE, | |
1189 | .create = sco_sock_create, | |
1190 | }; | |
1191 | ||
64274518 | 1192 | int __init sco_init(void) |
1da177e4 LT |
1193 | { |
1194 | int err; | |
1195 | ||
15762fa7 MH |
1196 | BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr)); |
1197 | ||
1da177e4 LT |
1198 | err = proto_register(&sco_proto, 0); |
1199 | if (err < 0) | |
1200 | return err; | |
1201 | ||
1202 | err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); | |
1203 | if (err < 0) { | |
1204 | BT_ERR("SCO socket registration failed"); | |
1205 | goto error; | |
1206 | } | |
1207 | ||
b0316615 | 1208 | err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212 MY |
1209 | if (err < 0) { |
1210 | BT_ERR("Failed to create SCO proc file"); | |
1211 | bt_sock_unregister(BTPROTO_SCO); | |
1212 | goto error; | |
1213 | } | |
1214 | ||
1da177e4 LT |
1215 | BT_INFO("SCO socket layer initialized"); |
1216 | ||
539c496d JH |
1217 | hci_register_cb(&sco_cb); |
1218 | ||
1120e4bf MH |
1219 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1220 | return 0; | |
1221 | ||
1222 | sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, | |
1223 | NULL, &sco_debugfs_fops); | |
1224 | ||
1da177e4 LT |
1225 | return 0; |
1226 | ||
1227 | error: | |
1228 | proto_unregister(&sco_proto); | |
1229 | return err; | |
1230 | } | |
1231 | ||
0402d9f2 | 1232 | void sco_exit(void) |
1da177e4 | 1233 | { |
de9b9212 MY |
1234 | bt_procfs_cleanup(&init_net, "sco"); |
1235 | ||
aef7d97c | 1236 | debugfs_remove(sco_debugfs); |
1da177e4 | 1237 | |
539c496d JH |
1238 | hci_unregister_cb(&sco_cb); |
1239 | ||
5e9d7f86 | 1240 | bt_sock_unregister(BTPROTO_SCO); |
1da177e4 | 1241 | |
1da177e4 LT |
1242 | proto_unregister(&sco_proto); |
1243 | } | |
1244 | ||
7cb127d5 MH |
1245 | module_param(disable_esco, bool, 0644); |
1246 | MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |