xref: /linux/include/net/bluetooth/bluetooth.h (revision 1a9239bb4253f9076b5b4b2a1a4e8d7defd77a95)
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