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) { |
75e34f5c | 173 | sock_hold(sk); |
1da177e4 LT |
174 | bh_lock_sock(sk); |
175 | sco_sock_clear_timer(sk); | |
176 | sco_chan_del(sk, err); | |
177 | bh_unlock_sock(sk); | |
178 | sco_sock_kill(sk); | |
75e34f5c | 179 | sock_put(sk); |
1da177e4 LT |
180 | } |
181 | ||
182 | hcon->sco_data = NULL; | |
183 | kfree(conn); | |
1da177e4 LT |
184 | } |
185 | ||
015b01cb MH |
186 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent) |
187 | { | |
188 | BT_DBG("conn %p", conn); | |
189 | ||
190 | sco_pi(sk)->conn = conn; | |
191 | conn->sk = sk; | |
192 | ||
193 | if (parent) | |
194 | bt_accept_enqueue(parent, sk); | |
195 | } | |
196 | ||
6039aa73 GP |
197 | static int sco_chan_add(struct sco_conn *conn, struct sock *sk, |
198 | struct sock *parent) | |
1da177e4 LT |
199 | { |
200 | int err = 0; | |
201 | ||
202 | sco_conn_lock(conn); | |
b9dbdbc1 | 203 | if (conn->sk) |
1da177e4 | 204 | err = -EBUSY; |
b9dbdbc1 | 205 | else |
1da177e4 | 206 | __sco_chan_add(conn, sk, parent); |
b9dbdbc1 | 207 | |
1da177e4 LT |
208 | sco_conn_unlock(conn); |
209 | return err; | |
210 | } | |
211 | ||
212 | static int sco_connect(struct sock *sk) | |
213 | { | |
1da177e4 LT |
214 | struct sco_conn *conn; |
215 | struct hci_conn *hcon; | |
216 | struct hci_dev *hdev; | |
b6a0dc82 | 217 | int err, type; |
1da177e4 | 218 | |
eea96364 | 219 | BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst); |
1da177e4 | 220 | |
eea96364 | 221 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src); |
735cbc47 | 222 | if (!hdev) |
1da177e4 LT |
223 | return -EHOSTUNREACH; |
224 | ||
09fd0de5 | 225 | hci_dev_lock(hdev); |
1da177e4 | 226 | |
7cb127d5 MH |
227 | if (lmp_esco_capable(hdev) && !disable_esco) |
228 | type = ESCO_LINK; | |
229 | else | |
230 | type = SCO_LINK; | |
b6a0dc82 | 231 | |
79dc0087 FD |
232 | if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT && |
233 | (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) { | |
234 | err = -EOPNOTSUPP; | |
235 | goto done; | |
236 | } | |
237 | ||
eea96364 | 238 | hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst, |
041987cf | 239 | sco_pi(sk)->setting); |
30e76272 VT |
240 | if (IS_ERR(hcon)) { |
241 | err = PTR_ERR(hcon); | |
1da177e4 | 242 | goto done; |
30e76272 | 243 | } |
1da177e4 | 244 | |
519e42b3 | 245 | conn = sco_conn_add(hcon); |
1da177e4 | 246 | if (!conn) { |
76a68ba0 | 247 | hci_conn_drop(hcon); |
30e76272 | 248 | err = -ENOMEM; |
1da177e4 LT |
249 | goto done; |
250 | } | |
251 | ||
252 | /* Update source addr of the socket */ | |
eea96364 | 253 | bacpy(&sco_pi(sk)->src, &hcon->src); |
1da177e4 LT |
254 | |
255 | err = sco_chan_add(conn, sk, NULL); | |
256 | if (err) | |
257 | goto done; | |
258 | ||
259 | if (hcon->state == BT_CONNECTED) { | |
260 | sco_sock_clear_timer(sk); | |
261 | sk->sk_state = BT_CONNECTED; | |
262 | } else { | |
263 | sk->sk_state = BT_CONNECT; | |
264 | sco_sock_set_timer(sk, sk->sk_sndtimeo); | |
265 | } | |
b6a0dc82 | 266 | |
1da177e4 | 267 | done: |
09fd0de5 | 268 | hci_dev_unlock(hdev); |
1da177e4 LT |
269 | hci_dev_put(hdev); |
270 | return err; | |
271 | } | |
272 | ||
6039aa73 | 273 | static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len) |
1da177e4 LT |
274 | { |
275 | struct sco_conn *conn = sco_pi(sk)->conn; | |
276 | struct sk_buff *skb; | |
088ce088 | 277 | int err; |
1da177e4 LT |
278 | |
279 | /* Check outgoing MTU */ | |
280 | if (len > conn->mtu) | |
281 | return -EINVAL; | |
282 | ||
283 | BT_DBG("sk %p len %d", sk, len); | |
284 | ||
088ce088 | 285 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
b9dbdbc1 | 286 | if (!skb) |
1da177e4 LT |
287 | return err; |
288 | ||
6ce8e9ce | 289 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
b9dbdbc1 GP |
290 | kfree_skb(skb); |
291 | return -EFAULT; | |
1da177e4 LT |
292 | } |
293 | ||
0d861d8b | 294 | hci_send_sco(conn->hcon, skb); |
1da177e4 | 295 | |
088ce088 | 296 | return len; |
1da177e4 LT |
297 | } |
298 | ||
6039aa73 | 299 | static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb) |
1da177e4 | 300 | { |
eb5a4de8 MH |
301 | struct sock *sk; |
302 | ||
303 | sco_conn_lock(conn); | |
304 | sk = conn->sk; | |
305 | sco_conn_unlock(conn); | |
1da177e4 LT |
306 | |
307 | if (!sk) | |
308 | goto drop; | |
309 | ||
310 | BT_DBG("sk %p len %d", sk, skb->len); | |
311 | ||
312 | if (sk->sk_state != BT_CONNECTED) | |
313 | goto drop; | |
314 | ||
315 | if (!sock_queue_rcv_skb(sk, skb)) | |
316 | return; | |
317 | ||
318 | drop: | |
319 | kfree_skb(skb); | |
1da177e4 LT |
320 | } |
321 | ||
322 | /* -------- Socket interface ---------- */ | |
fb334059 | 323 | static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba) |
1da177e4 | 324 | { |
fb334059 MH |
325 | struct sock *sk; |
326 | ||
b67bfe0d | 327 | sk_for_each(sk, &sco_sk_list.head) { |
fb334059 MH |
328 | if (sk->sk_state != BT_LISTEN) |
329 | continue; | |
1da177e4 | 330 | |
eea96364 | 331 | if (!bacmp(&sco_pi(sk)->src, ba)) |
fb334059 MH |
332 | return sk; |
333 | } | |
334 | ||
335 | return NULL; | |
1da177e4 LT |
336 | } |
337 | ||
338 | /* Find socket listening on source bdaddr. | |
339 | * Returns closest match. | |
340 | */ | |
341 | static struct sock *sco_get_sock_listen(bdaddr_t *src) | |
342 | { | |
343 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 LT |
344 | |
345 | read_lock(&sco_sk_list.lock); | |
346 | ||
b67bfe0d | 347 | sk_for_each(sk, &sco_sk_list.head) { |
1da177e4 LT |
348 | if (sk->sk_state != BT_LISTEN) |
349 | continue; | |
350 | ||
351 | /* Exact match. */ | |
eea96364 | 352 | if (!bacmp(&sco_pi(sk)->src, src)) |
1da177e4 LT |
353 | break; |
354 | ||
355 | /* Closest match */ | |
eea96364 | 356 | if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY)) |
1da177e4 LT |
357 | sk1 = sk; |
358 | } | |
359 | ||
360 | read_unlock(&sco_sk_list.lock); | |
361 | ||
b67bfe0d | 362 | return sk ? sk : sk1; |
1da177e4 LT |
363 | } |
364 | ||
365 | static void sco_sock_destruct(struct sock *sk) | |
366 | { | |
367 | BT_DBG("sk %p", sk); | |
368 | ||
369 | skb_queue_purge(&sk->sk_receive_queue); | |
370 | skb_queue_purge(&sk->sk_write_queue); | |
371 | } | |
372 | ||
373 | static void sco_sock_cleanup_listen(struct sock *parent) | |
374 | { | |
375 | struct sock *sk; | |
376 | ||
377 | BT_DBG("parent %p", parent); | |
378 | ||
379 | /* Close not yet accepted channels */ | |
380 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
381 | sco_sock_close(sk); | |
382 | sco_sock_kill(sk); | |
383 | } | |
384 | ||
385 | parent->sk_state = BT_CLOSED; | |
386 | sock_set_flag(parent, SOCK_ZAPPED); | |
387 | } | |
388 | ||
389 | /* Kill socket (only if zapped and orphan) | |
390 | * Must be called on unlocked socket. | |
391 | */ | |
392 | static void sco_sock_kill(struct sock *sk) | |
393 | { | |
394 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
395 | return; | |
396 | ||
397 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
398 | ||
399 | /* Kill poor orphan */ | |
400 | bt_sock_unlink(&sco_sk_list, sk); | |
401 | sock_set_flag(sk, SOCK_DEAD); | |
402 | sock_put(sk); | |
403 | } | |
404 | ||
fd0b3ff7 | 405 | static void __sco_sock_close(struct sock *sk) |
1da177e4 | 406 | { |
fd0b3ff7 | 407 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
1da177e4 LT |
408 | |
409 | switch (sk->sk_state) { | |
410 | case BT_LISTEN: | |
411 | sco_sock_cleanup_listen(sk); | |
412 | break; | |
413 | ||
414 | case BT_CONNECTED: | |
415 | case BT_CONFIG: | |
b7e98b51 | 416 | if (sco_pi(sk)->conn->hcon) { |
4a77708b LAD |
417 | sk->sk_state = BT_DISCONN; |
418 | sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); | |
435c5133 | 419 | sco_conn_lock(sco_pi(sk)->conn); |
76a68ba0 | 420 | hci_conn_drop(sco_pi(sk)->conn->hcon); |
4a77708b | 421 | sco_pi(sk)->conn->hcon = NULL; |
435c5133 | 422 | sco_conn_unlock(sco_pi(sk)->conn); |
4a77708b LAD |
423 | } else |
424 | sco_chan_del(sk, ECONNRESET); | |
425 | break; | |
426 | ||
eb20ff9c | 427 | case BT_CONNECT2: |
1da177e4 LT |
428 | case BT_CONNECT: |
429 | case BT_DISCONN: | |
430 | sco_chan_del(sk, ECONNRESET); | |
431 | break; | |
432 | ||
433 | default: | |
434 | sock_set_flag(sk, SOCK_ZAPPED); | |
435 | break; | |
3ff50b79 | 436 | } |
fd0b3ff7 | 437 | } |
1da177e4 | 438 | |
fd0b3ff7 MH |
439 | /* Must be called on unlocked socket. */ |
440 | static void sco_sock_close(struct sock *sk) | |
441 | { | |
442 | sco_sock_clear_timer(sk); | |
443 | lock_sock(sk); | |
444 | __sco_sock_close(sk); | |
1da177e4 | 445 | release_sock(sk); |
1da177e4 LT |
446 | sco_sock_kill(sk); |
447 | } | |
448 | ||
449 | static void sco_sock_init(struct sock *sk, struct sock *parent) | |
450 | { | |
451 | BT_DBG("sk %p", sk); | |
452 | ||
6230c9b4 | 453 | if (parent) { |
1da177e4 | 454 | sk->sk_type = parent->sk_type; |
20714bfe | 455 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
6230c9b4 PM |
456 | security_sk_clone(parent, sk); |
457 | } | |
1da177e4 LT |
458 | } |
459 | ||
460 | static struct proto sco_proto = { | |
461 | .name = "SCO", | |
462 | .owner = THIS_MODULE, | |
463 | .obj_size = sizeof(struct sco_pinfo) | |
464 | }; | |
465 | ||
11aa9c28 | 466 | static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio, int kern) |
1da177e4 LT |
467 | { |
468 | struct sock *sk; | |
469 | ||
11aa9c28 | 470 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern); |
1da177e4 LT |
471 | if (!sk) |
472 | return NULL; | |
473 | ||
474 | sock_init_data(sock, sk); | |
475 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
476 | ||
477 | sk->sk_destruct = sco_sock_destruct; | |
478 | sk->sk_sndtimeo = SCO_CONN_TIMEOUT; | |
479 | ||
480 | sock_reset_flag(sk, SOCK_ZAPPED); | |
481 | ||
482 | sk->sk_protocol = proto; | |
483 | sk->sk_state = BT_OPEN; | |
484 | ||
ad10b1a4 FD |
485 | sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
486 | ||
b24b8a24 | 487 | setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk); |
1da177e4 LT |
488 | |
489 | bt_sock_link(&sco_sk_list, sk); | |
490 | return sk; | |
491 | } | |
492 | ||
3f378b68 EP |
493 | static int sco_sock_create(struct net *net, struct socket *sock, int protocol, |
494 | int kern) | |
1da177e4 LT |
495 | { |
496 | struct sock *sk; | |
497 | ||
498 | BT_DBG("sock %p", sock); | |
499 | ||
500 | sock->state = SS_UNCONNECTED; | |
501 | ||
502 | if (sock->type != SOCK_SEQPACKET) | |
503 | return -ESOCKTNOSUPPORT; | |
504 | ||
505 | sock->ops = &sco_sock_ops; | |
506 | ||
11aa9c28 | 507 | sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); |
74da626a | 508 | if (!sk) |
1da177e4 LT |
509 | return -ENOMEM; |
510 | ||
511 | sco_sock_init(sk, NULL); | |
512 | return 0; | |
513 | } | |
514 | ||
515 | static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
516 | { | |
517 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
518 | struct sock *sk = sock->sk; | |
1da177e4 LT |
519 | int err = 0; |
520 | ||
6ed93dc6 | 521 | BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
1da177e4 LT |
522 | |
523 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
524 | return -EINVAL; | |
525 | ||
526 | lock_sock(sk); | |
527 | ||
528 | if (sk->sk_state != BT_OPEN) { | |
529 | err = -EBADFD; | |
530 | goto done; | |
531 | } | |
532 | ||
8ed21f7e MH |
533 | if (sk->sk_type != SOCK_SEQPACKET) { |
534 | err = -EINVAL; | |
535 | goto done; | |
1da177e4 LT |
536 | } |
537 | ||
eea96364 | 538 | bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
8ed21f7e MH |
539 | |
540 | sk->sk_state = BT_BOUND; | |
1da177e4 LT |
541 | |
542 | done: | |
543 | release_sock(sk); | |
544 | return err; | |
545 | } | |
546 | ||
547 | static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
548 | { | |
549 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
550 | struct sock *sk = sock->sk; | |
92f185c8 | 551 | int err; |
1da177e4 LT |
552 | |
553 | BT_DBG("sk %p", sk); | |
554 | ||
6503d961 CG |
555 | if (alen < sizeof(struct sockaddr_sco) || |
556 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
557 | return -EINVAL; |
558 | ||
559 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) | |
560 | return -EBADFD; | |
561 | ||
562 | if (sk->sk_type != SOCK_SEQPACKET) | |
563 | return -EINVAL; | |
564 | ||
565 | lock_sock(sk); | |
566 | ||
567 | /* Set destination address and psm */ | |
eea96364 | 568 | bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
1da177e4 | 569 | |
735cbc47 AE |
570 | err = sco_connect(sk); |
571 | if (err) | |
1da177e4 LT |
572 | goto done; |
573 | ||
8e87d142 | 574 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99 | 575 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4 LT |
576 | |
577 | done: | |
578 | release_sock(sk); | |
579 | return err; | |
580 | } | |
581 | ||
582 | static int sco_sock_listen(struct socket *sock, int backlog) | |
583 | { | |
584 | struct sock *sk = sock->sk; | |
eea96364 | 585 | bdaddr_t *src = &sco_pi(sk)->src; |
1da177e4 LT |
586 | int err = 0; |
587 | ||
588 | BT_DBG("sk %p backlog %d", sk, backlog); | |
589 | ||
590 | lock_sock(sk); | |
591 | ||
7d5d775a | 592 | if (sk->sk_state != BT_BOUND) { |
1da177e4 LT |
593 | err = -EBADFD; |
594 | goto done; | |
595 | } | |
596 | ||
7d5d775a MH |
597 | if (sk->sk_type != SOCK_SEQPACKET) { |
598 | err = -EINVAL; | |
599 | goto done; | |
600 | } | |
601 | ||
fb334059 MH |
602 | write_lock(&sco_sk_list.lock); |
603 | ||
604 | if (__sco_get_sock_listen_by_addr(src)) { | |
605 | err = -EADDRINUSE; | |
606 | goto unlock; | |
607 | } | |
608 | ||
1da177e4 LT |
609 | sk->sk_max_ack_backlog = backlog; |
610 | sk->sk_ack_backlog = 0; | |
fb334059 | 611 | |
1da177e4 LT |
612 | sk->sk_state = BT_LISTEN; |
613 | ||
fb334059 MH |
614 | unlock: |
615 | write_unlock(&sco_sk_list.lock); | |
616 | ||
1da177e4 LT |
617 | done: |
618 | release_sock(sk); | |
619 | return err; | |
620 | } | |
621 | ||
622 | static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flags) | |
623 | { | |
dfb2fae7 | 624 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4 LT |
625 | struct sock *sk = sock->sk, *ch; |
626 | long timeo; | |
627 | int err = 0; | |
628 | ||
629 | lock_sock(sk); | |
630 | ||
1da177e4 LT |
631 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
632 | ||
633 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
634 | ||
635 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 636 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3c | 637 | while (1) { |
552b0d3c PH |
638 | if (sk->sk_state != BT_LISTEN) { |
639 | err = -EBADFD; | |
1da177e4 LT |
640 | break; |
641 | } | |
642 | ||
552b0d3c PH |
643 | ch = bt_accept_dequeue(sk, newsock); |
644 | if (ch) | |
645 | break; | |
1da177e4 | 646 | |
552b0d3c PH |
647 | if (!timeo) { |
648 | err = -EAGAIN; | |
1da177e4 LT |
649 | break; |
650 | } | |
651 | ||
652 | if (signal_pending(current)) { | |
653 | err = sock_intr_errno(timeo); | |
654 | break; | |
655 | } | |
552b0d3c PH |
656 | |
657 | release_sock(sk); | |
dfb2fae7 PH |
658 | |
659 | timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); | |
552b0d3c | 660 | lock_sock(sk); |
1da177e4 | 661 | } |
aa395145 | 662 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
663 | |
664 | if (err) | |
665 | goto done; | |
666 | ||
667 | newsock->state = SS_CONNECTED; | |
668 | ||
669 | BT_DBG("new socket %p", ch); | |
670 | ||
671 | done: | |
672 | release_sock(sk); | |
673 | return err; | |
674 | } | |
675 | ||
676 | static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) | |
677 | { | |
678 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
679 | struct sock *sk = sock->sk; | |
680 | ||
681 | BT_DBG("sock %p, sk %p", sock, sk); | |
682 | ||
683 | addr->sa_family = AF_BLUETOOTH; | |
684 | *len = sizeof(struct sockaddr_sco); | |
685 | ||
686 | if (peer) | |
eea96364 | 687 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
1da177e4 | 688 | else |
eea96364 | 689 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
1da177e4 LT |
690 | |
691 | return 0; | |
692 | } | |
693 | ||
1b784140 YX |
694 | static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
695 | size_t len) | |
1da177e4 LT |
696 | { |
697 | struct sock *sk = sock->sk; | |
b9dbdbc1 | 698 | int err; |
1da177e4 LT |
699 | |
700 | BT_DBG("sock %p, sk %p", sock, sk); | |
701 | ||
c1cbe4b7 BL |
702 | err = sock_error(sk); |
703 | if (err) | |
704 | return err; | |
1da177e4 LT |
705 | |
706 | if (msg->msg_flags & MSG_OOB) | |
707 | return -EOPNOTSUPP; | |
708 | ||
709 | lock_sock(sk); | |
710 | ||
711 | if (sk->sk_state == BT_CONNECTED) | |
712 | err = sco_send_frame(sk, msg, len); | |
713 | else | |
714 | err = -ENOTCONN; | |
715 | ||
716 | release_sock(sk); | |
717 | return err; | |
718 | } | |
719 | ||
2f69a82a | 720 | static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
fa5513be FD |
721 | { |
722 | struct hci_dev *hdev = conn->hdev; | |
723 | ||
724 | BT_DBG("conn %p", conn); | |
725 | ||
726 | conn->state = BT_CONFIG; | |
727 | ||
728 | if (!lmp_esco_capable(hdev)) { | |
729 | struct hci_cp_accept_conn_req cp; | |
730 | ||
731 | bacpy(&cp.bdaddr, &conn->dst); | |
33f24048 | 732 | cp.role = 0x00; /* Ignored */ |
fa5513be FD |
733 | |
734 | hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); | |
735 | } else { | |
736 | struct hci_cp_accept_sync_conn_req cp; | |
737 | ||
738 | bacpy(&cp.bdaddr, &conn->dst); | |
739 | cp.pkt_type = cpu_to_le16(conn->pkt_type); | |
740 | ||
dcf4adbf JP |
741 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
742 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
2f69a82a FD |
743 | cp.content_format = cpu_to_le16(setting); |
744 | ||
745 | switch (setting & SCO_AIRMODE_MASK) { | |
746 | case SCO_AIRMODE_TRANSP: | |
747 | if (conn->pkt_type & ESCO_2EV3) | |
dcf4adbf | 748 | cp.max_latency = cpu_to_le16(0x0008); |
2f69a82a | 749 | else |
dcf4adbf | 750 | cp.max_latency = cpu_to_le16(0x000D); |
2f69a82a FD |
751 | cp.retrans_effort = 0x02; |
752 | break; | |
753 | case SCO_AIRMODE_CVSD: | |
dcf4adbf | 754 | cp.max_latency = cpu_to_le16(0xffff); |
2f69a82a FD |
755 | cp.retrans_effort = 0xff; |
756 | break; | |
757 | } | |
fa5513be FD |
758 | |
759 | hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, | |
760 | sizeof(cp), &cp); | |
761 | } | |
762 | } | |
763 | ||
1b784140 YX |
764 | static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
765 | size_t len, int flags) | |
20714bfe FD |
766 | { |
767 | struct sock *sk = sock->sk; | |
768 | struct sco_pinfo *pi = sco_pi(sk); | |
769 | ||
770 | lock_sock(sk); | |
771 | ||
772 | if (sk->sk_state == BT_CONNECT2 && | |
773 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { | |
2f69a82a | 774 | sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
20714bfe FD |
775 | sk->sk_state = BT_CONFIG; |
776 | ||
777 | release_sock(sk); | |
778 | return 0; | |
779 | } | |
780 | ||
781 | release_sock(sk); | |
782 | ||
1b784140 | 783 | return bt_sock_recvmsg(sock, msg, len, flags); |
20714bfe FD |
784 | } |
785 | ||
b7058842 | 786 | static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
1da177e4 LT |
787 | { |
788 | struct sock *sk = sock->sk; | |
ad10b1a4 FD |
789 | int len, err = 0; |
790 | struct bt_voice voice; | |
b96e9c67 | 791 | u32 opt; |
1da177e4 LT |
792 | |
793 | BT_DBG("sk %p", sk); | |
794 | ||
795 | lock_sock(sk); | |
796 | ||
797 | switch (optname) { | |
b96e9c67 FD |
798 | |
799 | case BT_DEFER_SETUP: | |
800 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
801 | err = -EINVAL; | |
802 | break; | |
803 | } | |
804 | ||
805 | if (get_user(opt, (u32 __user *) optval)) { | |
806 | err = -EFAULT; | |
807 | break; | |
808 | } | |
809 | ||
810 | if (opt) | |
811 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
812 | else | |
813 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
814 | break; | |
815 | ||
ad10b1a4 FD |
816 | case BT_VOICE: |
817 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
818 | sk->sk_state != BT_CONNECT2) { | |
819 | err = -EINVAL; | |
820 | break; | |
821 | } | |
822 | ||
823 | voice.setting = sco_pi(sk)->setting; | |
824 | ||
825 | len = min_t(unsigned int, sizeof(voice), optlen); | |
826 | if (copy_from_user((char *) &voice, optval, len)) { | |
827 | err = -EFAULT; | |
828 | break; | |
829 | } | |
830 | ||
831 | /* Explicitly check for these values */ | |
832 | if (voice.setting != BT_VOICE_TRANSPARENT && | |
833 | voice.setting != BT_VOICE_CVSD_16BIT) { | |
834 | err = -EINVAL; | |
835 | break; | |
836 | } | |
837 | ||
838 | sco_pi(sk)->setting = voice.setting; | |
839 | break; | |
840 | ||
1da177e4 LT |
841 | default: |
842 | err = -ENOPROTOOPT; | |
843 | break; | |
844 | } | |
845 | ||
846 | release_sock(sk); | |
847 | return err; | |
848 | } | |
849 | ||
d58daf42 | 850 | static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
1da177e4 LT |
851 | { |
852 | struct sock *sk = sock->sk; | |
853 | struct sco_options opts; | |
854 | struct sco_conninfo cinfo; | |
8e87d142 | 855 | int len, err = 0; |
1da177e4 LT |
856 | |
857 | BT_DBG("sk %p", sk); | |
858 | ||
859 | if (get_user(len, optlen)) | |
860 | return -EFAULT; | |
861 | ||
862 | lock_sock(sk); | |
863 | ||
864 | switch (optname) { | |
865 | case SCO_OPTIONS: | |
9d225d22 JH |
866 | if (sk->sk_state != BT_CONNECTED && |
867 | !(sk->sk_state == BT_CONNECT2 && | |
868 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
869 | err = -ENOTCONN; |
870 | break; | |
871 | } | |
872 | ||
873 | opts.mtu = sco_pi(sk)->conn->mtu; | |
874 | ||
875 | BT_DBG("mtu %d", opts.mtu); | |
876 | ||
877 | len = min_t(unsigned int, len, sizeof(opts)); | |
878 | if (copy_to_user(optval, (char *)&opts, len)) | |
879 | err = -EFAULT; | |
880 | ||
881 | break; | |
882 | ||
883 | case SCO_CONNINFO: | |
9d225d22 JH |
884 | if (sk->sk_state != BT_CONNECTED && |
885 | !(sk->sk_state == BT_CONNECT2 && | |
886 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
887 | err = -ENOTCONN; |
888 | break; | |
889 | } | |
890 | ||
c4c896e1 | 891 | memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4 LT |
892 | cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; |
893 | memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); | |
894 | ||
895 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
896 | if (copy_to_user(optval, (char *)&cinfo, len)) | |
897 | err = -EFAULT; | |
898 | ||
899 | break; | |
900 | ||
901 | default: | |
902 | err = -ENOPROTOOPT; | |
903 | break; | |
904 | } | |
905 | ||
906 | release_sock(sk); | |
907 | return err; | |
908 | } | |
909 | ||
d58daf42 MH |
910 | static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) |
911 | { | |
912 | struct sock *sk = sock->sk; | |
913 | int len, err = 0; | |
ad10b1a4 | 914 | struct bt_voice voice; |
d58daf42 MH |
915 | |
916 | BT_DBG("sk %p", sk); | |
917 | ||
918 | if (level == SOL_SCO) | |
919 | return sco_sock_getsockopt_old(sock, optname, optval, optlen); | |
920 | ||
921 | if (get_user(len, optlen)) | |
922 | return -EFAULT; | |
923 | ||
924 | lock_sock(sk); | |
925 | ||
926 | switch (optname) { | |
b96e9c67 FD |
927 | |
928 | case BT_DEFER_SETUP: | |
929 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
930 | err = -EINVAL; | |
931 | break; | |
932 | } | |
933 | ||
934 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), | |
935 | (u32 __user *) optval)) | |
936 | err = -EFAULT; | |
937 | ||
938 | break; | |
939 | ||
ad10b1a4 FD |
940 | case BT_VOICE: |
941 | voice.setting = sco_pi(sk)->setting; | |
942 | ||
943 | len = min_t(unsigned int, len, sizeof(voice)); | |
944 | if (copy_to_user(optval, (char *)&voice, len)) | |
945 | err = -EFAULT; | |
946 | ||
947 | break; | |
948 | ||
d58daf42 MH |
949 | default: |
950 | err = -ENOPROTOOPT; | |
951 | break; | |
952 | } | |
953 | ||
954 | release_sock(sk); | |
955 | return err; | |
956 | } | |
957 | ||
fd0b3ff7 MH |
958 | static int sco_sock_shutdown(struct socket *sock, int how) |
959 | { | |
960 | struct sock *sk = sock->sk; | |
961 | int err = 0; | |
962 | ||
963 | BT_DBG("sock %p, sk %p", sock, sk); | |
964 | ||
965 | if (!sk) | |
966 | return 0; | |
967 | ||
1da5537e | 968 | sock_hold(sk); |
fd0b3ff7 | 969 | lock_sock(sk); |
1da5537e | 970 | |
fd0b3ff7 MH |
971 | if (!sk->sk_shutdown) { |
972 | sk->sk_shutdown = SHUTDOWN_MASK; | |
973 | sco_sock_clear_timer(sk); | |
974 | __sco_sock_close(sk); | |
975 | ||
093facf3 VD |
976 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
977 | !(current->flags & PF_EXITING)) | |
fd0b3ff7 | 978 | err = bt_sock_wait_state(sk, BT_CLOSED, |
be7c2b99 | 979 | sk->sk_lingertime); |
fd0b3ff7 | 980 | } |
1da5537e | 981 | |
fd0b3ff7 | 982 | release_sock(sk); |
1da5537e KP |
983 | sock_put(sk); |
984 | ||
fd0b3ff7 MH |
985 | return err; |
986 | } | |
987 | ||
1da177e4 LT |
988 | static int sco_sock_release(struct socket *sock) |
989 | { | |
990 | struct sock *sk = sock->sk; | |
991 | int err = 0; | |
992 | ||
993 | BT_DBG("sock %p, sk %p", sock, sk); | |
994 | ||
995 | if (!sk) | |
996 | return 0; | |
997 | ||
998 | sco_sock_close(sk); | |
999 | ||
093facf3 VD |
1000 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
1001 | !(current->flags & PF_EXITING)) { | |
1da177e4 LT |
1002 | lock_sock(sk); |
1003 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
1004 | release_sock(sk); | |
1005 | } | |
1006 | ||
1007 | sock_orphan(sk); | |
1008 | sco_sock_kill(sk); | |
1009 | return err; | |
1010 | } | |
1011 | ||
1da177e4 LT |
1012 | static void sco_conn_ready(struct sco_conn *conn) |
1013 | { | |
735cbc47 AE |
1014 | struct sock *parent; |
1015 | struct sock *sk = conn->sk; | |
1da177e4 LT |
1016 | |
1017 | BT_DBG("conn %p", conn); | |
1018 | ||
735cbc47 | 1019 | if (sk) { |
1da177e4 LT |
1020 | sco_sock_clear_timer(sk); |
1021 | bh_lock_sock(sk); | |
1022 | sk->sk_state = BT_CONNECTED; | |
1023 | sk->sk_state_change(sk); | |
1024 | bh_unlock_sock(sk); | |
1025 | } else { | |
40528088 AG |
1026 | sco_conn_lock(conn); |
1027 | ||
041987cf | 1028 | parent = sco_get_sock_listen(&conn->hcon->src); |
40528088 AG |
1029 | if (!parent) { |
1030 | sco_conn_unlock(conn); | |
1031 | return; | |
1032 | } | |
1da177e4 LT |
1033 | |
1034 | bh_lock_sock(parent); | |
1035 | ||
b9dbdbc1 | 1036 | sk = sco_sock_alloc(sock_net(parent), NULL, |
11aa9c28 | 1037 | BTPROTO_SCO, GFP_ATOMIC, 0); |
1da177e4 LT |
1038 | if (!sk) { |
1039 | bh_unlock_sock(parent); | |
40528088 AG |
1040 | sco_conn_unlock(conn); |
1041 | return; | |
1da177e4 LT |
1042 | } |
1043 | ||
1044 | sco_sock_init(sk, parent); | |
1045 | ||
eea96364 MH |
1046 | bacpy(&sco_pi(sk)->src, &conn->hcon->src); |
1047 | bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); | |
1da177e4 LT |
1048 | |
1049 | hci_conn_hold(conn->hcon); | |
1050 | __sco_chan_add(conn, sk, parent); | |
1051 | ||
20714bfe FD |
1052 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
1053 | sk->sk_state = BT_CONNECT2; | |
1054 | else | |
1055 | sk->sk_state = BT_CONNECTED; | |
1da177e4 LT |
1056 | |
1057 | /* Wake up parent */ | |
676d2369 | 1058 | parent->sk_data_ready(parent); |
1da177e4 LT |
1059 | |
1060 | bh_unlock_sock(parent); | |
1da177e4 | 1061 | |
40528088 AG |
1062 | sco_conn_unlock(conn); |
1063 | } | |
1da177e4 LT |
1064 | } |
1065 | ||
1066 | /* ----- SCO interface with lower layer (HCI) ----- */ | |
20714bfe | 1067 | int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4 | 1068 | { |
fc5fef61 | 1069 | struct sock *sk; |
71aeeaa1 MH |
1070 | int lm = 0; |
1071 | ||
6ed93dc6 | 1072 | BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4 | 1073 | |
71aeeaa1 MH |
1074 | /* Find listening sockets */ |
1075 | read_lock(&sco_sk_list.lock); | |
b67bfe0d | 1076 | sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1 MH |
1077 | if (sk->sk_state != BT_LISTEN) |
1078 | continue; | |
1079 | ||
eea96364 MH |
1080 | if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || |
1081 | !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { | |
71aeeaa1 | 1082 | lm |= HCI_LM_ACCEPT; |
20714bfe FD |
1083 | |
1084 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) | |
1085 | *flags |= HCI_PROTO_DEFER; | |
71aeeaa1 MH |
1086 | break; |
1087 | } | |
1088 | } | |
1089 | read_unlock(&sco_sk_list.lock); | |
1090 | ||
1091 | return lm; | |
1da177e4 LT |
1092 | } |
1093 | ||
539c496d | 1094 | static void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4 | 1095 | { |
539c496d JH |
1096 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1097 | return; | |
1098 | ||
6ed93dc6 | 1099 | BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status); |
539c496d | 1100 | |
1da177e4 LT |
1101 | if (!status) { |
1102 | struct sco_conn *conn; | |
1103 | ||
519e42b3 | 1104 | conn = sco_conn_add(hcon); |
1da177e4 LT |
1105 | if (conn) |
1106 | sco_conn_ready(conn); | |
8e87d142 | 1107 | } else |
e175072f | 1108 | sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4 LT |
1109 | } |
1110 | ||
3a6d576b | 1111 | static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4 | 1112 | { |
3a6d576b JH |
1113 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1114 | return; | |
1115 | ||
1da177e4 LT |
1116 | BT_DBG("hcon %p reason %d", hcon, reason); |
1117 | ||
e175072f | 1118 | sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4 LT |
1119 | } |
1120 | ||
9b4c3336 | 1121 | void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4 LT |
1122 | { |
1123 | struct sco_conn *conn = hcon->sco_data; | |
1124 | ||
1125 | if (!conn) | |
1126 | goto drop; | |
1127 | ||
1128 | BT_DBG("conn %p len %d", conn, skb->len); | |
1129 | ||
1130 | if (skb->len) { | |
1131 | sco_recv_frame(conn, skb); | |
9b4c3336 | 1132 | return; |
1da177e4 LT |
1133 | } |
1134 | ||
1135 | drop: | |
8e87d142 | 1136 | kfree_skb(skb); |
1da177e4 LT |
1137 | } |
1138 | ||
539c496d JH |
1139 | static struct hci_cb sco_cb = { |
1140 | .name = "SCO", | |
1141 | .connect_cfm = sco_connect_cfm, | |
3a6d576b | 1142 | .disconn_cfm = sco_disconn_cfm, |
539c496d JH |
1143 | }; |
1144 | ||
aef7d97c | 1145 | static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1146 | { |
1147 | struct sock *sk; | |
1da177e4 | 1148 | |
ee65d19e | 1149 | read_lock(&sco_sk_list.lock); |
1da177e4 | 1150 | |
b67bfe0d | 1151 | sk_for_each(sk, &sco_sk_list.head) { |
eea96364 MH |
1152 | seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src, |
1153 | &sco_pi(sk)->dst, sk->sk_state); | |
be9d1227 | 1154 | } |
1da177e4 | 1155 | |
ee65d19e | 1156 | read_unlock(&sco_sk_list.lock); |
1da177e4 | 1157 | |
aef7d97c | 1158 | return 0; |
1da177e4 LT |
1159 | } |
1160 | ||
aef7d97c MH |
1161 | static int sco_debugfs_open(struct inode *inode, struct file *file) |
1162 | { | |
1163 | return single_open(file, sco_debugfs_show, inode->i_private); | |
1164 | } | |
1165 | ||
1166 | static const struct file_operations sco_debugfs_fops = { | |
1167 | .open = sco_debugfs_open, | |
1168 | .read = seq_read, | |
1169 | .llseek = seq_lseek, | |
1170 | .release = single_release, | |
1171 | }; | |
1172 | ||
1173 | static struct dentry *sco_debugfs; | |
1da177e4 | 1174 | |
90ddc4f0 | 1175 | static const struct proto_ops sco_sock_ops = { |
1da177e4 LT |
1176 | .family = PF_BLUETOOTH, |
1177 | .owner = THIS_MODULE, | |
1178 | .release = sco_sock_release, | |
1179 | .bind = sco_sock_bind, | |
1180 | .connect = sco_sock_connect, | |
1181 | .listen = sco_sock_listen, | |
1182 | .accept = sco_sock_accept, | |
1183 | .getname = sco_sock_getname, | |
1184 | .sendmsg = sco_sock_sendmsg, | |
20714bfe | 1185 | .recvmsg = sco_sock_recvmsg, |
1da177e4 | 1186 | .poll = bt_sock_poll, |
3241ad82 | 1187 | .ioctl = bt_sock_ioctl, |
1da177e4 LT |
1188 | .mmap = sock_no_mmap, |
1189 | .socketpair = sock_no_socketpair, | |
fd0b3ff7 | 1190 | .shutdown = sco_sock_shutdown, |
1da177e4 LT |
1191 | .setsockopt = sco_sock_setsockopt, |
1192 | .getsockopt = sco_sock_getsockopt | |
1193 | }; | |
1194 | ||
ec1b4cf7 | 1195 | static const struct net_proto_family sco_sock_family_ops = { |
1da177e4 LT |
1196 | .family = PF_BLUETOOTH, |
1197 | .owner = THIS_MODULE, | |
1198 | .create = sco_sock_create, | |
1199 | }; | |
1200 | ||
64274518 | 1201 | int __init sco_init(void) |
1da177e4 LT |
1202 | { |
1203 | int err; | |
1204 | ||
15762fa7 MH |
1205 | BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr)); |
1206 | ||
1da177e4 LT |
1207 | err = proto_register(&sco_proto, 0); |
1208 | if (err < 0) | |
1209 | return err; | |
1210 | ||
1211 | err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); | |
1212 | if (err < 0) { | |
1213 | BT_ERR("SCO socket registration failed"); | |
1214 | goto error; | |
1215 | } | |
1216 | ||
b0316615 | 1217 | err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212 MY |
1218 | if (err < 0) { |
1219 | BT_ERR("Failed to create SCO proc file"); | |
1220 | bt_sock_unregister(BTPROTO_SCO); | |
1221 | goto error; | |
1222 | } | |
1223 | ||
1da177e4 LT |
1224 | BT_INFO("SCO socket layer initialized"); |
1225 | ||
539c496d JH |
1226 | hci_register_cb(&sco_cb); |
1227 | ||
1120e4bf MH |
1228 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1229 | return 0; | |
1230 | ||
1231 | sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, | |
1232 | NULL, &sco_debugfs_fops); | |
1233 | ||
1da177e4 LT |
1234 | return 0; |
1235 | ||
1236 | error: | |
1237 | proto_unregister(&sco_proto); | |
1238 | return err; | |
1239 | } | |
1240 | ||
0402d9f2 | 1241 | void sco_exit(void) |
1da177e4 | 1242 | { |
de9b9212 MY |
1243 | bt_procfs_cleanup(&init_net, "sco"); |
1244 | ||
aef7d97c | 1245 | debugfs_remove(sco_debugfs); |
1da177e4 | 1246 | |
539c496d JH |
1247 | hci_unregister_cb(&sco_cb); |
1248 | ||
5e9d7f86 | 1249 | bt_sock_unregister(BTPROTO_SCO); |
1da177e4 | 1250 | |
1da177e4 LT |
1251 | proto_unregister(&sco_proto); |
1252 | } | |
1253 | ||
7cb127d5 MH |
1254 | module_param(disable_esco, bool, 0644); |
1255 | MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |