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 | ||
43 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent); | |
44 | static void sco_chan_del(struct sock *sk, int err); | |
45 | ||
1da177e4 LT |
46 | static void sco_sock_close(struct sock *sk); |
47 | static void sco_sock_kill(struct sock *sk); | |
48 | ||
2a0dccb3 MH |
49 | /* ----- SCO socket info ----- */ |
50 | #define sco_pi(sk) ((struct sco_pinfo *) sk) | |
51 | ||
52 | struct sco_pinfo { | |
53 | struct bt_sock bt; | |
54 | bdaddr_t src; | |
55 | bdaddr_t dst; | |
56 | __u32 flags; | |
57 | __u16 setting; | |
58 | struct sco_conn *conn; | |
59 | }; | |
60 | ||
1da177e4 LT |
61 | /* ---- SCO timers ---- */ |
62 | static void sco_sock_timeout(unsigned long arg) | |
63 | { | |
64 | struct sock *sk = (struct sock *) arg; | |
65 | ||
66 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
67 | ||
68 | bh_lock_sock(sk); | |
69 | sk->sk_err = ETIMEDOUT; | |
70 | sk->sk_state_change(sk); | |
71 | bh_unlock_sock(sk); | |
72 | ||
73 | sco_sock_kill(sk); | |
74 | sock_put(sk); | |
75 | } | |
76 | ||
77 | static void sco_sock_set_timer(struct sock *sk, long timeout) | |
78 | { | |
79 | BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout); | |
80 | sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout); | |
81 | } | |
82 | ||
83 | static void sco_sock_clear_timer(struct sock *sk) | |
84 | { | |
85 | BT_DBG("sock %p state %d", sk, sk->sk_state); | |
86 | sk_stop_timer(sk, &sk->sk_timer); | |
87 | } | |
88 | ||
1da177e4 | 89 | /* ---- SCO connections ---- */ |
519e42b3 | 90 | static struct sco_conn *sco_conn_add(struct hci_conn *hcon) |
1da177e4 LT |
91 | { |
92 | struct hci_dev *hdev = hcon->hdev; | |
25ea6db0 | 93 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 | 94 | |
519e42b3 | 95 | if (conn) |
1da177e4 LT |
96 | return conn; |
97 | ||
c10cc5a9 | 98 | conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL); |
25ea6db0 | 99 | if (!conn) |
1da177e4 | 100 | return NULL; |
1da177e4 LT |
101 | |
102 | spin_lock_init(&conn->lock); | |
103 | ||
104 | hcon->sco_data = conn; | |
105 | conn->hcon = hcon; | |
106 | ||
1da177e4 LT |
107 | if (hdev->sco_mtu > 0) |
108 | conn->mtu = hdev->sco_mtu; | |
109 | else | |
110 | conn->mtu = 60; | |
111 | ||
112 | BT_DBG("hcon %p conn %p", hcon, conn); | |
25ea6db0 | 113 | |
1da177e4 LT |
114 | return conn; |
115 | } | |
116 | ||
6039aa73 | 117 | static struct sock *sco_chan_get(struct sco_conn *conn) |
1da177e4 LT |
118 | { |
119 | struct sock *sk = NULL; | |
120 | sco_conn_lock(conn); | |
121 | sk = conn->sk; | |
122 | sco_conn_unlock(conn); | |
123 | return sk; | |
124 | } | |
125 | ||
126 | static int sco_conn_del(struct hci_conn *hcon, int err) | |
127 | { | |
735cbc47 | 128 | struct sco_conn *conn = hcon->sco_data; |
1da177e4 LT |
129 | struct sock *sk; |
130 | ||
735cbc47 | 131 | if (!conn) |
1da177e4 LT |
132 | return 0; |
133 | ||
134 | BT_DBG("hcon %p conn %p, err %d", hcon, conn, err); | |
135 | ||
136 | /* Kill socket */ | |
735cbc47 AE |
137 | sk = sco_chan_get(conn); |
138 | if (sk) { | |
1da177e4 LT |
139 | bh_lock_sock(sk); |
140 | sco_sock_clear_timer(sk); | |
141 | sco_chan_del(sk, err); | |
142 | bh_unlock_sock(sk); | |
143 | sco_sock_kill(sk); | |
144 | } | |
145 | ||
146 | hcon->sco_data = NULL; | |
147 | kfree(conn); | |
148 | return 0; | |
149 | } | |
150 | ||
6039aa73 GP |
151 | static int sco_chan_add(struct sco_conn *conn, struct sock *sk, |
152 | struct sock *parent) | |
1da177e4 LT |
153 | { |
154 | int err = 0; | |
155 | ||
156 | sco_conn_lock(conn); | |
b9dbdbc1 | 157 | if (conn->sk) |
1da177e4 | 158 | err = -EBUSY; |
b9dbdbc1 | 159 | else |
1da177e4 | 160 | __sco_chan_add(conn, sk, parent); |
b9dbdbc1 | 161 | |
1da177e4 LT |
162 | sco_conn_unlock(conn); |
163 | return err; | |
164 | } | |
165 | ||
166 | static int sco_connect(struct sock *sk) | |
167 | { | |
1da177e4 LT |
168 | struct sco_conn *conn; |
169 | struct hci_conn *hcon; | |
170 | struct hci_dev *hdev; | |
b6a0dc82 | 171 | int err, type; |
1da177e4 | 172 | |
eea96364 | 173 | BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst); |
1da177e4 | 174 | |
eea96364 | 175 | hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src); |
735cbc47 | 176 | if (!hdev) |
1da177e4 LT |
177 | return -EHOSTUNREACH; |
178 | ||
09fd0de5 | 179 | hci_dev_lock(hdev); |
1da177e4 | 180 | |
7cb127d5 MH |
181 | if (lmp_esco_capable(hdev) && !disable_esco) |
182 | type = ESCO_LINK; | |
183 | else | |
184 | type = SCO_LINK; | |
b6a0dc82 | 185 | |
79dc0087 FD |
186 | if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT && |
187 | (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) { | |
188 | err = -EOPNOTSUPP; | |
189 | goto done; | |
190 | } | |
191 | ||
eea96364 | 192 | hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst, |
041987cf | 193 | sco_pi(sk)->setting); |
30e76272 VT |
194 | if (IS_ERR(hcon)) { |
195 | err = PTR_ERR(hcon); | |
1da177e4 | 196 | goto done; |
30e76272 | 197 | } |
1da177e4 | 198 | |
519e42b3 | 199 | conn = sco_conn_add(hcon); |
1da177e4 | 200 | if (!conn) { |
76a68ba0 | 201 | hci_conn_drop(hcon); |
30e76272 | 202 | err = -ENOMEM; |
1da177e4 LT |
203 | goto done; |
204 | } | |
205 | ||
206 | /* Update source addr of the socket */ | |
eea96364 | 207 | bacpy(&sco_pi(sk)->src, &hcon->src); |
1da177e4 LT |
208 | |
209 | err = sco_chan_add(conn, sk, NULL); | |
210 | if (err) | |
211 | goto done; | |
212 | ||
213 | if (hcon->state == BT_CONNECTED) { | |
214 | sco_sock_clear_timer(sk); | |
215 | sk->sk_state = BT_CONNECTED; | |
216 | } else { | |
217 | sk->sk_state = BT_CONNECT; | |
218 | sco_sock_set_timer(sk, sk->sk_sndtimeo); | |
219 | } | |
b6a0dc82 | 220 | |
1da177e4 | 221 | done: |
09fd0de5 | 222 | hci_dev_unlock(hdev); |
1da177e4 LT |
223 | hci_dev_put(hdev); |
224 | return err; | |
225 | } | |
226 | ||
6039aa73 | 227 | static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len) |
1da177e4 LT |
228 | { |
229 | struct sco_conn *conn = sco_pi(sk)->conn; | |
230 | struct sk_buff *skb; | |
088ce088 | 231 | int err; |
1da177e4 LT |
232 | |
233 | /* Check outgoing MTU */ | |
234 | if (len > conn->mtu) | |
235 | return -EINVAL; | |
236 | ||
237 | BT_DBG("sk %p len %d", sk, len); | |
238 | ||
088ce088 | 239 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
b9dbdbc1 | 240 | if (!skb) |
1da177e4 LT |
241 | return err; |
242 | ||
088ce088 | 243 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { |
b9dbdbc1 GP |
244 | kfree_skb(skb); |
245 | return -EFAULT; | |
1da177e4 LT |
246 | } |
247 | ||
0d861d8b | 248 | hci_send_sco(conn->hcon, skb); |
1da177e4 | 249 | |
088ce088 | 250 | return len; |
1da177e4 LT |
251 | } |
252 | ||
6039aa73 | 253 | static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
254 | { |
255 | struct sock *sk = sco_chan_get(conn); | |
256 | ||
257 | if (!sk) | |
258 | goto drop; | |
259 | ||
260 | BT_DBG("sk %p len %d", sk, skb->len); | |
261 | ||
262 | if (sk->sk_state != BT_CONNECTED) | |
263 | goto drop; | |
264 | ||
265 | if (!sock_queue_rcv_skb(sk, skb)) | |
266 | return; | |
267 | ||
268 | drop: | |
269 | kfree_skb(skb); | |
1da177e4 LT |
270 | } |
271 | ||
272 | /* -------- Socket interface ---------- */ | |
fb334059 | 273 | static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba) |
1da177e4 | 274 | { |
fb334059 MH |
275 | struct sock *sk; |
276 | ||
b67bfe0d | 277 | sk_for_each(sk, &sco_sk_list.head) { |
fb334059 MH |
278 | if (sk->sk_state != BT_LISTEN) |
279 | continue; | |
1da177e4 | 280 | |
eea96364 | 281 | if (!bacmp(&sco_pi(sk)->src, ba)) |
fb334059 MH |
282 | return sk; |
283 | } | |
284 | ||
285 | return NULL; | |
1da177e4 LT |
286 | } |
287 | ||
288 | /* Find socket listening on source bdaddr. | |
289 | * Returns closest match. | |
290 | */ | |
291 | static struct sock *sco_get_sock_listen(bdaddr_t *src) | |
292 | { | |
293 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 LT |
294 | |
295 | read_lock(&sco_sk_list.lock); | |
296 | ||
b67bfe0d | 297 | sk_for_each(sk, &sco_sk_list.head) { |
1da177e4 LT |
298 | if (sk->sk_state != BT_LISTEN) |
299 | continue; | |
300 | ||
301 | /* Exact match. */ | |
eea96364 | 302 | if (!bacmp(&sco_pi(sk)->src, src)) |
1da177e4 LT |
303 | break; |
304 | ||
305 | /* Closest match */ | |
eea96364 | 306 | if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY)) |
1da177e4 LT |
307 | sk1 = sk; |
308 | } | |
309 | ||
310 | read_unlock(&sco_sk_list.lock); | |
311 | ||
b67bfe0d | 312 | return sk ? sk : sk1; |
1da177e4 LT |
313 | } |
314 | ||
315 | static void sco_sock_destruct(struct sock *sk) | |
316 | { | |
317 | BT_DBG("sk %p", sk); | |
318 | ||
319 | skb_queue_purge(&sk->sk_receive_queue); | |
320 | skb_queue_purge(&sk->sk_write_queue); | |
321 | } | |
322 | ||
323 | static void sco_sock_cleanup_listen(struct sock *parent) | |
324 | { | |
325 | struct sock *sk; | |
326 | ||
327 | BT_DBG("parent %p", parent); | |
328 | ||
329 | /* Close not yet accepted channels */ | |
330 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
331 | sco_sock_close(sk); | |
332 | sco_sock_kill(sk); | |
333 | } | |
334 | ||
335 | parent->sk_state = BT_CLOSED; | |
336 | sock_set_flag(parent, SOCK_ZAPPED); | |
337 | } | |
338 | ||
339 | /* Kill socket (only if zapped and orphan) | |
340 | * Must be called on unlocked socket. | |
341 | */ | |
342 | static void sco_sock_kill(struct sock *sk) | |
343 | { | |
344 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
345 | return; | |
346 | ||
347 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
348 | ||
349 | /* Kill poor orphan */ | |
350 | bt_sock_unlink(&sco_sk_list, sk); | |
351 | sock_set_flag(sk, SOCK_DEAD); | |
352 | sock_put(sk); | |
353 | } | |
354 | ||
fd0b3ff7 | 355 | static void __sco_sock_close(struct sock *sk) |
1da177e4 | 356 | { |
fd0b3ff7 | 357 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
1da177e4 LT |
358 | |
359 | switch (sk->sk_state) { | |
360 | case BT_LISTEN: | |
361 | sco_sock_cleanup_listen(sk); | |
362 | break; | |
363 | ||
364 | case BT_CONNECTED: | |
365 | case BT_CONFIG: | |
b7e98b51 | 366 | if (sco_pi(sk)->conn->hcon) { |
4a77708b LAD |
367 | sk->sk_state = BT_DISCONN; |
368 | sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); | |
76a68ba0 | 369 | hci_conn_drop(sco_pi(sk)->conn->hcon); |
4a77708b LAD |
370 | sco_pi(sk)->conn->hcon = NULL; |
371 | } else | |
372 | sco_chan_del(sk, ECONNRESET); | |
373 | break; | |
374 | ||
eb20ff9c | 375 | case BT_CONNECT2: |
1da177e4 LT |
376 | case BT_CONNECT: |
377 | case BT_DISCONN: | |
378 | sco_chan_del(sk, ECONNRESET); | |
379 | break; | |
380 | ||
381 | default: | |
382 | sock_set_flag(sk, SOCK_ZAPPED); | |
383 | break; | |
3ff50b79 | 384 | } |
fd0b3ff7 | 385 | } |
1da177e4 | 386 | |
fd0b3ff7 MH |
387 | /* Must be called on unlocked socket. */ |
388 | static void sco_sock_close(struct sock *sk) | |
389 | { | |
390 | sco_sock_clear_timer(sk); | |
391 | lock_sock(sk); | |
392 | __sco_sock_close(sk); | |
1da177e4 | 393 | release_sock(sk); |
1da177e4 LT |
394 | sco_sock_kill(sk); |
395 | } | |
396 | ||
397 | static void sco_sock_init(struct sock *sk, struct sock *parent) | |
398 | { | |
399 | BT_DBG("sk %p", sk); | |
400 | ||
6230c9b4 | 401 | if (parent) { |
1da177e4 | 402 | sk->sk_type = parent->sk_type; |
20714bfe | 403 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
6230c9b4 PM |
404 | security_sk_clone(parent, sk); |
405 | } | |
1da177e4 LT |
406 | } |
407 | ||
408 | static struct proto sco_proto = { | |
409 | .name = "SCO", | |
410 | .owner = THIS_MODULE, | |
411 | .obj_size = sizeof(struct sco_pinfo) | |
412 | }; | |
413 | ||
1b8d7ae4 | 414 | static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
1da177e4 LT |
415 | { |
416 | struct sock *sk; | |
417 | ||
6257ff21 | 418 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto); |
1da177e4 LT |
419 | if (!sk) |
420 | return NULL; | |
421 | ||
422 | sock_init_data(sock, sk); | |
423 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
424 | ||
425 | sk->sk_destruct = sco_sock_destruct; | |
426 | sk->sk_sndtimeo = SCO_CONN_TIMEOUT; | |
427 | ||
428 | sock_reset_flag(sk, SOCK_ZAPPED); | |
429 | ||
430 | sk->sk_protocol = proto; | |
431 | sk->sk_state = BT_OPEN; | |
432 | ||
ad10b1a4 FD |
433 | sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
434 | ||
b24b8a24 | 435 | setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk); |
1da177e4 LT |
436 | |
437 | bt_sock_link(&sco_sk_list, sk); | |
438 | return sk; | |
439 | } | |
440 | ||
3f378b68 EP |
441 | static int sco_sock_create(struct net *net, struct socket *sock, int protocol, |
442 | int kern) | |
1da177e4 LT |
443 | { |
444 | struct sock *sk; | |
445 | ||
446 | BT_DBG("sock %p", sock); | |
447 | ||
448 | sock->state = SS_UNCONNECTED; | |
449 | ||
450 | if (sock->type != SOCK_SEQPACKET) | |
451 | return -ESOCKTNOSUPPORT; | |
452 | ||
453 | sock->ops = &sco_sock_ops; | |
454 | ||
1b8d7ae4 | 455 | sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC); |
74da626a | 456 | if (!sk) |
1da177e4 LT |
457 | return -ENOMEM; |
458 | ||
459 | sco_sock_init(sk, NULL); | |
460 | return 0; | |
461 | } | |
462 | ||
463 | static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
464 | { | |
465 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
466 | struct sock *sk = sock->sk; | |
1da177e4 LT |
467 | int err = 0; |
468 | ||
6ed93dc6 | 469 | BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
1da177e4 LT |
470 | |
471 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
472 | return -EINVAL; | |
473 | ||
474 | lock_sock(sk); | |
475 | ||
476 | if (sk->sk_state != BT_OPEN) { | |
477 | err = -EBADFD; | |
478 | goto done; | |
479 | } | |
480 | ||
8ed21f7e MH |
481 | if (sk->sk_type != SOCK_SEQPACKET) { |
482 | err = -EINVAL; | |
483 | goto done; | |
1da177e4 LT |
484 | } |
485 | ||
eea96364 | 486 | bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
8ed21f7e MH |
487 | |
488 | sk->sk_state = BT_BOUND; | |
1da177e4 LT |
489 | |
490 | done: | |
491 | release_sock(sk); | |
492 | return err; | |
493 | } | |
494 | ||
495 | static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
496 | { | |
497 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
498 | struct sock *sk = sock->sk; | |
92f185c8 | 499 | int err; |
1da177e4 LT |
500 | |
501 | BT_DBG("sk %p", sk); | |
502 | ||
6503d961 CG |
503 | if (alen < sizeof(struct sockaddr_sco) || |
504 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
505 | return -EINVAL; |
506 | ||
507 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) | |
508 | return -EBADFD; | |
509 | ||
510 | if (sk->sk_type != SOCK_SEQPACKET) | |
511 | return -EINVAL; | |
512 | ||
513 | lock_sock(sk); | |
514 | ||
515 | /* Set destination address and psm */ | |
eea96364 | 516 | bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
1da177e4 | 517 | |
735cbc47 AE |
518 | err = sco_connect(sk); |
519 | if (err) | |
1da177e4 LT |
520 | goto done; |
521 | ||
8e87d142 | 522 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99 | 523 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4 LT |
524 | |
525 | done: | |
526 | release_sock(sk); | |
527 | return err; | |
528 | } | |
529 | ||
530 | static int sco_sock_listen(struct socket *sock, int backlog) | |
531 | { | |
532 | struct sock *sk = sock->sk; | |
eea96364 | 533 | bdaddr_t *src = &sco_pi(sk)->src; |
1da177e4 LT |
534 | int err = 0; |
535 | ||
536 | BT_DBG("sk %p backlog %d", sk, backlog); | |
537 | ||
538 | lock_sock(sk); | |
539 | ||
7d5d775a | 540 | if (sk->sk_state != BT_BOUND) { |
1da177e4 LT |
541 | err = -EBADFD; |
542 | goto done; | |
543 | } | |
544 | ||
7d5d775a MH |
545 | if (sk->sk_type != SOCK_SEQPACKET) { |
546 | err = -EINVAL; | |
547 | goto done; | |
548 | } | |
549 | ||
fb334059 MH |
550 | write_lock(&sco_sk_list.lock); |
551 | ||
552 | if (__sco_get_sock_listen_by_addr(src)) { | |
553 | err = -EADDRINUSE; | |
554 | goto unlock; | |
555 | } | |
556 | ||
1da177e4 LT |
557 | sk->sk_max_ack_backlog = backlog; |
558 | sk->sk_ack_backlog = 0; | |
fb334059 | 559 | |
1da177e4 LT |
560 | sk->sk_state = BT_LISTEN; |
561 | ||
fb334059 MH |
562 | unlock: |
563 | write_unlock(&sco_sk_list.lock); | |
564 | ||
1da177e4 LT |
565 | done: |
566 | release_sock(sk); | |
567 | return err; | |
568 | } | |
569 | ||
570 | static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flags) | |
571 | { | |
572 | DECLARE_WAITQUEUE(wait, current); | |
573 | struct sock *sk = sock->sk, *ch; | |
574 | long timeo; | |
575 | int err = 0; | |
576 | ||
577 | lock_sock(sk); | |
578 | ||
1da177e4 LT |
579 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
580 | ||
581 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
582 | ||
583 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 584 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3c | 585 | while (1) { |
1da177e4 | 586 | set_current_state(TASK_INTERRUPTIBLE); |
552b0d3c PH |
587 | |
588 | if (sk->sk_state != BT_LISTEN) { | |
589 | err = -EBADFD; | |
1da177e4 LT |
590 | break; |
591 | } | |
592 | ||
552b0d3c PH |
593 | ch = bt_accept_dequeue(sk, newsock); |
594 | if (ch) | |
595 | break; | |
1da177e4 | 596 | |
552b0d3c PH |
597 | if (!timeo) { |
598 | err = -EAGAIN; | |
1da177e4 LT |
599 | break; |
600 | } | |
601 | ||
602 | if (signal_pending(current)) { | |
603 | err = sock_intr_errno(timeo); | |
604 | break; | |
605 | } | |
552b0d3c PH |
606 | |
607 | release_sock(sk); | |
608 | timeo = schedule_timeout(timeo); | |
609 | lock_sock(sk); | |
1da177e4 | 610 | } |
552b0d3c | 611 | __set_current_state(TASK_RUNNING); |
aa395145 | 612 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
613 | |
614 | if (err) | |
615 | goto done; | |
616 | ||
617 | newsock->state = SS_CONNECTED; | |
618 | ||
619 | BT_DBG("new socket %p", ch); | |
620 | ||
621 | done: | |
622 | release_sock(sk); | |
623 | return err; | |
624 | } | |
625 | ||
626 | static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) | |
627 | { | |
628 | struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; | |
629 | struct sock *sk = sock->sk; | |
630 | ||
631 | BT_DBG("sock %p, sk %p", sock, sk); | |
632 | ||
633 | addr->sa_family = AF_BLUETOOTH; | |
634 | *len = sizeof(struct sockaddr_sco); | |
635 | ||
636 | if (peer) | |
eea96364 | 637 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
1da177e4 | 638 | else |
eea96364 | 639 | bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
1da177e4 LT |
640 | |
641 | return 0; | |
642 | } | |
643 | ||
8e87d142 | 644 | static int sco_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
1da177e4 LT |
645 | struct msghdr *msg, size_t len) |
646 | { | |
647 | struct sock *sk = sock->sk; | |
b9dbdbc1 | 648 | int err; |
1da177e4 LT |
649 | |
650 | BT_DBG("sock %p, sk %p", sock, sk); | |
651 | ||
c1cbe4b7 BL |
652 | err = sock_error(sk); |
653 | if (err) | |
654 | return err; | |
1da177e4 LT |
655 | |
656 | if (msg->msg_flags & MSG_OOB) | |
657 | return -EOPNOTSUPP; | |
658 | ||
659 | lock_sock(sk); | |
660 | ||
661 | if (sk->sk_state == BT_CONNECTED) | |
662 | err = sco_send_frame(sk, msg, len); | |
663 | else | |
664 | err = -ENOTCONN; | |
665 | ||
666 | release_sock(sk); | |
667 | return err; | |
668 | } | |
669 | ||
2f69a82a | 670 | static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
fa5513be FD |
671 | { |
672 | struct hci_dev *hdev = conn->hdev; | |
673 | ||
674 | BT_DBG("conn %p", conn); | |
675 | ||
676 | conn->state = BT_CONFIG; | |
677 | ||
678 | if (!lmp_esco_capable(hdev)) { | |
679 | struct hci_cp_accept_conn_req cp; | |
680 | ||
681 | bacpy(&cp.bdaddr, &conn->dst); | |
33f24048 | 682 | cp.role = 0x00; /* Ignored */ |
fa5513be FD |
683 | |
684 | hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); | |
685 | } else { | |
686 | struct hci_cp_accept_sync_conn_req cp; | |
687 | ||
688 | bacpy(&cp.bdaddr, &conn->dst); | |
689 | cp.pkt_type = cpu_to_le16(conn->pkt_type); | |
690 | ||
dcf4adbf JP |
691 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
692 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
2f69a82a FD |
693 | cp.content_format = cpu_to_le16(setting); |
694 | ||
695 | switch (setting & SCO_AIRMODE_MASK) { | |
696 | case SCO_AIRMODE_TRANSP: | |
697 | if (conn->pkt_type & ESCO_2EV3) | |
dcf4adbf | 698 | cp.max_latency = cpu_to_le16(0x0008); |
2f69a82a | 699 | else |
dcf4adbf | 700 | cp.max_latency = cpu_to_le16(0x000D); |
2f69a82a FD |
701 | cp.retrans_effort = 0x02; |
702 | break; | |
703 | case SCO_AIRMODE_CVSD: | |
dcf4adbf | 704 | cp.max_latency = cpu_to_le16(0xffff); |
2f69a82a FD |
705 | cp.retrans_effort = 0xff; |
706 | break; | |
707 | } | |
fa5513be FD |
708 | |
709 | hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, | |
710 | sizeof(cp), &cp); | |
711 | } | |
712 | } | |
713 | ||
20714bfe FD |
714 | static int sco_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
715 | struct msghdr *msg, size_t len, int flags) | |
716 | { | |
717 | struct sock *sk = sock->sk; | |
718 | struct sco_pinfo *pi = sco_pi(sk); | |
719 | ||
720 | lock_sock(sk); | |
721 | ||
722 | if (sk->sk_state == BT_CONNECT2 && | |
723 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { | |
2f69a82a | 724 | sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
20714bfe FD |
725 | sk->sk_state = BT_CONFIG; |
726 | ||
727 | release_sock(sk); | |
728 | return 0; | |
729 | } | |
730 | ||
731 | release_sock(sk); | |
732 | ||
733 | return bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
734 | } | |
735 | ||
b7058842 | 736 | static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
1da177e4 LT |
737 | { |
738 | struct sock *sk = sock->sk; | |
ad10b1a4 FD |
739 | int len, err = 0; |
740 | struct bt_voice voice; | |
b96e9c67 | 741 | u32 opt; |
1da177e4 LT |
742 | |
743 | BT_DBG("sk %p", sk); | |
744 | ||
745 | lock_sock(sk); | |
746 | ||
747 | switch (optname) { | |
b96e9c67 FD |
748 | |
749 | case BT_DEFER_SETUP: | |
750 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
751 | err = -EINVAL; | |
752 | break; | |
753 | } | |
754 | ||
755 | if (get_user(opt, (u32 __user *) optval)) { | |
756 | err = -EFAULT; | |
757 | break; | |
758 | } | |
759 | ||
760 | if (opt) | |
761 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
762 | else | |
763 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
764 | break; | |
765 | ||
ad10b1a4 FD |
766 | case BT_VOICE: |
767 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && | |
768 | sk->sk_state != BT_CONNECT2) { | |
769 | err = -EINVAL; | |
770 | break; | |
771 | } | |
772 | ||
773 | voice.setting = sco_pi(sk)->setting; | |
774 | ||
775 | len = min_t(unsigned int, sizeof(voice), optlen); | |
776 | if (copy_from_user((char *) &voice, optval, len)) { | |
777 | err = -EFAULT; | |
778 | break; | |
779 | } | |
780 | ||
781 | /* Explicitly check for these values */ | |
782 | if (voice.setting != BT_VOICE_TRANSPARENT && | |
783 | voice.setting != BT_VOICE_CVSD_16BIT) { | |
784 | err = -EINVAL; | |
785 | break; | |
786 | } | |
787 | ||
788 | sco_pi(sk)->setting = voice.setting; | |
789 | break; | |
790 | ||
1da177e4 LT |
791 | default: |
792 | err = -ENOPROTOOPT; | |
793 | break; | |
794 | } | |
795 | ||
796 | release_sock(sk); | |
797 | return err; | |
798 | } | |
799 | ||
d58daf42 | 800 | static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
1da177e4 LT |
801 | { |
802 | struct sock *sk = sock->sk; | |
803 | struct sco_options opts; | |
804 | struct sco_conninfo cinfo; | |
8e87d142 | 805 | int len, err = 0; |
1da177e4 LT |
806 | |
807 | BT_DBG("sk %p", sk); | |
808 | ||
809 | if (get_user(len, optlen)) | |
810 | return -EFAULT; | |
811 | ||
812 | lock_sock(sk); | |
813 | ||
814 | switch (optname) { | |
815 | case SCO_OPTIONS: | |
9d225d22 JH |
816 | if (sk->sk_state != BT_CONNECTED && |
817 | !(sk->sk_state == BT_CONNECT2 && | |
818 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
819 | err = -ENOTCONN; |
820 | break; | |
821 | } | |
822 | ||
823 | opts.mtu = sco_pi(sk)->conn->mtu; | |
824 | ||
825 | BT_DBG("mtu %d", opts.mtu); | |
826 | ||
827 | len = min_t(unsigned int, len, sizeof(opts)); | |
828 | if (copy_to_user(optval, (char *)&opts, len)) | |
829 | err = -EFAULT; | |
830 | ||
831 | break; | |
832 | ||
833 | case SCO_CONNINFO: | |
9d225d22 JH |
834 | if (sk->sk_state != BT_CONNECTED && |
835 | !(sk->sk_state == BT_CONNECT2 && | |
836 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { | |
1da177e4 LT |
837 | err = -ENOTCONN; |
838 | break; | |
839 | } | |
840 | ||
c4c896e1 | 841 | memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4 LT |
842 | cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; |
843 | memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); | |
844 | ||
845 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
846 | if (copy_to_user(optval, (char *)&cinfo, len)) | |
847 | err = -EFAULT; | |
848 | ||
849 | break; | |
850 | ||
851 | default: | |
852 | err = -ENOPROTOOPT; | |
853 | break; | |
854 | } | |
855 | ||
856 | release_sock(sk); | |
857 | return err; | |
858 | } | |
859 | ||
d58daf42 MH |
860 | static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) |
861 | { | |
862 | struct sock *sk = sock->sk; | |
863 | int len, err = 0; | |
ad10b1a4 | 864 | struct bt_voice voice; |
d58daf42 MH |
865 | |
866 | BT_DBG("sk %p", sk); | |
867 | ||
868 | if (level == SOL_SCO) | |
869 | return sco_sock_getsockopt_old(sock, optname, optval, optlen); | |
870 | ||
871 | if (get_user(len, optlen)) | |
872 | return -EFAULT; | |
873 | ||
874 | lock_sock(sk); | |
875 | ||
876 | switch (optname) { | |
b96e9c67 FD |
877 | |
878 | case BT_DEFER_SETUP: | |
879 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
880 | err = -EINVAL; | |
881 | break; | |
882 | } | |
883 | ||
884 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), | |
885 | (u32 __user *) optval)) | |
886 | err = -EFAULT; | |
887 | ||
888 | break; | |
889 | ||
ad10b1a4 FD |
890 | case BT_VOICE: |
891 | voice.setting = sco_pi(sk)->setting; | |
892 | ||
893 | len = min_t(unsigned int, len, sizeof(voice)); | |
894 | if (copy_to_user(optval, (char *)&voice, len)) | |
895 | err = -EFAULT; | |
896 | ||
897 | break; | |
898 | ||
d58daf42 MH |
899 | default: |
900 | err = -ENOPROTOOPT; | |
901 | break; | |
902 | } | |
903 | ||
904 | release_sock(sk); | |
905 | return err; | |
906 | } | |
907 | ||
fd0b3ff7 MH |
908 | static int sco_sock_shutdown(struct socket *sock, int how) |
909 | { | |
910 | struct sock *sk = sock->sk; | |
911 | int err = 0; | |
912 | ||
913 | BT_DBG("sock %p, sk %p", sock, sk); | |
914 | ||
915 | if (!sk) | |
916 | return 0; | |
917 | ||
918 | lock_sock(sk); | |
919 | if (!sk->sk_shutdown) { | |
920 | sk->sk_shutdown = SHUTDOWN_MASK; | |
921 | sco_sock_clear_timer(sk); | |
922 | __sco_sock_close(sk); | |
923 | ||
924 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
925 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
be7c2b99 | 926 | sk->sk_lingertime); |
fd0b3ff7 MH |
927 | } |
928 | release_sock(sk); | |
929 | return err; | |
930 | } | |
931 | ||
1da177e4 LT |
932 | static int sco_sock_release(struct socket *sock) |
933 | { | |
934 | struct sock *sk = sock->sk; | |
935 | int err = 0; | |
936 | ||
937 | BT_DBG("sock %p, sk %p", sock, sk); | |
938 | ||
939 | if (!sk) | |
940 | return 0; | |
941 | ||
942 | sco_sock_close(sk); | |
943 | ||
944 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) { | |
945 | lock_sock(sk); | |
946 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
947 | release_sock(sk); | |
948 | } | |
949 | ||
950 | sock_orphan(sk); | |
951 | sco_sock_kill(sk); | |
952 | return err; | |
953 | } | |
954 | ||
955 | static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent) | |
956 | { | |
957 | BT_DBG("conn %p", conn); | |
958 | ||
959 | sco_pi(sk)->conn = conn; | |
960 | conn->sk = sk; | |
961 | ||
962 | if (parent) | |
963 | bt_accept_enqueue(parent, sk); | |
964 | } | |
965 | ||
8e87d142 | 966 | /* Delete channel. |
1da177e4 LT |
967 | * Must be called on the locked socket. */ |
968 | static void sco_chan_del(struct sock *sk, int err) | |
969 | { | |
970 | struct sco_conn *conn; | |
971 | ||
972 | conn = sco_pi(sk)->conn; | |
973 | ||
974 | BT_DBG("sk %p, conn %p, err %d", sk, conn, err); | |
975 | ||
0b27a4b9 GP |
976 | if (conn) { |
977 | sco_conn_lock(conn); | |
978 | conn->sk = NULL; | |
979 | sco_pi(sk)->conn = NULL; | |
980 | sco_conn_unlock(conn); | |
981 | ||
982 | if (conn->hcon) | |
76a68ba0 | 983 | hci_conn_drop(conn->hcon); |
0b27a4b9 GP |
984 | } |
985 | ||
1da177e4 LT |
986 | sk->sk_state = BT_CLOSED; |
987 | sk->sk_err = err; | |
988 | sk->sk_state_change(sk); | |
989 | ||
990 | sock_set_flag(sk, SOCK_ZAPPED); | |
991 | } | |
992 | ||
993 | static void sco_conn_ready(struct sco_conn *conn) | |
994 | { | |
735cbc47 AE |
995 | struct sock *parent; |
996 | struct sock *sk = conn->sk; | |
1da177e4 LT |
997 | |
998 | BT_DBG("conn %p", conn); | |
999 | ||
735cbc47 | 1000 | if (sk) { |
1da177e4 LT |
1001 | sco_sock_clear_timer(sk); |
1002 | bh_lock_sock(sk); | |
1003 | sk->sk_state = BT_CONNECTED; | |
1004 | sk->sk_state_change(sk); | |
1005 | bh_unlock_sock(sk); | |
1006 | } else { | |
40528088 AG |
1007 | sco_conn_lock(conn); |
1008 | ||
041987cf | 1009 | parent = sco_get_sock_listen(&conn->hcon->src); |
40528088 AG |
1010 | if (!parent) { |
1011 | sco_conn_unlock(conn); | |
1012 | return; | |
1013 | } | |
1da177e4 LT |
1014 | |
1015 | bh_lock_sock(parent); | |
1016 | ||
b9dbdbc1 | 1017 | sk = sco_sock_alloc(sock_net(parent), NULL, |
be7c2b99 | 1018 | BTPROTO_SCO, GFP_ATOMIC); |
1da177e4 LT |
1019 | if (!sk) { |
1020 | bh_unlock_sock(parent); | |
40528088 AG |
1021 | sco_conn_unlock(conn); |
1022 | return; | |
1da177e4 LT |
1023 | } |
1024 | ||
1025 | sco_sock_init(sk, parent); | |
1026 | ||
eea96364 MH |
1027 | bacpy(&sco_pi(sk)->src, &conn->hcon->src); |
1028 | bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); | |
1da177e4 LT |
1029 | |
1030 | hci_conn_hold(conn->hcon); | |
1031 | __sco_chan_add(conn, sk, parent); | |
1032 | ||
20714bfe FD |
1033 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
1034 | sk->sk_state = BT_CONNECT2; | |
1035 | else | |
1036 | sk->sk_state = BT_CONNECTED; | |
1da177e4 LT |
1037 | |
1038 | /* Wake up parent */ | |
676d2369 | 1039 | parent->sk_data_ready(parent); |
1da177e4 LT |
1040 | |
1041 | bh_unlock_sock(parent); | |
1da177e4 | 1042 | |
40528088 AG |
1043 | sco_conn_unlock(conn); |
1044 | } | |
1da177e4 LT |
1045 | } |
1046 | ||
1047 | /* ----- SCO interface with lower layer (HCI) ----- */ | |
20714bfe | 1048 | int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4 | 1049 | { |
fc5fef61 | 1050 | struct sock *sk; |
71aeeaa1 MH |
1051 | int lm = 0; |
1052 | ||
6ed93dc6 | 1053 | BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4 | 1054 | |
71aeeaa1 MH |
1055 | /* Find listening sockets */ |
1056 | read_lock(&sco_sk_list.lock); | |
b67bfe0d | 1057 | sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1 MH |
1058 | if (sk->sk_state != BT_LISTEN) |
1059 | continue; | |
1060 | ||
eea96364 MH |
1061 | if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || |
1062 | !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { | |
71aeeaa1 | 1063 | lm |= HCI_LM_ACCEPT; |
20714bfe FD |
1064 | |
1065 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) | |
1066 | *flags |= HCI_PROTO_DEFER; | |
71aeeaa1 MH |
1067 | break; |
1068 | } | |
1069 | } | |
1070 | read_unlock(&sco_sk_list.lock); | |
1071 | ||
1072 | return lm; | |
1da177e4 LT |
1073 | } |
1074 | ||
9e664631 | 1075 | void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4 | 1076 | { |
6ed93dc6 | 1077 | BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status); |
1da177e4 LT |
1078 | if (!status) { |
1079 | struct sco_conn *conn; | |
1080 | ||
519e42b3 | 1081 | conn = sco_conn_add(hcon); |
1da177e4 LT |
1082 | if (conn) |
1083 | sco_conn_ready(conn); | |
8e87d142 | 1084 | } else |
e175072f | 1085 | sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4 LT |
1086 | } |
1087 | ||
9e664631 | 1088 | void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4 LT |
1089 | { |
1090 | BT_DBG("hcon %p reason %d", hcon, reason); | |
1091 | ||
e175072f | 1092 | sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4 LT |
1093 | } |
1094 | ||
686ebf28 | 1095 | int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4 LT |
1096 | { |
1097 | struct sco_conn *conn = hcon->sco_data; | |
1098 | ||
1099 | if (!conn) | |
1100 | goto drop; | |
1101 | ||
1102 | BT_DBG("conn %p len %d", conn, skb->len); | |
1103 | ||
1104 | if (skb->len) { | |
1105 | sco_recv_frame(conn, skb); | |
1106 | return 0; | |
1107 | } | |
1108 | ||
1109 | drop: | |
8e87d142 | 1110 | kfree_skb(skb); |
1da177e4 LT |
1111 | return 0; |
1112 | } | |
1113 | ||
aef7d97c | 1114 | static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1115 | { |
1116 | struct sock *sk; | |
1da177e4 | 1117 | |
ee65d19e | 1118 | read_lock(&sco_sk_list.lock); |
1da177e4 | 1119 | |
b67bfe0d | 1120 | sk_for_each(sk, &sco_sk_list.head) { |
eea96364 MH |
1121 | seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src, |
1122 | &sco_pi(sk)->dst, sk->sk_state); | |
be9d1227 | 1123 | } |
1da177e4 | 1124 | |
ee65d19e | 1125 | read_unlock(&sco_sk_list.lock); |
1da177e4 | 1126 | |
aef7d97c | 1127 | return 0; |
1da177e4 LT |
1128 | } |
1129 | ||
aef7d97c MH |
1130 | static int sco_debugfs_open(struct inode *inode, struct file *file) |
1131 | { | |
1132 | return single_open(file, sco_debugfs_show, inode->i_private); | |
1133 | } | |
1134 | ||
1135 | static const struct file_operations sco_debugfs_fops = { | |
1136 | .open = sco_debugfs_open, | |
1137 | .read = seq_read, | |
1138 | .llseek = seq_lseek, | |
1139 | .release = single_release, | |
1140 | }; | |
1141 | ||
1142 | static struct dentry *sco_debugfs; | |
1da177e4 | 1143 | |
90ddc4f0 | 1144 | static const struct proto_ops sco_sock_ops = { |
1da177e4 LT |
1145 | .family = PF_BLUETOOTH, |
1146 | .owner = THIS_MODULE, | |
1147 | .release = sco_sock_release, | |
1148 | .bind = sco_sock_bind, | |
1149 | .connect = sco_sock_connect, | |
1150 | .listen = sco_sock_listen, | |
1151 | .accept = sco_sock_accept, | |
1152 | .getname = sco_sock_getname, | |
1153 | .sendmsg = sco_sock_sendmsg, | |
20714bfe | 1154 | .recvmsg = sco_sock_recvmsg, |
1da177e4 | 1155 | .poll = bt_sock_poll, |
3241ad82 | 1156 | .ioctl = bt_sock_ioctl, |
1da177e4 LT |
1157 | .mmap = sock_no_mmap, |
1158 | .socketpair = sock_no_socketpair, | |
fd0b3ff7 | 1159 | .shutdown = sco_sock_shutdown, |
1da177e4 LT |
1160 | .setsockopt = sco_sock_setsockopt, |
1161 | .getsockopt = sco_sock_getsockopt | |
1162 | }; | |
1163 | ||
ec1b4cf7 | 1164 | static const struct net_proto_family sco_sock_family_ops = { |
1da177e4 LT |
1165 | .family = PF_BLUETOOTH, |
1166 | .owner = THIS_MODULE, | |
1167 | .create = sco_sock_create, | |
1168 | }; | |
1169 | ||
64274518 | 1170 | int __init sco_init(void) |
1da177e4 LT |
1171 | { |
1172 | int err; | |
1173 | ||
1174 | err = proto_register(&sco_proto, 0); | |
1175 | if (err < 0) | |
1176 | return err; | |
1177 | ||
1178 | err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); | |
1179 | if (err < 0) { | |
1180 | BT_ERR("SCO socket registration failed"); | |
1181 | goto error; | |
1182 | } | |
1183 | ||
b0316615 | 1184 | err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212 MY |
1185 | if (err < 0) { |
1186 | BT_ERR("Failed to create SCO proc file"); | |
1187 | bt_sock_unregister(BTPROTO_SCO); | |
1188 | goto error; | |
1189 | } | |
1190 | ||
1da177e4 LT |
1191 | BT_INFO("SCO socket layer initialized"); |
1192 | ||
1120e4bf MH |
1193 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1194 | return 0; | |
1195 | ||
1196 | sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, | |
1197 | NULL, &sco_debugfs_fops); | |
1198 | ||
1da177e4 LT |
1199 | return 0; |
1200 | ||
1201 | error: | |
1202 | proto_unregister(&sco_proto); | |
1203 | return err; | |
1204 | } | |
1205 | ||
64274518 | 1206 | void __exit sco_exit(void) |
1da177e4 | 1207 | { |
de9b9212 MY |
1208 | bt_procfs_cleanup(&init_net, "sco"); |
1209 | ||
aef7d97c | 1210 | debugfs_remove(sco_debugfs); |
1da177e4 | 1211 | |
5e9d7f86 | 1212 | bt_sock_unregister(BTPROTO_SCO); |
1da177e4 | 1213 | |
1da177e4 LT |
1214 | proto_unregister(&sco_proto); |
1215 | } | |
1216 | ||
7cb127d5 MH |
1217 | module_param(disable_esco, bool, 0644); |
1218 | MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |