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> | |
174cd4b1 | 30 | #include <linux/sched/signal.h> |
1da177e4 LT |
31 | |
32 | #include <net/bluetooth/bluetooth.h> | |
33 | #include <net/bluetooth/hci_core.h> | |
34 | #include <net/bluetooth/sco.h> | |
35 | ||
eb939922 | 36 | static bool disable_esco; |
1da177e4 | 37 | |
90ddc4f0 | 38 | static const struct proto_ops sco_sock_ops; |
1da177e4 LT |
39 | |
40 | static struct bt_sock_list sco_sk_list = { | |
d5fb2962 | 41 | .lock = __RW_LOCK_UNLOCKED(sco_sk_list.lock) |
1da177e4 LT |
42 | }; |
43 | ||
fc8f525a MH |
44 | /* ---- SCO connections ---- */ |
45 | struct sco_conn { | |
46 | struct hci_conn *hcon; | |
47 | ||
48 | spinlock_t lock; | |
49 | struct sock *sk; | |
50 | ||
ba316be1 DCZX |
51 | struct delayed_work timeout_work; |
52 | ||
fc8f525a MH |
53 | unsigned int mtu; |
54 | }; | |
55 | ||
0f90d320 MY |
56 | #define sco_conn_lock(c) spin_lock(&c->lock) |
57 | #define sco_conn_unlock(c) spin_unlock(&c->lock) | |
fc8f525a | 58 | |
1da177e4 LT |
59 | static void sco_sock_close(struct sock *sk); |
60 | static void sco_sock_kill(struct sock *sk); | |
61 | ||
2a0dccb3 MH |
62 | /* ----- SCO socket info ----- */ |
63 | #define sco_pi(sk) ((struct sco_pinfo *) sk) | |
64 | ||
65 | struct sco_pinfo { | |
66 | struct bt_sock bt; | |
67 | bdaddr_t src; | |
68 | bdaddr_t dst; | |
69 | __u32 flags; | |
70 | __u16 setting; | |
f6873401 | 71 | struct bt_codec codec; |
2a0dccb3 MH |
72 | struct sco_conn *conn; |
73 | }; | |
74 | ||
1da177e4 | 75 | /* ---- SCO timers ---- */ |
068d69e5 MH |
76 | #define SCO_CONN_TIMEOUT (HZ * 40) |
77 | #define SCO_DISCONN_TIMEOUT (HZ * 2) | |
78 | ||
ba316be1 | 79 | static void sco_sock_timeout(struct work_struct *work) |
1da177e4 | 80 | { |
ba316be1 DCZX |
81 | struct sco_conn *conn = container_of(work, struct sco_conn, |
82 | timeout_work.work); | |
83 | struct sock *sk; | |
84 | ||
85 | sco_conn_lock(conn); | |
86 | sk = conn->sk; | |
87 | if (sk) | |
88 | sock_hold(sk); | |
89 | sco_conn_unlock(conn); | |
90 | ||
91 | if (!sk) | |
92 | return; | |
1da177e4 LT |
93 | |
94 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
95 | ||
27c24fda | 96 | lock_sock(sk); |
1da177e4 LT |
97 | sk->sk_err = ETIMEDOUT; |
98 | sk->sk_state_change(sk); | |
27c24fda | 99 | release_sock(sk); |
1da177e4 LT |
100 | sock_put(sk); |
101 | } | |
102 | ||
103 | static void sco_sock_set_timer(struct sock *sk, long timeout) | |
104 | { | |
ba316be1 DCZX |
105 | if (!sco_pi(sk)->conn) |
106 | return; | |
107 | ||
1da177e4 | 108 | BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout); |
ba316be1 DCZX |
109 | cancel_delayed_work(&sco_pi(sk)->conn->timeout_work); |
110 | schedule_delayed_work(&sco_pi(sk)->conn->timeout_work, timeout); | |
1da177e4 LT |
111 | } |
112 | ||
113 | static void sco_sock_clear_timer(struct sock *sk) | |
114 | { | |
ba316be1 DCZX |
115 | if (!sco_pi(sk)->conn) |
116 | return; | |
117 | ||
1da177e4 | 118 | BT_DBG("sock %p state %d", sk, sk->sk_state); |
ba316be1 | 119 | cancel_delayed_work(&sco_pi(sk)->conn->timeout_work); |
1da177e4 LT |
120 | } |
121 | ||
1da177e4 | 122 | /* ---- SCO connections ---- */ |
519e42b3 | 123 | static struct sco_conn *sco_conn_add(struct hci_conn *hcon) |
1da177e4 LT |
124 | { |
125 | struct hci_dev *hdev = hcon->hdev; | |
25ea6db0 | 126 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 | 127 | |
3dcaa192 PV |
128 | if (conn) { |
129 | if (!conn->hcon) | |
130 | conn->hcon = hcon; | |
1da177e4 | 131 | return conn; |
3dcaa192 | 132 | } |
1da177e4 | 133 | |
c10cc5a9 | 134 | conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL); |
25ea6db0 | 135 | if (!conn) |
1da177e4 | 136 | return NULL; |
1da177e4 LT |
137 | |
138 | spin_lock_init(&conn->lock); | |
49d8a560 | 139 | INIT_DELAYED_WORK(&conn->timeout_work, sco_sock_timeout); |
1da177e4 LT |
140 | |
141 | hcon->sco_data = conn; | |
142 | conn->hcon = hcon; | |
143 | ||
1da177e4 LT |
144 | if (hdev->sco_mtu > 0) |
145 | conn->mtu = hdev->sco_mtu; | |
146 | else | |
147 | conn->mtu = 60; | |
148 | ||
149 | BT_DBG("hcon %p conn %p", hcon, conn); | |
25ea6db0 | 150 | |
1da177e4 LT |
151 | return conn; |
152 | } | |
153 | ||
e03ab519 MH |
154 | /* Delete channel. |
155 | * Must be called on the locked socket. */ | |
156 | static void sco_chan_del(struct sock *sk, int err) | |
157 | { | |
158 | struct sco_conn *conn; | |
159 | ||
160 | conn = sco_pi(sk)->conn; | |
161 | ||
162 | BT_DBG("sk %p, conn %p, err %d", sk, conn, err); | |
163 | ||
164 | if (conn) { | |
165 | sco_conn_lock(conn); | |
166 | conn->sk = NULL; | |
167 | sco_pi(sk)->conn = NULL; | |
168 | sco_conn_unlock(conn); | |
169 | ||
170 | if (conn->hcon) | |
171 | hci_conn_drop(conn->hcon); | |
172 | } | |
173 | ||
174 | sk->sk_state = BT_CLOSED; | |
175 | sk->sk_err = err; | |
176 | sk->sk_state_change(sk); | |
177 | ||
178 | sock_set_flag(sk, SOCK_ZAPPED); | |
179 | } | |
180 | ||
df945360 | 181 | static void sco_conn_del(struct hci_conn *hcon, int err) |
1da177e4 | 182 | { |
735cbc47 | 183 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 LT |
184 | struct sock *sk; |
185 | ||
735cbc47 | 186 | if (!conn) |
df945360 | 187 | return; |
1da177e4 LT |
188 | |
189 | BT_DBG("hcon %p conn %p, err %d", hcon, conn, err); | |
190 | ||
191 | /* Kill socket */ | |
eb5a4de8 MH |
192 | sco_conn_lock(conn); |
193 | sk = conn->sk; | |
f4712fa9 DCZX |
194 | if (sk) |
195 | sock_hold(sk); | |
eb5a4de8 MH |
196 | sco_conn_unlock(conn); |
197 | ||
735cbc47 | 198 | if (sk) { |
27c24fda | 199 | lock_sock(sk); |
1da177e4 LT |
200 | sco_sock_clear_timer(sk); |
201 | sco_chan_del(sk, err); | |
27c24fda | 202 | release_sock(sk); |
75e34f5c | 203 | sock_put(sk); |
1da177e4 LT |
204 | } |
205 | ||
49d8a560 DCZX |
206 | /* Ensure no more work items will run before freeing conn. */ |
207 | cancel_delayed_work_sync(&conn->timeout_work); | |
208 | ||
1da177e4 LT |
209 | hcon->sco_data = NULL; |
210 | kfree(conn); | |
1da177e4 LT |
211 | } |
212 | ||
c4297e8f MH |
213 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, |
214 | struct sock *parent) | |
015b01cb MH |
215 | { |
216 | BT_DBG("conn %p", conn); | |
217 | ||
218 | sco_pi(sk)->conn = conn; | |
219 | conn->sk = sk; | |
220 | ||
221 | if (parent) | |
c4f5627f | 222 | bt_accept_enqueue(parent, sk, true); |
015b01cb MH |
223 | } |
224 | ||
6039aa73 GP |
225 | static int sco_chan_add(struct sco_conn *conn, struct sock *sk, |
226 | struct sock *parent) | |
1da177e4 LT |
227 | { |
228 | int err = 0; | |
229 | ||
230 | sco_conn_lock(conn); | |
b9dbdbc1 | 231 | if (conn->sk) |
1da177e4 | 232 | err = -EBUSY; |
b9dbdbc1 | 233 | else |
1da177e4 | 234 | __sco_chan_add(conn, sk, parent); |
b9dbdbc1 | 235 | |
1da177e4 LT |
236 | sco_conn_unlock(conn); |
237 | return err; | |
238 | } | |
239 | ||
9a8ec9e8 | 240 | static int sco_connect(struct sock *sk) |
1da177e4 | 241 | { |
1da177e4 LT |
242 | struct sco_conn *conn; |
243 | struct hci_conn *hcon; | |
9a8ec9e8 | 244 | struct hci_dev *hdev; |
b6a0dc82 | 245 | int err, type; |
1da177e4 | 246 | |
eea96364 | 247 | BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst); |
1da177e4 | 248 | |
9a8ec9e8 LAD |
249 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR); |
250 | if (!hdev) | |
251 | return -EHOSTUNREACH; | |
252 | ||
253 | hci_dev_lock(hdev); | |
254 | ||
7cb127d5 MH |
255 | if (lmp_esco_capable(hdev) && !disable_esco) |
256 | type = ESCO_LINK; | |
257 | else | |
258 | type = SCO_LINK; | |
b6a0dc82 | 259 | |
79dc0087 | 260 | if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT && |
9a8ec9e8 LAD |
261 | (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) { |
262 | err = -EOPNOTSUPP; | |
263 | goto unlock; | |
264 | } | |
79dc0087 | 265 | |
eea96364 | 266 | hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst, |
b2af264a | 267 | sco_pi(sk)->setting, &sco_pi(sk)->codec); |
9a8ec9e8 LAD |
268 | if (IS_ERR(hcon)) { |
269 | err = PTR_ERR(hcon); | |
270 | goto unlock; | |
271 | } | |
272 | ||
519e42b3 | 273 | conn = sco_conn_add(hcon); |
1da177e4 | 274 | if (!conn) { |
76a68ba0 | 275 | hci_conn_drop(hcon); |
3dcaa192 PV |
276 | err = -ENOMEM; |
277 | goto unlock; | |
1da177e4 LT |
278 | } |
279 | ||
9a8ec9e8 LAD |
280 | lock_sock(sk); |
281 | ||
3dcaa192 PV |
282 | err = sco_chan_add(conn, sk, NULL); |
283 | if (err) { | |
284 | release_sock(sk); | |
285 | goto unlock; | |
286 | } | |
287 | ||
9a8ec9e8 LAD |
288 | /* Update source addr of the socket */ |
289 | bacpy(&sco_pi(sk)->src, &hcon->src); | |
290 | ||
1da177e4 LT |
291 | if (hcon->state == BT_CONNECTED) { |
292 | sco_sock_clear_timer(sk); | |
293 | sk->sk_state = BT_CONNECTED; | |
294 | } else { | |
295 | sk->sk_state = BT_CONNECT; | |
296 | sco_sock_set_timer(sk, sk->sk_sndtimeo); | |
297 | } | |
b6a0dc82 | 298 | |
9a8ec9e8 LAD |
299 | release_sock(sk); |
300 | ||
9a8ec9e8 LAD |
301 | unlock: |
302 | hci_dev_unlock(hdev); | |
303 | hci_dev_put(hdev); | |
1da177e4 LT |
304 | return err; |
305 | } | |
306 | ||
0771cbb3 | 307 | static int sco_send_frame(struct sock *sk, struct sk_buff *skb) |
1da177e4 LT |
308 | { |
309 | struct sco_conn *conn = sco_pi(sk)->conn; | |
037ce005 | 310 | int len = skb->len; |
1da177e4 LT |
311 | |
312 | /* Check outgoing MTU */ | |
037ce005 | 313 | if (len > conn->mtu) |
1da177e4 LT |
314 | return -EINVAL; |
315 | ||
037ce005 | 316 | BT_DBG("sk %p len %d", sk, len); |
1da177e4 | 317 | |
0d861d8b | 318 | hci_send_sco(conn->hcon, skb); |
1da177e4 | 319 | |
037ce005 | 320 | return len; |
1da177e4 LT |
321 | } |
322 | ||
6039aa73 | 323 | static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb) |
1da177e4 | 324 | { |
eb5a4de8 MH |
325 | struct sock *sk; |
326 | ||
327 | sco_conn_lock(conn); | |
328 | sk = conn->sk; | |
329 | sco_conn_unlock(conn); | |
1da177e4 LT |
330 | |
331 | if (!sk) | |
332 | goto drop; | |
333 | ||
79dbeafe | 334 | BT_DBG("sk %p len %u", sk, skb->len); |
1da177e4 LT |
335 | |
336 | if (sk->sk_state != BT_CONNECTED) | |
337 | goto drop; | |
338 | ||
339 | if (!sock_queue_rcv_skb(sk, skb)) | |
340 | return; | |
341 | ||
342 | drop: | |
343 | kfree_skb(skb); | |
1da177e4 LT |
344 | } |
345 | ||
346 | /* -------- Socket interface ---------- */ | |
fb334059 | 347 | static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba) |
1da177e4 | 348 | { |
fb334059 MH |
349 | struct sock *sk; |
350 | ||
b67bfe0d | 351 | sk_for_each(sk, &sco_sk_list.head) { |
fb334059 MH |
352 | if (sk->sk_state != BT_LISTEN) |
353 | continue; | |
1da177e4 | 354 | |
eea96364 | 355 | if (!bacmp(&sco_pi(sk)->src, ba)) |
fb334059 MH |
356 | return sk; |
357 | } | |
358 | ||
359 | return NULL; | |
1da177e4 LT |
360 | } |
361 | ||
362 | /* Find socket listening on source bdaddr. | |
363 | * Returns closest match. | |
364 | */ | |
365 | static struct sock *sco_get_sock_listen(bdaddr_t *src) | |
366 | { | |
367 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 LT |
368 | |
369 | read_lock(&sco_sk_list.lock); | |
370 | ||
b67bfe0d | 371 | sk_for_each(sk, &sco_sk_list.head) { |
1da177e4 LT |
372 | if (sk->sk_state != BT_LISTEN) |
373 | continue; | |
374 | ||
375 | /* Exact match. */ | |
eea96364 | 376 | if (!bacmp(&sco_pi(sk)->src, src)) |
1da177e4 LT |
377 | break; |
378 | ||
379 | /* Closest match */ | |
eea96364 | 380 | if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY)) |
1da177e4 LT |
381 | sk1 = sk; |
382 | } | |
383 | ||
384 | read_unlock(&sco_sk_list.lock); | |
385 | ||
b67bfe0d | 386 | return sk ? sk : sk1; |
1da177e4 LT |
387 | } |
388 | ||
389 | static void sco_sock_destruct(struct sock *sk) | |
390 | { | |
391 | BT_DBG("sk %p", sk); | |
392 | ||
393 | skb_queue_purge(&sk->sk_receive_queue); | |
394 | skb_queue_purge(&sk->sk_write_queue); | |
395 | } | |
396 | ||
397 | static void sco_sock_cleanup_listen(struct sock *parent) | |
398 | { | |
399 | struct sock *sk; | |
400 | ||
401 | BT_DBG("parent %p", parent); | |
402 | ||
403 | /* Close not yet accepted channels */ | |
404 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
405 | sco_sock_close(sk); | |
406 | sco_sock_kill(sk); | |
407 | } | |
408 | ||
409 | parent->sk_state = BT_CLOSED; | |
410 | sock_set_flag(parent, SOCK_ZAPPED); | |
411 | } | |
412 | ||
413 | /* Kill socket (only if zapped and orphan) | |
414 | * Must be called on unlocked socket. | |
415 | */ | |
416 | static void sco_sock_kill(struct sock *sk) | |
417 | { | |
e1dee2c1 | 418 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) |
1da177e4 LT |
419 | return; |
420 | ||
421 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
422 | ||
423 | /* Kill poor orphan */ | |
424 | bt_sock_unlink(&sco_sk_list, sk); | |
425 | sock_set_flag(sk, SOCK_DEAD); | |
426 | sock_put(sk); | |
427 | } | |
428 | ||
fd0b3ff7 | 429 | static void __sco_sock_close(struct sock *sk) |
1da177e4 | 430 | { |
fd0b3ff7 | 431 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
1da177e4 LT |
432 | |
433 | switch (sk->sk_state) { | |
434 | case BT_LISTEN: | |
435 | sco_sock_cleanup_listen(sk); | |
436 | break; | |
437 | ||
438 | case BT_CONNECTED: | |
439 | case BT_CONFIG: | |
b7e98b51 | 440 | if (sco_pi(sk)->conn->hcon) { |
4a77708b LAD |
441 | sk->sk_state = BT_DISCONN; |
442 | sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); | |
435c5133 | 443 | sco_conn_lock(sco_pi(sk)->conn); |
76a68ba0 | 444 | hci_conn_drop(sco_pi(sk)->conn->hcon); |
4a77708b | 445 | sco_pi(sk)->conn->hcon = NULL; |
435c5133 | 446 | sco_conn_unlock(sco_pi(sk)->conn); |
4a77708b LAD |
447 | } else |
448 | sco_chan_del(sk, ECONNRESET); | |
449 | break; | |
450 | ||
eb20ff9c | 451 | case BT_CONNECT2: |
1da177e4 LT |
452 | case BT_CONNECT: |
453 | case BT_DISCONN: | |
454 | sco_chan_del(sk, ECONNRESET); | |
455 | break; | |
456 | ||
457 | default: | |
458 | sock_set_flag(sk, SOCK_ZAPPED); | |
459 | break; | |
3ff50b79 | 460 | } |
f6873401 | 461 | |
fd0b3ff7 | 462 | } |
1da177e4 | 463 | |
fd0b3ff7 MH |
464 | /* Must be called on unlocked socket. */ |
465 | static void sco_sock_close(struct sock *sk) | |
466 | { | |
fd0b3ff7 | 467 | lock_sock(sk); |
3f2c89fb | 468 | sco_sock_clear_timer(sk); |
fd0b3ff7 | 469 | __sco_sock_close(sk); |
1da177e4 | 470 | release_sock(sk); |
1da177e4 LT |
471 | } |
472 | ||
473 | static void sco_sock_init(struct sock *sk, struct sock *parent) | |
474 | { | |
475 | BT_DBG("sk %p", sk); | |
476 | ||
6230c9b4 | 477 | if (parent) { |
1da177e4 | 478 | sk->sk_type = parent->sk_type; |
20714bfe | 479 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
6230c9b4 PM |
480 | security_sk_clone(parent, sk); |
481 | } | |
1da177e4 LT |
482 | } |
483 | ||
484 | static struct proto sco_proto = { | |
485 | .name = "SCO", | |
486 | .owner = THIS_MODULE, | |
487 | .obj_size = sizeof(struct sco_pinfo) | |
488 | }; | |
489 | ||
c4297e8f MH |
490 | static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, |
491 | int proto, gfp_t prio, int kern) | |
1da177e4 LT |
492 | { |
493 | struct sock *sk; | |
494 | ||
6bfa273e | 495 | sk = bt_sock_alloc(net, sock, &sco_proto, proto, prio, kern); |
1da177e4 LT |
496 | if (!sk) |
497 | return NULL; | |
498 | ||
1da177e4 LT |
499 | sk->sk_destruct = sco_sock_destruct; |
500 | sk->sk_sndtimeo = SCO_CONN_TIMEOUT; | |
501 | ||
ad10b1a4 | 502 | sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
f6873401 K |
503 | sco_pi(sk)->codec.id = BT_CODEC_CVSD; |
504 | sco_pi(sk)->codec.cid = 0xffff; | |
505 | sco_pi(sk)->codec.vid = 0xffff; | |
506 | sco_pi(sk)->codec.data_path = 0x00; | |
ad10b1a4 | 507 | |
1da177e4 LT |
508 | bt_sock_link(&sco_sk_list, sk); |
509 | return sk; | |
510 | } | |
511 | ||
3f378b68 EP |
512 | static int sco_sock_create(struct net *net, struct socket *sock, int protocol, |
513 | int kern) | |
1da177e4 LT |
514 | { |
515 | struct sock *sk; | |
516 | ||
517 | BT_DBG("sock %p", sock); | |
518 | ||
519 | sock->state = SS_UNCONNECTED; | |
520 | ||
521 | if (sock->type != SOCK_SEQPACKET) | |
522 | return -ESOCKTNOSUPPORT; | |
523 | ||
524 | sock->ops = &sco_sock_ops; | |
525 | ||
11aa9c28 | 526 | sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); |
74da626a | 527 | if (!sk) |
1da177e4 LT |
528 | return -ENOMEM; |
529 | ||
530 | sco_sock_init(sk, NULL); | |
531 | return 0; | |
532 | } | |
533 | ||
c4297e8f MH |
534 | static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, |
535 | int addr_len) | |
1da177e4 LT |
536 | { |
537 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
538 | struct sock *sk = sock->sk; | |
1da177e4 LT |
539 | int err = 0; |
540 | ||
d2ecfa76 MJ |
541 | if (!addr || addr_len < sizeof(struct sockaddr_sco) || |
542 | addr->sa_family != AF_BLUETOOTH) | |
5233252f DM |
543 | return -EINVAL; |
544 | ||
bd7d46dd TH |
545 | BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
546 | ||
1da177e4 LT |
547 | lock_sock(sk); |
548 | ||
549 | if (sk->sk_state != BT_OPEN) { | |
550 | err = -EBADFD; | |
551 | goto done; | |
552 | } | |
553 | ||
8ed21f7e MH |
554 | if (sk->sk_type != SOCK_SEQPACKET) { |
555 | err = -EINVAL; | |
556 | goto done; | |
1da177e4 LT |
557 | } |
558 | ||
eea96364 | 559 | bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
8ed21f7e MH |
560 | |
561 | sk->sk_state = BT_BOUND; | |
1da177e4 LT |
562 | |
563 | done: | |
564 | release_sock(sk); | |
565 | return err; | |
566 | } | |
567 | ||
568 | static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
569 | { | |
570 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
571 | struct sock *sk = sock->sk; | |
92f185c8 | 572 | int err; |
1da177e4 LT |
573 | |
574 | BT_DBG("sk %p", sk); | |
575 | ||
6503d961 CG |
576 | if (alen < sizeof(struct sockaddr_sco) || |
577 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
578 | return -EINVAL; |
579 | ||
9a8ec9e8 LAD |
580 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) |
581 | return -EBADFD; | |
1da177e4 | 582 | |
9a8ec9e8 | 583 | if (sk->sk_type != SOCK_SEQPACKET) |
7aa1e7d1 | 584 | err = -EINVAL; |
734bc5ff | 585 | |
9a8ec9e8 | 586 | lock_sock(sk); |
1da177e4 | 587 | /* Set destination address and psm */ |
eea96364 | 588 | bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
9a8ec9e8 | 589 | release_sock(sk); |
1da177e4 | 590 | |
9a8ec9e8 | 591 | err = sco_connect(sk); |
735cbc47 | 592 | if (err) |
9a8ec9e8 LAD |
593 | return err; |
594 | ||
595 | lock_sock(sk); | |
1da177e4 | 596 | |
8e87d142 | 597 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99 | 598 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4 | 599 | |
1da177e4 LT |
600 | release_sock(sk); |
601 | return err; | |
602 | } | |
603 | ||
604 | static int sco_sock_listen(struct socket *sock, int backlog) | |
605 | { | |
606 | struct sock *sk = sock->sk; | |
eea96364 | 607 | bdaddr_t *src = &sco_pi(sk)->src; |
1da177e4 LT |
608 | int err = 0; |
609 | ||
610 | BT_DBG("sk %p backlog %d", sk, backlog); | |
611 | ||
612 | lock_sock(sk); | |
613 | ||
7d5d775a | 614 | if (sk->sk_state != BT_BOUND) { |
1da177e4 LT |
615 | err = -EBADFD; |
616 | goto done; | |
617 | } | |
618 | ||
7d5d775a MH |
619 | if (sk->sk_type != SOCK_SEQPACKET) { |
620 | err = -EINVAL; | |
621 | goto done; | |
622 | } | |
623 | ||
fb334059 MH |
624 | write_lock(&sco_sk_list.lock); |
625 | ||
626 | if (__sco_get_sock_listen_by_addr(src)) { | |
627 | err = -EADDRINUSE; | |
628 | goto unlock; | |
629 | } | |
630 | ||
1da177e4 LT |
631 | sk->sk_max_ack_backlog = backlog; |
632 | sk->sk_ack_backlog = 0; | |
fb334059 | 633 | |
1da177e4 LT |
634 | sk->sk_state = BT_LISTEN; |
635 | ||
fb334059 MH |
636 | unlock: |
637 | write_unlock(&sco_sk_list.lock); | |
638 | ||
1da177e4 LT |
639 | done: |
640 | release_sock(sk); | |
641 | return err; | |
642 | } | |
643 | ||
c4297e8f | 644 | static int sco_sock_accept(struct socket *sock, struct socket *newsock, |
cdfbabfb | 645 | int flags, bool kern) |
1da177e4 | 646 | { |
dfb2fae7 | 647 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4 LT |
648 | struct sock *sk = sock->sk, *ch; |
649 | long timeo; | |
650 | int err = 0; | |
651 | ||
652 | lock_sock(sk); | |
653 | ||
1da177e4 LT |
654 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
655 | ||
656 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
657 | ||
658 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 659 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3c | 660 | while (1) { |
552b0d3c PH |
661 | if (sk->sk_state != BT_LISTEN) { |
662 | err = -EBADFD; | |
1da177e4 LT |
663 | break; |
664 | } | |
665 | ||
552b0d3c PH |
666 | ch = bt_accept_dequeue(sk, newsock); |
667 | if (ch) | |
668 | break; | |
1da177e4 | 669 | |
552b0d3c PH |
670 | if (!timeo) { |
671 | err = -EAGAIN; | |
1da177e4 LT |
672 | break; |
673 | } | |
674 | ||
675 | if (signal_pending(current)) { | |
676 | err = sock_intr_errno(timeo); | |
677 | break; | |
678 | } | |
552b0d3c PH |
679 | |
680 | release_sock(sk); | |
dfb2fae7 PH |
681 | |
682 | timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); | |
552b0d3c | 683 | lock_sock(sk); |
1da177e4 | 684 | } |
aa395145 | 685 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
686 | |
687 | if (err) | |
688 | goto done; | |
689 | ||
690 | newsock->state = SS_CONNECTED; | |
691 | ||
692 | BT_DBG("new socket %p", ch); | |
693 | ||
694 | done: | |
695 | release_sock(sk); | |
696 | return err; | |
697 | } | |
698 | ||
c4297e8f | 699 | static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, |
9b2c45d4 | 700 | int peer) |
1da177e4 LT |
701 | { |
702 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
703 | struct sock *sk = sock->sk; | |
704 | ||
705 | BT_DBG("sock %p, sk %p", sock, sk); | |
706 | ||
707 | addr->sa_family = AF_BLUETOOTH; | |
1da177e4 LT |
708 | |
709 | if (peer) | |
eea96364 | 710 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
1da177e4 | 711 | else |
eea96364 | 712 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
1da177e4 | 713 | |
9b2c45d4 | 714 | return sizeof(struct sockaddr_sco); |
1da177e4 LT |
715 | } |
716 | ||
1b784140 YX |
717 | static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
718 | size_t len) | |
1da177e4 LT |
719 | { |
720 | struct sock *sk = sock->sk; | |
0771cbb3 | 721 | struct sk_buff *skb; |
b9dbdbc1 | 722 | int err; |
1da177e4 LT |
723 | |
724 | BT_DBG("sock %p, sk %p", sock, sk); | |
725 | ||
c1cbe4b7 BL |
726 | err = sock_error(sk); |
727 | if (err) | |
728 | return err; | |
1da177e4 LT |
729 | |
730 | if (msg->msg_flags & MSG_OOB) | |
731 | return -EOPNOTSUPP; | |
732 | ||
0771cbb3 | 733 | skb = bt_skb_sendmsg(sk, msg, len, len, 0, 0); |
266191aa | 734 | if (IS_ERR(skb)) |
0771cbb3 | 735 | return PTR_ERR(skb); |
99c23da0 | 736 | |
1da177e4 LT |
737 | lock_sock(sk); |
738 | ||
739 | if (sk->sk_state == BT_CONNECTED) | |
0771cbb3 | 740 | err = sco_send_frame(sk, skb); |
1da177e4 LT |
741 | else |
742 | err = -ENOTCONN; | |
743 | ||
744 | release_sock(sk); | |
037ce005 LAD |
745 | |
746 | if (err < 0) | |
0771cbb3 | 747 | kfree_skb(skb); |
1da177e4 LT |
748 | return err; |
749 | } | |
750 | ||
2f69a82a | 751 | static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
fa5513be FD |
752 | { |
753 | struct hci_dev *hdev = conn->hdev; | |
754 | ||
755 | BT_DBG("conn %p", conn); | |
756 | ||
757 | conn->state = BT_CONFIG; | |
758 | ||
759 | if (!lmp_esco_capable(hdev)) { | |
760 | struct hci_cp_accept_conn_req cp; | |
761 | ||
762 | bacpy(&cp.bdaddr, &conn->dst); | |
33f24048 | 763 | cp.role = 0x00; /* Ignored */ |
fa5513be FD |
764 | |
765 | hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); | |
766 | } else { | |
767 | struct hci_cp_accept_sync_conn_req cp; | |
768 | ||
769 | bacpy(&cp.bdaddr, &conn->dst); | |
770 | cp.pkt_type = cpu_to_le16(conn->pkt_type); | |
771 | ||
dcf4adbf JP |
772 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
773 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
2f69a82a FD |
774 | cp.content_format = cpu_to_le16(setting); |
775 | ||
776 | switch (setting & SCO_AIRMODE_MASK) { | |
777 | case SCO_AIRMODE_TRANSP: | |
778 | if (conn->pkt_type & ESCO_2EV3) | |
dcf4adbf | 779 | cp.max_latency = cpu_to_le16(0x0008); |
2f69a82a | 780 | else |
dcf4adbf | 781 | cp.max_latency = cpu_to_le16(0x000D); |
2f69a82a FD |
782 | cp.retrans_effort = 0x02; |
783 | break; | |
784 | case SCO_AIRMODE_CVSD: | |
dcf4adbf | 785 | cp.max_latency = cpu_to_le16(0xffff); |
2f69a82a FD |
786 | cp.retrans_effort = 0xff; |
787 | break; | |
59da0b38 DC |
788 | default: |
789 | /* use CVSD settings as fallback */ | |
790 | cp.max_latency = cpu_to_le16(0xffff); | |
791 | cp.retrans_effort = 0xff; | |
792 | break; | |
2f69a82a | 793 | } |
fa5513be FD |
794 | |
795 | hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, | |
796 | sizeof(cp), &cp); | |
797 | } | |
798 | } | |
799 | ||
1b784140 YX |
800 | static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
801 | size_t len, int flags) | |
20714bfe FD |
802 | { |
803 | struct sock *sk = sock->sk; | |
804 | struct sco_pinfo *pi = sco_pi(sk); | |
805 | ||
806 | lock_sock(sk); | |
807 | ||
808 | if (sk->sk_state == BT_CONNECT2 && | |
809 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { | |
2f69a82a | 810 | sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
20714bfe FD |
811 | sk->sk_state = BT_CONFIG; |
812 | ||
813 | release_sock(sk); | |
814 | return 0; | |
815 | } | |
816 | ||
817 | release_sock(sk); | |
818 | ||
1b784140 | 819 | return bt_sock_recvmsg(sock, msg, len, flags); |
20714bfe FD |
820 | } |
821 | ||
c4297e8f | 822 | static int sco_sock_setsockopt(struct socket *sock, int level, int optname, |
a7b75c5a | 823 | sockptr_t optval, unsigned int optlen) |
1da177e4 LT |
824 | { |
825 | struct sock *sk = sock->sk; | |
ad10b1a4 FD |
826 | int len, err = 0; |
827 | struct bt_voice voice; | |
b96e9c67 | 828 | u32 opt; |
f6873401 K |
829 | struct bt_codecs *codecs; |
830 | struct hci_dev *hdev; | |
831 | __u8 buffer[255]; | |
1da177e4 LT |
832 | |
833 | BT_DBG("sk %p", sk); | |
834 | ||
835 | lock_sock(sk); | |
836 | ||
837 | switch (optname) { | |
b96e9c67 FD |
838 | |
839 | case BT_DEFER_SETUP: | |
840 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
841 | err = -EINVAL; | |
842 | break; | |
843 | } | |
844 | ||
a7b75c5a | 845 | if (copy_from_sockptr(&opt, optval, sizeof(u32))) { |
b96e9c67 FD |
846 | err = -EFAULT; |
847 | break; | |
848 | } | |
849 | ||
850 | if (opt) | |
851 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
852 | else | |
853 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
854 | break; | |
855 | ||
ad10b1a4 FD |
856 | case BT_VOICE: |
857 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
858 | sk->sk_state != BT_CONNECT2) { | |
859 | err = -EINVAL; | |
860 | break; | |
861 | } | |
862 | ||
863 | voice.setting = sco_pi(sk)->setting; | |
864 | ||
865 | len = min_t(unsigned int, sizeof(voice), optlen); | |
a7b75c5a | 866 | if (copy_from_sockptr(&voice, optval, len)) { |
ad10b1a4 FD |
867 | err = -EFAULT; |
868 | break; | |
869 | } | |
870 | ||
871 | /* Explicitly check for these values */ | |
872 | if (voice.setting != BT_VOICE_TRANSPARENT && | |
873 | voice.setting != BT_VOICE_CVSD_16BIT) { | |
874 | err = -EINVAL; | |
875 | break; | |
876 | } | |
877 | ||
878 | sco_pi(sk)->setting = voice.setting; | |
b2af264a K |
879 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, |
880 | BDADDR_BREDR); | |
881 | if (!hdev) { | |
882 | err = -EBADFD; | |
883 | break; | |
884 | } | |
05abad85 | 885 | if (enhanced_sync_conn_capable(hdev) && |
b2af264a K |
886 | voice.setting == BT_VOICE_TRANSPARENT) |
887 | sco_pi(sk)->codec.id = BT_CODEC_TRANSPARENT; | |
888 | hci_dev_put(hdev); | |
ad10b1a4 FD |
889 | break; |
890 | ||
00398e1d | 891 | case BT_PKT_STATUS: |
83a33b24 | 892 | if (copy_from_sockptr(&opt, optval, sizeof(u32))) { |
00398e1d AM |
893 | err = -EFAULT; |
894 | break; | |
895 | } | |
896 | ||
897 | if (opt) | |
3f19ffb2 | 898 | set_bit(BT_SK_PKT_STATUS, &bt_sk(sk)->flags); |
00398e1d | 899 | else |
3f19ffb2 | 900 | clear_bit(BT_SK_PKT_STATUS, &bt_sk(sk)->flags); |
00398e1d AM |
901 | break; |
902 | ||
f6873401 K |
903 | case BT_CODEC: |
904 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
905 | sk->sk_state != BT_CONNECT2) { | |
906 | err = -EINVAL; | |
907 | break; | |
908 | } | |
909 | ||
910 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, | |
911 | BDADDR_BREDR); | |
912 | if (!hdev) { | |
913 | err = -EBADFD; | |
914 | break; | |
915 | } | |
916 | ||
917 | if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) { | |
918 | hci_dev_put(hdev); | |
919 | err = -EOPNOTSUPP; | |
920 | break; | |
921 | } | |
922 | ||
923 | if (!hdev->get_data_path_id) { | |
924 | hci_dev_put(hdev); | |
925 | err = -EOPNOTSUPP; | |
926 | break; | |
927 | } | |
928 | ||
929 | if (optlen < sizeof(struct bt_codecs) || | |
930 | optlen > sizeof(buffer)) { | |
931 | hci_dev_put(hdev); | |
932 | err = -EINVAL; | |
933 | break; | |
934 | } | |
935 | ||
936 | if (copy_from_sockptr(buffer, optval, optlen)) { | |
937 | hci_dev_put(hdev); | |
938 | err = -EFAULT; | |
939 | break; | |
940 | } | |
941 | ||
942 | codecs = (void *)buffer; | |
943 | ||
944 | if (codecs->num_codecs > 1) { | |
945 | hci_dev_put(hdev); | |
946 | err = -EINVAL; | |
947 | break; | |
948 | } | |
949 | ||
950 | sco_pi(sk)->codec = codecs->codecs[0]; | |
951 | hci_dev_put(hdev); | |
952 | break; | |
953 | ||
1da177e4 LT |
954 | default: |
955 | err = -ENOPROTOOPT; | |
956 | break; | |
957 | } | |
958 | ||
959 | release_sock(sk); | |
960 | return err; | |
961 | } | |
962 | ||
c4297e8f MH |
963 | static int sco_sock_getsockopt_old(struct socket *sock, int optname, |
964 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
965 | { |
966 | struct sock *sk = sock->sk; | |
967 | struct sco_options opts; | |
968 | struct sco_conninfo cinfo; | |
8e87d142 | 969 | int len, err = 0; |
1da177e4 LT |
970 | |
971 | BT_DBG("sk %p", sk); | |
972 | ||
973 | if (get_user(len, optlen)) | |
974 | return -EFAULT; | |
975 | ||
976 | lock_sock(sk); | |
977 | ||
978 | switch (optname) { | |
979 | case SCO_OPTIONS: | |
9d225d22 JH |
980 | if (sk->sk_state != BT_CONNECTED && |
981 | !(sk->sk_state == BT_CONNECT2 && | |
982 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
983 | err = -ENOTCONN; |
984 | break; | |
985 | } | |
986 | ||
987 | opts.mtu = sco_pi(sk)->conn->mtu; | |
988 | ||
79dbeafe | 989 | BT_DBG("mtu %u", opts.mtu); |
1da177e4 LT |
990 | |
991 | len = min_t(unsigned int, len, sizeof(opts)); | |
992 | if (copy_to_user(optval, (char *)&opts, len)) | |
993 | err = -EFAULT; | |
994 | ||
995 | break; | |
996 | ||
997 | case SCO_CONNINFO: | |
9d225d22 JH |
998 | if (sk->sk_state != BT_CONNECTED && |
999 | !(sk->sk_state == BT_CONNECT2 && | |
1000 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
1001 | err = -ENOTCONN; |
1002 | break; | |
1003 | } | |
1004 | ||
c4c896e1 | 1005 | memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4 LT |
1006 | cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; |
1007 | memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); | |
1008 | ||
1009 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
1010 | if (copy_to_user(optval, (char *)&cinfo, len)) | |
1011 | err = -EFAULT; | |
1012 | ||
1013 | break; | |
1014 | ||
1015 | default: | |
1016 | err = -ENOPROTOOPT; | |
1017 | break; | |
1018 | } | |
1019 | ||
1020 | release_sock(sk); | |
1021 | return err; | |
1022 | } | |
1023 | ||
c4297e8f MH |
1024 | static int sco_sock_getsockopt(struct socket *sock, int level, int optname, |
1025 | char __user *optval, int __user *optlen) | |
d58daf42 MH |
1026 | { |
1027 | struct sock *sk = sock->sk; | |
1028 | int len, err = 0; | |
ad10b1a4 | 1029 | struct bt_voice voice; |
eab2404b | 1030 | u32 phys; |
248733e8 K |
1031 | int buf_len; |
1032 | struct codec_list *c; | |
1033 | u8 num_codecs, i, __user *ptr; | |
1034 | struct hci_dev *hdev; | |
1035 | struct hci_codec_caps *caps; | |
1036 | struct bt_codec codec; | |
d58daf42 MH |
1037 | |
1038 | BT_DBG("sk %p", sk); | |
1039 | ||
1040 | if (level == SOL_SCO) | |
1041 | return sco_sock_getsockopt_old(sock, optname, optval, optlen); | |
1042 | ||
1043 | if (get_user(len, optlen)) | |
1044 | return -EFAULT; | |
1045 | ||
1046 | lock_sock(sk); | |
1047 | ||
1048 | switch (optname) { | |
b96e9c67 FD |
1049 | |
1050 | case BT_DEFER_SETUP: | |
1051 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
1052 | err = -EINVAL; | |
1053 | break; | |
1054 | } | |
1055 | ||
1056 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), | |
c4297e8f | 1057 | (u32 __user *)optval)) |
b96e9c67 FD |
1058 | err = -EFAULT; |
1059 | ||
1060 | break; | |
1061 | ||
ad10b1a4 FD |
1062 | case BT_VOICE: |
1063 | voice.setting = sco_pi(sk)->setting; | |
1064 | ||
1065 | len = min_t(unsigned int, len, sizeof(voice)); | |
1066 | if (copy_to_user(optval, (char *)&voice, len)) | |
1067 | err = -EFAULT; | |
1068 | ||
1069 | break; | |
1070 | ||
eab2404b | 1071 | case BT_PHY: |
a2a8b0b4 | 1072 | if (sk->sk_state != BT_CONNECTED) { |
eab2404b LAD |
1073 | err = -ENOTCONN; |
1074 | break; | |
1075 | } | |
1076 | ||
1077 | phys = hci_conn_get_phy(sco_pi(sk)->conn->hcon); | |
1078 | ||
1079 | if (put_user(phys, (u32 __user *) optval)) | |
1080 | err = -EFAULT; | |
1081 | break; | |
1082 | ||
00398e1d | 1083 | case BT_PKT_STATUS: |
3f19ffb2 LAD |
1084 | if (put_user(test_bit(BT_SK_PKT_STATUS, &bt_sk(sk)->flags), |
1085 | (int __user *)optval)) | |
00398e1d AM |
1086 | err = -EFAULT; |
1087 | break; | |
1088 | ||
0fc1a726 JH |
1089 | case BT_SNDMTU: |
1090 | case BT_RCVMTU: | |
f6b8c6b5 WY |
1091 | if (sk->sk_state != BT_CONNECTED) { |
1092 | err = -ENOTCONN; | |
1093 | break; | |
1094 | } | |
1095 | ||
0fc1a726 JH |
1096 | if (put_user(sco_pi(sk)->conn->mtu, (u32 __user *)optval)) |
1097 | err = -EFAULT; | |
1098 | break; | |
1099 | ||
248733e8 K |
1100 | case BT_CODEC: |
1101 | num_codecs = 0; | |
1102 | buf_len = 0; | |
1103 | ||
1104 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR); | |
1105 | if (!hdev) { | |
1106 | err = -EBADFD; | |
1107 | break; | |
1108 | } | |
1109 | ||
1110 | if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) { | |
1111 | hci_dev_put(hdev); | |
1112 | err = -EOPNOTSUPP; | |
1113 | break; | |
1114 | } | |
1115 | ||
1116 | if (!hdev->get_data_path_id) { | |
1117 | hci_dev_put(hdev); | |
1118 | err = -EOPNOTSUPP; | |
1119 | break; | |
1120 | } | |
1121 | ||
975abc0c LAD |
1122 | release_sock(sk); |
1123 | ||
248733e8 K |
1124 | /* find total buffer size required to copy codec + caps */ |
1125 | hci_dev_lock(hdev); | |
1126 | list_for_each_entry(c, &hdev->local_codecs, list) { | |
1127 | if (c->transport != HCI_TRANSPORT_SCO_ESCO) | |
1128 | continue; | |
1129 | num_codecs++; | |
1130 | for (i = 0, caps = c->caps; i < c->num_caps; i++) { | |
1131 | buf_len += 1 + caps->len; | |
1132 | caps = (void *)&caps->data[caps->len]; | |
1133 | } | |
1134 | buf_len += sizeof(struct bt_codec); | |
1135 | } | |
1136 | hci_dev_unlock(hdev); | |
1137 | ||
1138 | buf_len += sizeof(struct bt_codecs); | |
1139 | if (buf_len > len) { | |
1140 | hci_dev_put(hdev); | |
975abc0c | 1141 | return -ENOBUFS; |
248733e8 K |
1142 | } |
1143 | ptr = optval; | |
1144 | ||
1145 | if (put_user(num_codecs, ptr)) { | |
1146 | hci_dev_put(hdev); | |
975abc0c | 1147 | return -EFAULT; |
248733e8 K |
1148 | } |
1149 | ptr += sizeof(num_codecs); | |
1150 | ||
1151 | /* Iterate all the codecs supported over SCO and populate | |
1152 | * codec data | |
1153 | */ | |
1154 | hci_dev_lock(hdev); | |
1155 | list_for_each_entry(c, &hdev->local_codecs, list) { | |
1156 | if (c->transport != HCI_TRANSPORT_SCO_ESCO) | |
1157 | continue; | |
1158 | ||
1159 | codec.id = c->id; | |
1160 | codec.cid = c->cid; | |
1161 | codec.vid = c->vid; | |
1162 | err = hdev->get_data_path_id(hdev, &codec.data_path); | |
1163 | if (err < 0) | |
1164 | break; | |
1165 | codec.num_caps = c->num_caps; | |
1166 | if (copy_to_user(ptr, &codec, sizeof(codec))) { | |
1167 | err = -EFAULT; | |
1168 | break; | |
1169 | } | |
1170 | ptr += sizeof(codec); | |
1171 | ||
1172 | /* find codec capabilities data length */ | |
1173 | len = 0; | |
1174 | for (i = 0, caps = c->caps; i < c->num_caps; i++) { | |
1175 | len += 1 + caps->len; | |
1176 | caps = (void *)&caps->data[caps->len]; | |
1177 | } | |
1178 | ||
1179 | /* copy codec capabilities data */ | |
1180 | if (len && copy_to_user(ptr, c->caps, len)) { | |
1181 | err = -EFAULT; | |
1182 | break; | |
1183 | } | |
1184 | ptr += len; | |
1185 | } | |
1186 | ||
248733e8 K |
1187 | hci_dev_unlock(hdev); |
1188 | hci_dev_put(hdev); | |
1189 | ||
975abc0c LAD |
1190 | lock_sock(sk); |
1191 | ||
1192 | if (!err && put_user(buf_len, optlen)) | |
1193 | err = -EFAULT; | |
1194 | ||
248733e8 K |
1195 | break; |
1196 | ||
d58daf42 MH |
1197 | default: |
1198 | err = -ENOPROTOOPT; | |
1199 | break; | |
1200 | } | |
1201 | ||
1202 | release_sock(sk); | |
1203 | return err; | |
1204 | } | |
1205 | ||
fd0b3ff7 MH |
1206 | static int sco_sock_shutdown(struct socket *sock, int how) |
1207 | { | |
1208 | struct sock *sk = sock->sk; | |
1209 | int err = 0; | |
1210 | ||
1211 | BT_DBG("sock %p, sk %p", sock, sk); | |
1212 | ||
1213 | if (!sk) | |
1214 | return 0; | |
1215 | ||
1da5537e | 1216 | sock_hold(sk); |
fd0b3ff7 | 1217 | lock_sock(sk); |
1da5537e | 1218 | |
fd0b3ff7 MH |
1219 | if (!sk->sk_shutdown) { |
1220 | sk->sk_shutdown = SHUTDOWN_MASK; | |
1221 | sco_sock_clear_timer(sk); | |
1222 | __sco_sock_close(sk); | |
1223 | ||
093facf3 VD |
1224 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
1225 | !(current->flags & PF_EXITING)) | |
fd0b3ff7 | 1226 | err = bt_sock_wait_state(sk, BT_CLOSED, |
be7c2b99 | 1227 | sk->sk_lingertime); |
fd0b3ff7 | 1228 | } |
1da5537e | 1229 | |
fd0b3ff7 | 1230 | release_sock(sk); |
1da5537e KP |
1231 | sock_put(sk); |
1232 | ||
fd0b3ff7 MH |
1233 | return err; |
1234 | } | |
1235 | ||
1da177e4 LT |
1236 | static int sco_sock_release(struct socket *sock) |
1237 | { | |
1238 | struct sock *sk = sock->sk; | |
1239 | int err = 0; | |
1240 | ||
1241 | BT_DBG("sock %p, sk %p", sock, sk); | |
1242 | ||
1243 | if (!sk) | |
1244 | return 0; | |
1245 | ||
1246 | sco_sock_close(sk); | |
1247 | ||
bc1fb82a | 1248 | if (sock_flag(sk, SOCK_LINGER) && READ_ONCE(sk->sk_lingertime) && |
093facf3 | 1249 | !(current->flags & PF_EXITING)) { |
1da177e4 LT |
1250 | lock_sock(sk); |
1251 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
1252 | release_sock(sk); | |
1253 | } | |
1254 | ||
1255 | sock_orphan(sk); | |
1256 | sco_sock_kill(sk); | |
1257 | return err; | |
1258 | } | |
1259 | ||
1da177e4 LT |
1260 | static void sco_conn_ready(struct sco_conn *conn) |
1261 | { | |
735cbc47 AE |
1262 | struct sock *parent; |
1263 | struct sock *sk = conn->sk; | |
1da177e4 LT |
1264 | |
1265 | BT_DBG("conn %p", conn); | |
1266 | ||
735cbc47 | 1267 | if (sk) { |
27c24fda | 1268 | lock_sock(sk); |
3f2c89fb | 1269 | sco_sock_clear_timer(sk); |
1da177e4 LT |
1270 | sk->sk_state = BT_CONNECTED; |
1271 | sk->sk_state_change(sk); | |
27c24fda | 1272 | release_sock(sk); |
1da177e4 | 1273 | } else { |
40528088 AG |
1274 | sco_conn_lock(conn); |
1275 | ||
2c501cdd KP |
1276 | if (!conn->hcon) { |
1277 | sco_conn_unlock(conn); | |
1278 | return; | |
1279 | } | |
1280 | ||
041987cf | 1281 | parent = sco_get_sock_listen(&conn->hcon->src); |
40528088 AG |
1282 | if (!parent) { |
1283 | sco_conn_unlock(conn); | |
1284 | return; | |
1285 | } | |
1da177e4 | 1286 | |
27c24fda | 1287 | lock_sock(parent); |
1da177e4 | 1288 | |
b9dbdbc1 | 1289 | sk = sco_sock_alloc(sock_net(parent), NULL, |
11aa9c28 | 1290 | BTPROTO_SCO, GFP_ATOMIC, 0); |
1da177e4 | 1291 | if (!sk) { |
27c24fda | 1292 | release_sock(parent); |
40528088 AG |
1293 | sco_conn_unlock(conn); |
1294 | return; | |
1da177e4 LT |
1295 | } |
1296 | ||
1297 | sco_sock_init(sk, parent); | |
1298 | ||
eea96364 MH |
1299 | bacpy(&sco_pi(sk)->src, &conn->hcon->src); |
1300 | bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); | |
1da177e4 LT |
1301 | |
1302 | hci_conn_hold(conn->hcon); | |
1303 | __sco_chan_add(conn, sk, parent); | |
1304 | ||
20714bfe FD |
1305 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
1306 | sk->sk_state = BT_CONNECT2; | |
1307 | else | |
1308 | sk->sk_state = BT_CONNECTED; | |
1da177e4 LT |
1309 | |
1310 | /* Wake up parent */ | |
676d2369 | 1311 | parent->sk_data_ready(parent); |
1da177e4 | 1312 | |
27c24fda | 1313 | release_sock(parent); |
1da177e4 | 1314 | |
40528088 AG |
1315 | sco_conn_unlock(conn); |
1316 | } | |
1da177e4 LT |
1317 | } |
1318 | ||
1319 | /* ----- SCO interface with lower layer (HCI) ----- */ | |
20714bfe | 1320 | int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4 | 1321 | { |
fc5fef61 | 1322 | struct sock *sk; |
71aeeaa1 MH |
1323 | int lm = 0; |
1324 | ||
6ed93dc6 | 1325 | BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4 | 1326 | |
71aeeaa1 MH |
1327 | /* Find listening sockets */ |
1328 | read_lock(&sco_sk_list.lock); | |
b67bfe0d | 1329 | sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1 MH |
1330 | if (sk->sk_state != BT_LISTEN) |
1331 | continue; | |
1332 | ||
eea96364 MH |
1333 | if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || |
1334 | !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { | |
71aeeaa1 | 1335 | lm |= HCI_LM_ACCEPT; |
20714bfe FD |
1336 | |
1337 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) | |
1338 | *flags |= HCI_PROTO_DEFER; | |
71aeeaa1 MH |
1339 | break; |
1340 | } | |
1341 | } | |
1342 | read_unlock(&sco_sk_list.lock); | |
1343 | ||
1344 | return lm; | |
1da177e4 LT |
1345 | } |
1346 | ||
539c496d | 1347 | static void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4 | 1348 | { |
539c496d JH |
1349 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1350 | return; | |
1351 | ||
79dbeafe | 1352 | BT_DBG("hcon %p bdaddr %pMR status %u", hcon, &hcon->dst, status); |
539c496d | 1353 | |
1da177e4 LT |
1354 | if (!status) { |
1355 | struct sco_conn *conn; | |
1356 | ||
519e42b3 | 1357 | conn = sco_conn_add(hcon); |
1da177e4 LT |
1358 | if (conn) |
1359 | sco_conn_ready(conn); | |
8e87d142 | 1360 | } else |
e175072f | 1361 | sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4 LT |
1362 | } |
1363 | ||
3a6d576b | 1364 | static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4 | 1365 | { |
3a6d576b JH |
1366 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1367 | return; | |
1368 | ||
1da177e4 LT |
1369 | BT_DBG("hcon %p reason %d", hcon, reason); |
1370 | ||
e175072f | 1371 | sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4 LT |
1372 | } |
1373 | ||
9b4c3336 | 1374 | void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4 LT |
1375 | { |
1376 | struct sco_conn *conn = hcon->sco_data; | |
1377 | ||
1378 | if (!conn) | |
1379 | goto drop; | |
1380 | ||
79dbeafe | 1381 | BT_DBG("conn %p len %u", conn, skb->len); |
1da177e4 LT |
1382 | |
1383 | if (skb->len) { | |
1384 | sco_recv_frame(conn, skb); | |
9b4c3336 | 1385 | return; |
1da177e4 LT |
1386 | } |
1387 | ||
1388 | drop: | |
8e87d142 | 1389 | kfree_skb(skb); |
1da177e4 LT |
1390 | } |
1391 | ||
539c496d JH |
1392 | static struct hci_cb sco_cb = { |
1393 | .name = "SCO", | |
1394 | .connect_cfm = sco_connect_cfm, | |
3a6d576b | 1395 | .disconn_cfm = sco_disconn_cfm, |
539c496d JH |
1396 | }; |
1397 | ||
aef7d97c | 1398 | static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1399 | { |
1400 | struct sock *sk; | |
1da177e4 | 1401 | |
ee65d19e | 1402 | read_lock(&sco_sk_list.lock); |
1da177e4 | 1403 | |
b67bfe0d | 1404 | sk_for_each(sk, &sco_sk_list.head) { |
eea96364 MH |
1405 | seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src, |
1406 | &sco_pi(sk)->dst, sk->sk_state); | |
be9d1227 | 1407 | } |
1da177e4 | 1408 | |
ee65d19e | 1409 | read_unlock(&sco_sk_list.lock); |
1da177e4 | 1410 | |
aef7d97c | 1411 | return 0; |
1da177e4 LT |
1412 | } |
1413 | ||
8e2924e3 | 1414 | DEFINE_SHOW_ATTRIBUTE(sco_debugfs); |
aef7d97c MH |
1415 | |
1416 | static struct dentry *sco_debugfs; | |
1da177e4 | 1417 | |
90ddc4f0 | 1418 | static const struct proto_ops sco_sock_ops = { |
1da177e4 LT |
1419 | .family = PF_BLUETOOTH, |
1420 | .owner = THIS_MODULE, | |
1421 | .release = sco_sock_release, | |
1422 | .bind = sco_sock_bind, | |
1423 | .connect = sco_sock_connect, | |
1424 | .listen = sco_sock_listen, | |
1425 | .accept = sco_sock_accept, | |
1426 | .getname = sco_sock_getname, | |
1427 | .sendmsg = sco_sock_sendmsg, | |
20714bfe | 1428 | .recvmsg = sco_sock_recvmsg, |
a11e1d43 | 1429 | .poll = bt_sock_poll, |
3241ad82 | 1430 | .ioctl = bt_sock_ioctl, |
c7cbdbf2 | 1431 | .gettstamp = sock_gettstamp, |
1da177e4 LT |
1432 | .mmap = sock_no_mmap, |
1433 | .socketpair = sock_no_socketpair, | |
fd0b3ff7 | 1434 | .shutdown = sco_sock_shutdown, |
1da177e4 LT |
1435 | .setsockopt = sco_sock_setsockopt, |
1436 | .getsockopt = sco_sock_getsockopt | |
1437 | }; | |
1438 | ||
ec1b4cf7 | 1439 | static const struct net_proto_family sco_sock_family_ops = { |
1da177e4 LT |
1440 | .family = PF_BLUETOOTH, |
1441 | .owner = THIS_MODULE, | |
1442 | .create = sco_sock_create, | |
1443 | }; | |
1444 | ||
64274518 | 1445 | int __init sco_init(void) |
1da177e4 LT |
1446 | { |
1447 | int err; | |
1448 | ||
15762fa7 MH |
1449 | BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr)); |
1450 | ||
1da177e4 LT |
1451 | err = proto_register(&sco_proto, 0); |
1452 | if (err < 0) | |
1453 | return err; | |
1454 | ||
1455 | err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); | |
1456 | if (err < 0) { | |
1457 | BT_ERR("SCO socket registration failed"); | |
1458 | goto error; | |
1459 | } | |
1460 | ||
b0316615 | 1461 | err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212 MY |
1462 | if (err < 0) { |
1463 | BT_ERR("Failed to create SCO proc file"); | |
1464 | bt_sock_unregister(BTPROTO_SCO); | |
1465 | goto error; | |
1466 | } | |
1467 | ||
1da177e4 LT |
1468 | BT_INFO("SCO socket layer initialized"); |
1469 | ||
539c496d JH |
1470 | hci_register_cb(&sco_cb); |
1471 | ||
1120e4bf MH |
1472 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1473 | return 0; | |
1474 | ||
1475 | sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, | |
1476 | NULL, &sco_debugfs_fops); | |
1477 | ||
1da177e4 LT |
1478 | return 0; |
1479 | ||
1480 | error: | |
1481 | proto_unregister(&sco_proto); | |
1482 | return err; | |
1483 | } | |
1484 | ||
0402d9f2 | 1485 | void sco_exit(void) |
1da177e4 | 1486 | { |
de9b9212 MY |
1487 | bt_procfs_cleanup(&init_net, "sco"); |
1488 | ||
aef7d97c | 1489 | debugfs_remove(sco_debugfs); |
1da177e4 | 1490 | |
539c496d JH |
1491 | hci_unregister_cb(&sco_cb); |
1492 | ||
5e9d7f86 | 1493 | bt_sock_unregister(BTPROTO_SCO); |
1da177e4 | 1494 | |
1da177e4 LT |
1495 | proto_unregister(&sco_proto); |
1496 | } | |
1497 | ||
7cb127d5 MH |
1498 | module_param(disable_esco, bool, 0644); |
1499 | MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |