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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 BlueZ - Bluetooth protocol stack for Linux
4 Copyright (C) 2000-2001 Qualcomm Incorporated
5 Copyright 2023 NXP
6
7 Written 2000,2001 by Maxim Krasnyansky <[email protected]>
8
9 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
10 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
11 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
12 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
13 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
14 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17
18 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
19 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
20 SOFTWARE IS DISCLAIMED.
21*/
22
23#ifndef __BLUETOOTH_H
24#define __BLUETOOTH_H
25
26#include <linux/poll.h>
27#include <net/sock.h>
28#include <linux/seq_file.h>
29#include <linux/ethtool.h>
30
31#define BT_SUBSYS_VERSION 2
32#define BT_SUBSYS_REVISION 22
33
34#ifndef AF_BLUETOOTH
35#define AF_BLUETOOTH 31
36#define PF_BLUETOOTH AF_BLUETOOTH
37#endif
38
39/* Bluetooth versions */
40#define BLUETOOTH_VER_1_1 1
41#define BLUETOOTH_VER_1_2 2
42#define BLUETOOTH_VER_2_0 3
43#define BLUETOOTH_VER_2_1 4
44#define BLUETOOTH_VER_4_0 6
45
46/* Reserv for core and drivers use */
47#define BT_SKB_RESERVE 8
48
49#define BTPROTO_L2CAP 0
50#define BTPROTO_HCI 1
51#define BTPROTO_SCO 2
52#define BTPROTO_RFCOMM 3
53#define BTPROTO_BNEP 4
54#define BTPROTO_CMTP 5
55#define BTPROTO_HIDP 6
56#define BTPROTO_AVDTP 7
57#define BTPROTO_ISO 8
58#define BTPROTO_LAST BTPROTO_ISO
59
60#define SOL_HCI 0
61#define SOL_L2CAP 6
62#define SOL_SCO 17
63#define SOL_RFCOMM 18
64
65#define BT_SECURITY 4
66struct bt_security {
67 __u8 level;
68 __u8 key_size;
69};
70#define BT_SECURITY_SDP 0
71#define BT_SECURITY_LOW 1
72#define BT_SECURITY_MEDIUM 2
73#define BT_SECURITY_HIGH 3
74#define BT_SECURITY_FIPS 4
75
76#define BT_DEFER_SETUP 7
77
78#define BT_FLUSHABLE 8
79
80#define BT_FLUSHABLE_OFF 0
81#define BT_FLUSHABLE_ON 1
82
83#define BT_POWER 9
84struct bt_power {
85 __u8 force_active;
86};
87#define BT_POWER_FORCE_ACTIVE_OFF 0
88#define BT_POWER_FORCE_ACTIVE_ON 1
89
90#define BT_CHANNEL_POLICY 10
91
92/* BR/EDR only (default policy)
93 * AMP controllers cannot be used.
94 * Channel move requests from the remote device are denied.
95 * If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
96 */
97#define BT_CHANNEL_POLICY_BREDR_ONLY 0
98
99/* BR/EDR Preferred
100 * Allow use of AMP controllers.
101 * If the L2CAP channel is currently on AMP, move it to BR/EDR.
102 * Channel move requests from the remote device are allowed.
103 */
104#define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
105
106/* AMP Preferred
107 * Allow use of AMP controllers
108 * If the L2CAP channel is currently on BR/EDR and AMP controller
109 * resources are available, initiate a channel move to AMP.
110 * Channel move requests from the remote device are allowed.
111 * If the L2CAP socket has not been connected yet, try to create
112 * and configure the channel directly on an AMP controller rather
113 * than BR/EDR.
114 */
115#define BT_CHANNEL_POLICY_AMP_PREFERRED 2
116
117#define BT_VOICE 11
118struct bt_voice {
119 __u16 setting;
120};
121
122#define BT_VOICE_TRANSPARENT 0x0003
123#define BT_VOICE_CVSD_16BIT 0x0060
124#define BT_VOICE_TRANSPARENT_16BIT 0x0063
125
126#define BT_SNDMTU 12
127#define BT_RCVMTU 13
128#define BT_PHY 14
129
130#define BT_PHY_BR_1M_1SLOT BIT(0)
131#define BT_PHY_BR_1M_3SLOT BIT(1)
132#define BT_PHY_BR_1M_5SLOT BIT(2)
133#define BT_PHY_EDR_2M_1SLOT BIT(3)
134#define BT_PHY_EDR_2M_3SLOT BIT(4)
135#define BT_PHY_EDR_2M_5SLOT BIT(5)
136#define BT_PHY_EDR_3M_1SLOT BIT(6)
137#define BT_PHY_EDR_3M_3SLOT BIT(7)
138#define BT_PHY_EDR_3M_5SLOT BIT(8)
139#define BT_PHY_LE_1M_TX BIT(9)
140#define BT_PHY_LE_1M_RX BIT(10)
141#define BT_PHY_LE_2M_TX BIT(11)
142#define BT_PHY_LE_2M_RX BIT(12)
143#define BT_PHY_LE_CODED_TX BIT(13)
144#define BT_PHY_LE_CODED_RX BIT(14)
145
146#define BT_PHY_BREDR_MASK (BT_PHY_BR_1M_1SLOT | BT_PHY_BR_1M_3SLOT | \
147 BT_PHY_BR_1M_5SLOT | BT_PHY_EDR_2M_1SLOT | \
148 BT_PHY_EDR_2M_3SLOT | BT_PHY_EDR_2M_5SLOT | \
149 BT_PHY_EDR_3M_1SLOT | BT_PHY_EDR_3M_3SLOT | \
150 BT_PHY_EDR_3M_5SLOT)
151#define BT_PHY_LE_MASK (BT_PHY_LE_1M_TX | BT_PHY_LE_1M_RX | \
152 BT_PHY_LE_2M_TX | BT_PHY_LE_2M_RX | \
153 BT_PHY_LE_CODED_TX | BT_PHY_LE_CODED_RX)
154
155#define BT_MODE 15
156
157#define BT_MODE_BASIC 0x00
158#define BT_MODE_ERTM 0x01
159#define BT_MODE_STREAMING 0x02
160#define BT_MODE_LE_FLOWCTL 0x03
161#define BT_MODE_EXT_FLOWCTL 0x04
162
163#define BT_PKT_STATUS 16
164
165#define BT_SCM_PKT_STATUS 0x03
166#define BT_SCM_ERROR 0x04
167
168#define BT_ISO_QOS 17
169
170#define BT_ISO_QOS_CIG_UNSET 0xff
171#define BT_ISO_QOS_CIS_UNSET 0xff
172
173#define BT_ISO_QOS_BIG_UNSET 0xff
174#define BT_ISO_QOS_BIS_UNSET 0xff
175
176#define BT_ISO_SYNC_TIMEOUT 0x07d0 /* 20 secs */
177
178struct bt_iso_io_qos {
179 __u32 interval;
180 __u16 latency;
181 __u16 sdu;
182 __u8 phys;
183 __u8 rtn;
184};
185
186struct bt_iso_ucast_qos {
187 __u8 cig;
188 __u8 cis;
189 __u8 sca;
190 __u8 packing;
191 __u8 framing;
192 struct bt_iso_io_qos in;
193 struct bt_iso_io_qos out;
194};
195
196struct bt_iso_bcast_qos {
197 __u8 big;
198 __u8 bis;
199 __u8 sync_factor;
200 __u8 packing;
201 __u8 framing;
202 struct bt_iso_io_qos in;
203 struct bt_iso_io_qos out;
204 __u8 encryption;
205 __u8 bcode[16];
206 __u8 options;
207 __u16 skip;
208 __u16 sync_timeout;
209 __u8 sync_cte_type;
210 __u8 mse;
211 __u16 timeout;
212};
213
214struct bt_iso_qos {
215 union {
216 struct bt_iso_ucast_qos ucast;
217 struct bt_iso_bcast_qos bcast;
218 };
219};
220
221#define BT_ISO_PHY_1M BIT(0)
222#define BT_ISO_PHY_2M BIT(1)
223#define BT_ISO_PHY_CODED BIT(2)
224#define BT_ISO_PHY_ANY (BT_ISO_PHY_1M | BT_ISO_PHY_2M | \
225 BT_ISO_PHY_CODED)
226
227#define BT_CODEC 19
228
229struct bt_codec_caps {
230 __u8 len;
231 __u8 data[];
232} __packed;
233
234struct bt_codec {
235 __u8 id;
236 __u16 cid;
237 __u16 vid;
238 __u8 data_path;
239 __u8 num_caps;
240} __packed;
241
242struct bt_codecs {
243 __u8 num_codecs;
244 struct bt_codec codecs[];
245} __packed;
246
247#define BT_CODEC_CVSD 0x02
248#define BT_CODEC_TRANSPARENT 0x03
249#define BT_CODEC_MSBC 0x05
250
251#define BT_ISO_BASE 20
252
253/* Socket option value 21 reserved */
254
255#define BT_PKT_SEQNUM 22
256
257#define BT_SCM_PKT_SEQNUM 0x05
258
259__printf(1, 2)
260void bt_info(const char *fmt, ...);
261__printf(1, 2)
262void bt_warn(const char *fmt, ...);
263__printf(1, 2)
264void bt_err(const char *fmt, ...);
265#if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG)
266void bt_dbg_set(bool enable);
267bool bt_dbg_get(void);
268__printf(1, 2)
269void bt_dbg(const char *fmt, ...);
270#endif
271__printf(1, 2)
272void bt_warn_ratelimited(const char *fmt, ...);
273__printf(1, 2)
274void bt_err_ratelimited(const char *fmt, ...);
275
276#define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
277#define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__)
278#define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
279
280#if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG)
281#define BT_DBG(fmt, ...) \
282 bt_dbg("%s:%d: " fmt "\n", __func__, __LINE__, ##__VA_ARGS__)
283#else
284#define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
285#endif
286
287#define bt_dev_name(hdev) ((hdev) ? (hdev)->name : "null")
288
289#define bt_dev_info(hdev, fmt, ...) \
290 BT_INFO("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
291#define bt_dev_warn(hdev, fmt, ...) \
292 BT_WARN("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
293#define bt_dev_err(hdev, fmt, ...) \
294 BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
295#define bt_dev_dbg(hdev, fmt, ...) \
296 BT_DBG("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
297
298#define bt_dev_warn_ratelimited(hdev, fmt, ...) \
299 bt_warn_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
300#define bt_dev_err_ratelimited(hdev, fmt, ...) \
301 bt_err_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
302
303/* Connection and socket states */
304enum bt_sock_state {
305 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
306 BT_OPEN,
307 BT_BOUND,
308 BT_LISTEN,
309 BT_CONNECT,
310 BT_CONNECT2,
311 BT_CONFIG,
312 BT_DISCONN,
313 BT_CLOSED
314};
315
316/* If unused will be removed by compiler */
317static inline const char *state_to_string(int state)
318{
319 switch (state) {
320 case BT_CONNECTED:
321 return "BT_CONNECTED";
322 case BT_OPEN:
323 return "BT_OPEN";
324 case BT_BOUND:
325 return "BT_BOUND";
326 case BT_LISTEN:
327 return "BT_LISTEN";
328 case BT_CONNECT:
329 return "BT_CONNECT";
330 case BT_CONNECT2:
331 return "BT_CONNECT2";
332 case BT_CONFIG:
333 return "BT_CONFIG";
334 case BT_DISCONN:
335 return "BT_DISCONN";
336 case BT_CLOSED:
337 return "BT_CLOSED";
338 }
339
340 return "invalid state";
341}
342
343/* BD Address */
344typedef struct {
345 __u8 b[6];
346} __packed bdaddr_t;
347
348/* BD Address type */
349#define BDADDR_BREDR 0x00
350#define BDADDR_LE_PUBLIC 0x01
351#define BDADDR_LE_RANDOM 0x02
352
353static inline bool bdaddr_type_is_valid(u8 type)
354{
355 switch (type) {
356 case BDADDR_BREDR:
357 case BDADDR_LE_PUBLIC:
358 case BDADDR_LE_RANDOM:
359 return true;
360 }
361
362 return false;
363}
364
365static inline bool bdaddr_type_is_le(u8 type)
366{
367 switch (type) {
368 case BDADDR_LE_PUBLIC:
369 case BDADDR_LE_RANDOM:
370 return true;
371 }
372
373 return false;
374}
375
376#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
377#define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
378
379/* Copy, swap, convert BD Address */
380static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2)
381{
382 return memcmp(ba1, ba2, sizeof(bdaddr_t));
383}
384static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src)
385{
386 memcpy(dst, src, sizeof(bdaddr_t));
387}
388
389void baswap(bdaddr_t *dst, const bdaddr_t *src);
390
391/* Common socket structures and functions */
392
393#define bt_sk(__sk) ((struct bt_sock *) __sk)
394
395struct bt_sock {
396 struct sock sk;
397 struct list_head accept_q;
398 spinlock_t accept_q_lock; /* protects accept_q */
399 struct sock *parent;
400 unsigned long flags;
401 void (*skb_msg_name)(struct sk_buff *, void *, int *);
402 void (*skb_put_cmsg)(struct sk_buff *, struct msghdr *, struct sock *);
403};
404
405enum {
406 BT_SK_DEFER_SETUP,
407 BT_SK_SUSPEND,
408 BT_SK_PKT_STATUS,
409 BT_SK_PKT_SEQNUM,
410};
411
412struct bt_sock_list {
413 struct hlist_head head;
414 rwlock_t lock;
415#ifdef CONFIG_PROC_FS
416 int (* custom_seq_show)(struct seq_file *, void *);
417#endif
418};
419
420int bt_sock_register(int proto, const struct net_proto_family *ops);
421void bt_sock_unregister(int proto);
422void bt_sock_link(struct bt_sock_list *l, struct sock *s);
423void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
424bool bt_sock_linked(struct bt_sock_list *l, struct sock *s);
425struct sock *bt_sock_alloc(struct net *net, struct socket *sock,
426 struct proto *prot, int proto, gfp_t prio, int kern);
427int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
428 int flags);
429int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg,
430 size_t len, int flags);
431__poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait);
432int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
433int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
434int bt_sock_wait_ready(struct sock *sk, unsigned int msg_flags);
435
436void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh);
437void bt_accept_unlink(struct sock *sk);
438struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
439
440/* Skb helpers */
441struct l2cap_ctrl {
442 u8 sframe:1,
443 poll:1,
444 final:1,
445 fcs:1,
446 sar:2,
447 super:2;
448
449 u16 reqseq;
450 u16 txseq;
451 u8 retries;
452 __le16 psm;
453 bdaddr_t bdaddr;
454 struct l2cap_chan *chan;
455};
456
457struct hci_dev;
458
459typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
460typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status,
461 u16 opcode, struct sk_buff *skb);
462
463void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status,
464 hci_req_complete_t *req_complete,
465 hci_req_complete_skb_t *req_complete_skb);
466
467int hci_ethtool_ts_info(unsigned int index, int sk_proto,
468 struct kernel_ethtool_ts_info *ts_info);
469
470#define HCI_REQ_START BIT(0)
471#define HCI_REQ_SKB BIT(1)
472
473struct hci_ctrl {
474 struct sock *sk;
475 u16 opcode;
476 u8 req_flags;
477 u8 req_event;
478 union {
479 hci_req_complete_t req_complete;
480 hci_req_complete_skb_t req_complete_skb;
481 };
482};
483
484struct mgmt_ctrl {
485 struct hci_dev *hdev;
486 u16 opcode;
487};
488
489struct bt_skb_cb {
490 u8 pkt_type;
491 u8 force_active;
492 u16 expect;
493 u16 pkt_seqnum;
494 u8 incoming:1;
495 u8 pkt_status:2;
496 union {
497 struct l2cap_ctrl l2cap;
498 struct hci_ctrl hci;
499 struct mgmt_ctrl mgmt;
500 struct scm_creds creds;
501 };
502};
503#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
504
505#define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
506#define hci_skb_pkt_status(skb) bt_cb((skb))->pkt_status
507#define hci_skb_pkt_seqnum(skb) bt_cb((skb))->pkt_seqnum
508#define hci_skb_expect(skb) bt_cb((skb))->expect
509#define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
510#define hci_skb_event(skb) bt_cb((skb))->hci.req_event
511#define hci_skb_sk(skb) bt_cb((skb))->hci.sk
512
513static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
514{
515 struct sk_buff *skb;
516
517 skb = alloc_skb(len + BT_SKB_RESERVE, how);
518 if (skb)
519 skb_reserve(skb, BT_SKB_RESERVE);
520 return skb;
521}
522
523static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
524 unsigned long len, int nb, int *err)
525{
526 struct sk_buff *skb;
527
528 skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
529 if (skb)
530 skb_reserve(skb, BT_SKB_RESERVE);
531
532 if (!skb && *err)
533 return NULL;
534
535 *err = sock_error(sk);
536 if (*err)
537 goto out;
538
539 if (sk->sk_shutdown) {
540 *err = -ECONNRESET;
541 goto out;
542 }
543
544 return skb;
545
546out:
547 kfree_skb(skb);
548 return NULL;
549}
550
551/* Shall not be called with lock_sock held */
552static inline struct sk_buff *bt_skb_sendmsg(struct sock *sk,
553 struct msghdr *msg,
554 size_t len, size_t mtu,
555 size_t headroom, size_t tailroom)
556{
557 struct sk_buff *skb;
558 size_t size = min_t(size_t, len, mtu);
559 int err;
560
561 skb = bt_skb_send_alloc(sk, size + headroom + tailroom,
562 msg->msg_flags & MSG_DONTWAIT, &err);
563 if (!skb)
564 return ERR_PTR(err);
565
566 skb_reserve(skb, headroom);
567 skb_tailroom_reserve(skb, mtu, tailroom);
568
569 if (!copy_from_iter_full(skb_put(skb, size), size, &msg->msg_iter)) {
570 kfree_skb(skb);
571 return ERR_PTR(-EFAULT);
572 }
573
574 skb->priority = READ_ONCE(sk->sk_priority);
575
576 return skb;
577}
578
579/* Similar to bt_skb_sendmsg but can split the msg into multiple fragments
580 * accourding to the MTU.
581 */
582static inline struct sk_buff *bt_skb_sendmmsg(struct sock *sk,
583 struct msghdr *msg,
584 size_t len, size_t mtu,
585 size_t headroom, size_t tailroom)
586{
587 struct sk_buff *skb, **frag;
588
589 skb = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom);
590 if (IS_ERR(skb))
591 return skb;
592
593 len -= skb->len;
594 if (!len)
595 return skb;
596
597 /* Add remaining data over MTU as continuation fragments */
598 frag = &skb_shinfo(skb)->frag_list;
599 while (len) {
600 struct sk_buff *tmp;
601
602 tmp = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom);
603 if (IS_ERR(tmp)) {
604 return skb;
605 }
606
607 len -= tmp->len;
608
609 *frag = tmp;
610 frag = &(*frag)->next;
611 }
612
613 return skb;
614}
615
616int bt_to_errno(u16 code);
617__u8 bt_status(int err);
618
619void hci_sock_set_flag(struct sock *sk, int nr);
620void hci_sock_clear_flag(struct sock *sk, int nr);
621int hci_sock_test_flag(struct sock *sk, int nr);
622unsigned short hci_sock_get_channel(struct sock *sk);
623u32 hci_sock_get_cookie(struct sock *sk);
624
625int hci_sock_init(void);
626void hci_sock_cleanup(void);
627
628int bt_sysfs_init(void);
629void bt_sysfs_cleanup(void);
630
631int bt_procfs_init(struct net *net, const char *name,
632 struct bt_sock_list *sk_list,
633 int (*seq_show)(struct seq_file *, void *));
634void bt_procfs_cleanup(struct net *net, const char *name);
635
636extern struct dentry *bt_debugfs;
637
638int l2cap_init(void);
639void l2cap_exit(void);
640
641#if IS_ENABLED(CONFIG_BT_BREDR)
642int sco_init(void);
643void sco_exit(void);
644#else
645static inline int sco_init(void)
646{
647 return 0;
648}
649
650static inline void sco_exit(void)
651{
652}
653#endif
654
655#if IS_ENABLED(CONFIG_BT_LE)
656int iso_init(void);
657int iso_exit(void);
658bool iso_inited(void);
659#else
660static inline int iso_init(void)
661{
662 return 0;
663}
664
665static inline int iso_exit(void)
666{
667 return 0;
668}
669
670static inline bool iso_inited(void)
671{
672 return false;
673}
674#endif
675
676int mgmt_init(void);
677void mgmt_exit(void);
678void mgmt_cleanup(struct sock *sk);
679
680void bt_sock_reclassify_lock(struct sock *sk, int proto);
681
682#endif /* __BLUETOOTH_H */