1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
4 Copyright 2023 NXP
5
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
11
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
24 */
25
26 #ifndef __BLUETOOTH_H
27 #define __BLUETOOTH_H
28
29 #include <linux/poll.h>
30 #include <net/sock.h>
31 #include <linux/seq_file.h>
32
33 #define BT_SUBSYS_VERSION 2
34 #define BT_SUBSYS_REVISION 22
35
36 #ifndef AF_BLUETOOTH
37 #define AF_BLUETOOTH 31
38 #define PF_BLUETOOTH AF_BLUETOOTH
39 #endif
40
41 /* Bluetooth versions */
42 #define BLUETOOTH_VER_1_1 1
43 #define BLUETOOTH_VER_1_2 2
44 #define BLUETOOTH_VER_2_0 3
45 #define BLUETOOTH_VER_2_1 4
46 #define BLUETOOTH_VER_4_0 6
47
48 /* Reserv for core and drivers use */
49 #define BT_SKB_RESERVE 8
50
51 #define BTPROTO_L2CAP 0
52 #define BTPROTO_HCI 1
53 #define BTPROTO_SCO 2
54 #define BTPROTO_RFCOMM 3
55 #define BTPROTO_BNEP 4
56 #define BTPROTO_CMTP 5
57 #define BTPROTO_HIDP 6
58 #define BTPROTO_AVDTP 7
59 #define BTPROTO_ISO 8
60 #define BTPROTO_LAST BTPROTO_ISO
61
62 #define SOL_HCI 0
63 #define SOL_L2CAP 6
64 #define SOL_SCO 17
65 #define SOL_RFCOMM 18
66
67 #define BT_SECURITY 4
68 struct bt_security {
69 __u8 level;
70 __u8 key_size;
71 };
72 #define BT_SECURITY_SDP 0
73 #define BT_SECURITY_LOW 1
74 #define BT_SECURITY_MEDIUM 2
75 #define BT_SECURITY_HIGH 3
76 #define BT_SECURITY_FIPS 4
77
78 #define BT_DEFER_SETUP 7
79
80 #define BT_FLUSHABLE 8
81
82 #define BT_FLUSHABLE_OFF 0
83 #define BT_FLUSHABLE_ON 1
84
85 #define BT_POWER 9
86 struct bt_power {
87 __u8 force_active;
88 };
89 #define BT_POWER_FORCE_ACTIVE_OFF 0
90 #define BT_POWER_FORCE_ACTIVE_ON 1
91
92 #define BT_CHANNEL_POLICY 10
93
94 /* BR/EDR only (default policy)
95 * AMP controllers cannot be used.
96 * Channel move requests from the remote device are denied.
97 * If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
98 */
99 #define BT_CHANNEL_POLICY_BREDR_ONLY 0
100
101 /* BR/EDR Preferred
102 * Allow use of AMP controllers.
103 * If the L2CAP channel is currently on AMP, move it to BR/EDR.
104 * Channel move requests from the remote device are allowed.
105 */
106 #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
107
108 /* AMP Preferred
109 * Allow use of AMP controllers
110 * If the L2CAP channel is currently on BR/EDR and AMP controller
111 * resources are available, initiate a channel move to AMP.
112 * Channel move requests from the remote device are allowed.
113 * If the L2CAP socket has not been connected yet, try to create
114 * and configure the channel directly on an AMP controller rather
115 * than BR/EDR.
116 */
117 #define BT_CHANNEL_POLICY_AMP_PREFERRED 2
118
119 #define BT_VOICE 11
120 struct bt_voice {
121 __u16 setting;
122 };
123
124 #define BT_VOICE_TRANSPARENT 0x0003
125 #define BT_VOICE_CVSD_16BIT 0x0060
126 #define BT_VOICE_TRANSPARENT_16BIT 0x0063
127
128 #define BT_SNDMTU 12
129 #define BT_RCVMTU 13
130 #define BT_PHY 14
131
132 #define BT_PHY_BR_1M_1SLOT 0x00000001
133 #define BT_PHY_BR_1M_3SLOT 0x00000002
134 #define BT_PHY_BR_1M_5SLOT 0x00000004
135 #define BT_PHY_EDR_2M_1SLOT 0x00000008
136 #define BT_PHY_EDR_2M_3SLOT 0x00000010
137 #define BT_PHY_EDR_2M_5SLOT 0x00000020
138 #define BT_PHY_EDR_3M_1SLOT 0x00000040
139 #define BT_PHY_EDR_3M_3SLOT 0x00000080
140 #define BT_PHY_EDR_3M_5SLOT 0x00000100
141 #define BT_PHY_LE_1M_TX 0x00000200
142 #define BT_PHY_LE_1M_RX 0x00000400
143 #define BT_PHY_LE_2M_TX 0x00000800
144 #define BT_PHY_LE_2M_RX 0x00001000
145 #define BT_PHY_LE_CODED_TX 0x00002000
146 #define BT_PHY_LE_CODED_RX 0x00004000
147
148 #define BT_MODE 15
149
150 #define BT_MODE_BASIC 0x00
151 #define BT_MODE_ERTM 0x01
152 #define BT_MODE_STREAMING 0x02
153 #define BT_MODE_LE_FLOWCTL 0x03
154 #define BT_MODE_EXT_FLOWCTL 0x04
155
156 #define BT_PKT_STATUS 16
157
158 #define BT_SCM_PKT_STATUS 0x03
159 #define BT_SCM_ERROR 0x04
160
161 #define BT_ISO_QOS 17
162
163 #define BT_ISO_QOS_CIG_UNSET 0xff
164 #define BT_ISO_QOS_CIS_UNSET 0xff
165
166 #define BT_ISO_QOS_BIG_UNSET 0xff
167 #define BT_ISO_QOS_BIS_UNSET 0xff
168
169 #define BT_ISO_SYNC_TIMEOUT 0x07d0 /* 20 secs */
170
171 struct bt_iso_io_qos {
172 __u32 interval;
173 __u16 latency;
174 __u16 sdu;
175 __u8 phy;
176 __u8 rtn;
177 };
178
179 struct bt_iso_ucast_qos {
180 __u8 cig;
181 __u8 cis;
182 __u8 sca;
183 __u8 packing;
184 __u8 framing;
185 struct bt_iso_io_qos in;
186 struct bt_iso_io_qos out;
187 };
188
189 struct bt_iso_bcast_qos {
190 __u8 big;
191 __u8 bis;
192 __u8 sync_factor;
193 __u8 packing;
194 __u8 framing;
195 struct bt_iso_io_qos in;
196 struct bt_iso_io_qos out;
197 __u8 encryption;
198 __u8 bcode[16];
199 __u8 options;
200 __u16 skip;
201 __u16 sync_timeout;
202 __u8 sync_cte_type;
203 __u8 mse;
204 __u16 timeout;
205 };
206
207 struct bt_iso_qos {
208 union {
209 struct bt_iso_ucast_qos ucast;
210 struct bt_iso_bcast_qos bcast;
211 };
212 };
213
214 #define BT_ISO_PHY_1M 0x01
215 #define BT_ISO_PHY_2M 0x02
216 #define BT_ISO_PHY_CODED 0x04
217 #define BT_ISO_PHY_ANY (BT_ISO_PHY_1M | BT_ISO_PHY_2M | \
218 BT_ISO_PHY_CODED)
219
220 #define BT_CODEC 19
221
222 struct bt_codec_caps {
223 __u8 len;
224 __u8 data[];
225 } __packed;
226
227 struct bt_codec {
228 __u8 id;
229 __u16 cid;
230 __u16 vid;
231 __u8 data_path;
232 __u8 num_caps;
233 } __packed;
234
235 struct bt_codecs {
236 __u8 num_codecs;
237 struct bt_codec codecs[];
238 } __packed;
239
240 #define BT_CODEC_CVSD 0x02
241 #define BT_CODEC_TRANSPARENT 0x03
242 #define BT_CODEC_MSBC 0x05
243
244 #define BT_ISO_BASE 20
245
246 __printf(1, 2)
247 void bt_info(const char *fmt, ...);
248 __printf(1, 2)
249 void bt_warn(const char *fmt, ...);
250 __printf(1, 2)
251 void bt_err(const char *fmt, ...);
252 #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG)
253 void bt_dbg_set(bool enable);
254 bool bt_dbg_get(void);
255 __printf(1, 2)
256 void bt_dbg(const char *fmt, ...);
257 #endif
258 __printf(1, 2)
259 void bt_warn_ratelimited(const char *fmt, ...);
260 __printf(1, 2)
261 void bt_err_ratelimited(const char *fmt, ...);
262
263 #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
264 #define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__)
265 #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
266
267 #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG)
268 #define BT_DBG(fmt, ...) bt_dbg(fmt "\n", ##__VA_ARGS__)
269 #else
270 #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
271 #endif
272
273 #define bt_dev_name(hdev) ((hdev) ? (hdev)->name : "null")
274
275 #define bt_dev_info(hdev, fmt, ...) \
276 BT_INFO("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
277 #define bt_dev_warn(hdev, fmt, ...) \
278 BT_WARN("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
279 #define bt_dev_err(hdev, fmt, ...) \
280 BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
281 #define bt_dev_dbg(hdev, fmt, ...) \
282 BT_DBG("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
283
284 #define bt_dev_warn_ratelimited(hdev, fmt, ...) \
285 bt_warn_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
286 #define bt_dev_err_ratelimited(hdev, fmt, ...) \
287 bt_err_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
288
289 /* Connection and socket states */
290 enum bt_sock_state {
291 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
292 BT_OPEN,
293 BT_BOUND,
294 BT_LISTEN,
295 BT_CONNECT,
296 BT_CONNECT2,
297 BT_CONFIG,
298 BT_DISCONN,
299 BT_CLOSED
300 };
301
302 /* If unused will be removed by compiler */
state_to_string(int state)303 static inline const char *state_to_string(int state)
304 {
305 switch (state) {
306 case BT_CONNECTED:
307 return "BT_CONNECTED";
308 case BT_OPEN:
309 return "BT_OPEN";
310 case BT_BOUND:
311 return "BT_BOUND";
312 case BT_LISTEN:
313 return "BT_LISTEN";
314 case BT_CONNECT:
315 return "BT_CONNECT";
316 case BT_CONNECT2:
317 return "BT_CONNECT2";
318 case BT_CONFIG:
319 return "BT_CONFIG";
320 case BT_DISCONN:
321 return "BT_DISCONN";
322 case BT_CLOSED:
323 return "BT_CLOSED";
324 }
325
326 return "invalid state";
327 }
328
329 /* BD Address */
330 typedef struct {
331 __u8 b[6];
332 } __packed bdaddr_t;
333
334 /* BD Address type */
335 #define BDADDR_BREDR 0x00
336 #define BDADDR_LE_PUBLIC 0x01
337 #define BDADDR_LE_RANDOM 0x02
338
bdaddr_type_is_valid(u8 type)339 static inline bool bdaddr_type_is_valid(u8 type)
340 {
341 switch (type) {
342 case BDADDR_BREDR:
343 case BDADDR_LE_PUBLIC:
344 case BDADDR_LE_RANDOM:
345 return true;
346 }
347
348 return false;
349 }
350
bdaddr_type_is_le(u8 type)351 static inline bool bdaddr_type_is_le(u8 type)
352 {
353 switch (type) {
354 case BDADDR_LE_PUBLIC:
355 case BDADDR_LE_RANDOM:
356 return true;
357 }
358
359 return false;
360 }
361
362 #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
363 #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
364
365 /* Copy, swap, convert BD Address */
bacmp(const bdaddr_t * ba1,const bdaddr_t * ba2)366 static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2)
367 {
368 return memcmp(ba1, ba2, sizeof(bdaddr_t));
369 }
bacpy(bdaddr_t * dst,const bdaddr_t * src)370 static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src)
371 {
372 memcpy(dst, src, sizeof(bdaddr_t));
373 }
374
375 void baswap(bdaddr_t *dst, const bdaddr_t *src);
376
377 /* Common socket structures and functions */
378
379 #define bt_sk(__sk) ((struct bt_sock *) __sk)
380
381 struct bt_sock {
382 struct sock sk;
383 struct list_head accept_q;
384 struct sock *parent;
385 unsigned long flags;
386 void (*skb_msg_name)(struct sk_buff *, void *, int *);
387 void (*skb_put_cmsg)(struct sk_buff *, struct msghdr *, struct sock *);
388 };
389
390 enum {
391 BT_SK_DEFER_SETUP,
392 BT_SK_SUSPEND,
393 BT_SK_PKT_STATUS
394 };
395
396 struct bt_sock_list {
397 struct hlist_head head;
398 rwlock_t lock;
399 #ifdef CONFIG_PROC_FS
400 int (* custom_seq_show)(struct seq_file *, void *);
401 #endif
402 };
403
404 int bt_sock_register(int proto, const struct net_proto_family *ops);
405 void bt_sock_unregister(int proto);
406 void bt_sock_link(struct bt_sock_list *l, struct sock *s);
407 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
408 bool bt_sock_linked(struct bt_sock_list *l, struct sock *s);
409 struct sock *bt_sock_alloc(struct net *net, struct socket *sock,
410 struct proto *prot, int proto, gfp_t prio, int kern);
411 int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
412 int flags);
413 int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg,
414 size_t len, int flags);
415 __poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait);
416 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
417 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
418 int bt_sock_wait_ready(struct sock *sk, unsigned int msg_flags);
419
420 void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh);
421 void bt_accept_unlink(struct sock *sk);
422 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
423
424 /* Skb helpers */
425 struct l2cap_ctrl {
426 u8 sframe:1,
427 poll:1,
428 final:1,
429 fcs:1,
430 sar:2,
431 super:2;
432
433 u16 reqseq;
434 u16 txseq;
435 u8 retries;
436 __le16 psm;
437 bdaddr_t bdaddr;
438 struct l2cap_chan *chan;
439 };
440
441 struct hci_dev;
442
443 typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
444 typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status,
445 u16 opcode, struct sk_buff *skb);
446
447 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status,
448 hci_req_complete_t *req_complete,
449 hci_req_complete_skb_t *req_complete_skb);
450
451 #define HCI_REQ_START BIT(0)
452 #define HCI_REQ_SKB BIT(1)
453
454 struct hci_ctrl {
455 struct sock *sk;
456 u16 opcode;
457 u8 req_flags;
458 u8 req_event;
459 union {
460 hci_req_complete_t req_complete;
461 hci_req_complete_skb_t req_complete_skb;
462 };
463 };
464
465 struct mgmt_ctrl {
466 struct hci_dev *hdev;
467 u16 opcode;
468 };
469
470 struct bt_skb_cb {
471 u8 pkt_type;
472 u8 force_active;
473 u16 expect;
474 u8 incoming:1;
475 u8 pkt_status:2;
476 union {
477 struct l2cap_ctrl l2cap;
478 struct hci_ctrl hci;
479 struct mgmt_ctrl mgmt;
480 struct scm_creds creds;
481 };
482 };
483 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
484
485 #define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
486 #define hci_skb_pkt_status(skb) bt_cb((skb))->pkt_status
487 #define hci_skb_expect(skb) bt_cb((skb))->expect
488 #define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
489 #define hci_skb_event(skb) bt_cb((skb))->hci.req_event
490 #define hci_skb_sk(skb) bt_cb((skb))->hci.sk
491
bt_skb_alloc(unsigned int len,gfp_t how)492 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
493 {
494 struct sk_buff *skb;
495
496 skb = alloc_skb(len + BT_SKB_RESERVE, how);
497 if (skb)
498 skb_reserve(skb, BT_SKB_RESERVE);
499 return skb;
500 }
501
bt_skb_send_alloc(struct sock * sk,unsigned long len,int nb,int * err)502 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
503 unsigned long len, int nb, int *err)
504 {
505 struct sk_buff *skb;
506
507 skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
508 if (skb)
509 skb_reserve(skb, BT_SKB_RESERVE);
510
511 if (!skb && *err)
512 return NULL;
513
514 *err = sock_error(sk);
515 if (*err)
516 goto out;
517
518 if (sk->sk_shutdown) {
519 *err = -ECONNRESET;
520 goto out;
521 }
522
523 return skb;
524
525 out:
526 kfree_skb(skb);
527 return NULL;
528 }
529
530 /* Shall not be called with lock_sock held */
bt_skb_sendmsg(struct sock * sk,struct msghdr * msg,size_t len,size_t mtu,size_t headroom,size_t tailroom)531 static inline struct sk_buff *bt_skb_sendmsg(struct sock *sk,
532 struct msghdr *msg,
533 size_t len, size_t mtu,
534 size_t headroom, size_t tailroom)
535 {
536 struct sk_buff *skb;
537 size_t size = min_t(size_t, len, mtu);
538 int err;
539
540 skb = bt_skb_send_alloc(sk, size + headroom + tailroom,
541 msg->msg_flags & MSG_DONTWAIT, &err);
542 if (!skb)
543 return ERR_PTR(err);
544
545 skb_reserve(skb, headroom);
546 skb_tailroom_reserve(skb, mtu, tailroom);
547
548 if (!copy_from_iter_full(skb_put(skb, size), size, &msg->msg_iter)) {
549 kfree_skb(skb);
550 return ERR_PTR(-EFAULT);
551 }
552
553 skb->priority = READ_ONCE(sk->sk_priority);
554
555 return skb;
556 }
557
558 /* Similar to bt_skb_sendmsg but can split the msg into multiple fragments
559 * accourding to the MTU.
560 */
bt_skb_sendmmsg(struct sock * sk,struct msghdr * msg,size_t len,size_t mtu,size_t headroom,size_t tailroom)561 static inline struct sk_buff *bt_skb_sendmmsg(struct sock *sk,
562 struct msghdr *msg,
563 size_t len, size_t mtu,
564 size_t headroom, size_t tailroom)
565 {
566 struct sk_buff *skb, **frag;
567
568 skb = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom);
569 if (IS_ERR(skb))
570 return skb;
571
572 len -= skb->len;
573 if (!len)
574 return skb;
575
576 /* Add remaining data over MTU as continuation fragments */
577 frag = &skb_shinfo(skb)->frag_list;
578 while (len) {
579 struct sk_buff *tmp;
580
581 tmp = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom);
582 if (IS_ERR(tmp)) {
583 return skb;
584 }
585
586 len -= tmp->len;
587
588 *frag = tmp;
589 frag = &(*frag)->next;
590 }
591
592 return skb;
593 }
594
595 int bt_to_errno(u16 code);
596 __u8 bt_status(int err);
597
598 void hci_sock_set_flag(struct sock *sk, int nr);
599 void hci_sock_clear_flag(struct sock *sk, int nr);
600 int hci_sock_test_flag(struct sock *sk, int nr);
601 unsigned short hci_sock_get_channel(struct sock *sk);
602 u32 hci_sock_get_cookie(struct sock *sk);
603
604 int hci_sock_init(void);
605 void hci_sock_cleanup(void);
606
607 int bt_sysfs_init(void);
608 void bt_sysfs_cleanup(void);
609
610 int bt_procfs_init(struct net *net, const char *name,
611 struct bt_sock_list *sk_list,
612 int (*seq_show)(struct seq_file *, void *));
613 void bt_procfs_cleanup(struct net *net, const char *name);
614
615 extern struct dentry *bt_debugfs;
616
617 int l2cap_init(void);
618 void l2cap_exit(void);
619
620 #if IS_ENABLED(CONFIG_BT_BREDR)
621 int sco_init(void);
622 void sco_exit(void);
623 #else
sco_init(void)624 static inline int sco_init(void)
625 {
626 return 0;
627 }
628
sco_exit(void)629 static inline void sco_exit(void)
630 {
631 }
632 #endif
633
634 #if IS_ENABLED(CONFIG_BT_LE)
635 int iso_init(void);
636 int iso_exit(void);
637 bool iso_enabled(void);
638 #else
iso_init(void)639 static inline int iso_init(void)
640 {
641 return 0;
642 }
643
iso_exit(void)644 static inline int iso_exit(void)
645 {
646 return 0;
647 }
648
iso_enabled(void)649 static inline bool iso_enabled(void)
650 {
651 return false;
652 }
653 #endif
654
655 int mgmt_init(void);
656 void mgmt_exit(void);
657 void mgmt_cleanup(struct sock *sk);
658
659 void bt_sock_reclassify_lock(struct sock *sk, int proto);
660
661 #endif /* __BLUETOOTH_H */
662