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; | |
00398e1d | 71 | __u8 cmsg_mask; |
f6873401 | 72 | struct bt_codec codec; |
2a0dccb3 MH |
73 | struct sco_conn *conn; |
74 | }; | |
75 | ||
1da177e4 | 76 | /* ---- SCO timers ---- */ |
068d69e5 MH |
77 | #define SCO_CONN_TIMEOUT (HZ * 40) |
78 | #define SCO_DISCONN_TIMEOUT (HZ * 2) | |
79 | ||
ba316be1 | 80 | static void sco_sock_timeout(struct work_struct *work) |
1da177e4 | 81 | { |
ba316be1 DCZX |
82 | struct sco_conn *conn = container_of(work, struct sco_conn, |
83 | timeout_work.work); | |
84 | struct sock *sk; | |
85 | ||
86 | sco_conn_lock(conn); | |
87 | sk = conn->sk; | |
88 | if (sk) | |
89 | sock_hold(sk); | |
90 | sco_conn_unlock(conn); | |
91 | ||
92 | if (!sk) | |
93 | return; | |
1da177e4 LT |
94 | |
95 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
96 | ||
27c24fda | 97 | lock_sock(sk); |
1da177e4 LT |
98 | sk->sk_err = ETIMEDOUT; |
99 | sk->sk_state_change(sk); | |
27c24fda | 100 | release_sock(sk); |
1da177e4 LT |
101 | sock_put(sk); |
102 | } | |
103 | ||
104 | static void sco_sock_set_timer(struct sock *sk, long timeout) | |
105 | { | |
ba316be1 DCZX |
106 | if (!sco_pi(sk)->conn) |
107 | return; | |
108 | ||
1da177e4 | 109 | BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout); |
ba316be1 DCZX |
110 | cancel_delayed_work(&sco_pi(sk)->conn->timeout_work); |
111 | schedule_delayed_work(&sco_pi(sk)->conn->timeout_work, timeout); | |
1da177e4 LT |
112 | } |
113 | ||
114 | static void sco_sock_clear_timer(struct sock *sk) | |
115 | { | |
ba316be1 DCZX |
116 | if (!sco_pi(sk)->conn) |
117 | return; | |
118 | ||
1da177e4 | 119 | BT_DBG("sock %p state %d", sk, sk->sk_state); |
ba316be1 | 120 | cancel_delayed_work(&sco_pi(sk)->conn->timeout_work); |
1da177e4 LT |
121 | } |
122 | ||
1da177e4 | 123 | /* ---- SCO connections ---- */ |
519e42b3 | 124 | static struct sco_conn *sco_conn_add(struct hci_conn *hcon) |
1da177e4 LT |
125 | { |
126 | struct hci_dev *hdev = hcon->hdev; | |
25ea6db0 | 127 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 | 128 | |
519e42b3 | 129 | if (conn) |
1da177e4 LT |
130 | return conn; |
131 | ||
c10cc5a9 | 132 | conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL); |
25ea6db0 | 133 | if (!conn) |
1da177e4 | 134 | return NULL; |
1da177e4 LT |
135 | |
136 | spin_lock_init(&conn->lock); | |
49d8a560 | 137 | INIT_DELAYED_WORK(&conn->timeout_work, sco_sock_timeout); |
1da177e4 LT |
138 | |
139 | hcon->sco_data = conn; | |
140 | conn->hcon = hcon; | |
141 | ||
1da177e4 LT |
142 | if (hdev->sco_mtu > 0) |
143 | conn->mtu = hdev->sco_mtu; | |
144 | else | |
145 | conn->mtu = 60; | |
146 | ||
147 | BT_DBG("hcon %p conn %p", hcon, conn); | |
25ea6db0 | 148 | |
1da177e4 LT |
149 | return conn; |
150 | } | |
151 | ||
e03ab519 MH |
152 | /* Delete channel. |
153 | * Must be called on the locked socket. */ | |
154 | static void sco_chan_del(struct sock *sk, int err) | |
155 | { | |
156 | struct sco_conn *conn; | |
157 | ||
158 | conn = sco_pi(sk)->conn; | |
159 | ||
160 | BT_DBG("sk %p, conn %p, err %d", sk, conn, err); | |
161 | ||
162 | if (conn) { | |
163 | sco_conn_lock(conn); | |
164 | conn->sk = NULL; | |
165 | sco_pi(sk)->conn = NULL; | |
166 | sco_conn_unlock(conn); | |
167 | ||
168 | if (conn->hcon) | |
169 | hci_conn_drop(conn->hcon); | |
170 | } | |
171 | ||
172 | sk->sk_state = BT_CLOSED; | |
173 | sk->sk_err = err; | |
174 | sk->sk_state_change(sk); | |
175 | ||
176 | sock_set_flag(sk, SOCK_ZAPPED); | |
177 | } | |
178 | ||
df945360 | 179 | static void sco_conn_del(struct hci_conn *hcon, int err) |
1da177e4 | 180 | { |
735cbc47 | 181 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 LT |
182 | struct sock *sk; |
183 | ||
735cbc47 | 184 | if (!conn) |
df945360 | 185 | return; |
1da177e4 LT |
186 | |
187 | BT_DBG("hcon %p conn %p, err %d", hcon, conn, err); | |
188 | ||
189 | /* Kill socket */ | |
eb5a4de8 MH |
190 | sco_conn_lock(conn); |
191 | sk = conn->sk; | |
f4712fa9 DCZX |
192 | if (sk) |
193 | sock_hold(sk); | |
eb5a4de8 MH |
194 | sco_conn_unlock(conn); |
195 | ||
735cbc47 | 196 | if (sk) { |
27c24fda | 197 | lock_sock(sk); |
1da177e4 LT |
198 | sco_sock_clear_timer(sk); |
199 | sco_chan_del(sk, err); | |
27c24fda | 200 | release_sock(sk); |
75e34f5c | 201 | sock_put(sk); |
1da177e4 LT |
202 | } |
203 | ||
49d8a560 DCZX |
204 | /* Ensure no more work items will run before freeing conn. */ |
205 | cancel_delayed_work_sync(&conn->timeout_work); | |
206 | ||
1da177e4 LT |
207 | hcon->sco_data = NULL; |
208 | kfree(conn); | |
1da177e4 LT |
209 | } |
210 | ||
c4297e8f MH |
211 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, |
212 | struct sock *parent) | |
015b01cb MH |
213 | { |
214 | BT_DBG("conn %p", conn); | |
215 | ||
216 | sco_pi(sk)->conn = conn; | |
217 | conn->sk = sk; | |
218 | ||
219 | if (parent) | |
c4f5627f | 220 | bt_accept_enqueue(parent, sk, true); |
015b01cb MH |
221 | } |
222 | ||
6039aa73 GP |
223 | static int sco_chan_add(struct sco_conn *conn, struct sock *sk, |
224 | struct sock *parent) | |
1da177e4 LT |
225 | { |
226 | int err = 0; | |
227 | ||
228 | sco_conn_lock(conn); | |
b9dbdbc1 | 229 | if (conn->sk) |
1da177e4 | 230 | err = -EBUSY; |
b9dbdbc1 | 231 | else |
1da177e4 | 232 | __sco_chan_add(conn, sk, parent); |
b9dbdbc1 | 233 | |
1da177e4 LT |
234 | sco_conn_unlock(conn); |
235 | return err; | |
236 | } | |
237 | ||
734bc5ff | 238 | static int sco_connect(struct hci_dev *hdev, struct sock *sk) |
1da177e4 | 239 | { |
1da177e4 LT |
240 | struct sco_conn *conn; |
241 | struct hci_conn *hcon; | |
b6a0dc82 | 242 | int err, type; |
1da177e4 | 243 | |
eea96364 | 244 | BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst); |
1da177e4 | 245 | |
7cb127d5 MH |
246 | if (lmp_esco_capable(hdev) && !disable_esco) |
247 | type = ESCO_LINK; | |
248 | else | |
249 | type = SCO_LINK; | |
b6a0dc82 | 250 | |
79dc0087 | 251 | if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT && |
734bc5ff DCZX |
252 | (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) |
253 | return -EOPNOTSUPP; | |
79dc0087 | 254 | |
eea96364 | 255 | hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst, |
b2af264a | 256 | sco_pi(sk)->setting, &sco_pi(sk)->codec); |
734bc5ff DCZX |
257 | if (IS_ERR(hcon)) |
258 | return PTR_ERR(hcon); | |
1da177e4 | 259 | |
519e42b3 | 260 | conn = sco_conn_add(hcon); |
1da177e4 | 261 | if (!conn) { |
76a68ba0 | 262 | hci_conn_drop(hcon); |
734bc5ff | 263 | return -ENOMEM; |
1da177e4 LT |
264 | } |
265 | ||
266 | /* Update source addr of the socket */ | |
eea96364 | 267 | bacpy(&sco_pi(sk)->src, &hcon->src); |
1da177e4 LT |
268 | |
269 | err = sco_chan_add(conn, sk, NULL); | |
270 | if (err) | |
734bc5ff | 271 | return err; |
1da177e4 LT |
272 | |
273 | if (hcon->state == BT_CONNECTED) { | |
274 | sco_sock_clear_timer(sk); | |
275 | sk->sk_state = BT_CONNECTED; | |
276 | } else { | |
277 | sk->sk_state = BT_CONNECT; | |
278 | sco_sock_set_timer(sk, sk->sk_sndtimeo); | |
279 | } | |
b6a0dc82 | 280 | |
1da177e4 LT |
281 | return err; |
282 | } | |
283 | ||
0771cbb3 | 284 | static int sco_send_frame(struct sock *sk, struct sk_buff *skb) |
1da177e4 LT |
285 | { |
286 | struct sco_conn *conn = sco_pi(sk)->conn; | |
037ce005 | 287 | int len = skb->len; |
1da177e4 LT |
288 | |
289 | /* Check outgoing MTU */ | |
037ce005 | 290 | if (len > conn->mtu) |
1da177e4 LT |
291 | return -EINVAL; |
292 | ||
037ce005 | 293 | BT_DBG("sk %p len %d", sk, len); |
1da177e4 | 294 | |
0d861d8b | 295 | hci_send_sco(conn->hcon, skb); |
1da177e4 | 296 | |
037ce005 | 297 | return len; |
1da177e4 LT |
298 | } |
299 | ||
6039aa73 | 300 | static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb) |
1da177e4 | 301 | { |
eb5a4de8 MH |
302 | struct sock *sk; |
303 | ||
304 | sco_conn_lock(conn); | |
305 | sk = conn->sk; | |
306 | sco_conn_unlock(conn); | |
1da177e4 LT |
307 | |
308 | if (!sk) | |
309 | goto drop; | |
310 | ||
79dbeafe | 311 | BT_DBG("sk %p len %u", sk, skb->len); |
1da177e4 LT |
312 | |
313 | if (sk->sk_state != BT_CONNECTED) | |
314 | goto drop; | |
315 | ||
316 | if (!sock_queue_rcv_skb(sk, skb)) | |
317 | return; | |
318 | ||
319 | drop: | |
320 | kfree_skb(skb); | |
1da177e4 LT |
321 | } |
322 | ||
323 | /* -------- Socket interface ---------- */ | |
fb334059 | 324 | static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba) |
1da177e4 | 325 | { |
fb334059 MH |
326 | struct sock *sk; |
327 | ||
b67bfe0d | 328 | sk_for_each(sk, &sco_sk_list.head) { |
fb334059 MH |
329 | if (sk->sk_state != BT_LISTEN) |
330 | continue; | |
1da177e4 | 331 | |
eea96364 | 332 | if (!bacmp(&sco_pi(sk)->src, ba)) |
fb334059 MH |
333 | return sk; |
334 | } | |
335 | ||
336 | return NULL; | |
1da177e4 LT |
337 | } |
338 | ||
339 | /* Find socket listening on source bdaddr. | |
340 | * Returns closest match. | |
341 | */ | |
342 | static struct sock *sco_get_sock_listen(bdaddr_t *src) | |
343 | { | |
344 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 LT |
345 | |
346 | read_lock(&sco_sk_list.lock); | |
347 | ||
b67bfe0d | 348 | sk_for_each(sk, &sco_sk_list.head) { |
1da177e4 LT |
349 | if (sk->sk_state != BT_LISTEN) |
350 | continue; | |
351 | ||
352 | /* Exact match. */ | |
eea96364 | 353 | if (!bacmp(&sco_pi(sk)->src, src)) |
1da177e4 LT |
354 | break; |
355 | ||
356 | /* Closest match */ | |
eea96364 | 357 | if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY)) |
1da177e4 LT |
358 | sk1 = sk; |
359 | } | |
360 | ||
361 | read_unlock(&sco_sk_list.lock); | |
362 | ||
b67bfe0d | 363 | return sk ? sk : sk1; |
1da177e4 LT |
364 | } |
365 | ||
366 | static void sco_sock_destruct(struct sock *sk) | |
367 | { | |
368 | BT_DBG("sk %p", sk); | |
369 | ||
370 | skb_queue_purge(&sk->sk_receive_queue); | |
371 | skb_queue_purge(&sk->sk_write_queue); | |
372 | } | |
373 | ||
374 | static void sco_sock_cleanup_listen(struct sock *parent) | |
375 | { | |
376 | struct sock *sk; | |
377 | ||
378 | BT_DBG("parent %p", parent); | |
379 | ||
380 | /* Close not yet accepted channels */ | |
381 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
382 | sco_sock_close(sk); | |
383 | sco_sock_kill(sk); | |
384 | } | |
385 | ||
386 | parent->sk_state = BT_CLOSED; | |
387 | sock_set_flag(parent, SOCK_ZAPPED); | |
388 | } | |
389 | ||
390 | /* Kill socket (only if zapped and orphan) | |
391 | * Must be called on unlocked socket. | |
392 | */ | |
393 | static void sco_sock_kill(struct sock *sk) | |
394 | { | |
e1dee2c1 | 395 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) |
1da177e4 LT |
396 | return; |
397 | ||
398 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
399 | ||
400 | /* Kill poor orphan */ | |
401 | bt_sock_unlink(&sco_sk_list, sk); | |
402 | sock_set_flag(sk, SOCK_DEAD); | |
403 | sock_put(sk); | |
404 | } | |
405 | ||
fd0b3ff7 | 406 | static void __sco_sock_close(struct sock *sk) |
1da177e4 | 407 | { |
fd0b3ff7 | 408 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
1da177e4 LT |
409 | |
410 | switch (sk->sk_state) { | |
411 | case BT_LISTEN: | |
412 | sco_sock_cleanup_listen(sk); | |
413 | break; | |
414 | ||
415 | case BT_CONNECTED: | |
416 | case BT_CONFIG: | |
b7e98b51 | 417 | if (sco_pi(sk)->conn->hcon) { |
4a77708b LAD |
418 | sk->sk_state = BT_DISCONN; |
419 | sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); | |
435c5133 | 420 | sco_conn_lock(sco_pi(sk)->conn); |
76a68ba0 | 421 | hci_conn_drop(sco_pi(sk)->conn->hcon); |
4a77708b | 422 | sco_pi(sk)->conn->hcon = NULL; |
435c5133 | 423 | sco_conn_unlock(sco_pi(sk)->conn); |
4a77708b LAD |
424 | } else |
425 | sco_chan_del(sk, ECONNRESET); | |
426 | break; | |
427 | ||
eb20ff9c | 428 | case BT_CONNECT2: |
1da177e4 LT |
429 | case BT_CONNECT: |
430 | case BT_DISCONN: | |
431 | sco_chan_del(sk, ECONNRESET); | |
432 | break; | |
433 | ||
434 | default: | |
435 | sock_set_flag(sk, SOCK_ZAPPED); | |
436 | break; | |
3ff50b79 | 437 | } |
f6873401 | 438 | |
fd0b3ff7 | 439 | } |
1da177e4 | 440 | |
fd0b3ff7 MH |
441 | /* Must be called on unlocked socket. */ |
442 | static void sco_sock_close(struct sock *sk) | |
443 | { | |
fd0b3ff7 | 444 | lock_sock(sk); |
3f2c89fb | 445 | sco_sock_clear_timer(sk); |
fd0b3ff7 | 446 | __sco_sock_close(sk); |
1da177e4 | 447 | release_sock(sk); |
1da177e4 LT |
448 | } |
449 | ||
00398e1d AM |
450 | static void sco_skb_put_cmsg(struct sk_buff *skb, struct msghdr *msg, |
451 | struct sock *sk) | |
452 | { | |
453 | if (sco_pi(sk)->cmsg_mask & SCO_CMSG_PKT_STATUS) | |
454 | put_cmsg(msg, SOL_BLUETOOTH, BT_SCM_PKT_STATUS, | |
455 | sizeof(bt_cb(skb)->sco.pkt_status), | |
456 | &bt_cb(skb)->sco.pkt_status); | |
457 | } | |
458 | ||
1da177e4 LT |
459 | static void sco_sock_init(struct sock *sk, struct sock *parent) |
460 | { | |
461 | BT_DBG("sk %p", sk); | |
462 | ||
6230c9b4 | 463 | if (parent) { |
1da177e4 | 464 | sk->sk_type = parent->sk_type; |
20714bfe | 465 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
6230c9b4 | 466 | security_sk_clone(parent, sk); |
00398e1d AM |
467 | } else { |
468 | bt_sk(sk)->skb_put_cmsg = sco_skb_put_cmsg; | |
6230c9b4 | 469 | } |
1da177e4 LT |
470 | } |
471 | ||
472 | static struct proto sco_proto = { | |
473 | .name = "SCO", | |
474 | .owner = THIS_MODULE, | |
475 | .obj_size = sizeof(struct sco_pinfo) | |
476 | }; | |
477 | ||
c4297e8f MH |
478 | static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, |
479 | int proto, gfp_t prio, int kern) | |
1da177e4 LT |
480 | { |
481 | struct sock *sk; | |
482 | ||
11aa9c28 | 483 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern); |
1da177e4 LT |
484 | if (!sk) |
485 | return NULL; | |
486 | ||
487 | sock_init_data(sock, sk); | |
488 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
489 | ||
490 | sk->sk_destruct = sco_sock_destruct; | |
491 | sk->sk_sndtimeo = SCO_CONN_TIMEOUT; | |
492 | ||
493 | sock_reset_flag(sk, SOCK_ZAPPED); | |
494 | ||
495 | sk->sk_protocol = proto; | |
496 | sk->sk_state = BT_OPEN; | |
497 | ||
ad10b1a4 | 498 | sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
f6873401 K |
499 | sco_pi(sk)->codec.id = BT_CODEC_CVSD; |
500 | sco_pi(sk)->codec.cid = 0xffff; | |
501 | sco_pi(sk)->codec.vid = 0xffff; | |
502 | sco_pi(sk)->codec.data_path = 0x00; | |
ad10b1a4 | 503 | |
1da177e4 LT |
504 | bt_sock_link(&sco_sk_list, sk); |
505 | return sk; | |
506 | } | |
507 | ||
3f378b68 EP |
508 | static int sco_sock_create(struct net *net, struct socket *sock, int protocol, |
509 | int kern) | |
1da177e4 LT |
510 | { |
511 | struct sock *sk; | |
512 | ||
513 | BT_DBG("sock %p", sock); | |
514 | ||
515 | sock->state = SS_UNCONNECTED; | |
516 | ||
517 | if (sock->type != SOCK_SEQPACKET) | |
518 | return -ESOCKTNOSUPPORT; | |
519 | ||
520 | sock->ops = &sco_sock_ops; | |
521 | ||
11aa9c28 | 522 | sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); |
74da626a | 523 | if (!sk) |
1da177e4 LT |
524 | return -ENOMEM; |
525 | ||
526 | sco_sock_init(sk, NULL); | |
527 | return 0; | |
528 | } | |
529 | ||
c4297e8f MH |
530 | static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, |
531 | int addr_len) | |
1da177e4 LT |
532 | { |
533 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
534 | struct sock *sk = sock->sk; | |
1da177e4 LT |
535 | int err = 0; |
536 | ||
d2ecfa76 MJ |
537 | if (!addr || addr_len < sizeof(struct sockaddr_sco) || |
538 | addr->sa_family != AF_BLUETOOTH) | |
5233252f DM |
539 | return -EINVAL; |
540 | ||
bd7d46dd TH |
541 | BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
542 | ||
1da177e4 LT |
543 | lock_sock(sk); |
544 | ||
545 | if (sk->sk_state != BT_OPEN) { | |
546 | err = -EBADFD; | |
547 | goto done; | |
548 | } | |
549 | ||
8ed21f7e MH |
550 | if (sk->sk_type != SOCK_SEQPACKET) { |
551 | err = -EINVAL; | |
552 | goto done; | |
1da177e4 LT |
553 | } |
554 | ||
eea96364 | 555 | bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
8ed21f7e MH |
556 | |
557 | sk->sk_state = BT_BOUND; | |
1da177e4 LT |
558 | |
559 | done: | |
560 | release_sock(sk); | |
561 | return err; | |
562 | } | |
563 | ||
564 | static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
565 | { | |
566 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
567 | struct sock *sk = sock->sk; | |
734bc5ff | 568 | struct hci_dev *hdev; |
92f185c8 | 569 | int err; |
1da177e4 LT |
570 | |
571 | BT_DBG("sk %p", sk); | |
572 | ||
6503d961 CG |
573 | if (alen < sizeof(struct sockaddr_sco) || |
574 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
575 | return -EINVAL; |
576 | ||
577 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) | |
578 | return -EBADFD; | |
579 | ||
580 | if (sk->sk_type != SOCK_SEQPACKET) | |
581 | return -EINVAL; | |
582 | ||
734bc5ff DCZX |
583 | hdev = hci_get_route(&sa->sco_bdaddr, &sco_pi(sk)->src, BDADDR_BREDR); |
584 | if (!hdev) | |
585 | return -EHOSTUNREACH; | |
586 | hci_dev_lock(hdev); | |
587 | ||
1da177e4 LT |
588 | lock_sock(sk); |
589 | ||
590 | /* Set destination address and psm */ | |
eea96364 | 591 | bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
1da177e4 | 592 | |
734bc5ff DCZX |
593 | err = sco_connect(hdev, sk); |
594 | hci_dev_unlock(hdev); | |
595 | hci_dev_put(hdev); | |
735cbc47 | 596 | if (err) |
1da177e4 LT |
597 | goto done; |
598 | ||
8e87d142 | 599 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99 | 600 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4 LT |
601 | |
602 | done: | |
603 | release_sock(sk); | |
604 | return err; | |
605 | } | |
606 | ||
607 | static int sco_sock_listen(struct socket *sock, int backlog) | |
608 | { | |
609 | struct sock *sk = sock->sk; | |
eea96364 | 610 | bdaddr_t *src = &sco_pi(sk)->src; |
1da177e4 LT |
611 | int err = 0; |
612 | ||
613 | BT_DBG("sk %p backlog %d", sk, backlog); | |
614 | ||
615 | lock_sock(sk); | |
616 | ||
7d5d775a | 617 | if (sk->sk_state != BT_BOUND) { |
1da177e4 LT |
618 | err = -EBADFD; |
619 | goto done; | |
620 | } | |
621 | ||
7d5d775a MH |
622 | if (sk->sk_type != SOCK_SEQPACKET) { |
623 | err = -EINVAL; | |
624 | goto done; | |
625 | } | |
626 | ||
fb334059 MH |
627 | write_lock(&sco_sk_list.lock); |
628 | ||
629 | if (__sco_get_sock_listen_by_addr(src)) { | |
630 | err = -EADDRINUSE; | |
631 | goto unlock; | |
632 | } | |
633 | ||
1da177e4 LT |
634 | sk->sk_max_ack_backlog = backlog; |
635 | sk->sk_ack_backlog = 0; | |
fb334059 | 636 | |
1da177e4 LT |
637 | sk->sk_state = BT_LISTEN; |
638 | ||
fb334059 MH |
639 | unlock: |
640 | write_unlock(&sco_sk_list.lock); | |
641 | ||
1da177e4 LT |
642 | done: |
643 | release_sock(sk); | |
644 | return err; | |
645 | } | |
646 | ||
c4297e8f | 647 | static int sco_sock_accept(struct socket *sock, struct socket *newsock, |
cdfbabfb | 648 | int flags, bool kern) |
1da177e4 | 649 | { |
dfb2fae7 | 650 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4 LT |
651 | struct sock *sk = sock->sk, *ch; |
652 | long timeo; | |
653 | int err = 0; | |
654 | ||
655 | lock_sock(sk); | |
656 | ||
1da177e4 LT |
657 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
658 | ||
659 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
660 | ||
661 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 662 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3c | 663 | while (1) { |
552b0d3c PH |
664 | if (sk->sk_state != BT_LISTEN) { |
665 | err = -EBADFD; | |
1da177e4 LT |
666 | break; |
667 | } | |
668 | ||
552b0d3c PH |
669 | ch = bt_accept_dequeue(sk, newsock); |
670 | if (ch) | |
671 | break; | |
1da177e4 | 672 | |
552b0d3c PH |
673 | if (!timeo) { |
674 | err = -EAGAIN; | |
1da177e4 LT |
675 | break; |
676 | } | |
677 | ||
678 | if (signal_pending(current)) { | |
679 | err = sock_intr_errno(timeo); | |
680 | break; | |
681 | } | |
552b0d3c PH |
682 | |
683 | release_sock(sk); | |
dfb2fae7 PH |
684 | |
685 | timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); | |
552b0d3c | 686 | lock_sock(sk); |
1da177e4 | 687 | } |
aa395145 | 688 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
689 | |
690 | if (err) | |
691 | goto done; | |
692 | ||
693 | newsock->state = SS_CONNECTED; | |
694 | ||
695 | BT_DBG("new socket %p", ch); | |
696 | ||
697 | done: | |
698 | release_sock(sk); | |
699 | return err; | |
700 | } | |
701 | ||
c4297e8f | 702 | static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, |
9b2c45d4 | 703 | int peer) |
1da177e4 LT |
704 | { |
705 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
706 | struct sock *sk = sock->sk; | |
707 | ||
708 | BT_DBG("sock %p, sk %p", sock, sk); | |
709 | ||
710 | addr->sa_family = AF_BLUETOOTH; | |
1da177e4 LT |
711 | |
712 | if (peer) | |
eea96364 | 713 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
1da177e4 | 714 | else |
eea96364 | 715 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
1da177e4 | 716 | |
9b2c45d4 | 717 | return sizeof(struct sockaddr_sco); |
1da177e4 LT |
718 | } |
719 | ||
1b784140 YX |
720 | static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
721 | size_t len) | |
1da177e4 LT |
722 | { |
723 | struct sock *sk = sock->sk; | |
0771cbb3 | 724 | struct sk_buff *skb; |
b9dbdbc1 | 725 | int err; |
1da177e4 LT |
726 | |
727 | BT_DBG("sock %p, sk %p", sock, sk); | |
728 | ||
c1cbe4b7 BL |
729 | err = sock_error(sk); |
730 | if (err) | |
731 | return err; | |
1da177e4 LT |
732 | |
733 | if (msg->msg_flags & MSG_OOB) | |
734 | return -EOPNOTSUPP; | |
735 | ||
0771cbb3 | 736 | skb = bt_skb_sendmsg(sk, msg, len, len, 0, 0); |
266191aa | 737 | if (IS_ERR(skb)) |
0771cbb3 | 738 | return PTR_ERR(skb); |
99c23da0 | 739 | |
1da177e4 LT |
740 | lock_sock(sk); |
741 | ||
742 | if (sk->sk_state == BT_CONNECTED) | |
0771cbb3 | 743 | err = sco_send_frame(sk, skb); |
1da177e4 LT |
744 | else |
745 | err = -ENOTCONN; | |
746 | ||
747 | release_sock(sk); | |
037ce005 LAD |
748 | |
749 | if (err < 0) | |
0771cbb3 | 750 | kfree_skb(skb); |
1da177e4 LT |
751 | return err; |
752 | } | |
753 | ||
2f69a82a | 754 | static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
fa5513be FD |
755 | { |
756 | struct hci_dev *hdev = conn->hdev; | |
757 | ||
758 | BT_DBG("conn %p", conn); | |
759 | ||
760 | conn->state = BT_CONFIG; | |
761 | ||
762 | if (!lmp_esco_capable(hdev)) { | |
763 | struct hci_cp_accept_conn_req cp; | |
764 | ||
765 | bacpy(&cp.bdaddr, &conn->dst); | |
33f24048 | 766 | cp.role = 0x00; /* Ignored */ |
fa5513be FD |
767 | |
768 | hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); | |
769 | } else { | |
770 | struct hci_cp_accept_sync_conn_req cp; | |
771 | ||
772 | bacpy(&cp.bdaddr, &conn->dst); | |
773 | cp.pkt_type = cpu_to_le16(conn->pkt_type); | |
774 | ||
dcf4adbf JP |
775 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
776 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
2f69a82a FD |
777 | cp.content_format = cpu_to_le16(setting); |
778 | ||
779 | switch (setting & SCO_AIRMODE_MASK) { | |
780 | case SCO_AIRMODE_TRANSP: | |
781 | if (conn->pkt_type & ESCO_2EV3) | |
dcf4adbf | 782 | cp.max_latency = cpu_to_le16(0x0008); |
2f69a82a | 783 | else |
dcf4adbf | 784 | cp.max_latency = cpu_to_le16(0x000D); |
2f69a82a FD |
785 | cp.retrans_effort = 0x02; |
786 | break; | |
787 | case SCO_AIRMODE_CVSD: | |
dcf4adbf | 788 | cp.max_latency = cpu_to_le16(0xffff); |
2f69a82a FD |
789 | cp.retrans_effort = 0xff; |
790 | break; | |
59da0b38 DC |
791 | default: |
792 | /* use CVSD settings as fallback */ | |
793 | cp.max_latency = cpu_to_le16(0xffff); | |
794 | cp.retrans_effort = 0xff; | |
795 | break; | |
2f69a82a | 796 | } |
fa5513be FD |
797 | |
798 | hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, | |
799 | sizeof(cp), &cp); | |
800 | } | |
801 | } | |
802 | ||
1b784140 YX |
803 | static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
804 | size_t len, int flags) | |
20714bfe FD |
805 | { |
806 | struct sock *sk = sock->sk; | |
807 | struct sco_pinfo *pi = sco_pi(sk); | |
808 | ||
809 | lock_sock(sk); | |
810 | ||
811 | if (sk->sk_state == BT_CONNECT2 && | |
812 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { | |
2f69a82a | 813 | sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
20714bfe FD |
814 | sk->sk_state = BT_CONFIG; |
815 | ||
816 | release_sock(sk); | |
817 | return 0; | |
818 | } | |
819 | ||
820 | release_sock(sk); | |
821 | ||
1b784140 | 822 | return bt_sock_recvmsg(sock, msg, len, flags); |
20714bfe FD |
823 | } |
824 | ||
c4297e8f | 825 | static int sco_sock_setsockopt(struct socket *sock, int level, int optname, |
a7b75c5a | 826 | sockptr_t optval, unsigned int optlen) |
1da177e4 LT |
827 | { |
828 | struct sock *sk = sock->sk; | |
ad10b1a4 FD |
829 | int len, err = 0; |
830 | struct bt_voice voice; | |
b96e9c67 | 831 | u32 opt; |
f6873401 K |
832 | struct bt_codecs *codecs; |
833 | struct hci_dev *hdev; | |
834 | __u8 buffer[255]; | |
1da177e4 LT |
835 | |
836 | BT_DBG("sk %p", sk); | |
837 | ||
838 | lock_sock(sk); | |
839 | ||
840 | switch (optname) { | |
b96e9c67 FD |
841 | |
842 | case BT_DEFER_SETUP: | |
843 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
844 | err = -EINVAL; | |
845 | break; | |
846 | } | |
847 | ||
a7b75c5a | 848 | if (copy_from_sockptr(&opt, optval, sizeof(u32))) { |
b96e9c67 FD |
849 | err = -EFAULT; |
850 | break; | |
851 | } | |
852 | ||
853 | if (opt) | |
854 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
855 | else | |
856 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
857 | break; | |
858 | ||
ad10b1a4 FD |
859 | case BT_VOICE: |
860 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
861 | sk->sk_state != BT_CONNECT2) { | |
862 | err = -EINVAL; | |
863 | break; | |
864 | } | |
865 | ||
866 | voice.setting = sco_pi(sk)->setting; | |
867 | ||
868 | len = min_t(unsigned int, sizeof(voice), optlen); | |
a7b75c5a | 869 | if (copy_from_sockptr(&voice, optval, len)) { |
ad10b1a4 FD |
870 | err = -EFAULT; |
871 | break; | |
872 | } | |
873 | ||
874 | /* Explicitly check for these values */ | |
875 | if (voice.setting != BT_VOICE_TRANSPARENT && | |
876 | voice.setting != BT_VOICE_CVSD_16BIT) { | |
877 | err = -EINVAL; | |
878 | break; | |
879 | } | |
880 | ||
881 | sco_pi(sk)->setting = voice.setting; | |
b2af264a K |
882 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, |
883 | BDADDR_BREDR); | |
884 | if (!hdev) { | |
885 | err = -EBADFD; | |
886 | break; | |
887 | } | |
888 | if (enhanced_sco_capable(hdev) && | |
889 | voice.setting == BT_VOICE_TRANSPARENT) | |
890 | sco_pi(sk)->codec.id = BT_CODEC_TRANSPARENT; | |
891 | hci_dev_put(hdev); | |
ad10b1a4 FD |
892 | break; |
893 | ||
00398e1d | 894 | case BT_PKT_STATUS: |
83a33b24 | 895 | if (copy_from_sockptr(&opt, optval, sizeof(u32))) { |
00398e1d AM |
896 | err = -EFAULT; |
897 | break; | |
898 | } | |
899 | ||
900 | if (opt) | |
901 | sco_pi(sk)->cmsg_mask |= SCO_CMSG_PKT_STATUS; | |
902 | else | |
903 | sco_pi(sk)->cmsg_mask &= SCO_CMSG_PKT_STATUS; | |
904 | break; | |
905 | ||
f6873401 K |
906 | case BT_CODEC: |
907 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
908 | sk->sk_state != BT_CONNECT2) { | |
909 | err = -EINVAL; | |
910 | break; | |
911 | } | |
912 | ||
913 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, | |
914 | BDADDR_BREDR); | |
915 | if (!hdev) { | |
916 | err = -EBADFD; | |
917 | break; | |
918 | } | |
919 | ||
920 | if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) { | |
921 | hci_dev_put(hdev); | |
922 | err = -EOPNOTSUPP; | |
923 | break; | |
924 | } | |
925 | ||
926 | if (!hdev->get_data_path_id) { | |
927 | hci_dev_put(hdev); | |
928 | err = -EOPNOTSUPP; | |
929 | break; | |
930 | } | |
931 | ||
932 | if (optlen < sizeof(struct bt_codecs) || | |
933 | optlen > sizeof(buffer)) { | |
934 | hci_dev_put(hdev); | |
935 | err = -EINVAL; | |
936 | break; | |
937 | } | |
938 | ||
939 | if (copy_from_sockptr(buffer, optval, optlen)) { | |
940 | hci_dev_put(hdev); | |
941 | err = -EFAULT; | |
942 | break; | |
943 | } | |
944 | ||
945 | codecs = (void *)buffer; | |
946 | ||
947 | if (codecs->num_codecs > 1) { | |
948 | hci_dev_put(hdev); | |
949 | err = -EINVAL; | |
950 | break; | |
951 | } | |
952 | ||
953 | sco_pi(sk)->codec = codecs->codecs[0]; | |
954 | hci_dev_put(hdev); | |
955 | break; | |
956 | ||
1da177e4 LT |
957 | default: |
958 | err = -ENOPROTOOPT; | |
959 | break; | |
960 | } | |
961 | ||
962 | release_sock(sk); | |
963 | return err; | |
964 | } | |
965 | ||
c4297e8f MH |
966 | static int sco_sock_getsockopt_old(struct socket *sock, int optname, |
967 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
968 | { |
969 | struct sock *sk = sock->sk; | |
970 | struct sco_options opts; | |
971 | struct sco_conninfo cinfo; | |
8e87d142 | 972 | int len, err = 0; |
1da177e4 LT |
973 | |
974 | BT_DBG("sk %p", sk); | |
975 | ||
976 | if (get_user(len, optlen)) | |
977 | return -EFAULT; | |
978 | ||
979 | lock_sock(sk); | |
980 | ||
981 | switch (optname) { | |
982 | case SCO_OPTIONS: | |
9d225d22 JH |
983 | if (sk->sk_state != BT_CONNECTED && |
984 | !(sk->sk_state == BT_CONNECT2 && | |
985 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
986 | err = -ENOTCONN; |
987 | break; | |
988 | } | |
989 | ||
990 | opts.mtu = sco_pi(sk)->conn->mtu; | |
991 | ||
79dbeafe | 992 | BT_DBG("mtu %u", opts.mtu); |
1da177e4 LT |
993 | |
994 | len = min_t(unsigned int, len, sizeof(opts)); | |
995 | if (copy_to_user(optval, (char *)&opts, len)) | |
996 | err = -EFAULT; | |
997 | ||
998 | break; | |
999 | ||
1000 | case SCO_CONNINFO: | |
9d225d22 JH |
1001 | if (sk->sk_state != BT_CONNECTED && |
1002 | !(sk->sk_state == BT_CONNECT2 && | |
1003 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
1004 | err = -ENOTCONN; |
1005 | break; | |
1006 | } | |
1007 | ||
c4c896e1 | 1008 | memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4 LT |
1009 | cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; |
1010 | memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); | |
1011 | ||
1012 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
1013 | if (copy_to_user(optval, (char *)&cinfo, len)) | |
1014 | err = -EFAULT; | |
1015 | ||
1016 | break; | |
1017 | ||
1018 | default: | |
1019 | err = -ENOPROTOOPT; | |
1020 | break; | |
1021 | } | |
1022 | ||
1023 | release_sock(sk); | |
1024 | return err; | |
1025 | } | |
1026 | ||
c4297e8f MH |
1027 | static int sco_sock_getsockopt(struct socket *sock, int level, int optname, |
1028 | char __user *optval, int __user *optlen) | |
d58daf42 MH |
1029 | { |
1030 | struct sock *sk = sock->sk; | |
1031 | int len, err = 0; | |
ad10b1a4 | 1032 | struct bt_voice voice; |
eab2404b | 1033 | u32 phys; |
00398e1d | 1034 | int pkt_status; |
248733e8 K |
1035 | int buf_len; |
1036 | struct codec_list *c; | |
1037 | u8 num_codecs, i, __user *ptr; | |
1038 | struct hci_dev *hdev; | |
1039 | struct hci_codec_caps *caps; | |
1040 | struct bt_codec codec; | |
d58daf42 MH |
1041 | |
1042 | BT_DBG("sk %p", sk); | |
1043 | ||
1044 | if (level == SOL_SCO) | |
1045 | return sco_sock_getsockopt_old(sock, optname, optval, optlen); | |
1046 | ||
1047 | if (get_user(len, optlen)) | |
1048 | return -EFAULT; | |
1049 | ||
1050 | lock_sock(sk); | |
1051 | ||
1052 | switch (optname) { | |
b96e9c67 FD |
1053 | |
1054 | case BT_DEFER_SETUP: | |
1055 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
1056 | err = -EINVAL; | |
1057 | break; | |
1058 | } | |
1059 | ||
1060 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), | |
c4297e8f | 1061 | (u32 __user *)optval)) |
b96e9c67 FD |
1062 | err = -EFAULT; |
1063 | ||
1064 | break; | |
1065 | ||
ad10b1a4 FD |
1066 | case BT_VOICE: |
1067 | voice.setting = sco_pi(sk)->setting; | |
1068 | ||
1069 | len = min_t(unsigned int, len, sizeof(voice)); | |
1070 | if (copy_to_user(optval, (char *)&voice, len)) | |
1071 | err = -EFAULT; | |
1072 | ||
1073 | break; | |
1074 | ||
eab2404b | 1075 | case BT_PHY: |
a2a8b0b4 | 1076 | if (sk->sk_state != BT_CONNECTED) { |
eab2404b LAD |
1077 | err = -ENOTCONN; |
1078 | break; | |
1079 | } | |
1080 | ||
1081 | phys = hci_conn_get_phy(sco_pi(sk)->conn->hcon); | |
1082 | ||
1083 | if (put_user(phys, (u32 __user *) optval)) | |
1084 | err = -EFAULT; | |
1085 | break; | |
1086 | ||
00398e1d AM |
1087 | case BT_PKT_STATUS: |
1088 | pkt_status = (sco_pi(sk)->cmsg_mask & SCO_CMSG_PKT_STATUS); | |
1089 | ||
1090 | if (put_user(pkt_status, (int __user *)optval)) | |
1091 | err = -EFAULT; | |
1092 | break; | |
1093 | ||
0fc1a726 JH |
1094 | case BT_SNDMTU: |
1095 | case BT_RCVMTU: | |
f6b8c6b5 WY |
1096 | if (sk->sk_state != BT_CONNECTED) { |
1097 | err = -ENOTCONN; | |
1098 | break; | |
1099 | } | |
1100 | ||
0fc1a726 JH |
1101 | if (put_user(sco_pi(sk)->conn->mtu, (u32 __user *)optval)) |
1102 | err = -EFAULT; | |
1103 | break; | |
1104 | ||
248733e8 K |
1105 | case BT_CODEC: |
1106 | num_codecs = 0; | |
1107 | buf_len = 0; | |
1108 | ||
1109 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR); | |
1110 | if (!hdev) { | |
1111 | err = -EBADFD; | |
1112 | break; | |
1113 | } | |
1114 | ||
1115 | if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) { | |
1116 | hci_dev_put(hdev); | |
1117 | err = -EOPNOTSUPP; | |
1118 | break; | |
1119 | } | |
1120 | ||
1121 | if (!hdev->get_data_path_id) { | |
1122 | hci_dev_put(hdev); | |
1123 | err = -EOPNOTSUPP; | |
1124 | break; | |
1125 | } | |
1126 | ||
1127 | /* find total buffer size required to copy codec + caps */ | |
1128 | hci_dev_lock(hdev); | |
1129 | list_for_each_entry(c, &hdev->local_codecs, list) { | |
1130 | if (c->transport != HCI_TRANSPORT_SCO_ESCO) | |
1131 | continue; | |
1132 | num_codecs++; | |
1133 | for (i = 0, caps = c->caps; i < c->num_caps; i++) { | |
1134 | buf_len += 1 + caps->len; | |
1135 | caps = (void *)&caps->data[caps->len]; | |
1136 | } | |
1137 | buf_len += sizeof(struct bt_codec); | |
1138 | } | |
1139 | hci_dev_unlock(hdev); | |
1140 | ||
1141 | buf_len += sizeof(struct bt_codecs); | |
1142 | if (buf_len > len) { | |
1143 | hci_dev_put(hdev); | |
1144 | err = -ENOBUFS; | |
1145 | break; | |
1146 | } | |
1147 | ptr = optval; | |
1148 | ||
1149 | if (put_user(num_codecs, ptr)) { | |
1150 | hci_dev_put(hdev); | |
1151 | err = -EFAULT; | |
1152 | break; | |
1153 | } | |
1154 | ptr += sizeof(num_codecs); | |
1155 | ||
1156 | /* Iterate all the codecs supported over SCO and populate | |
1157 | * codec data | |
1158 | */ | |
1159 | hci_dev_lock(hdev); | |
1160 | list_for_each_entry(c, &hdev->local_codecs, list) { | |
1161 | if (c->transport != HCI_TRANSPORT_SCO_ESCO) | |
1162 | continue; | |
1163 | ||
1164 | codec.id = c->id; | |
1165 | codec.cid = c->cid; | |
1166 | codec.vid = c->vid; | |
1167 | err = hdev->get_data_path_id(hdev, &codec.data_path); | |
1168 | if (err < 0) | |
1169 | break; | |
1170 | codec.num_caps = c->num_caps; | |
1171 | if (copy_to_user(ptr, &codec, sizeof(codec))) { | |
1172 | err = -EFAULT; | |
1173 | break; | |
1174 | } | |
1175 | ptr += sizeof(codec); | |
1176 | ||
1177 | /* find codec capabilities data length */ | |
1178 | len = 0; | |
1179 | for (i = 0, caps = c->caps; i < c->num_caps; i++) { | |
1180 | len += 1 + caps->len; | |
1181 | caps = (void *)&caps->data[caps->len]; | |
1182 | } | |
1183 | ||
1184 | /* copy codec capabilities data */ | |
1185 | if (len && copy_to_user(ptr, c->caps, len)) { | |
1186 | err = -EFAULT; | |
1187 | break; | |
1188 | } | |
1189 | ptr += len; | |
1190 | } | |
1191 | ||
1192 | if (!err && put_user(buf_len, optlen)) | |
1193 | err = -EFAULT; | |
1194 | ||
1195 | hci_dev_unlock(hdev); | |
1196 | hci_dev_put(hdev); | |
1197 | ||
1198 | break; | |
1199 | ||
d58daf42 MH |
1200 | default: |
1201 | err = -ENOPROTOOPT; | |
1202 | break; | |
1203 | } | |
1204 | ||
1205 | release_sock(sk); | |
1206 | return err; | |
1207 | } | |
1208 | ||
fd0b3ff7 MH |
1209 | static int sco_sock_shutdown(struct socket *sock, int how) |
1210 | { | |
1211 | struct sock *sk = sock->sk; | |
1212 | int err = 0; | |
1213 | ||
1214 | BT_DBG("sock %p, sk %p", sock, sk); | |
1215 | ||
1216 | if (!sk) | |
1217 | return 0; | |
1218 | ||
1da5537e | 1219 | sock_hold(sk); |
fd0b3ff7 | 1220 | lock_sock(sk); |
1da5537e | 1221 | |
fd0b3ff7 MH |
1222 | if (!sk->sk_shutdown) { |
1223 | sk->sk_shutdown = SHUTDOWN_MASK; | |
1224 | sco_sock_clear_timer(sk); | |
1225 | __sco_sock_close(sk); | |
1226 | ||
093facf3 VD |
1227 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
1228 | !(current->flags & PF_EXITING)) | |
fd0b3ff7 | 1229 | err = bt_sock_wait_state(sk, BT_CLOSED, |
be7c2b99 | 1230 | sk->sk_lingertime); |
fd0b3ff7 | 1231 | } |
1da5537e | 1232 | |
fd0b3ff7 | 1233 | release_sock(sk); |
1da5537e KP |
1234 | sock_put(sk); |
1235 | ||
fd0b3ff7 MH |
1236 | return err; |
1237 | } | |
1238 | ||
1da177e4 LT |
1239 | static int sco_sock_release(struct socket *sock) |
1240 | { | |
1241 | struct sock *sk = sock->sk; | |
1242 | int err = 0; | |
1243 | ||
1244 | BT_DBG("sock %p, sk %p", sock, sk); | |
1245 | ||
1246 | if (!sk) | |
1247 | return 0; | |
1248 | ||
1249 | sco_sock_close(sk); | |
1250 | ||
093facf3 VD |
1251 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
1252 | !(current->flags & PF_EXITING)) { | |
1da177e4 LT |
1253 | lock_sock(sk); |
1254 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
1255 | release_sock(sk); | |
1256 | } | |
1257 | ||
1258 | sock_orphan(sk); | |
1259 | sco_sock_kill(sk); | |
1260 | return err; | |
1261 | } | |
1262 | ||
1da177e4 LT |
1263 | static void sco_conn_ready(struct sco_conn *conn) |
1264 | { | |
735cbc47 AE |
1265 | struct sock *parent; |
1266 | struct sock *sk = conn->sk; | |
1da177e4 LT |
1267 | |
1268 | BT_DBG("conn %p", conn); | |
1269 | ||
735cbc47 | 1270 | if (sk) { |
27c24fda | 1271 | lock_sock(sk); |
3f2c89fb | 1272 | sco_sock_clear_timer(sk); |
1da177e4 LT |
1273 | sk->sk_state = BT_CONNECTED; |
1274 | sk->sk_state_change(sk); | |
27c24fda | 1275 | release_sock(sk); |
1da177e4 | 1276 | } else { |
40528088 AG |
1277 | sco_conn_lock(conn); |
1278 | ||
2c501cdd KP |
1279 | if (!conn->hcon) { |
1280 | sco_conn_unlock(conn); | |
1281 | return; | |
1282 | } | |
1283 | ||
041987cf | 1284 | parent = sco_get_sock_listen(&conn->hcon->src); |
40528088 AG |
1285 | if (!parent) { |
1286 | sco_conn_unlock(conn); | |
1287 | return; | |
1288 | } | |
1da177e4 | 1289 | |
27c24fda | 1290 | lock_sock(parent); |
1da177e4 | 1291 | |
b9dbdbc1 | 1292 | sk = sco_sock_alloc(sock_net(parent), NULL, |
11aa9c28 | 1293 | BTPROTO_SCO, GFP_ATOMIC, 0); |
1da177e4 | 1294 | if (!sk) { |
27c24fda | 1295 | release_sock(parent); |
40528088 AG |
1296 | sco_conn_unlock(conn); |
1297 | return; | |
1da177e4 LT |
1298 | } |
1299 | ||
1300 | sco_sock_init(sk, parent); | |
1301 | ||
eea96364 MH |
1302 | bacpy(&sco_pi(sk)->src, &conn->hcon->src); |
1303 | bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); | |
1da177e4 LT |
1304 | |
1305 | hci_conn_hold(conn->hcon); | |
1306 | __sco_chan_add(conn, sk, parent); | |
1307 | ||
20714bfe FD |
1308 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
1309 | sk->sk_state = BT_CONNECT2; | |
1310 | else | |
1311 | sk->sk_state = BT_CONNECTED; | |
1da177e4 LT |
1312 | |
1313 | /* Wake up parent */ | |
676d2369 | 1314 | parent->sk_data_ready(parent); |
1da177e4 | 1315 | |
27c24fda | 1316 | release_sock(parent); |
1da177e4 | 1317 | |
40528088 AG |
1318 | sco_conn_unlock(conn); |
1319 | } | |
1da177e4 LT |
1320 | } |
1321 | ||
1322 | /* ----- SCO interface with lower layer (HCI) ----- */ | |
20714bfe | 1323 | int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4 | 1324 | { |
fc5fef61 | 1325 | struct sock *sk; |
71aeeaa1 MH |
1326 | int lm = 0; |
1327 | ||
6ed93dc6 | 1328 | BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4 | 1329 | |
71aeeaa1 MH |
1330 | /* Find listening sockets */ |
1331 | read_lock(&sco_sk_list.lock); | |
b67bfe0d | 1332 | sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1 MH |
1333 | if (sk->sk_state != BT_LISTEN) |
1334 | continue; | |
1335 | ||
eea96364 MH |
1336 | if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || |
1337 | !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { | |
71aeeaa1 | 1338 | lm |= HCI_LM_ACCEPT; |
20714bfe FD |
1339 | |
1340 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) | |
1341 | *flags |= HCI_PROTO_DEFER; | |
71aeeaa1 MH |
1342 | break; |
1343 | } | |
1344 | } | |
1345 | read_unlock(&sco_sk_list.lock); | |
1346 | ||
1347 | return lm; | |
1da177e4 LT |
1348 | } |
1349 | ||
539c496d | 1350 | static void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4 | 1351 | { |
539c496d JH |
1352 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1353 | return; | |
1354 | ||
79dbeafe | 1355 | BT_DBG("hcon %p bdaddr %pMR status %u", hcon, &hcon->dst, status); |
539c496d | 1356 | |
1da177e4 LT |
1357 | if (!status) { |
1358 | struct sco_conn *conn; | |
1359 | ||
519e42b3 | 1360 | conn = sco_conn_add(hcon); |
1da177e4 LT |
1361 | if (conn) |
1362 | sco_conn_ready(conn); | |
8e87d142 | 1363 | } else |
e175072f | 1364 | sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4 LT |
1365 | } |
1366 | ||
3a6d576b | 1367 | static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4 | 1368 | { |
3a6d576b JH |
1369 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1370 | return; | |
1371 | ||
1da177e4 LT |
1372 | BT_DBG("hcon %p reason %d", hcon, reason); |
1373 | ||
e175072f | 1374 | sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4 LT |
1375 | } |
1376 | ||
9b4c3336 | 1377 | void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4 LT |
1378 | { |
1379 | struct sco_conn *conn = hcon->sco_data; | |
1380 | ||
1381 | if (!conn) | |
1382 | goto drop; | |
1383 | ||
79dbeafe | 1384 | BT_DBG("conn %p len %u", conn, skb->len); |
1da177e4 LT |
1385 | |
1386 | if (skb->len) { | |
1387 | sco_recv_frame(conn, skb); | |
9b4c3336 | 1388 | return; |
1da177e4 LT |
1389 | } |
1390 | ||
1391 | drop: | |
8e87d142 | 1392 | kfree_skb(skb); |
1da177e4 LT |
1393 | } |
1394 | ||
539c496d JH |
1395 | static struct hci_cb sco_cb = { |
1396 | .name = "SCO", | |
1397 | .connect_cfm = sco_connect_cfm, | |
3a6d576b | 1398 | .disconn_cfm = sco_disconn_cfm, |
539c496d JH |
1399 | }; |
1400 | ||
aef7d97c | 1401 | static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1402 | { |
1403 | struct sock *sk; | |
1da177e4 | 1404 | |
ee65d19e | 1405 | read_lock(&sco_sk_list.lock); |
1da177e4 | 1406 | |
b67bfe0d | 1407 | sk_for_each(sk, &sco_sk_list.head) { |
eea96364 MH |
1408 | seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src, |
1409 | &sco_pi(sk)->dst, sk->sk_state); | |
be9d1227 | 1410 | } |
1da177e4 | 1411 | |
ee65d19e | 1412 | read_unlock(&sco_sk_list.lock); |
1da177e4 | 1413 | |
aef7d97c | 1414 | return 0; |
1da177e4 LT |
1415 | } |
1416 | ||
8e2924e3 | 1417 | DEFINE_SHOW_ATTRIBUTE(sco_debugfs); |
aef7d97c MH |
1418 | |
1419 | static struct dentry *sco_debugfs; | |
1da177e4 | 1420 | |
90ddc4f0 | 1421 | static const struct proto_ops sco_sock_ops = { |
1da177e4 LT |
1422 | .family = PF_BLUETOOTH, |
1423 | .owner = THIS_MODULE, | |
1424 | .release = sco_sock_release, | |
1425 | .bind = sco_sock_bind, | |
1426 | .connect = sco_sock_connect, | |
1427 | .listen = sco_sock_listen, | |
1428 | .accept = sco_sock_accept, | |
1429 | .getname = sco_sock_getname, | |
1430 | .sendmsg = sco_sock_sendmsg, | |
20714bfe | 1431 | .recvmsg = sco_sock_recvmsg, |
a11e1d43 | 1432 | .poll = bt_sock_poll, |
3241ad82 | 1433 | .ioctl = bt_sock_ioctl, |
c7cbdbf2 | 1434 | .gettstamp = sock_gettstamp, |
1da177e4 LT |
1435 | .mmap = sock_no_mmap, |
1436 | .socketpair = sock_no_socketpair, | |
fd0b3ff7 | 1437 | .shutdown = sco_sock_shutdown, |
1da177e4 LT |
1438 | .setsockopt = sco_sock_setsockopt, |
1439 | .getsockopt = sco_sock_getsockopt | |
1440 | }; | |
1441 | ||
ec1b4cf7 | 1442 | static const struct net_proto_family sco_sock_family_ops = { |
1da177e4 LT |
1443 | .family = PF_BLUETOOTH, |
1444 | .owner = THIS_MODULE, | |
1445 | .create = sco_sock_create, | |
1446 | }; | |
1447 | ||
64274518 | 1448 | int __init sco_init(void) |
1da177e4 LT |
1449 | { |
1450 | int err; | |
1451 | ||
15762fa7 MH |
1452 | BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr)); |
1453 | ||
1da177e4 LT |
1454 | err = proto_register(&sco_proto, 0); |
1455 | if (err < 0) | |
1456 | return err; | |
1457 | ||
1458 | err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); | |
1459 | if (err < 0) { | |
1460 | BT_ERR("SCO socket registration failed"); | |
1461 | goto error; | |
1462 | } | |
1463 | ||
b0316615 | 1464 | err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212 MY |
1465 | if (err < 0) { |
1466 | BT_ERR("Failed to create SCO proc file"); | |
1467 | bt_sock_unregister(BTPROTO_SCO); | |
1468 | goto error; | |
1469 | } | |
1470 | ||
1da177e4 LT |
1471 | BT_INFO("SCO socket layer initialized"); |
1472 | ||
539c496d JH |
1473 | hci_register_cb(&sco_cb); |
1474 | ||
1120e4bf MH |
1475 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1476 | return 0; | |
1477 | ||
1478 | sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, | |
1479 | NULL, &sco_debugfs_fops); | |
1480 | ||
1da177e4 LT |
1481 | return 0; |
1482 | ||
1483 | error: | |
1484 | proto_unregister(&sco_proto); | |
1485 | return err; | |
1486 | } | |
1487 | ||
0402d9f2 | 1488 | void sco_exit(void) |
1da177e4 | 1489 | { |
de9b9212 MY |
1490 | bt_procfs_cleanup(&init_net, "sco"); |
1491 | ||
aef7d97c | 1492 | debugfs_remove(sco_debugfs); |
1da177e4 | 1493 | |
539c496d JH |
1494 | hci_unregister_cb(&sco_cb); |
1495 | ||
5e9d7f86 | 1496 | bt_sock_unregister(BTPROTO_SCO); |
1da177e4 | 1497 | |
1da177e4 LT |
1498 | proto_unregister(&sco_proto); |
1499 | } | |
1500 | ||
7cb127d5 MH |
1501 | module_param(disable_esco, bool, 0644); |
1502 | MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |