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Commit | Line | Data |
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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 | ||
51 | unsigned int mtu; | |
52 | }; | |
53 | ||
54 | #define sco_conn_lock(c) spin_lock(&c->lock); | |
55 | #define sco_conn_unlock(c) spin_unlock(&c->lock); | |
56 | ||
1da177e4 LT |
57 | static void sco_sock_close(struct sock *sk); |
58 | static void sco_sock_kill(struct sock *sk); | |
59 | ||
2a0dccb3 MH |
60 | /* ----- SCO socket info ----- */ |
61 | #define sco_pi(sk) ((struct sco_pinfo *) sk) | |
62 | ||
63 | struct sco_pinfo { | |
64 | struct bt_sock bt; | |
65 | bdaddr_t src; | |
66 | bdaddr_t dst; | |
67 | __u32 flags; | |
68 | __u16 setting; | |
69 | struct sco_conn *conn; | |
70 | }; | |
71 | ||
1da177e4 | 72 | /* ---- SCO timers ---- */ |
068d69e5 MH |
73 | #define SCO_CONN_TIMEOUT (HZ * 40) |
74 | #define SCO_DISCONN_TIMEOUT (HZ * 2) | |
75 | ||
e99e88a9 | 76 | static void sco_sock_timeout(struct timer_list *t) |
1da177e4 | 77 | { |
e99e88a9 | 78 | struct sock *sk = from_timer(sk, t, sk_timer); |
1da177e4 LT |
79 | |
80 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
81 | ||
82 | bh_lock_sock(sk); | |
83 | sk->sk_err = ETIMEDOUT; | |
84 | sk->sk_state_change(sk); | |
85 | bh_unlock_sock(sk); | |
86 | ||
87 | sco_sock_kill(sk); | |
88 | sock_put(sk); | |
89 | } | |
90 | ||
91 | static void sco_sock_set_timer(struct sock *sk, long timeout) | |
92 | { | |
93 | BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout); | |
94 | sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout); | |
95 | } | |
96 | ||
97 | static void sco_sock_clear_timer(struct sock *sk) | |
98 | { | |
99 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
100 | sk_stop_timer(sk, &sk->sk_timer); | |
101 | } | |
102 | ||
1da177e4 | 103 | /* ---- SCO connections ---- */ |
519e42b3 | 104 | static struct sco_conn *sco_conn_add(struct hci_conn *hcon) |
1da177e4 LT |
105 | { |
106 | struct hci_dev *hdev = hcon->hdev; | |
25ea6db0 | 107 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 | 108 | |
519e42b3 | 109 | if (conn) |
1da177e4 LT |
110 | return conn; |
111 | ||
c10cc5a9 | 112 | conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL); |
25ea6db0 | 113 | if (!conn) |
1da177e4 | 114 | return NULL; |
1da177e4 LT |
115 | |
116 | spin_lock_init(&conn->lock); | |
117 | ||
118 | hcon->sco_data = conn; | |
119 | conn->hcon = hcon; | |
120 | ||
1da177e4 LT |
121 | if (hdev->sco_mtu > 0) |
122 | conn->mtu = hdev->sco_mtu; | |
123 | else | |
124 | conn->mtu = 60; | |
125 | ||
126 | BT_DBG("hcon %p conn %p", hcon, conn); | |
25ea6db0 | 127 | |
1da177e4 LT |
128 | return conn; |
129 | } | |
130 | ||
e03ab519 MH |
131 | /* Delete channel. |
132 | * Must be called on the locked socket. */ | |
133 | static void sco_chan_del(struct sock *sk, int err) | |
134 | { | |
135 | struct sco_conn *conn; | |
136 | ||
137 | conn = sco_pi(sk)->conn; | |
138 | ||
139 | BT_DBG("sk %p, conn %p, err %d", sk, conn, err); | |
140 | ||
141 | if (conn) { | |
142 | sco_conn_lock(conn); | |
143 | conn->sk = NULL; | |
144 | sco_pi(sk)->conn = NULL; | |
145 | sco_conn_unlock(conn); | |
146 | ||
147 | if (conn->hcon) | |
148 | hci_conn_drop(conn->hcon); | |
149 | } | |
150 | ||
151 | sk->sk_state = BT_CLOSED; | |
152 | sk->sk_err = err; | |
153 | sk->sk_state_change(sk); | |
154 | ||
155 | sock_set_flag(sk, SOCK_ZAPPED); | |
156 | } | |
157 | ||
df945360 | 158 | static void sco_conn_del(struct hci_conn *hcon, int err) |
1da177e4 | 159 | { |
735cbc47 | 160 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 LT |
161 | struct sock *sk; |
162 | ||
735cbc47 | 163 | if (!conn) |
df945360 | 164 | return; |
1da177e4 LT |
165 | |
166 | BT_DBG("hcon %p conn %p, err %d", hcon, conn, err); | |
167 | ||
168 | /* Kill socket */ | |
eb5a4de8 MH |
169 | sco_conn_lock(conn); |
170 | sk = conn->sk; | |
171 | sco_conn_unlock(conn); | |
172 | ||
735cbc47 | 173 | if (sk) { |
75e34f5c | 174 | sock_hold(sk); |
1da177e4 LT |
175 | bh_lock_sock(sk); |
176 | sco_sock_clear_timer(sk); | |
177 | sco_chan_del(sk, err); | |
178 | bh_unlock_sock(sk); | |
179 | sco_sock_kill(sk); | |
75e34f5c | 180 | sock_put(sk); |
1da177e4 LT |
181 | } |
182 | ||
183 | hcon->sco_data = NULL; | |
184 | kfree(conn); | |
1da177e4 LT |
185 | } |
186 | ||
c4297e8f MH |
187 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, |
188 | struct sock *parent) | |
015b01cb MH |
189 | { |
190 | BT_DBG("conn %p", conn); | |
191 | ||
192 | sco_pi(sk)->conn = conn; | |
193 | conn->sk = sk; | |
194 | ||
195 | if (parent) | |
196 | bt_accept_enqueue(parent, sk); | |
197 | } | |
198 | ||
6039aa73 GP |
199 | static int sco_chan_add(struct sco_conn *conn, struct sock *sk, |
200 | struct sock *parent) | |
1da177e4 LT |
201 | { |
202 | int err = 0; | |
203 | ||
204 | sco_conn_lock(conn); | |
b9dbdbc1 | 205 | if (conn->sk) |
1da177e4 | 206 | err = -EBUSY; |
b9dbdbc1 | 207 | else |
1da177e4 | 208 | __sco_chan_add(conn, sk, parent); |
b9dbdbc1 | 209 | |
1da177e4 LT |
210 | sco_conn_unlock(conn); |
211 | return err; | |
212 | } | |
213 | ||
214 | static int sco_connect(struct sock *sk) | |
215 | { | |
1da177e4 LT |
216 | struct sco_conn *conn; |
217 | struct hci_conn *hcon; | |
218 | struct hci_dev *hdev; | |
b6a0dc82 | 219 | int err, type; |
1da177e4 | 220 | |
eea96364 | 221 | BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst); |
1da177e4 | 222 | |
39385cb5 | 223 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR); |
735cbc47 | 224 | if (!hdev) |
1da177e4 LT |
225 | return -EHOSTUNREACH; |
226 | ||
09fd0de5 | 227 | hci_dev_lock(hdev); |
1da177e4 | 228 | |
7cb127d5 MH |
229 | if (lmp_esco_capable(hdev) && !disable_esco) |
230 | type = ESCO_LINK; | |
231 | else | |
232 | type = SCO_LINK; | |
b6a0dc82 | 233 | |
79dc0087 FD |
234 | if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT && |
235 | (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) { | |
236 | err = -EOPNOTSUPP; | |
237 | goto done; | |
238 | } | |
239 | ||
eea96364 | 240 | hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst, |
041987cf | 241 | sco_pi(sk)->setting); |
30e76272 VT |
242 | if (IS_ERR(hcon)) { |
243 | err = PTR_ERR(hcon); | |
1da177e4 | 244 | goto done; |
30e76272 | 245 | } |
1da177e4 | 246 | |
519e42b3 | 247 | conn = sco_conn_add(hcon); |
1da177e4 | 248 | if (!conn) { |
76a68ba0 | 249 | hci_conn_drop(hcon); |
30e76272 | 250 | err = -ENOMEM; |
1da177e4 LT |
251 | goto done; |
252 | } | |
253 | ||
254 | /* Update source addr of the socket */ | |
eea96364 | 255 | bacpy(&sco_pi(sk)->src, &hcon->src); |
1da177e4 LT |
256 | |
257 | err = sco_chan_add(conn, sk, NULL); | |
258 | if (err) | |
259 | goto done; | |
260 | ||
261 | if (hcon->state == BT_CONNECTED) { | |
262 | sco_sock_clear_timer(sk); | |
263 | sk->sk_state = BT_CONNECTED; | |
264 | } else { | |
265 | sk->sk_state = BT_CONNECT; | |
266 | sco_sock_set_timer(sk, sk->sk_sndtimeo); | |
267 | } | |
b6a0dc82 | 268 | |
1da177e4 | 269 | done: |
09fd0de5 | 270 | hci_dev_unlock(hdev); |
1da177e4 LT |
271 | hci_dev_put(hdev); |
272 | return err; | |
273 | } | |
274 | ||
6039aa73 | 275 | static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len) |
1da177e4 LT |
276 | { |
277 | struct sco_conn *conn = sco_pi(sk)->conn; | |
278 | struct sk_buff *skb; | |
088ce088 | 279 | int err; |
1da177e4 LT |
280 | |
281 | /* Check outgoing MTU */ | |
282 | if (len > conn->mtu) | |
283 | return -EINVAL; | |
284 | ||
285 | BT_DBG("sk %p len %d", sk, len); | |
286 | ||
088ce088 | 287 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
b9dbdbc1 | 288 | if (!skb) |
1da177e4 LT |
289 | return err; |
290 | ||
6ce8e9ce | 291 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
b9dbdbc1 GP |
292 | kfree_skb(skb); |
293 | return -EFAULT; | |
1da177e4 LT |
294 | } |
295 | ||
0d861d8b | 296 | hci_send_sco(conn->hcon, skb); |
1da177e4 | 297 | |
088ce088 | 298 | return len; |
1da177e4 LT |
299 | } |
300 | ||
6039aa73 | 301 | static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb) |
1da177e4 | 302 | { |
eb5a4de8 MH |
303 | struct sock *sk; |
304 | ||
305 | sco_conn_lock(conn); | |
306 | sk = conn->sk; | |
307 | sco_conn_unlock(conn); | |
1da177e4 LT |
308 | |
309 | if (!sk) | |
310 | goto drop; | |
311 | ||
312 | BT_DBG("sk %p len %d", sk, skb->len); | |
313 | ||
314 | if (sk->sk_state != BT_CONNECTED) | |
315 | goto drop; | |
316 | ||
317 | if (!sock_queue_rcv_skb(sk, skb)) | |
318 | return; | |
319 | ||
320 | drop: | |
321 | kfree_skb(skb); | |
1da177e4 LT |
322 | } |
323 | ||
324 | /* -------- Socket interface ---------- */ | |
fb334059 | 325 | static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba) |
1da177e4 | 326 | { |
fb334059 MH |
327 | struct sock *sk; |
328 | ||
b67bfe0d | 329 | sk_for_each(sk, &sco_sk_list.head) { |
fb334059 MH |
330 | if (sk->sk_state != BT_LISTEN) |
331 | continue; | |
1da177e4 | 332 | |
eea96364 | 333 | if (!bacmp(&sco_pi(sk)->src, ba)) |
fb334059 MH |
334 | return sk; |
335 | } | |
336 | ||
337 | return NULL; | |
1da177e4 LT |
338 | } |
339 | ||
340 | /* Find socket listening on source bdaddr. | |
341 | * Returns closest match. | |
342 | */ | |
343 | static struct sock *sco_get_sock_listen(bdaddr_t *src) | |
344 | { | |
345 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 LT |
346 | |
347 | read_lock(&sco_sk_list.lock); | |
348 | ||
b67bfe0d | 349 | sk_for_each(sk, &sco_sk_list.head) { |
1da177e4 LT |
350 | if (sk->sk_state != BT_LISTEN) |
351 | continue; | |
352 | ||
353 | /* Exact match. */ | |
eea96364 | 354 | if (!bacmp(&sco_pi(sk)->src, src)) |
1da177e4 LT |
355 | break; |
356 | ||
357 | /* Closest match */ | |
eea96364 | 358 | if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY)) |
1da177e4 LT |
359 | sk1 = sk; |
360 | } | |
361 | ||
362 | read_unlock(&sco_sk_list.lock); | |
363 | ||
b67bfe0d | 364 | return sk ? sk : sk1; |
1da177e4 LT |
365 | } |
366 | ||
367 | static void sco_sock_destruct(struct sock *sk) | |
368 | { | |
369 | BT_DBG("sk %p", sk); | |
370 | ||
371 | skb_queue_purge(&sk->sk_receive_queue); | |
372 | skb_queue_purge(&sk->sk_write_queue); | |
373 | } | |
374 | ||
375 | static void sco_sock_cleanup_listen(struct sock *parent) | |
376 | { | |
377 | struct sock *sk; | |
378 | ||
379 | BT_DBG("parent %p", parent); | |
380 | ||
381 | /* Close not yet accepted channels */ | |
382 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
383 | sco_sock_close(sk); | |
384 | sco_sock_kill(sk); | |
385 | } | |
386 | ||
387 | parent->sk_state = BT_CLOSED; | |
388 | sock_set_flag(parent, SOCK_ZAPPED); | |
389 | } | |
390 | ||
391 | /* Kill socket (only if zapped and orphan) | |
392 | * Must be called on unlocked socket. | |
393 | */ | |
394 | static void sco_sock_kill(struct sock *sk) | |
395 | { | |
4575e439 SM |
396 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket || |
397 | sock_flag(sk, SOCK_DEAD)) | |
1da177e4 LT |
398 | return; |
399 | ||
400 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
401 | ||
402 | /* Kill poor orphan */ | |
403 | bt_sock_unlink(&sco_sk_list, sk); | |
404 | sock_set_flag(sk, SOCK_DEAD); | |
405 | sock_put(sk); | |
406 | } | |
407 | ||
fd0b3ff7 | 408 | static void __sco_sock_close(struct sock *sk) |
1da177e4 | 409 | { |
fd0b3ff7 | 410 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
1da177e4 LT |
411 | |
412 | switch (sk->sk_state) { | |
413 | case BT_LISTEN: | |
414 | sco_sock_cleanup_listen(sk); | |
415 | break; | |
416 | ||
417 | case BT_CONNECTED: | |
418 | case BT_CONFIG: | |
b7e98b51 | 419 | if (sco_pi(sk)->conn->hcon) { |
4a77708b LAD |
420 | sk->sk_state = BT_DISCONN; |
421 | sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); | |
435c5133 | 422 | sco_conn_lock(sco_pi(sk)->conn); |
76a68ba0 | 423 | hci_conn_drop(sco_pi(sk)->conn->hcon); |
4a77708b | 424 | sco_pi(sk)->conn->hcon = NULL; |
435c5133 | 425 | sco_conn_unlock(sco_pi(sk)->conn); |
4a77708b LAD |
426 | } else |
427 | sco_chan_del(sk, ECONNRESET); | |
428 | break; | |
429 | ||
eb20ff9c | 430 | case BT_CONNECT2: |
1da177e4 LT |
431 | case BT_CONNECT: |
432 | case BT_DISCONN: | |
433 | sco_chan_del(sk, ECONNRESET); | |
434 | break; | |
435 | ||
436 | default: | |
437 | sock_set_flag(sk, SOCK_ZAPPED); | |
438 | break; | |
3ff50b79 | 439 | } |
fd0b3ff7 | 440 | } |
1da177e4 | 441 | |
fd0b3ff7 MH |
442 | /* Must be called on unlocked socket. */ |
443 | static void sco_sock_close(struct sock *sk) | |
444 | { | |
445 | sco_sock_clear_timer(sk); | |
446 | lock_sock(sk); | |
447 | __sco_sock_close(sk); | |
1da177e4 | 448 | release_sock(sk); |
1da177e4 LT |
449 | sco_sock_kill(sk); |
450 | } | |
451 | ||
452 | static void sco_sock_init(struct sock *sk, struct sock *parent) | |
453 | { | |
454 | BT_DBG("sk %p", sk); | |
455 | ||
6230c9b4 | 456 | if (parent) { |
1da177e4 | 457 | sk->sk_type = parent->sk_type; |
20714bfe | 458 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
6230c9b4 PM |
459 | security_sk_clone(parent, sk); |
460 | } | |
1da177e4 LT |
461 | } |
462 | ||
463 | static struct proto sco_proto = { | |
464 | .name = "SCO", | |
465 | .owner = THIS_MODULE, | |
466 | .obj_size = sizeof(struct sco_pinfo) | |
467 | }; | |
468 | ||
c4297e8f MH |
469 | static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, |
470 | int proto, gfp_t prio, int kern) | |
1da177e4 LT |
471 | { |
472 | struct sock *sk; | |
473 | ||
11aa9c28 | 474 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern); |
1da177e4 LT |
475 | if (!sk) |
476 | return NULL; | |
477 | ||
478 | sock_init_data(sock, sk); | |
479 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
480 | ||
481 | sk->sk_destruct = sco_sock_destruct; | |
482 | sk->sk_sndtimeo = SCO_CONN_TIMEOUT; | |
483 | ||
484 | sock_reset_flag(sk, SOCK_ZAPPED); | |
485 | ||
486 | sk->sk_protocol = proto; | |
487 | sk->sk_state = BT_OPEN; | |
488 | ||
ad10b1a4 FD |
489 | sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
490 | ||
e99e88a9 | 491 | timer_setup(&sk->sk_timer, sco_sock_timeout, 0); |
1da177e4 LT |
492 | |
493 | bt_sock_link(&sco_sk_list, sk); | |
494 | return sk; | |
495 | } | |
496 | ||
3f378b68 EP |
497 | static int sco_sock_create(struct net *net, struct socket *sock, int protocol, |
498 | int kern) | |
1da177e4 LT |
499 | { |
500 | struct sock *sk; | |
501 | ||
502 | BT_DBG("sock %p", sock); | |
503 | ||
504 | sock->state = SS_UNCONNECTED; | |
505 | ||
506 | if (sock->type != SOCK_SEQPACKET) | |
507 | return -ESOCKTNOSUPPORT; | |
508 | ||
509 | sock->ops = &sco_sock_ops; | |
510 | ||
11aa9c28 | 511 | sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); |
74da626a | 512 | if (!sk) |
1da177e4 LT |
513 | return -ENOMEM; |
514 | ||
515 | sco_sock_init(sk, NULL); | |
516 | return 0; | |
517 | } | |
518 | ||
c4297e8f MH |
519 | static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, |
520 | int addr_len) | |
1da177e4 LT |
521 | { |
522 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
523 | struct sock *sk = sock->sk; | |
1da177e4 LT |
524 | int err = 0; |
525 | ||
6ed93dc6 | 526 | BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
1da177e4 | 527 | |
d2ecfa76 MJ |
528 | if (!addr || addr_len < sizeof(struct sockaddr_sco) || |
529 | addr->sa_family != AF_BLUETOOTH) | |
5233252f DM |
530 | return -EINVAL; |
531 | ||
1da177e4 LT |
532 | lock_sock(sk); |
533 | ||
534 | if (sk->sk_state != BT_OPEN) { | |
535 | err = -EBADFD; | |
536 | goto done; | |
537 | } | |
538 | ||
8ed21f7e MH |
539 | if (sk->sk_type != SOCK_SEQPACKET) { |
540 | err = -EINVAL; | |
541 | goto done; | |
1da177e4 LT |
542 | } |
543 | ||
eea96364 | 544 | bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
8ed21f7e MH |
545 | |
546 | sk->sk_state = BT_BOUND; | |
1da177e4 LT |
547 | |
548 | done: | |
549 | release_sock(sk); | |
550 | return err; | |
551 | } | |
552 | ||
553 | static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
554 | { | |
555 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
556 | struct sock *sk = sock->sk; | |
92f185c8 | 557 | int err; |
1da177e4 LT |
558 | |
559 | BT_DBG("sk %p", sk); | |
560 | ||
6503d961 CG |
561 | if (alen < sizeof(struct sockaddr_sco) || |
562 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
563 | return -EINVAL; |
564 | ||
565 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) | |
566 | return -EBADFD; | |
567 | ||
568 | if (sk->sk_type != SOCK_SEQPACKET) | |
569 | return -EINVAL; | |
570 | ||
571 | lock_sock(sk); | |
572 | ||
573 | /* Set destination address and psm */ | |
eea96364 | 574 | bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
1da177e4 | 575 | |
735cbc47 AE |
576 | err = sco_connect(sk); |
577 | if (err) | |
1da177e4 LT |
578 | goto done; |
579 | ||
8e87d142 | 580 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99 | 581 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4 LT |
582 | |
583 | done: | |
584 | release_sock(sk); | |
585 | return err; | |
586 | } | |
587 | ||
588 | static int sco_sock_listen(struct socket *sock, int backlog) | |
589 | { | |
590 | struct sock *sk = sock->sk; | |
eea96364 | 591 | bdaddr_t *src = &sco_pi(sk)->src; |
1da177e4 LT |
592 | int err = 0; |
593 | ||
594 | BT_DBG("sk %p backlog %d", sk, backlog); | |
595 | ||
596 | lock_sock(sk); | |
597 | ||
7d5d775a | 598 | if (sk->sk_state != BT_BOUND) { |
1da177e4 LT |
599 | err = -EBADFD; |
600 | goto done; | |
601 | } | |
602 | ||
7d5d775a MH |
603 | if (sk->sk_type != SOCK_SEQPACKET) { |
604 | err = -EINVAL; | |
605 | goto done; | |
606 | } | |
607 | ||
fb334059 MH |
608 | write_lock(&sco_sk_list.lock); |
609 | ||
610 | if (__sco_get_sock_listen_by_addr(src)) { | |
611 | err = -EADDRINUSE; | |
612 | goto unlock; | |
613 | } | |
614 | ||
1da177e4 LT |
615 | sk->sk_max_ack_backlog = backlog; |
616 | sk->sk_ack_backlog = 0; | |
fb334059 | 617 | |
1da177e4 LT |
618 | sk->sk_state = BT_LISTEN; |
619 | ||
fb334059 MH |
620 | unlock: |
621 | write_unlock(&sco_sk_list.lock); | |
622 | ||
1da177e4 LT |
623 | done: |
624 | release_sock(sk); | |
625 | return err; | |
626 | } | |
627 | ||
c4297e8f | 628 | static int sco_sock_accept(struct socket *sock, struct socket *newsock, |
cdfbabfb | 629 | int flags, bool kern) |
1da177e4 | 630 | { |
dfb2fae7 | 631 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4 LT |
632 | struct sock *sk = sock->sk, *ch; |
633 | long timeo; | |
634 | int err = 0; | |
635 | ||
636 | lock_sock(sk); | |
637 | ||
1da177e4 LT |
638 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
639 | ||
640 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
641 | ||
642 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 643 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3c | 644 | while (1) { |
552b0d3c PH |
645 | if (sk->sk_state != BT_LISTEN) { |
646 | err = -EBADFD; | |
1da177e4 LT |
647 | break; |
648 | } | |
649 | ||
552b0d3c PH |
650 | ch = bt_accept_dequeue(sk, newsock); |
651 | if (ch) | |
652 | break; | |
1da177e4 | 653 | |
552b0d3c PH |
654 | if (!timeo) { |
655 | err = -EAGAIN; | |
1da177e4 LT |
656 | break; |
657 | } | |
658 | ||
659 | if (signal_pending(current)) { | |
660 | err = sock_intr_errno(timeo); | |
661 | break; | |
662 | } | |
552b0d3c PH |
663 | |
664 | release_sock(sk); | |
dfb2fae7 PH |
665 | |
666 | timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); | |
552b0d3c | 667 | lock_sock(sk); |
1da177e4 | 668 | } |
aa395145 | 669 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
670 | |
671 | if (err) | |
672 | goto done; | |
673 | ||
674 | newsock->state = SS_CONNECTED; | |
675 | ||
676 | BT_DBG("new socket %p", ch); | |
677 | ||
678 | done: | |
679 | release_sock(sk); | |
680 | return err; | |
681 | } | |
682 | ||
c4297e8f MH |
683 | static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, |
684 | int *len, int peer) | |
1da177e4 LT |
685 | { |
686 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
687 | struct sock *sk = sock->sk; | |
688 | ||
689 | BT_DBG("sock %p, sk %p", sock, sk); | |
690 | ||
691 | addr->sa_family = AF_BLUETOOTH; | |
692 | *len = sizeof(struct sockaddr_sco); | |
693 | ||
694 | if (peer) | |
eea96364 | 695 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
1da177e4 | 696 | else |
eea96364 | 697 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
1da177e4 LT |
698 | |
699 | return 0; | |
700 | } | |
701 | ||
1b784140 YX |
702 | static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
703 | size_t len) | |
1da177e4 LT |
704 | { |
705 | struct sock *sk = sock->sk; | |
b9dbdbc1 | 706 | int err; |
1da177e4 LT |
707 | |
708 | BT_DBG("sock %p, sk %p", sock, sk); | |
709 | ||
c1cbe4b7 BL |
710 | err = sock_error(sk); |
711 | if (err) | |
712 | return err; | |
1da177e4 LT |
713 | |
714 | if (msg->msg_flags & MSG_OOB) | |
715 | return -EOPNOTSUPP; | |
716 | ||
717 | lock_sock(sk); | |
718 | ||
719 | if (sk->sk_state == BT_CONNECTED) | |
720 | err = sco_send_frame(sk, msg, len); | |
721 | else | |
722 | err = -ENOTCONN; | |
723 | ||
724 | release_sock(sk); | |
725 | return err; | |
726 | } | |
727 | ||
2f69a82a | 728 | static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
fa5513be FD |
729 | { |
730 | struct hci_dev *hdev = conn->hdev; | |
731 | ||
732 | BT_DBG("conn %p", conn); | |
733 | ||
734 | conn->state = BT_CONFIG; | |
735 | ||
736 | if (!lmp_esco_capable(hdev)) { | |
737 | struct hci_cp_accept_conn_req cp; | |
738 | ||
739 | bacpy(&cp.bdaddr, &conn->dst); | |
33f24048 | 740 | cp.role = 0x00; /* Ignored */ |
fa5513be FD |
741 | |
742 | hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); | |
743 | } else { | |
744 | struct hci_cp_accept_sync_conn_req cp; | |
745 | ||
746 | bacpy(&cp.bdaddr, &conn->dst); | |
747 | cp.pkt_type = cpu_to_le16(conn->pkt_type); | |
748 | ||
dcf4adbf JP |
749 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
750 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
2f69a82a FD |
751 | cp.content_format = cpu_to_le16(setting); |
752 | ||
753 | switch (setting & SCO_AIRMODE_MASK) { | |
754 | case SCO_AIRMODE_TRANSP: | |
755 | if (conn->pkt_type & ESCO_2EV3) | |
dcf4adbf | 756 | cp.max_latency = cpu_to_le16(0x0008); |
2f69a82a | 757 | else |
dcf4adbf | 758 | cp.max_latency = cpu_to_le16(0x000D); |
2f69a82a FD |
759 | cp.retrans_effort = 0x02; |
760 | break; | |
761 | case SCO_AIRMODE_CVSD: | |
dcf4adbf | 762 | cp.max_latency = cpu_to_le16(0xffff); |
2f69a82a FD |
763 | cp.retrans_effort = 0xff; |
764 | break; | |
765 | } | |
fa5513be FD |
766 | |
767 | hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, | |
768 | sizeof(cp), &cp); | |
769 | } | |
770 | } | |
771 | ||
1b784140 YX |
772 | static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
773 | size_t len, int flags) | |
20714bfe FD |
774 | { |
775 | struct sock *sk = sock->sk; | |
776 | struct sco_pinfo *pi = sco_pi(sk); | |
777 | ||
778 | lock_sock(sk); | |
779 | ||
780 | if (sk->sk_state == BT_CONNECT2 && | |
781 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { | |
2f69a82a | 782 | sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
20714bfe FD |
783 | sk->sk_state = BT_CONFIG; |
784 | ||
785 | release_sock(sk); | |
786 | return 0; | |
787 | } | |
788 | ||
789 | release_sock(sk); | |
790 | ||
1b784140 | 791 | return bt_sock_recvmsg(sock, msg, len, flags); |
20714bfe FD |
792 | } |
793 | ||
c4297e8f MH |
794 | static int sco_sock_setsockopt(struct socket *sock, int level, int optname, |
795 | char __user *optval, unsigned int optlen) | |
1da177e4 LT |
796 | { |
797 | struct sock *sk = sock->sk; | |
ad10b1a4 FD |
798 | int len, err = 0; |
799 | struct bt_voice voice; | |
b96e9c67 | 800 | u32 opt; |
1da177e4 LT |
801 | |
802 | BT_DBG("sk %p", sk); | |
803 | ||
804 | lock_sock(sk); | |
805 | ||
806 | switch (optname) { | |
b96e9c67 FD |
807 | |
808 | case BT_DEFER_SETUP: | |
809 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
810 | err = -EINVAL; | |
811 | break; | |
812 | } | |
813 | ||
814 | if (get_user(opt, (u32 __user *) optval)) { | |
815 | err = -EFAULT; | |
816 | break; | |
817 | } | |
818 | ||
819 | if (opt) | |
820 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
821 | else | |
822 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
823 | break; | |
824 | ||
ad10b1a4 FD |
825 | case BT_VOICE: |
826 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
827 | sk->sk_state != BT_CONNECT2) { | |
828 | err = -EINVAL; | |
829 | break; | |
830 | } | |
831 | ||
832 | voice.setting = sco_pi(sk)->setting; | |
833 | ||
834 | len = min_t(unsigned int, sizeof(voice), optlen); | |
c4297e8f | 835 | if (copy_from_user((char *)&voice, optval, len)) { |
ad10b1a4 FD |
836 | err = -EFAULT; |
837 | break; | |
838 | } | |
839 | ||
840 | /* Explicitly check for these values */ | |
841 | if (voice.setting != BT_VOICE_TRANSPARENT && | |
842 | voice.setting != BT_VOICE_CVSD_16BIT) { | |
843 | err = -EINVAL; | |
844 | break; | |
845 | } | |
846 | ||
847 | sco_pi(sk)->setting = voice.setting; | |
848 | break; | |
849 | ||
1da177e4 LT |
850 | default: |
851 | err = -ENOPROTOOPT; | |
852 | break; | |
853 | } | |
854 | ||
855 | release_sock(sk); | |
856 | return err; | |
857 | } | |
858 | ||
c4297e8f MH |
859 | static int sco_sock_getsockopt_old(struct socket *sock, int optname, |
860 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
861 | { |
862 | struct sock *sk = sock->sk; | |
863 | struct sco_options opts; | |
864 | struct sco_conninfo cinfo; | |
8e87d142 | 865 | int len, err = 0; |
1da177e4 LT |
866 | |
867 | BT_DBG("sk %p", sk); | |
868 | ||
869 | if (get_user(len, optlen)) | |
870 | return -EFAULT; | |
871 | ||
872 | lock_sock(sk); | |
873 | ||
874 | switch (optname) { | |
875 | case SCO_OPTIONS: | |
9d225d22 JH |
876 | if (sk->sk_state != BT_CONNECTED && |
877 | !(sk->sk_state == BT_CONNECT2 && | |
878 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
879 | err = -ENOTCONN; |
880 | break; | |
881 | } | |
882 | ||
883 | opts.mtu = sco_pi(sk)->conn->mtu; | |
884 | ||
885 | BT_DBG("mtu %d", opts.mtu); | |
886 | ||
887 | len = min_t(unsigned int, len, sizeof(opts)); | |
888 | if (copy_to_user(optval, (char *)&opts, len)) | |
889 | err = -EFAULT; | |
890 | ||
891 | break; | |
892 | ||
893 | case SCO_CONNINFO: | |
9d225d22 JH |
894 | if (sk->sk_state != BT_CONNECTED && |
895 | !(sk->sk_state == BT_CONNECT2 && | |
896 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
897 | err = -ENOTCONN; |
898 | break; | |
899 | } | |
900 | ||
c4c896e1 | 901 | memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4 LT |
902 | cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; |
903 | memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); | |
904 | ||
905 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
906 | if (copy_to_user(optval, (char *)&cinfo, len)) | |
907 | err = -EFAULT; | |
908 | ||
909 | break; | |
910 | ||
911 | default: | |
912 | err = -ENOPROTOOPT; | |
913 | break; | |
914 | } | |
915 | ||
916 | release_sock(sk); | |
917 | return err; | |
918 | } | |
919 | ||
c4297e8f MH |
920 | static int sco_sock_getsockopt(struct socket *sock, int level, int optname, |
921 | char __user *optval, int __user *optlen) | |
d58daf42 MH |
922 | { |
923 | struct sock *sk = sock->sk; | |
924 | int len, err = 0; | |
ad10b1a4 | 925 | struct bt_voice voice; |
d58daf42 MH |
926 | |
927 | BT_DBG("sk %p", sk); | |
928 | ||
929 | if (level == SOL_SCO) | |
930 | return sco_sock_getsockopt_old(sock, optname, optval, optlen); | |
931 | ||
932 | if (get_user(len, optlen)) | |
933 | return -EFAULT; | |
934 | ||
935 | lock_sock(sk); | |
936 | ||
937 | switch (optname) { | |
b96e9c67 FD |
938 | |
939 | case BT_DEFER_SETUP: | |
940 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
941 | err = -EINVAL; | |
942 | break; | |
943 | } | |
944 | ||
945 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), | |
c4297e8f | 946 | (u32 __user *)optval)) |
b96e9c67 FD |
947 | err = -EFAULT; |
948 | ||
949 | break; | |
950 | ||
ad10b1a4 FD |
951 | case BT_VOICE: |
952 | voice.setting = sco_pi(sk)->setting; | |
953 | ||
954 | len = min_t(unsigned int, len, sizeof(voice)); | |
955 | if (copy_to_user(optval, (char *)&voice, len)) | |
956 | err = -EFAULT; | |
957 | ||
958 | break; | |
959 | ||
d58daf42 MH |
960 | default: |
961 | err = -ENOPROTOOPT; | |
962 | break; | |
963 | } | |
964 | ||
965 | release_sock(sk); | |
966 | return err; | |
967 | } | |
968 | ||
fd0b3ff7 MH |
969 | static int sco_sock_shutdown(struct socket *sock, int how) |
970 | { | |
971 | struct sock *sk = sock->sk; | |
972 | int err = 0; | |
973 | ||
974 | BT_DBG("sock %p, sk %p", sock, sk); | |
975 | ||
976 | if (!sk) | |
977 | return 0; | |
978 | ||
1da5537e | 979 | sock_hold(sk); |
fd0b3ff7 | 980 | lock_sock(sk); |
1da5537e | 981 | |
fd0b3ff7 MH |
982 | if (!sk->sk_shutdown) { |
983 | sk->sk_shutdown = SHUTDOWN_MASK; | |
984 | sco_sock_clear_timer(sk); | |
985 | __sco_sock_close(sk); | |
986 | ||
093facf3 VD |
987 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
988 | !(current->flags & PF_EXITING)) | |
fd0b3ff7 | 989 | err = bt_sock_wait_state(sk, BT_CLOSED, |
be7c2b99 | 990 | sk->sk_lingertime); |
fd0b3ff7 | 991 | } |
1da5537e | 992 | |
fd0b3ff7 | 993 | release_sock(sk); |
1da5537e KP |
994 | sock_put(sk); |
995 | ||
fd0b3ff7 MH |
996 | return err; |
997 | } | |
998 | ||
1da177e4 LT |
999 | static int sco_sock_release(struct socket *sock) |
1000 | { | |
1001 | struct sock *sk = sock->sk; | |
1002 | int err = 0; | |
1003 | ||
1004 | BT_DBG("sock %p, sk %p", sock, sk); | |
1005 | ||
1006 | if (!sk) | |
1007 | return 0; | |
1008 | ||
1009 | sco_sock_close(sk); | |
1010 | ||
093facf3 VD |
1011 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
1012 | !(current->flags & PF_EXITING)) { | |
1da177e4 LT |
1013 | lock_sock(sk); |
1014 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
1015 | release_sock(sk); | |
1016 | } | |
1017 | ||
1018 | sock_orphan(sk); | |
1019 | sco_sock_kill(sk); | |
1020 | return err; | |
1021 | } | |
1022 | ||
1da177e4 LT |
1023 | static void sco_conn_ready(struct sco_conn *conn) |
1024 | { | |
735cbc47 AE |
1025 | struct sock *parent; |
1026 | struct sock *sk = conn->sk; | |
1da177e4 LT |
1027 | |
1028 | BT_DBG("conn %p", conn); | |
1029 | ||
735cbc47 | 1030 | if (sk) { |
1da177e4 LT |
1031 | sco_sock_clear_timer(sk); |
1032 | bh_lock_sock(sk); | |
1033 | sk->sk_state = BT_CONNECTED; | |
1034 | sk->sk_state_change(sk); | |
1035 | bh_unlock_sock(sk); | |
1036 | } else { | |
40528088 AG |
1037 | sco_conn_lock(conn); |
1038 | ||
2c501cdd KP |
1039 | if (!conn->hcon) { |
1040 | sco_conn_unlock(conn); | |
1041 | return; | |
1042 | } | |
1043 | ||
041987cf | 1044 | parent = sco_get_sock_listen(&conn->hcon->src); |
40528088 AG |
1045 | if (!parent) { |
1046 | sco_conn_unlock(conn); | |
1047 | return; | |
1048 | } | |
1da177e4 LT |
1049 | |
1050 | bh_lock_sock(parent); | |
1051 | ||
b9dbdbc1 | 1052 | sk = sco_sock_alloc(sock_net(parent), NULL, |
11aa9c28 | 1053 | BTPROTO_SCO, GFP_ATOMIC, 0); |
1da177e4 LT |
1054 | if (!sk) { |
1055 | bh_unlock_sock(parent); | |
40528088 AG |
1056 | sco_conn_unlock(conn); |
1057 | return; | |
1da177e4 LT |
1058 | } |
1059 | ||
1060 | sco_sock_init(sk, parent); | |
1061 | ||
eea96364 MH |
1062 | bacpy(&sco_pi(sk)->src, &conn->hcon->src); |
1063 | bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); | |
1da177e4 LT |
1064 | |
1065 | hci_conn_hold(conn->hcon); | |
1066 | __sco_chan_add(conn, sk, parent); | |
1067 | ||
20714bfe FD |
1068 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
1069 | sk->sk_state = BT_CONNECT2; | |
1070 | else | |
1071 | sk->sk_state = BT_CONNECTED; | |
1da177e4 LT |
1072 | |
1073 | /* Wake up parent */ | |
676d2369 | 1074 | parent->sk_data_ready(parent); |
1da177e4 LT |
1075 | |
1076 | bh_unlock_sock(parent); | |
1da177e4 | 1077 | |
40528088 AG |
1078 | sco_conn_unlock(conn); |
1079 | } | |
1da177e4 LT |
1080 | } |
1081 | ||
1082 | /* ----- SCO interface with lower layer (HCI) ----- */ | |
20714bfe | 1083 | int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4 | 1084 | { |
fc5fef61 | 1085 | struct sock *sk; |
71aeeaa1 MH |
1086 | int lm = 0; |
1087 | ||
6ed93dc6 | 1088 | BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4 | 1089 | |
71aeeaa1 MH |
1090 | /* Find listening sockets */ |
1091 | read_lock(&sco_sk_list.lock); | |
b67bfe0d | 1092 | sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1 MH |
1093 | if (sk->sk_state != BT_LISTEN) |
1094 | continue; | |
1095 | ||
eea96364 MH |
1096 | if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || |
1097 | !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { | |
71aeeaa1 | 1098 | lm |= HCI_LM_ACCEPT; |
20714bfe FD |
1099 | |
1100 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) | |
1101 | *flags |= HCI_PROTO_DEFER; | |
71aeeaa1 MH |
1102 | break; |
1103 | } | |
1104 | } | |
1105 | read_unlock(&sco_sk_list.lock); | |
1106 | ||
1107 | return lm; | |
1da177e4 LT |
1108 | } |
1109 | ||
539c496d | 1110 | static void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4 | 1111 | { |
539c496d JH |
1112 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1113 | return; | |
1114 | ||
6ed93dc6 | 1115 | BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status); |
539c496d | 1116 | |
1da177e4 LT |
1117 | if (!status) { |
1118 | struct sco_conn *conn; | |
1119 | ||
519e42b3 | 1120 | conn = sco_conn_add(hcon); |
1da177e4 LT |
1121 | if (conn) |
1122 | sco_conn_ready(conn); | |
8e87d142 | 1123 | } else |
e175072f | 1124 | sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4 LT |
1125 | } |
1126 | ||
3a6d576b | 1127 | static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4 | 1128 | { |
3a6d576b JH |
1129 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1130 | return; | |
1131 | ||
1da177e4 LT |
1132 | BT_DBG("hcon %p reason %d", hcon, reason); |
1133 | ||
e175072f | 1134 | sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4 LT |
1135 | } |
1136 | ||
9b4c3336 | 1137 | void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4 LT |
1138 | { |
1139 | struct sco_conn *conn = hcon->sco_data; | |
1140 | ||
1141 | if (!conn) | |
1142 | goto drop; | |
1143 | ||
1144 | BT_DBG("conn %p len %d", conn, skb->len); | |
1145 | ||
1146 | if (skb->len) { | |
1147 | sco_recv_frame(conn, skb); | |
9b4c3336 | 1148 | return; |
1da177e4 LT |
1149 | } |
1150 | ||
1151 | drop: | |
8e87d142 | 1152 | kfree_skb(skb); |
1da177e4 LT |
1153 | } |
1154 | ||
539c496d JH |
1155 | static struct hci_cb sco_cb = { |
1156 | .name = "SCO", | |
1157 | .connect_cfm = sco_connect_cfm, | |
3a6d576b | 1158 | .disconn_cfm = sco_disconn_cfm, |
539c496d JH |
1159 | }; |
1160 | ||
aef7d97c | 1161 | static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1162 | { |
1163 | struct sock *sk; | |
1da177e4 | 1164 | |
ee65d19e | 1165 | read_lock(&sco_sk_list.lock); |
1da177e4 | 1166 | |
b67bfe0d | 1167 | sk_for_each(sk, &sco_sk_list.head) { |
eea96364 MH |
1168 | seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src, |
1169 | &sco_pi(sk)->dst, sk->sk_state); | |
be9d1227 | 1170 | } |
1da177e4 | 1171 | |
ee65d19e | 1172 | read_unlock(&sco_sk_list.lock); |
1da177e4 | 1173 | |
aef7d97c | 1174 | return 0; |
1da177e4 LT |
1175 | } |
1176 | ||
aef7d97c MH |
1177 | static int sco_debugfs_open(struct inode *inode, struct file *file) |
1178 | { | |
1179 | return single_open(file, sco_debugfs_show, inode->i_private); | |
1180 | } | |
1181 | ||
1182 | static const struct file_operations sco_debugfs_fops = { | |
1183 | .open = sco_debugfs_open, | |
1184 | .read = seq_read, | |
1185 | .llseek = seq_lseek, | |
1186 | .release = single_release, | |
1187 | }; | |
1188 | ||
1189 | static struct dentry *sco_debugfs; | |
1da177e4 | 1190 | |
90ddc4f0 | 1191 | static const struct proto_ops sco_sock_ops = { |
1da177e4 LT |
1192 | .family = PF_BLUETOOTH, |
1193 | .owner = THIS_MODULE, | |
1194 | .release = sco_sock_release, | |
1195 | .bind = sco_sock_bind, | |
1196 | .connect = sco_sock_connect, | |
1197 | .listen = sco_sock_listen, | |
1198 | .accept = sco_sock_accept, | |
1199 | .getname = sco_sock_getname, | |
1200 | .sendmsg = sco_sock_sendmsg, | |
20714bfe | 1201 | .recvmsg = sco_sock_recvmsg, |
1da177e4 | 1202 | .poll = bt_sock_poll, |
3241ad82 | 1203 | .ioctl = bt_sock_ioctl, |
1da177e4 LT |
1204 | .mmap = sock_no_mmap, |
1205 | .socketpair = sock_no_socketpair, | |
fd0b3ff7 | 1206 | .shutdown = sco_sock_shutdown, |
1da177e4 LT |
1207 | .setsockopt = sco_sock_setsockopt, |
1208 | .getsockopt = sco_sock_getsockopt | |
1209 | }; | |
1210 | ||
ec1b4cf7 | 1211 | static const struct net_proto_family sco_sock_family_ops = { |
1da177e4 LT |
1212 | .family = PF_BLUETOOTH, |
1213 | .owner = THIS_MODULE, | |
1214 | .create = sco_sock_create, | |
1215 | }; | |
1216 | ||
64274518 | 1217 | int __init sco_init(void) |
1da177e4 LT |
1218 | { |
1219 | int err; | |
1220 | ||
15762fa7 MH |
1221 | BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr)); |
1222 | ||
1da177e4 LT |
1223 | err = proto_register(&sco_proto, 0); |
1224 | if (err < 0) | |
1225 | return err; | |
1226 | ||
1227 | err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); | |
1228 | if (err < 0) { | |
1229 | BT_ERR("SCO socket registration failed"); | |
1230 | goto error; | |
1231 | } | |
1232 | ||
b0316615 | 1233 | err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212 MY |
1234 | if (err < 0) { |
1235 | BT_ERR("Failed to create SCO proc file"); | |
1236 | bt_sock_unregister(BTPROTO_SCO); | |
1237 | goto error; | |
1238 | } | |
1239 | ||
1da177e4 LT |
1240 | BT_INFO("SCO socket layer initialized"); |
1241 | ||
539c496d JH |
1242 | hci_register_cb(&sco_cb); |
1243 | ||
1120e4bf MH |
1244 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1245 | return 0; | |
1246 | ||
1247 | sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, | |
1248 | NULL, &sco_debugfs_fops); | |
1249 | ||
1da177e4 LT |
1250 | return 0; |
1251 | ||
1252 | error: | |
1253 | proto_unregister(&sco_proto); | |
1254 | return err; | |
1255 | } | |
1256 | ||
0402d9f2 | 1257 | void sco_exit(void) |
1da177e4 | 1258 | { |
de9b9212 MY |
1259 | bt_procfs_cleanup(&init_net, "sco"); |
1260 | ||
aef7d97c | 1261 | debugfs_remove(sco_debugfs); |
1da177e4 | 1262 | |
539c496d JH |
1263 | hci_unregister_cb(&sco_cb); |
1264 | ||
5e9d7f86 | 1265 | bt_sock_unregister(BTPROTO_SCO); |
1da177e4 | 1266 | |
1da177e4 LT |
1267 | proto_unregister(&sco_proto); |
1268 | } | |
1269 | ||
7cb127d5 MH |
1270 | module_param(disable_esco, bool, 0644); |
1271 | MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |