Commit | Line | Data |
---|---|---|
8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
4 | ||
5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License version 2 as | |
9 | published by the Free Software Foundation; | |
10 | ||
11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | ||
8e87d142 YH |
20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
22 | SOFTWARE IS DISCLAIMED. |
23 | */ | |
24 | ||
25 | /* Bluetooth SCO sockets. */ | |
26 | ||
1da177e4 | 27 | #include <linux/module.h> |
aef7d97c MH |
28 | #include <linux/debugfs.h> |
29 | #include <linux/seq_file.h> | |
1da177e4 LT |
30 | |
31 | #include <net/bluetooth/bluetooth.h> | |
32 | #include <net/bluetooth/hci_core.h> | |
33 | #include <net/bluetooth/sco.h> | |
34 | ||
eb939922 | 35 | static bool disable_esco; |
1da177e4 | 36 | |
90ddc4f0 | 37 | static const struct proto_ops sco_sock_ops; |
1da177e4 LT |
38 | |
39 | static struct bt_sock_list sco_sk_list = { | |
d5fb2962 | 40 | .lock = __RW_LOCK_UNLOCKED(sco_sk_list.lock) |
1da177e4 LT |
41 | }; |
42 | ||
fc8f525a MH |
43 | /* ---- SCO connections ---- */ |
44 | struct sco_conn { | |
45 | struct hci_conn *hcon; | |
46 | ||
47 | spinlock_t lock; | |
48 | struct sock *sk; | |
49 | ||
50 | unsigned int mtu; | |
51 | }; | |
52 | ||
53 | #define sco_conn_lock(c) spin_lock(&c->lock); | |
54 | #define sco_conn_unlock(c) spin_unlock(&c->lock); | |
55 | ||
1da177e4 LT |
56 | static void sco_sock_close(struct sock *sk); |
57 | static void sco_sock_kill(struct sock *sk); | |
58 | ||
2a0dccb3 MH |
59 | /* ----- SCO socket info ----- */ |
60 | #define sco_pi(sk) ((struct sco_pinfo *) sk) | |
61 | ||
62 | struct sco_pinfo { | |
63 | struct bt_sock bt; | |
64 | bdaddr_t src; | |
65 | bdaddr_t dst; | |
66 | __u32 flags; | |
67 | __u16 setting; | |
68 | struct sco_conn *conn; | |
69 | }; | |
70 | ||
1da177e4 | 71 | /* ---- SCO timers ---- */ |
068d69e5 MH |
72 | #define SCO_CONN_TIMEOUT (HZ * 40) |
73 | #define SCO_DISCONN_TIMEOUT (HZ * 2) | |
74 | ||
1da177e4 LT |
75 | static void sco_sock_timeout(unsigned long arg) |
76 | { | |
c4297e8f | 77 | struct sock *sk = (struct sock *)arg; |
1da177e4 LT |
78 | |
79 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
80 | ||
81 | bh_lock_sock(sk); | |
82 | sk->sk_err = ETIMEDOUT; | |
83 | sk->sk_state_change(sk); | |
84 | bh_unlock_sock(sk); | |
85 | ||
86 | sco_sock_kill(sk); | |
87 | sock_put(sk); | |
88 | } | |
89 | ||
90 | static void sco_sock_set_timer(struct sock *sk, long timeout) | |
91 | { | |
92 | BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout); | |
93 | sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout); | |
94 | } | |
95 | ||
96 | static void sco_sock_clear_timer(struct sock *sk) | |
97 | { | |
98 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
99 | sk_stop_timer(sk, &sk->sk_timer); | |
100 | } | |
101 | ||
1da177e4 | 102 | /* ---- SCO connections ---- */ |
519e42b3 | 103 | static struct sco_conn *sco_conn_add(struct hci_conn *hcon) |
1da177e4 LT |
104 | { |
105 | struct hci_dev *hdev = hcon->hdev; | |
25ea6db0 | 106 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 | 107 | |
519e42b3 | 108 | if (conn) |
1da177e4 LT |
109 | return conn; |
110 | ||
c10cc5a9 | 111 | conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL); |
25ea6db0 | 112 | if (!conn) |
1da177e4 | 113 | return NULL; |
1da177e4 LT |
114 | |
115 | spin_lock_init(&conn->lock); | |
116 | ||
117 | hcon->sco_data = conn; | |
118 | conn->hcon = hcon; | |
119 | ||
1da177e4 LT |
120 | if (hdev->sco_mtu > 0) |
121 | conn->mtu = hdev->sco_mtu; | |
122 | else | |
123 | conn->mtu = 60; | |
124 | ||
125 | BT_DBG("hcon %p conn %p", hcon, conn); | |
25ea6db0 | 126 | |
1da177e4 LT |
127 | return conn; |
128 | } | |
129 | ||
e03ab519 MH |
130 | /* Delete channel. |
131 | * Must be called on the locked socket. */ | |
132 | static void sco_chan_del(struct sock *sk, int err) | |
133 | { | |
134 | struct sco_conn *conn; | |
135 | ||
136 | conn = sco_pi(sk)->conn; | |
137 | ||
138 | BT_DBG("sk %p, conn %p, err %d", sk, conn, err); | |
139 | ||
140 | if (conn) { | |
141 | sco_conn_lock(conn); | |
142 | conn->sk = NULL; | |
143 | sco_pi(sk)->conn = NULL; | |
144 | sco_conn_unlock(conn); | |
145 | ||
146 | if (conn->hcon) | |
147 | hci_conn_drop(conn->hcon); | |
148 | } | |
149 | ||
150 | sk->sk_state = BT_CLOSED; | |
151 | sk->sk_err = err; | |
152 | sk->sk_state_change(sk); | |
153 | ||
154 | sock_set_flag(sk, SOCK_ZAPPED); | |
155 | } | |
156 | ||
df945360 | 157 | static void sco_conn_del(struct hci_conn *hcon, int err) |
1da177e4 | 158 | { |
735cbc47 | 159 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 LT |
160 | struct sock *sk; |
161 | ||
735cbc47 | 162 | if (!conn) |
df945360 | 163 | return; |
1da177e4 LT |
164 | |
165 | BT_DBG("hcon %p conn %p, err %d", hcon, conn, err); | |
166 | ||
167 | /* Kill socket */ | |
eb5a4de8 MH |
168 | sco_conn_lock(conn); |
169 | sk = conn->sk; | |
170 | sco_conn_unlock(conn); | |
171 | ||
735cbc47 | 172 | if (sk) { |
75e34f5c | 173 | sock_hold(sk); |
1da177e4 LT |
174 | bh_lock_sock(sk); |
175 | sco_sock_clear_timer(sk); | |
176 | sco_chan_del(sk, err); | |
177 | bh_unlock_sock(sk); | |
178 | sco_sock_kill(sk); | |
75e34f5c | 179 | sock_put(sk); |
1da177e4 LT |
180 | } |
181 | ||
182 | hcon->sco_data = NULL; | |
183 | kfree(conn); | |
1da177e4 LT |
184 | } |
185 | ||
c4297e8f MH |
186 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, |
187 | struct sock *parent) | |
015b01cb MH |
188 | { |
189 | BT_DBG("conn %p", conn); | |
190 | ||
191 | sco_pi(sk)->conn = conn; | |
192 | conn->sk = sk; | |
193 | ||
194 | if (parent) | |
195 | bt_accept_enqueue(parent, sk); | |
196 | } | |
197 | ||
6039aa73 GP |
198 | static int sco_chan_add(struct sco_conn *conn, struct sock *sk, |
199 | struct sock *parent) | |
1da177e4 LT |
200 | { |
201 | int err = 0; | |
202 | ||
203 | sco_conn_lock(conn); | |
b9dbdbc1 | 204 | if (conn->sk) |
1da177e4 | 205 | err = -EBUSY; |
b9dbdbc1 | 206 | else |
1da177e4 | 207 | __sco_chan_add(conn, sk, parent); |
b9dbdbc1 | 208 | |
1da177e4 LT |
209 | sco_conn_unlock(conn); |
210 | return err; | |
211 | } | |
212 | ||
213 | static int sco_connect(struct sock *sk) | |
214 | { | |
1da177e4 LT |
215 | struct sco_conn *conn; |
216 | struct hci_conn *hcon; | |
217 | struct hci_dev *hdev; | |
b6a0dc82 | 218 | int err, type; |
1da177e4 | 219 | |
eea96364 | 220 | BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst); |
1da177e4 | 221 | |
eea96364 | 222 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src); |
735cbc47 | 223 | if (!hdev) |
1da177e4 LT |
224 | return -EHOSTUNREACH; |
225 | ||
09fd0de5 | 226 | hci_dev_lock(hdev); |
1da177e4 | 227 | |
7cb127d5 MH |
228 | if (lmp_esco_capable(hdev) && !disable_esco) |
229 | type = ESCO_LINK; | |
230 | else | |
231 | type = SCO_LINK; | |
b6a0dc82 | 232 | |
79dc0087 FD |
233 | if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT && |
234 | (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) { | |
235 | err = -EOPNOTSUPP; | |
236 | goto done; | |
237 | } | |
238 | ||
eea96364 | 239 | hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst, |
041987cf | 240 | sco_pi(sk)->setting); |
30e76272 VT |
241 | if (IS_ERR(hcon)) { |
242 | err = PTR_ERR(hcon); | |
1da177e4 | 243 | goto done; |
30e76272 | 244 | } |
1da177e4 | 245 | |
519e42b3 | 246 | conn = sco_conn_add(hcon); |
1da177e4 | 247 | if (!conn) { |
76a68ba0 | 248 | hci_conn_drop(hcon); |
30e76272 | 249 | err = -ENOMEM; |
1da177e4 LT |
250 | goto done; |
251 | } | |
252 | ||
253 | /* Update source addr of the socket */ | |
eea96364 | 254 | bacpy(&sco_pi(sk)->src, &hcon->src); |
1da177e4 LT |
255 | |
256 | err = sco_chan_add(conn, sk, NULL); | |
257 | if (err) | |
258 | goto done; | |
259 | ||
260 | if (hcon->state == BT_CONNECTED) { | |
261 | sco_sock_clear_timer(sk); | |
262 | sk->sk_state = BT_CONNECTED; | |
263 | } else { | |
264 | sk->sk_state = BT_CONNECT; | |
265 | sco_sock_set_timer(sk, sk->sk_sndtimeo); | |
266 | } | |
b6a0dc82 | 267 | |
1da177e4 | 268 | done: |
09fd0de5 | 269 | hci_dev_unlock(hdev); |
1da177e4 LT |
270 | hci_dev_put(hdev); |
271 | return err; | |
272 | } | |
273 | ||
6039aa73 | 274 | static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len) |
1da177e4 LT |
275 | { |
276 | struct sco_conn *conn = sco_pi(sk)->conn; | |
277 | struct sk_buff *skb; | |
088ce088 | 278 | int err; |
1da177e4 LT |
279 | |
280 | /* Check outgoing MTU */ | |
281 | if (len > conn->mtu) | |
282 | return -EINVAL; | |
283 | ||
284 | BT_DBG("sk %p len %d", sk, len); | |
285 | ||
088ce088 | 286 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
b9dbdbc1 | 287 | if (!skb) |
1da177e4 LT |
288 | return err; |
289 | ||
6ce8e9ce | 290 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
b9dbdbc1 GP |
291 | kfree_skb(skb); |
292 | return -EFAULT; | |
1da177e4 LT |
293 | } |
294 | ||
0d861d8b | 295 | hci_send_sco(conn->hcon, skb); |
1da177e4 | 296 | |
088ce088 | 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 | ||
311 | BT_DBG("sk %p len %d", sk, skb->len); | |
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 | { | |
395 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
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 | } |
fd0b3ff7 | 438 | } |
1da177e4 | 439 | |
fd0b3ff7 MH |
440 | /* Must be called on unlocked socket. */ |
441 | static void sco_sock_close(struct sock *sk) | |
442 | { | |
443 | sco_sock_clear_timer(sk); | |
444 | lock_sock(sk); | |
445 | __sco_sock_close(sk); | |
1da177e4 | 446 | release_sock(sk); |
1da177e4 LT |
447 | sco_sock_kill(sk); |
448 | } | |
449 | ||
450 | static void sco_sock_init(struct sock *sk, struct sock *parent) | |
451 | { | |
452 | BT_DBG("sk %p", sk); | |
453 | ||
6230c9b4 | 454 | if (parent) { |
1da177e4 | 455 | sk->sk_type = parent->sk_type; |
20714bfe | 456 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
6230c9b4 PM |
457 | security_sk_clone(parent, sk); |
458 | } | |
1da177e4 LT |
459 | } |
460 | ||
461 | static struct proto sco_proto = { | |
462 | .name = "SCO", | |
463 | .owner = THIS_MODULE, | |
464 | .obj_size = sizeof(struct sco_pinfo) | |
465 | }; | |
466 | ||
c4297e8f MH |
467 | static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, |
468 | int proto, gfp_t prio, int kern) | |
1da177e4 LT |
469 | { |
470 | struct sock *sk; | |
471 | ||
11aa9c28 | 472 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern); |
1da177e4 LT |
473 | if (!sk) |
474 | return NULL; | |
475 | ||
476 | sock_init_data(sock, sk); | |
477 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
478 | ||
479 | sk->sk_destruct = sco_sock_destruct; | |
480 | sk->sk_sndtimeo = SCO_CONN_TIMEOUT; | |
481 | ||
482 | sock_reset_flag(sk, SOCK_ZAPPED); | |
483 | ||
484 | sk->sk_protocol = proto; | |
485 | sk->sk_state = BT_OPEN; | |
486 | ||
ad10b1a4 FD |
487 | sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
488 | ||
b24b8a24 | 489 | setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk); |
1da177e4 LT |
490 | |
491 | bt_sock_link(&sco_sk_list, sk); | |
492 | return sk; | |
493 | } | |
494 | ||
3f378b68 EP |
495 | static int sco_sock_create(struct net *net, struct socket *sock, int protocol, |
496 | int kern) | |
1da177e4 LT |
497 | { |
498 | struct sock *sk; | |
499 | ||
500 | BT_DBG("sock %p", sock); | |
501 | ||
502 | sock->state = SS_UNCONNECTED; | |
503 | ||
504 | if (sock->type != SOCK_SEQPACKET) | |
505 | return -ESOCKTNOSUPPORT; | |
506 | ||
507 | sock->ops = &sco_sock_ops; | |
508 | ||
11aa9c28 | 509 | sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); |
74da626a | 510 | if (!sk) |
1da177e4 LT |
511 | return -ENOMEM; |
512 | ||
513 | sco_sock_init(sk, NULL); | |
514 | return 0; | |
515 | } | |
516 | ||
c4297e8f MH |
517 | static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, |
518 | int addr_len) | |
1da177e4 LT |
519 | { |
520 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
521 | struct sock *sk = sock->sk; | |
1da177e4 LT |
522 | int err = 0; |
523 | ||
6ed93dc6 | 524 | BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
1da177e4 LT |
525 | |
526 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
527 | return -EINVAL; | |
528 | ||
529 | lock_sock(sk); | |
530 | ||
531 | if (sk->sk_state != BT_OPEN) { | |
532 | err = -EBADFD; | |
533 | goto done; | |
534 | } | |
535 | ||
8ed21f7e MH |
536 | if (sk->sk_type != SOCK_SEQPACKET) { |
537 | err = -EINVAL; | |
538 | goto done; | |
1da177e4 LT |
539 | } |
540 | ||
eea96364 | 541 | bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
8ed21f7e MH |
542 | |
543 | sk->sk_state = BT_BOUND; | |
1da177e4 LT |
544 | |
545 | done: | |
546 | release_sock(sk); | |
547 | return err; | |
548 | } | |
549 | ||
550 | static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
551 | { | |
552 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
553 | struct sock *sk = sock->sk; | |
92f185c8 | 554 | int err; |
1da177e4 LT |
555 | |
556 | BT_DBG("sk %p", sk); | |
557 | ||
6503d961 CG |
558 | if (alen < sizeof(struct sockaddr_sco) || |
559 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
560 | return -EINVAL; |
561 | ||
562 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) | |
563 | return -EBADFD; | |
564 | ||
565 | if (sk->sk_type != SOCK_SEQPACKET) | |
566 | return -EINVAL; | |
567 | ||
568 | lock_sock(sk); | |
569 | ||
570 | /* Set destination address and psm */ | |
eea96364 | 571 | bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
1da177e4 | 572 | |
735cbc47 AE |
573 | err = sco_connect(sk); |
574 | if (err) | |
1da177e4 LT |
575 | goto done; |
576 | ||
8e87d142 | 577 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99 | 578 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4 LT |
579 | |
580 | done: | |
581 | release_sock(sk); | |
582 | return err; | |
583 | } | |
584 | ||
585 | static int sco_sock_listen(struct socket *sock, int backlog) | |
586 | { | |
587 | struct sock *sk = sock->sk; | |
eea96364 | 588 | bdaddr_t *src = &sco_pi(sk)->src; |
1da177e4 LT |
589 | int err = 0; |
590 | ||
591 | BT_DBG("sk %p backlog %d", sk, backlog); | |
592 | ||
593 | lock_sock(sk); | |
594 | ||
7d5d775a | 595 | if (sk->sk_state != BT_BOUND) { |
1da177e4 LT |
596 | err = -EBADFD; |
597 | goto done; | |
598 | } | |
599 | ||
7d5d775a MH |
600 | if (sk->sk_type != SOCK_SEQPACKET) { |
601 | err = -EINVAL; | |
602 | goto done; | |
603 | } | |
604 | ||
fb334059 MH |
605 | write_lock(&sco_sk_list.lock); |
606 | ||
607 | if (__sco_get_sock_listen_by_addr(src)) { | |
608 | err = -EADDRINUSE; | |
609 | goto unlock; | |
610 | } | |
611 | ||
1da177e4 LT |
612 | sk->sk_max_ack_backlog = backlog; |
613 | sk->sk_ack_backlog = 0; | |
fb334059 | 614 | |
1da177e4 LT |
615 | sk->sk_state = BT_LISTEN; |
616 | ||
fb334059 MH |
617 | unlock: |
618 | write_unlock(&sco_sk_list.lock); | |
619 | ||
1da177e4 LT |
620 | done: |
621 | release_sock(sk); | |
622 | return err; | |
623 | } | |
624 | ||
c4297e8f MH |
625 | static int sco_sock_accept(struct socket *sock, struct socket *newsock, |
626 | int flags) | |
1da177e4 | 627 | { |
dfb2fae7 | 628 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4 LT |
629 | struct sock *sk = sock->sk, *ch; |
630 | long timeo; | |
631 | int err = 0; | |
632 | ||
633 | lock_sock(sk); | |
634 | ||
1da177e4 LT |
635 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
636 | ||
637 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
638 | ||
639 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 640 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3c | 641 | while (1) { |
552b0d3c PH |
642 | if (sk->sk_state != BT_LISTEN) { |
643 | err = -EBADFD; | |
1da177e4 LT |
644 | break; |
645 | } | |
646 | ||
552b0d3c PH |
647 | ch = bt_accept_dequeue(sk, newsock); |
648 | if (ch) | |
649 | break; | |
1da177e4 | 650 | |
552b0d3c PH |
651 | if (!timeo) { |
652 | err = -EAGAIN; | |
1da177e4 LT |
653 | break; |
654 | } | |
655 | ||
656 | if (signal_pending(current)) { | |
657 | err = sock_intr_errno(timeo); | |
658 | break; | |
659 | } | |
552b0d3c PH |
660 | |
661 | release_sock(sk); | |
dfb2fae7 PH |
662 | |
663 | timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); | |
552b0d3c | 664 | lock_sock(sk); |
1da177e4 | 665 | } |
aa395145 | 666 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
667 | |
668 | if (err) | |
669 | goto done; | |
670 | ||
671 | newsock->state = SS_CONNECTED; | |
672 | ||
673 | BT_DBG("new socket %p", ch); | |
674 | ||
675 | done: | |
676 | release_sock(sk); | |
677 | return err; | |
678 | } | |
679 | ||
c4297e8f MH |
680 | static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, |
681 | int *len, int peer) | |
1da177e4 LT |
682 | { |
683 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
684 | struct sock *sk = sock->sk; | |
685 | ||
686 | BT_DBG("sock %p, sk %p", sock, sk); | |
687 | ||
688 | addr->sa_family = AF_BLUETOOTH; | |
689 | *len = sizeof(struct sockaddr_sco); | |
690 | ||
691 | if (peer) | |
eea96364 | 692 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
1da177e4 | 693 | else |
eea96364 | 694 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
1da177e4 LT |
695 | |
696 | return 0; | |
697 | } | |
698 | ||
1b784140 YX |
699 | static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
700 | size_t len) | |
1da177e4 LT |
701 | { |
702 | struct sock *sk = sock->sk; | |
b9dbdbc1 | 703 | int err; |
1da177e4 LT |
704 | |
705 | BT_DBG("sock %p, sk %p", sock, sk); | |
706 | ||
c1cbe4b7 BL |
707 | err = sock_error(sk); |
708 | if (err) | |
709 | return err; | |
1da177e4 LT |
710 | |
711 | if (msg->msg_flags & MSG_OOB) | |
712 | return -EOPNOTSUPP; | |
713 | ||
714 | lock_sock(sk); | |
715 | ||
716 | if (sk->sk_state == BT_CONNECTED) | |
717 | err = sco_send_frame(sk, msg, len); | |
718 | else | |
719 | err = -ENOTCONN; | |
720 | ||
721 | release_sock(sk); | |
722 | return err; | |
723 | } | |
724 | ||
2f69a82a | 725 | static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
fa5513be FD |
726 | { |
727 | struct hci_dev *hdev = conn->hdev; | |
728 | ||
729 | BT_DBG("conn %p", conn); | |
730 | ||
731 | conn->state = BT_CONFIG; | |
732 | ||
733 | if (!lmp_esco_capable(hdev)) { | |
734 | struct hci_cp_accept_conn_req cp; | |
735 | ||
736 | bacpy(&cp.bdaddr, &conn->dst); | |
33f24048 | 737 | cp.role = 0x00; /* Ignored */ |
fa5513be FD |
738 | |
739 | hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); | |
740 | } else { | |
741 | struct hci_cp_accept_sync_conn_req cp; | |
742 | ||
743 | bacpy(&cp.bdaddr, &conn->dst); | |
744 | cp.pkt_type = cpu_to_le16(conn->pkt_type); | |
745 | ||
dcf4adbf JP |
746 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
747 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
2f69a82a FD |
748 | cp.content_format = cpu_to_le16(setting); |
749 | ||
750 | switch (setting & SCO_AIRMODE_MASK) { | |
751 | case SCO_AIRMODE_TRANSP: | |
752 | if (conn->pkt_type & ESCO_2EV3) | |
dcf4adbf | 753 | cp.max_latency = cpu_to_le16(0x0008); |
2f69a82a | 754 | else |
dcf4adbf | 755 | cp.max_latency = cpu_to_le16(0x000D); |
2f69a82a FD |
756 | cp.retrans_effort = 0x02; |
757 | break; | |
758 | case SCO_AIRMODE_CVSD: | |
dcf4adbf | 759 | cp.max_latency = cpu_to_le16(0xffff); |
2f69a82a FD |
760 | cp.retrans_effort = 0xff; |
761 | break; | |
762 | } | |
fa5513be FD |
763 | |
764 | hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, | |
765 | sizeof(cp), &cp); | |
766 | } | |
767 | } | |
768 | ||
1b784140 YX |
769 | static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
770 | size_t len, int flags) | |
20714bfe FD |
771 | { |
772 | struct sock *sk = sock->sk; | |
773 | struct sco_pinfo *pi = sco_pi(sk); | |
774 | ||
775 | lock_sock(sk); | |
776 | ||
777 | if (sk->sk_state == BT_CONNECT2 && | |
778 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { | |
2f69a82a | 779 | sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
20714bfe FD |
780 | sk->sk_state = BT_CONFIG; |
781 | ||
782 | release_sock(sk); | |
783 | return 0; | |
784 | } | |
785 | ||
786 | release_sock(sk); | |
787 | ||
1b784140 | 788 | return bt_sock_recvmsg(sock, msg, len, flags); |
20714bfe FD |
789 | } |
790 | ||
c4297e8f MH |
791 | static int sco_sock_setsockopt(struct socket *sock, int level, int optname, |
792 | char __user *optval, unsigned int optlen) | |
1da177e4 LT |
793 | { |
794 | struct sock *sk = sock->sk; | |
ad10b1a4 FD |
795 | int len, err = 0; |
796 | struct bt_voice voice; | |
b96e9c67 | 797 | u32 opt; |
1da177e4 LT |
798 | |
799 | BT_DBG("sk %p", sk); | |
800 | ||
801 | lock_sock(sk); | |
802 | ||
803 | switch (optname) { | |
b96e9c67 FD |
804 | |
805 | case BT_DEFER_SETUP: | |
806 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
807 | err = -EINVAL; | |
808 | break; | |
809 | } | |
810 | ||
811 | if (get_user(opt, (u32 __user *) optval)) { | |
812 | err = -EFAULT; | |
813 | break; | |
814 | } | |
815 | ||
816 | if (opt) | |
817 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
818 | else | |
819 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
820 | break; | |
821 | ||
ad10b1a4 FD |
822 | case BT_VOICE: |
823 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
824 | sk->sk_state != BT_CONNECT2) { | |
825 | err = -EINVAL; | |
826 | break; | |
827 | } | |
828 | ||
829 | voice.setting = sco_pi(sk)->setting; | |
830 | ||
831 | len = min_t(unsigned int, sizeof(voice), optlen); | |
c4297e8f | 832 | if (copy_from_user((char *)&voice, optval, len)) { |
ad10b1a4 FD |
833 | err = -EFAULT; |
834 | break; | |
835 | } | |
836 | ||
837 | /* Explicitly check for these values */ | |
838 | if (voice.setting != BT_VOICE_TRANSPARENT && | |
839 | voice.setting != BT_VOICE_CVSD_16BIT) { | |
840 | err = -EINVAL; | |
841 | break; | |
842 | } | |
843 | ||
844 | sco_pi(sk)->setting = voice.setting; | |
845 | break; | |
846 | ||
1da177e4 LT |
847 | default: |
848 | err = -ENOPROTOOPT; | |
849 | break; | |
850 | } | |
851 | ||
852 | release_sock(sk); | |
853 | return err; | |
854 | } | |
855 | ||
c4297e8f MH |
856 | static int sco_sock_getsockopt_old(struct socket *sock, int optname, |
857 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
858 | { |
859 | struct sock *sk = sock->sk; | |
860 | struct sco_options opts; | |
861 | struct sco_conninfo cinfo; | |
8e87d142 | 862 | int len, err = 0; |
1da177e4 LT |
863 | |
864 | BT_DBG("sk %p", sk); | |
865 | ||
866 | if (get_user(len, optlen)) | |
867 | return -EFAULT; | |
868 | ||
869 | lock_sock(sk); | |
870 | ||
871 | switch (optname) { | |
872 | case SCO_OPTIONS: | |
9d225d22 JH |
873 | if (sk->sk_state != BT_CONNECTED && |
874 | !(sk->sk_state == BT_CONNECT2 && | |
875 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
876 | err = -ENOTCONN; |
877 | break; | |
878 | } | |
879 | ||
880 | opts.mtu = sco_pi(sk)->conn->mtu; | |
881 | ||
882 | BT_DBG("mtu %d", opts.mtu); | |
883 | ||
884 | len = min_t(unsigned int, len, sizeof(opts)); | |
885 | if (copy_to_user(optval, (char *)&opts, len)) | |
886 | err = -EFAULT; | |
887 | ||
888 | break; | |
889 | ||
890 | case SCO_CONNINFO: | |
9d225d22 JH |
891 | if (sk->sk_state != BT_CONNECTED && |
892 | !(sk->sk_state == BT_CONNECT2 && | |
893 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
894 | err = -ENOTCONN; |
895 | break; | |
896 | } | |
897 | ||
c4c896e1 | 898 | memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4 LT |
899 | cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; |
900 | memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); | |
901 | ||
902 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
903 | if (copy_to_user(optval, (char *)&cinfo, len)) | |
904 | err = -EFAULT; | |
905 | ||
906 | break; | |
907 | ||
908 | default: | |
909 | err = -ENOPROTOOPT; | |
910 | break; | |
911 | } | |
912 | ||
913 | release_sock(sk); | |
914 | return err; | |
915 | } | |
916 | ||
c4297e8f MH |
917 | static int sco_sock_getsockopt(struct socket *sock, int level, int optname, |
918 | char __user *optval, int __user *optlen) | |
d58daf42 MH |
919 | { |
920 | struct sock *sk = sock->sk; | |
921 | int len, err = 0; | |
ad10b1a4 | 922 | struct bt_voice voice; |
d58daf42 MH |
923 | |
924 | BT_DBG("sk %p", sk); | |
925 | ||
926 | if (level == SOL_SCO) | |
927 | return sco_sock_getsockopt_old(sock, optname, optval, optlen); | |
928 | ||
929 | if (get_user(len, optlen)) | |
930 | return -EFAULT; | |
931 | ||
932 | lock_sock(sk); | |
933 | ||
934 | switch (optname) { | |
b96e9c67 FD |
935 | |
936 | case BT_DEFER_SETUP: | |
937 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
938 | err = -EINVAL; | |
939 | break; | |
940 | } | |
941 | ||
942 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), | |
c4297e8f | 943 | (u32 __user *)optval)) |
b96e9c67 FD |
944 | err = -EFAULT; |
945 | ||
946 | break; | |
947 | ||
ad10b1a4 FD |
948 | case BT_VOICE: |
949 | voice.setting = sco_pi(sk)->setting; | |
950 | ||
951 | len = min_t(unsigned int, len, sizeof(voice)); | |
952 | if (copy_to_user(optval, (char *)&voice, len)) | |
953 | err = -EFAULT; | |
954 | ||
955 | break; | |
956 | ||
d58daf42 MH |
957 | default: |
958 | err = -ENOPROTOOPT; | |
959 | break; | |
960 | } | |
961 | ||
962 | release_sock(sk); | |
963 | return err; | |
964 | } | |
965 | ||
fd0b3ff7 MH |
966 | static int sco_sock_shutdown(struct socket *sock, int how) |
967 | { | |
968 | struct sock *sk = sock->sk; | |
969 | int err = 0; | |
970 | ||
971 | BT_DBG("sock %p, sk %p", sock, sk); | |
972 | ||
973 | if (!sk) | |
974 | return 0; | |
975 | ||
1da5537e | 976 | sock_hold(sk); |
fd0b3ff7 | 977 | lock_sock(sk); |
1da5537e | 978 | |
fd0b3ff7 MH |
979 | if (!sk->sk_shutdown) { |
980 | sk->sk_shutdown = SHUTDOWN_MASK; | |
981 | sco_sock_clear_timer(sk); | |
982 | __sco_sock_close(sk); | |
983 | ||
093facf3 VD |
984 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
985 | !(current->flags & PF_EXITING)) | |
fd0b3ff7 | 986 | err = bt_sock_wait_state(sk, BT_CLOSED, |
be7c2b99 | 987 | sk->sk_lingertime); |
fd0b3ff7 | 988 | } |
1da5537e | 989 | |
fd0b3ff7 | 990 | release_sock(sk); |
1da5537e KP |
991 | sock_put(sk); |
992 | ||
fd0b3ff7 MH |
993 | return err; |
994 | } | |
995 | ||
1da177e4 LT |
996 | static int sco_sock_release(struct socket *sock) |
997 | { | |
998 | struct sock *sk = sock->sk; | |
999 | int err = 0; | |
1000 | ||
1001 | BT_DBG("sock %p, sk %p", sock, sk); | |
1002 | ||
1003 | if (!sk) | |
1004 | return 0; | |
1005 | ||
1006 | sco_sock_close(sk); | |
1007 | ||
093facf3 VD |
1008 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
1009 | !(current->flags & PF_EXITING)) { | |
1da177e4 LT |
1010 | lock_sock(sk); |
1011 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
1012 | release_sock(sk); | |
1013 | } | |
1014 | ||
1015 | sock_orphan(sk); | |
1016 | sco_sock_kill(sk); | |
1017 | return err; | |
1018 | } | |
1019 | ||
1da177e4 LT |
1020 | static void sco_conn_ready(struct sco_conn *conn) |
1021 | { | |
735cbc47 AE |
1022 | struct sock *parent; |
1023 | struct sock *sk = conn->sk; | |
1da177e4 LT |
1024 | |
1025 | BT_DBG("conn %p", conn); | |
1026 | ||
735cbc47 | 1027 | if (sk) { |
1da177e4 LT |
1028 | sco_sock_clear_timer(sk); |
1029 | bh_lock_sock(sk); | |
1030 | sk->sk_state = BT_CONNECTED; | |
1031 | sk->sk_state_change(sk); | |
1032 | bh_unlock_sock(sk); | |
1033 | } else { | |
40528088 AG |
1034 | sco_conn_lock(conn); |
1035 | ||
2c501cdd KP |
1036 | if (!conn->hcon) { |
1037 | sco_conn_unlock(conn); | |
1038 | return; | |
1039 | } | |
1040 | ||
041987cf | 1041 | parent = sco_get_sock_listen(&conn->hcon->src); |
40528088 AG |
1042 | if (!parent) { |
1043 | sco_conn_unlock(conn); | |
1044 | return; | |
1045 | } | |
1da177e4 LT |
1046 | |
1047 | bh_lock_sock(parent); | |
1048 | ||
b9dbdbc1 | 1049 | sk = sco_sock_alloc(sock_net(parent), NULL, |
11aa9c28 | 1050 | BTPROTO_SCO, GFP_ATOMIC, 0); |
1da177e4 LT |
1051 | if (!sk) { |
1052 | bh_unlock_sock(parent); | |
40528088 AG |
1053 | sco_conn_unlock(conn); |
1054 | return; | |
1da177e4 LT |
1055 | } |
1056 | ||
1057 | sco_sock_init(sk, parent); | |
1058 | ||
eea96364 MH |
1059 | bacpy(&sco_pi(sk)->src, &conn->hcon->src); |
1060 | bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); | |
1da177e4 LT |
1061 | |
1062 | hci_conn_hold(conn->hcon); | |
1063 | __sco_chan_add(conn, sk, parent); | |
1064 | ||
20714bfe FD |
1065 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
1066 | sk->sk_state = BT_CONNECT2; | |
1067 | else | |
1068 | sk->sk_state = BT_CONNECTED; | |
1da177e4 LT |
1069 | |
1070 | /* Wake up parent */ | |
676d2369 | 1071 | parent->sk_data_ready(parent); |
1da177e4 LT |
1072 | |
1073 | bh_unlock_sock(parent); | |
1da177e4 | 1074 | |
40528088 AG |
1075 | sco_conn_unlock(conn); |
1076 | } | |
1da177e4 LT |
1077 | } |
1078 | ||
1079 | /* ----- SCO interface with lower layer (HCI) ----- */ | |
20714bfe | 1080 | int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4 | 1081 | { |
fc5fef61 | 1082 | struct sock *sk; |
71aeeaa1 MH |
1083 | int lm = 0; |
1084 | ||
6ed93dc6 | 1085 | BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4 | 1086 | |
71aeeaa1 MH |
1087 | /* Find listening sockets */ |
1088 | read_lock(&sco_sk_list.lock); | |
b67bfe0d | 1089 | sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1 MH |
1090 | if (sk->sk_state != BT_LISTEN) |
1091 | continue; | |
1092 | ||
eea96364 MH |
1093 | if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || |
1094 | !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { | |
71aeeaa1 | 1095 | lm |= HCI_LM_ACCEPT; |
20714bfe FD |
1096 | |
1097 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) | |
1098 | *flags |= HCI_PROTO_DEFER; | |
71aeeaa1 MH |
1099 | break; |
1100 | } | |
1101 | } | |
1102 | read_unlock(&sco_sk_list.lock); | |
1103 | ||
1104 | return lm; | |
1da177e4 LT |
1105 | } |
1106 | ||
539c496d | 1107 | static void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4 | 1108 | { |
539c496d JH |
1109 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1110 | return; | |
1111 | ||
6ed93dc6 | 1112 | BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status); |
539c496d | 1113 | |
1da177e4 LT |
1114 | if (!status) { |
1115 | struct sco_conn *conn; | |
1116 | ||
519e42b3 | 1117 | conn = sco_conn_add(hcon); |
1da177e4 LT |
1118 | if (conn) |
1119 | sco_conn_ready(conn); | |
8e87d142 | 1120 | } else |
e175072f | 1121 | sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4 LT |
1122 | } |
1123 | ||
3a6d576b | 1124 | static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4 | 1125 | { |
3a6d576b JH |
1126 | if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
1127 | return; | |
1128 | ||
1da177e4 LT |
1129 | BT_DBG("hcon %p reason %d", hcon, reason); |
1130 | ||
e175072f | 1131 | sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4 LT |
1132 | } |
1133 | ||
9b4c3336 | 1134 | void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4 LT |
1135 | { |
1136 | struct sco_conn *conn = hcon->sco_data; | |
1137 | ||
1138 | if (!conn) | |
1139 | goto drop; | |
1140 | ||
1141 | BT_DBG("conn %p len %d", conn, skb->len); | |
1142 | ||
1143 | if (skb->len) { | |
1144 | sco_recv_frame(conn, skb); | |
9b4c3336 | 1145 | return; |
1da177e4 LT |
1146 | } |
1147 | ||
1148 | drop: | |
8e87d142 | 1149 | kfree_skb(skb); |
1da177e4 LT |
1150 | } |
1151 | ||
539c496d JH |
1152 | static struct hci_cb sco_cb = { |
1153 | .name = "SCO", | |
1154 | .connect_cfm = sco_connect_cfm, | |
3a6d576b | 1155 | .disconn_cfm = sco_disconn_cfm, |
539c496d JH |
1156 | }; |
1157 | ||
aef7d97c | 1158 | static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1159 | { |
1160 | struct sock *sk; | |
1da177e4 | 1161 | |
ee65d19e | 1162 | read_lock(&sco_sk_list.lock); |
1da177e4 | 1163 | |
b67bfe0d | 1164 | sk_for_each(sk, &sco_sk_list.head) { |
eea96364 MH |
1165 | seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src, |
1166 | &sco_pi(sk)->dst, sk->sk_state); | |
be9d1227 | 1167 | } |
1da177e4 | 1168 | |
ee65d19e | 1169 | read_unlock(&sco_sk_list.lock); |
1da177e4 | 1170 | |
aef7d97c | 1171 | return 0; |
1da177e4 LT |
1172 | } |
1173 | ||
aef7d97c MH |
1174 | static int sco_debugfs_open(struct inode *inode, struct file *file) |
1175 | { | |
1176 | return single_open(file, sco_debugfs_show, inode->i_private); | |
1177 | } | |
1178 | ||
1179 | static const struct file_operations sco_debugfs_fops = { | |
1180 | .open = sco_debugfs_open, | |
1181 | .read = seq_read, | |
1182 | .llseek = seq_lseek, | |
1183 | .release = single_release, | |
1184 | }; | |
1185 | ||
1186 | static struct dentry *sco_debugfs; | |
1da177e4 | 1187 | |
90ddc4f0 | 1188 | static const struct proto_ops sco_sock_ops = { |
1da177e4 LT |
1189 | .family = PF_BLUETOOTH, |
1190 | .owner = THIS_MODULE, | |
1191 | .release = sco_sock_release, | |
1192 | .bind = sco_sock_bind, | |
1193 | .connect = sco_sock_connect, | |
1194 | .listen = sco_sock_listen, | |
1195 | .accept = sco_sock_accept, | |
1196 | .getname = sco_sock_getname, | |
1197 | .sendmsg = sco_sock_sendmsg, | |
20714bfe | 1198 | .recvmsg = sco_sock_recvmsg, |
1da177e4 | 1199 | .poll = bt_sock_poll, |
3241ad82 | 1200 | .ioctl = bt_sock_ioctl, |
1da177e4 LT |
1201 | .mmap = sock_no_mmap, |
1202 | .socketpair = sock_no_socketpair, | |
fd0b3ff7 | 1203 | .shutdown = sco_sock_shutdown, |
1da177e4 LT |
1204 | .setsockopt = sco_sock_setsockopt, |
1205 | .getsockopt = sco_sock_getsockopt | |
1206 | }; | |
1207 | ||
ec1b4cf7 | 1208 | static const struct net_proto_family sco_sock_family_ops = { |
1da177e4 LT |
1209 | .family = PF_BLUETOOTH, |
1210 | .owner = THIS_MODULE, | |
1211 | .create = sco_sock_create, | |
1212 | }; | |
1213 | ||
64274518 | 1214 | int __init sco_init(void) |
1da177e4 LT |
1215 | { |
1216 | int err; | |
1217 | ||
15762fa7 MH |
1218 | BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr)); |
1219 | ||
1da177e4 LT |
1220 | err = proto_register(&sco_proto, 0); |
1221 | if (err < 0) | |
1222 | return err; | |
1223 | ||
1224 | err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); | |
1225 | if (err < 0) { | |
1226 | BT_ERR("SCO socket registration failed"); | |
1227 | goto error; | |
1228 | } | |
1229 | ||
b0316615 | 1230 | err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212 MY |
1231 | if (err < 0) { |
1232 | BT_ERR("Failed to create SCO proc file"); | |
1233 | bt_sock_unregister(BTPROTO_SCO); | |
1234 | goto error; | |
1235 | } | |
1236 | ||
1da177e4 LT |
1237 | BT_INFO("SCO socket layer initialized"); |
1238 | ||
539c496d JH |
1239 | hci_register_cb(&sco_cb); |
1240 | ||
1120e4bf MH |
1241 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1242 | return 0; | |
1243 | ||
1244 | sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, | |
1245 | NULL, &sco_debugfs_fops); | |
1246 | ||
1da177e4 LT |
1247 | return 0; |
1248 | ||
1249 | error: | |
1250 | proto_unregister(&sco_proto); | |
1251 | return err; | |
1252 | } | |
1253 | ||
0402d9f2 | 1254 | void sco_exit(void) |
1da177e4 | 1255 | { |
de9b9212 MY |
1256 | bt_procfs_cleanup(&init_net, "sco"); |
1257 | ||
aef7d97c | 1258 | debugfs_remove(sco_debugfs); |
1da177e4 | 1259 | |
539c496d JH |
1260 | hci_unregister_cb(&sco_cb); |
1261 | ||
5e9d7f86 | 1262 | bt_sock_unregister(BTPROTO_SCO); |
1da177e4 | 1263 | |
1da177e4 LT |
1264 | proto_unregister(&sco_proto); |
1265 | } | |
1266 | ||
7cb127d5 MH |
1267 | module_param(disable_esco, bool, 0644); |
1268 | MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |