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 | ||
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 | { | |
396 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
397 | return; | |
398 | ||
399 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
400 | ||
401 | /* Kill poor orphan */ | |
402 | bt_sock_unlink(&sco_sk_list, sk); | |
403 | sock_set_flag(sk, SOCK_DEAD); | |
404 | sock_put(sk); | |
405 | } | |
406 | ||
fd0b3ff7 | 407 | static void __sco_sock_close(struct sock *sk) |
1da177e4 | 408 | { |
fd0b3ff7 | 409 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
1da177e4 LT |
410 | |
411 | switch (sk->sk_state) { | |
412 | case BT_LISTEN: | |
413 | sco_sock_cleanup_listen(sk); | |
414 | break; | |
415 | ||
416 | case BT_CONNECTED: | |
417 | case BT_CONFIG: | |
b7e98b51 | 418 | if (sco_pi(sk)->conn->hcon) { |
4a77708b LAD |
419 | sk->sk_state = BT_DISCONN; |
420 | sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); | |
435c5133 | 421 | sco_conn_lock(sco_pi(sk)->conn); |
76a68ba0 | 422 | hci_conn_drop(sco_pi(sk)->conn->hcon); |
4a77708b | 423 | sco_pi(sk)->conn->hcon = NULL; |
435c5133 | 424 | sco_conn_unlock(sco_pi(sk)->conn); |
4a77708b LAD |
425 | } else |
426 | sco_chan_del(sk, ECONNRESET); | |
427 | break; | |
428 | ||
eb20ff9c | 429 | case BT_CONNECT2: |
1da177e4 LT |
430 | case BT_CONNECT: |
431 | case BT_DISCONN: | |
432 | sco_chan_del(sk, ECONNRESET); | |
433 | break; | |
434 | ||
435 | default: | |
436 | sock_set_flag(sk, SOCK_ZAPPED); | |
437 | break; | |
3ff50b79 | 438 | } |
fd0b3ff7 | 439 | } |
1da177e4 | 440 | |
fd0b3ff7 MH |
441 | /* Must be called on unlocked socket. */ |
442 | static void sco_sock_close(struct sock *sk) | |
443 | { | |
444 | sco_sock_clear_timer(sk); | |
445 | lock_sock(sk); | |
446 | __sco_sock_close(sk); | |
1da177e4 | 447 | release_sock(sk); |
1da177e4 LT |
448 | sco_sock_kill(sk); |
449 | } | |
450 | ||
451 | static void sco_sock_init(struct sock *sk, struct sock *parent) | |
452 | { | |
453 | BT_DBG("sk %p", sk); | |
454 | ||
6230c9b4 | 455 | if (parent) { |
1da177e4 | 456 | sk->sk_type = parent->sk_type; |
20714bfe | 457 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
6230c9b4 PM |
458 | security_sk_clone(parent, sk); |
459 | } | |
1da177e4 LT |
460 | } |
461 | ||
462 | static struct proto sco_proto = { | |
463 | .name = "SCO", | |
464 | .owner = THIS_MODULE, | |
465 | .obj_size = sizeof(struct sco_pinfo) | |
466 | }; | |
467 | ||
c4297e8f MH |
468 | static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, |
469 | int proto, gfp_t prio, int kern) | |
1da177e4 LT |
470 | { |
471 | struct sock *sk; | |
472 | ||
11aa9c28 | 473 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern); |
1da177e4 LT |
474 | if (!sk) |
475 | return NULL; | |
476 | ||
477 | sock_init_data(sock, sk); | |
478 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
479 | ||
480 | sk->sk_destruct = sco_sock_destruct; | |
481 | sk->sk_sndtimeo = SCO_CONN_TIMEOUT; | |
482 | ||
483 | sock_reset_flag(sk, SOCK_ZAPPED); | |
484 | ||
485 | sk->sk_protocol = proto; | |
486 | sk->sk_state = BT_OPEN; | |
487 | ||
ad10b1a4 FD |
488 | sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
489 | ||
e99e88a9 | 490 | timer_setup(&sk->sk_timer, sco_sock_timeout, 0); |
1da177e4 LT |
491 | |
492 | bt_sock_link(&sco_sk_list, sk); | |
493 | return sk; | |
494 | } | |
495 | ||
3f378b68 EP |
496 | static int sco_sock_create(struct net *net, struct socket *sock, int protocol, |
497 | int kern) | |
1da177e4 LT |
498 | { |
499 | struct sock *sk; | |
500 | ||
501 | BT_DBG("sock %p", sock); | |
502 | ||
503 | sock->state = SS_UNCONNECTED; | |
504 | ||
505 | if (sock->type != SOCK_SEQPACKET) | |
506 | return -ESOCKTNOSUPPORT; | |
507 | ||
508 | sock->ops = &sco_sock_ops; | |
509 | ||
11aa9c28 | 510 | sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); |
74da626a | 511 | if (!sk) |
1da177e4 LT |
512 | return -ENOMEM; |
513 | ||
514 | sco_sock_init(sk, NULL); | |
515 | return 0; | |
516 | } | |
517 | ||
c4297e8f MH |
518 | static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, |
519 | int addr_len) | |
1da177e4 LT |
520 | { |
521 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
522 | struct sock *sk = sock->sk; | |
1da177e4 LT |
523 | int err = 0; |
524 | ||
6ed93dc6 | 525 | BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
1da177e4 | 526 | |
d2ecfa76 MJ |
527 | if (!addr || addr_len < sizeof(struct sockaddr_sco) || |
528 | addr->sa_family != AF_BLUETOOTH) | |
5233252f DM |
529 | return -EINVAL; |
530 | ||
1da177e4 LT |
531 | lock_sock(sk); |
532 | ||
533 | if (sk->sk_state != BT_OPEN) { | |
534 | err = -EBADFD; | |
535 | goto done; | |
536 | } | |
537 | ||
8ed21f7e MH |
538 | if (sk->sk_type != SOCK_SEQPACKET) { |
539 | err = -EINVAL; | |
540 | goto done; | |
1da177e4 LT |
541 | } |
542 | ||
eea96364 | 543 | bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
8ed21f7e MH |
544 | |
545 | sk->sk_state = BT_BOUND; | |
1da177e4 LT |
546 | |
547 | done: | |
548 | release_sock(sk); | |
549 | return err; | |
550 | } | |
551 | ||
552 | static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
553 | { | |
554 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
555 | struct sock *sk = sock->sk; | |
92f185c8 | 556 | int err; |
1da177e4 LT |
557 | |
558 | BT_DBG("sk %p", sk); | |
559 | ||
6503d961 CG |
560 | if (alen < sizeof(struct sockaddr_sco) || |
561 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
562 | return -EINVAL; |
563 | ||
564 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) | |
565 | return -EBADFD; | |
566 | ||
567 | if (sk->sk_type != SOCK_SEQPACKET) | |
568 | return -EINVAL; | |
569 | ||
570 | lock_sock(sk); | |
571 | ||
572 | /* Set destination address and psm */ | |
eea96364 | 573 | bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
1da177e4 | 574 | |
735cbc47 AE |
575 | err = sco_connect(sk); |
576 | if (err) | |
1da177e4 LT |
577 | goto done; |
578 | ||
8e87d142 | 579 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99 | 580 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4 LT |
581 | |
582 | done: | |
583 | release_sock(sk); | |
584 | return err; | |
585 | } | |
586 | ||
587 | static int sco_sock_listen(struct socket *sock, int backlog) | |
588 | { | |
589 | struct sock *sk = sock->sk; | |
eea96364 | 590 | bdaddr_t *src = &sco_pi(sk)->src; |
1da177e4 LT |
591 | int err = 0; |
592 | ||
593 | BT_DBG("sk %p backlog %d", sk, backlog); | |
594 | ||
595 | lock_sock(sk); | |
596 | ||
7d5d775a | 597 | if (sk->sk_state != BT_BOUND) { |
1da177e4 LT |
598 | err = -EBADFD; |
599 | goto done; | |
600 | } | |
601 | ||
7d5d775a MH |
602 | if (sk->sk_type != SOCK_SEQPACKET) { |
603 | err = -EINVAL; | |
604 | goto done; | |
605 | } | |
606 | ||
fb334059 MH |
607 | write_lock(&sco_sk_list.lock); |
608 | ||
609 | if (__sco_get_sock_listen_by_addr(src)) { | |
610 | err = -EADDRINUSE; | |
611 | goto unlock; | |
612 | } | |
613 | ||
1da177e4 LT |
614 | sk->sk_max_ack_backlog = backlog; |
615 | sk->sk_ack_backlog = 0; | |
fb334059 | 616 | |
1da177e4 LT |
617 | sk->sk_state = BT_LISTEN; |
618 | ||
fb334059 MH |
619 | unlock: |
620 | write_unlock(&sco_sk_list.lock); | |
621 | ||
1da177e4 LT |
622 | done: |
623 | release_sock(sk); | |
624 | return err; | |
625 | } | |
626 | ||
c4297e8f | 627 | static int sco_sock_accept(struct socket *sock, struct socket *newsock, |
cdfbabfb | 628 | int flags, bool kern) |
1da177e4 | 629 | { |
dfb2fae7 | 630 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4 LT |
631 | struct sock *sk = sock->sk, *ch; |
632 | long timeo; | |
633 | int err = 0; | |
634 | ||
635 | lock_sock(sk); | |
636 | ||
1da177e4 LT |
637 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
638 | ||
639 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
640 | ||
641 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 642 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3c | 643 | while (1) { |
552b0d3c PH |
644 | if (sk->sk_state != BT_LISTEN) { |
645 | err = -EBADFD; | |
1da177e4 LT |
646 | break; |
647 | } | |
648 | ||
552b0d3c PH |
649 | ch = bt_accept_dequeue(sk, newsock); |
650 | if (ch) | |
651 | break; | |
1da177e4 | 652 | |
552b0d3c PH |
653 | if (!timeo) { |
654 | err = -EAGAIN; | |
1da177e4 LT |
655 | break; |
656 | } | |
657 | ||
658 | if (signal_pending(current)) { | |
659 | err = sock_intr_errno(timeo); | |
660 | break; | |
661 | } | |
552b0d3c PH |
662 | |
663 | release_sock(sk); | |
dfb2fae7 PH |
664 | |
665 | timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); | |
552b0d3c | 666 | lock_sock(sk); |
1da177e4 | 667 | } |
aa395145 | 668 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
669 | |
670 | if (err) | |
671 | goto done; | |
672 | ||
673 | newsock->state = SS_CONNECTED; | |
674 | ||
675 | BT_DBG("new socket %p", ch); | |
676 | ||
677 | done: | |
678 | release_sock(sk); | |
679 | return err; | |
680 | } | |
681 | ||
c4297e8f | 682 | static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, |
9b2c45d4 | 683 | int peer) |
1da177e4 LT |
684 | { |
685 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
686 | struct sock *sk = sock->sk; | |
687 | ||
688 | BT_DBG("sock %p, sk %p", sock, sk); | |
689 | ||
690 | addr->sa_family = AF_BLUETOOTH; | |
1da177e4 LT |
691 | |
692 | if (peer) | |
eea96364 | 693 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
1da177e4 | 694 | else |
eea96364 | 695 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
1da177e4 | 696 | |
9b2c45d4 | 697 | return sizeof(struct sockaddr_sco); |
1da177e4 LT |
698 | } |
699 | ||
1b784140 YX |
700 | static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
701 | size_t len) | |
1da177e4 LT |
702 | { |
703 | struct sock *sk = sock->sk; | |
b9dbdbc1 | 704 | int err; |
1da177e4 LT |
705 | |
706 | BT_DBG("sock %p, sk %p", sock, sk); | |
707 | ||
c1cbe4b7 BL |
708 | err = sock_error(sk); |
709 | if (err) | |
710 | return err; | |
1da177e4 LT |
711 | |
712 | if (msg->msg_flags & MSG_OOB) | |
713 | return -EOPNOTSUPP; | |
714 | ||
715 | lock_sock(sk); | |
716 | ||
717 | if (sk->sk_state == BT_CONNECTED) | |
718 | err = sco_send_frame(sk, msg, len); | |
719 | else | |
720 | err = -ENOTCONN; | |
721 | ||
722 | release_sock(sk); | |
723 | return err; | |
724 | } | |
725 | ||
2f69a82a | 726 | static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
fa5513be FD |
727 | { |
728 | struct hci_dev *hdev = conn->hdev; | |
729 | ||
730 | BT_DBG("conn %p", conn); | |
731 | ||
732 | conn->state = BT_CONFIG; | |
733 | ||
734 | if (!lmp_esco_capable(hdev)) { | |
735 | struct hci_cp_accept_conn_req cp; | |
736 | ||
737 | bacpy(&cp.bdaddr, &conn->dst); | |
33f24048 | 738 | cp.role = 0x00; /* Ignored */ |
fa5513be FD |
739 | |
740 | hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); | |
741 | } else { | |
742 | struct hci_cp_accept_sync_conn_req cp; | |
743 | ||
744 | bacpy(&cp.bdaddr, &conn->dst); | |
745 | cp.pkt_type = cpu_to_le16(conn->pkt_type); | |
746 | ||
dcf4adbf JP |
747 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
748 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
2f69a82a FD |
749 | cp.content_format = cpu_to_le16(setting); |
750 | ||
751 | switch (setting & SCO_AIRMODE_MASK) { | |
752 | case SCO_AIRMODE_TRANSP: | |
753 | if (conn->pkt_type & ESCO_2EV3) | |
dcf4adbf | 754 | cp.max_latency = cpu_to_le16(0x0008); |
2f69a82a | 755 | else |
dcf4adbf | 756 | cp.max_latency = cpu_to_le16(0x000D); |
2f69a82a FD |
757 | cp.retrans_effort = 0x02; |
758 | break; | |
759 | case SCO_AIRMODE_CVSD: | |
dcf4adbf | 760 | cp.max_latency = cpu_to_le16(0xffff); |
2f69a82a FD |
761 | cp.retrans_effort = 0xff; |
762 | break; | |
763 | } | |
fa5513be FD |
764 | |
765 | hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, | |
766 | sizeof(cp), &cp); | |
767 | } | |
768 | } | |
769 | ||
1b784140 YX |
770 | static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
771 | size_t len, int flags) | |
20714bfe FD |
772 | { |
773 | struct sock *sk = sock->sk; | |
774 | struct sco_pinfo *pi = sco_pi(sk); | |
775 | ||
776 | lock_sock(sk); | |
777 | ||
778 | if (sk->sk_state == BT_CONNECT2 && | |
779 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { | |
2f69a82a | 780 | sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
20714bfe FD |
781 | sk->sk_state = BT_CONFIG; |
782 | ||
783 | release_sock(sk); | |
784 | return 0; | |
785 | } | |
786 | ||
787 | release_sock(sk); | |
788 | ||
1b784140 | 789 | return bt_sock_recvmsg(sock, msg, len, flags); |
20714bfe FD |
790 | } |
791 | ||
c4297e8f MH |
792 | static int sco_sock_setsockopt(struct socket *sock, int level, int optname, |
793 | char __user *optval, unsigned int optlen) | |
1da177e4 LT |
794 | { |
795 | struct sock *sk = sock->sk; | |
ad10b1a4 FD |
796 | int len, err = 0; |
797 | struct bt_voice voice; | |
b96e9c67 | 798 | u32 opt; |
1da177e4 LT |
799 | |
800 | BT_DBG("sk %p", sk); | |
801 | ||
802 | lock_sock(sk); | |
803 | ||
804 | switch (optname) { | |
b96e9c67 FD |
805 | |
806 | case BT_DEFER_SETUP: | |
807 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
808 | err = -EINVAL; | |
809 | break; | |
810 | } | |
811 | ||
812 | if (get_user(opt, (u32 __user *) optval)) { | |
813 | err = -EFAULT; | |
814 | break; | |
815 | } | |
816 | ||
817 | if (opt) | |
818 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
819 | else | |
820 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
821 | break; | |
822 | ||
ad10b1a4 FD |
823 | case BT_VOICE: |
824 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
825 | sk->sk_state != BT_CONNECT2) { | |
826 | err = -EINVAL; | |
827 | break; | |
828 | } | |
829 | ||
830 | voice.setting = sco_pi(sk)->setting; | |
831 | ||
832 | len = min_t(unsigned int, sizeof(voice), optlen); | |
c4297e8f | 833 | if (copy_from_user((char *)&voice, optval, len)) { |
ad10b1a4 FD |
834 | err = -EFAULT; |
835 | break; | |
836 | } | |
837 | ||
838 | /* Explicitly check for these values */ | |
839 | if (voice.setting != BT_VOICE_TRANSPARENT && | |
840 | voice.setting != BT_VOICE_CVSD_16BIT) { | |
841 | err = -EINVAL; | |
842 | break; | |
843 | } | |
844 | ||
845 | sco_pi(sk)->setting = voice.setting; | |
846 | break; | |
847 | ||
1da177e4 LT |
848 | default: |
849 | err = -ENOPROTOOPT; | |
850 | break; | |
851 | } | |
852 | ||
853 | release_sock(sk); | |
854 | return err; | |
855 | } | |
856 | ||
c4297e8f MH |
857 | static int sco_sock_getsockopt_old(struct socket *sock, int optname, |
858 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
859 | { |
860 | struct sock *sk = sock->sk; | |
861 | struct sco_options opts; | |
862 | struct sco_conninfo cinfo; | |
8e87d142 | 863 | int len, err = 0; |
1da177e4 LT |
864 | |
865 | BT_DBG("sk %p", sk); | |
866 | ||
867 | if (get_user(len, optlen)) | |
868 | return -EFAULT; | |
869 | ||
870 | lock_sock(sk); | |
871 | ||
872 | switch (optname) { | |
873 | case SCO_OPTIONS: | |
9d225d22 JH |
874 | if (sk->sk_state != BT_CONNECTED && |
875 | !(sk->sk_state == BT_CONNECT2 && | |
876 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
877 | err = -ENOTCONN; |
878 | break; | |
879 | } | |
880 | ||
881 | opts.mtu = sco_pi(sk)->conn->mtu; | |
882 | ||
883 | BT_DBG("mtu %d", opts.mtu); | |
884 | ||
885 | len = min_t(unsigned int, len, sizeof(opts)); | |
886 | if (copy_to_user(optval, (char *)&opts, len)) | |
887 | err = -EFAULT; | |
888 | ||
889 | break; | |
890 | ||
891 | case SCO_CONNINFO: | |
9d225d22 JH |
892 | if (sk->sk_state != BT_CONNECTED && |
893 | !(sk->sk_state == BT_CONNECT2 && | |
894 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
895 | err = -ENOTCONN; |
896 | break; | |
897 | } | |
898 | ||
c4c896e1 | 899 | memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4 LT |
900 | cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; |
901 | memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); | |
902 | ||
903 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
904 | if (copy_to_user(optval, (char *)&cinfo, len)) | |
905 | err = -EFAULT; | |
906 | ||
907 | break; | |
908 | ||
909 | default: | |
910 | err = -ENOPROTOOPT; | |
911 | break; | |
912 | } | |
913 | ||
914 | release_sock(sk); | |
915 | return err; | |
916 | } | |
917 | ||
c4297e8f MH |
918 | static int sco_sock_getsockopt(struct socket *sock, int level, int optname, |
919 | char __user *optval, int __user *optlen) | |
d58daf42 MH |
920 | { |
921 | struct sock *sk = sock->sk; | |
922 | int len, err = 0; | |
ad10b1a4 | 923 | struct bt_voice voice; |
d58daf42 MH |
924 | |
925 | BT_DBG("sk %p", sk); | |
926 | ||
927 | if (level == SOL_SCO) | |
928 | return sco_sock_getsockopt_old(sock, optname, optval, optlen); | |
929 | ||
930 | if (get_user(len, optlen)) | |
931 | return -EFAULT; | |
932 | ||
933 | lock_sock(sk); | |
934 | ||
935 | switch (optname) { | |
b96e9c67 FD |
936 | |
937 | case BT_DEFER_SETUP: | |
938 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
939 | err = -EINVAL; | |
940 | break; | |
941 | } | |
942 | ||
943 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), | |
c4297e8f | 944 | (u32 __user *)optval)) |
b96e9c67 FD |
945 | err = -EFAULT; |
946 | ||
947 | break; | |
948 | ||
ad10b1a4 FD |
949 | case BT_VOICE: |
950 | voice.setting = sco_pi(sk)->setting; | |
951 | ||
952 | len = min_t(unsigned int, len, sizeof(voice)); | |
953 | if (copy_to_user(optval, (char *)&voice, len)) | |
954 | err = -EFAULT; | |
955 | ||
956 | break; | |
957 | ||
d58daf42 MH |
958 | default: |
959 | err = -ENOPROTOOPT; | |
960 | break; | |
961 | } | |
962 | ||
963 | release_sock(sk); | |
964 | return err; | |
965 | } | |
966 | ||
fd0b3ff7 MH |
967 | static int sco_sock_shutdown(struct socket *sock, int how) |
968 | { | |
969 | struct sock *sk = sock->sk; | |
970 | int err = 0; | |
971 | ||
972 | BT_DBG("sock %p, sk %p", sock, sk); | |
973 | ||
974 | if (!sk) | |
975 | return 0; | |
976 | ||
1da5537e | 977 | sock_hold(sk); |
fd0b3ff7 | 978 | lock_sock(sk); |
1da5537e | 979 | |
fd0b3ff7 MH |
980 | if (!sk->sk_shutdown) { |
981 | sk->sk_shutdown = SHUTDOWN_MASK; | |
982 | sco_sock_clear_timer(sk); | |
983 | __sco_sock_close(sk); | |
984 | ||
093facf3 VD |
985 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
986 | !(current->flags & PF_EXITING)) | |
fd0b3ff7 | 987 | err = bt_sock_wait_state(sk, BT_CLOSED, |
be7c2b99 | 988 | sk->sk_lingertime); |
fd0b3ff7 | 989 | } |
1da5537e | 990 | |
fd0b3ff7 | 991 | release_sock(sk); |
1da5537e KP |
992 | sock_put(sk); |
993 | ||
fd0b3ff7 MH |
994 | return err; |
995 | } | |
996 | ||
1da177e4 LT |
997 | static int sco_sock_release(struct socket *sock) |
998 | { | |
999 | struct sock *sk = sock->sk; | |
1000 | int err = 0; | |
1001 | ||
1002 | BT_DBG("sock %p, sk %p", sock, sk); | |
1003 | ||
1004 | if (!sk) | |
1005 | return 0; | |
1006 | ||
1007 | sco_sock_close(sk); | |
1008 | ||
093facf3 VD |
1009 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
1010 | !(current->flags & PF_EXITING)) { | |
1da177e4 LT |
1011 | lock_sock(sk); |
1012 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
1013 | release_sock(sk); | |
1014 | } | |
1015 | ||
1016 | sock_orphan(sk); | |
1017 | sco_sock_kill(sk); | |
1018 | return err; | |
1019 | } | |
1020 | ||
1da177e4 LT |
1021 | static void sco_conn_ready(struct sco_conn *conn) |
1022 | { | |
735cbc47 AE |
1023 | struct sock *parent; |
1024 | struct sock *sk = conn->sk; | |
1da177e4 LT |
1025 | |
1026 | BT_DBG("conn %p", conn); | |
1027 | ||
735cbc47 | 1028 | if (sk) { |
1da177e4 LT |
1029 | sco_sock_clear_timer(sk); |
1030 | bh_lock_sock(sk); | |
1031 | sk->sk_state = BT_CONNECTED; | |
1032 | sk->sk_state_change(sk); | |
1033 | bh_unlock_sock(sk); | |
1034 | } else { | |
40528088 AG |
1035 | sco_conn_lock(conn); |
1036 | ||
2c501cdd KP |
1037 | if (!conn->hcon) { |
1038 | sco_conn_unlock(conn); | |
1039 | return; | |
1040 | } | |
1041 | ||
041987cf | 1042 | parent = sco_get_sock_listen(&conn->hcon->src); |
40528088 AG |
1043 | if (!parent) { |
1044 | sco_conn_unlock(conn); | |
1045 | return; | |
1046 | } | |
1da177e4 LT |
1047 | |
1048 | bh_lock_sock(parent); | |
1049 | ||
b9dbdbc1 | 1050 | sk = sco_sock_alloc(sock_net(parent), NULL, |
11aa9c28 | 1051 | BTPROTO_SCO, GFP_ATOMIC, 0); |
1da177e4 LT |
1052 | if (!sk) { |
1053 | bh_unlock_sock(parent); | |
40528088 AG |
1054 | sco_conn_unlock(conn); |
1055 | return; | |
1da177e4 LT |
1056 | } |
1057 | ||
1058 | sco_sock_init(sk, parent); | |
1059 | ||
eea96364 MH |
1060 | bacpy(&sco_pi(sk)->src, &conn->hcon->src); |
1061 | bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); | |
1da177e4 LT |
1062 | |
1063 | hci_conn_hold(conn->hcon); | |
1064 | __sco_chan_add(conn, sk, parent); | |
1065 | ||
20714bfe FD |
1066 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
1067 | sk->sk_state = BT_CONNECT2; | |
1068 | else | |
1069 | sk->sk_state = BT_CONNECTED; | |
1da177e4 LT |
1070 | |
1071 | /* Wake up parent */ | |
676d2369 | 1072 | parent->sk_data_ready(parent); |
1da177e4 LT |
1073 | |
1074 | bh_unlock_sock(parent); | |
1da177e4 | 1075 | |
40528088 AG |
1076 | sco_conn_unlock(conn); |
1077 | } | |
1da177e4 LT |
1078 | } |
1079 | ||
1080 | /* ----- SCO interface with lower layer (HCI) ----- */ | |
20714bfe | 1081 | int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4 | 1082 | { |
fc5fef61 | 1083 | struct sock *sk; |
71aeeaa1 MH |
1084 | int lm = 0; |
1085 | ||
6ed93dc6 | 1086 | BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4 | 1087 | |
71aeeaa1 MH |
1088 | /* Find listening sockets */ |
1089 | read_lock(&sco_sk_list.lock); | |
b67bfe0d | 1090 | sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1 MH |
1091 | if (sk->sk_state != BT_LISTEN) |
1092 | continue; | |
1093 | ||
eea96364 MH |
1094 | if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || |
1095 | !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { | |
71aeeaa1 | 1096 | lm |= HCI_LM_ACCEPT; |
20714bfe FD |
1097 | |
1098 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) | |
1099 | *flags |= HCI_PROTO_DEFER; | |
71aeeaa1 MH |
1100 | break; |
1101 | } | |
1102 | } | |
1103 | read_unlock(&sco_sk_list.lock); | |
1104 | ||
1105 | return lm; | |
1da177e4 LT |
1106 | } |
1107 | ||
539c496d | 1108 | static void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4 | 1109 | { |
539c496d JH |
1110 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1111 | return; | |
1112 | ||
6ed93dc6 | 1113 | BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status); |
539c496d | 1114 | |
1da177e4 LT |
1115 | if (!status) { |
1116 | struct sco_conn *conn; | |
1117 | ||
519e42b3 | 1118 | conn = sco_conn_add(hcon); |
1da177e4 LT |
1119 | if (conn) |
1120 | sco_conn_ready(conn); | |
8e87d142 | 1121 | } else |
e175072f | 1122 | sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4 LT |
1123 | } |
1124 | ||
3a6d576b | 1125 | static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4 | 1126 | { |
3a6d576b JH |
1127 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1128 | return; | |
1129 | ||
1da177e4 LT |
1130 | BT_DBG("hcon %p reason %d", hcon, reason); |
1131 | ||
e175072f | 1132 | sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4 LT |
1133 | } |
1134 | ||
9b4c3336 | 1135 | void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4 LT |
1136 | { |
1137 | struct sco_conn *conn = hcon->sco_data; | |
1138 | ||
1139 | if (!conn) | |
1140 | goto drop; | |
1141 | ||
1142 | BT_DBG("conn %p len %d", conn, skb->len); | |
1143 | ||
1144 | if (skb->len) { | |
1145 | sco_recv_frame(conn, skb); | |
9b4c3336 | 1146 | return; |
1da177e4 LT |
1147 | } |
1148 | ||
1149 | drop: | |
8e87d142 | 1150 | kfree_skb(skb); |
1da177e4 LT |
1151 | } |
1152 | ||
539c496d JH |
1153 | static struct hci_cb sco_cb = { |
1154 | .name = "SCO", | |
1155 | .connect_cfm = sco_connect_cfm, | |
3a6d576b | 1156 | .disconn_cfm = sco_disconn_cfm, |
539c496d JH |
1157 | }; |
1158 | ||
aef7d97c | 1159 | static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1160 | { |
1161 | struct sock *sk; | |
1da177e4 | 1162 | |
ee65d19e | 1163 | read_lock(&sco_sk_list.lock); |
1da177e4 | 1164 | |
b67bfe0d | 1165 | sk_for_each(sk, &sco_sk_list.head) { |
eea96364 MH |
1166 | seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src, |
1167 | &sco_pi(sk)->dst, sk->sk_state); | |
be9d1227 | 1168 | } |
1da177e4 | 1169 | |
ee65d19e | 1170 | read_unlock(&sco_sk_list.lock); |
1da177e4 | 1171 | |
aef7d97c | 1172 | return 0; |
1da177e4 LT |
1173 | } |
1174 | ||
aef7d97c MH |
1175 | static int sco_debugfs_open(struct inode *inode, struct file *file) |
1176 | { | |
1177 | return single_open(file, sco_debugfs_show, inode->i_private); | |
1178 | } | |
1179 | ||
1180 | static const struct file_operations sco_debugfs_fops = { | |
1181 | .open = sco_debugfs_open, | |
1182 | .read = seq_read, | |
1183 | .llseek = seq_lseek, | |
1184 | .release = single_release, | |
1185 | }; | |
1186 | ||
1187 | static struct dentry *sco_debugfs; | |
1da177e4 | 1188 | |
90ddc4f0 | 1189 | static const struct proto_ops sco_sock_ops = { |
1da177e4 LT |
1190 | .family = PF_BLUETOOTH, |
1191 | .owner = THIS_MODULE, | |
1192 | .release = sco_sock_release, | |
1193 | .bind = sco_sock_bind, | |
1194 | .connect = sco_sock_connect, | |
1195 | .listen = sco_sock_listen, | |
1196 | .accept = sco_sock_accept, | |
1197 | .getname = sco_sock_getname, | |
1198 | .sendmsg = sco_sock_sendmsg, | |
20714bfe | 1199 | .recvmsg = sco_sock_recvmsg, |
a11e1d43 | 1200 | .poll = bt_sock_poll, |
3241ad82 | 1201 | .ioctl = bt_sock_ioctl, |
1da177e4 LT |
1202 | .mmap = sock_no_mmap, |
1203 | .socketpair = sock_no_socketpair, | |
fd0b3ff7 | 1204 | .shutdown = sco_sock_shutdown, |
1da177e4 LT |
1205 | .setsockopt = sco_sock_setsockopt, |
1206 | .getsockopt = sco_sock_getsockopt | |
1207 | }; | |
1208 | ||
ec1b4cf7 | 1209 | static const struct net_proto_family sco_sock_family_ops = { |
1da177e4 LT |
1210 | .family = PF_BLUETOOTH, |
1211 | .owner = THIS_MODULE, | |
1212 | .create = sco_sock_create, | |
1213 | }; | |
1214 | ||
64274518 | 1215 | int __init sco_init(void) |
1da177e4 LT |
1216 | { |
1217 | int err; | |
1218 | ||
15762fa7 MH |
1219 | BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr)); |
1220 | ||
1da177e4 LT |
1221 | err = proto_register(&sco_proto, 0); |
1222 | if (err < 0) | |
1223 | return err; | |
1224 | ||
1225 | err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); | |
1226 | if (err < 0) { | |
1227 | BT_ERR("SCO socket registration failed"); | |
1228 | goto error; | |
1229 | } | |
1230 | ||
b0316615 | 1231 | err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212 MY |
1232 | if (err < 0) { |
1233 | BT_ERR("Failed to create SCO proc file"); | |
1234 | bt_sock_unregister(BTPROTO_SCO); | |
1235 | goto error; | |
1236 | } | |
1237 | ||
1da177e4 LT |
1238 | BT_INFO("SCO socket layer initialized"); |
1239 | ||
539c496d JH |
1240 | hci_register_cb(&sco_cb); |
1241 | ||
1120e4bf MH |
1242 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1243 | return 0; | |
1244 | ||
1245 | sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, | |
1246 | NULL, &sco_debugfs_fops); | |
1247 | ||
1da177e4 LT |
1248 | return 0; |
1249 | ||
1250 | error: | |
1251 | proto_unregister(&sco_proto); | |
1252 | return err; | |
1253 | } | |
1254 | ||
0402d9f2 | 1255 | void sco_exit(void) |
1da177e4 | 1256 | { |
de9b9212 MY |
1257 | bt_procfs_cleanup(&init_net, "sco"); |
1258 | ||
aef7d97c | 1259 | debugfs_remove(sco_debugfs); |
1da177e4 | 1260 | |
539c496d JH |
1261 | hci_unregister_cb(&sco_cb); |
1262 | ||
5e9d7f86 | 1263 | bt_sock_unregister(BTPROTO_SCO); |
1da177e4 | 1264 | |
1da177e4 LT |
1265 | proto_unregister(&sco_proto); |
1266 | } | |
1267 | ||
7cb127d5 MH |
1268 | module_param(disable_esco, bool, 0644); |
1269 | MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |