xref: /linux/include/net/bluetooth/bluetooth.h (revision fcb3ad4366b9c810cbb9da34c076a9a52d8aa1e0)
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 
127 #define BT_SNDMTU		12
128 #define BT_RCVMTU		13
129 #define BT_PHY			14
130 
131 #define BT_PHY_BR_1M_1SLOT	0x00000001
132 #define BT_PHY_BR_1M_3SLOT	0x00000002
133 #define BT_PHY_BR_1M_5SLOT	0x00000004
134 #define BT_PHY_EDR_2M_1SLOT	0x00000008
135 #define BT_PHY_EDR_2M_3SLOT	0x00000010
136 #define BT_PHY_EDR_2M_5SLOT	0x00000020
137 #define BT_PHY_EDR_3M_1SLOT	0x00000040
138 #define BT_PHY_EDR_3M_3SLOT	0x00000080
139 #define BT_PHY_EDR_3M_5SLOT	0x00000100
140 #define BT_PHY_LE_1M_TX		0x00000200
141 #define BT_PHY_LE_1M_RX		0x00000400
142 #define BT_PHY_LE_2M_TX		0x00000800
143 #define BT_PHY_LE_2M_RX		0x00001000
144 #define BT_PHY_LE_CODED_TX	0x00002000
145 #define BT_PHY_LE_CODED_RX	0x00004000
146 
147 #define BT_MODE			15
148 
149 #define BT_MODE_BASIC		0x00
150 #define BT_MODE_ERTM		0x01
151 #define BT_MODE_STREAMING	0x02
152 #define BT_MODE_LE_FLOWCTL	0x03
153 #define BT_MODE_EXT_FLOWCTL	0x04
154 
155 #define BT_PKT_STATUS           16
156 
157 #define BT_SCM_PKT_STATUS	0x03
158 
159 #define BT_ISO_QOS		17
160 
161 #define BT_ISO_QOS_CIG_UNSET	0xff
162 #define BT_ISO_QOS_CIS_UNSET	0xff
163 
164 #define BT_ISO_QOS_BIG_UNSET	0xff
165 #define BT_ISO_QOS_BIS_UNSET	0xff
166 
167 #define BT_ISO_SYNC_TIMEOUT	0x07d0 /* 20 secs */
168 
169 struct bt_iso_io_qos {
170 	__u32 interval;
171 	__u16 latency;
172 	__u16 sdu;
173 	__u8  phy;
174 	__u8  rtn;
175 };
176 
177 struct bt_iso_ucast_qos {
178 	__u8  cig;
179 	__u8  cis;
180 	__u8  sca;
181 	__u8  packing;
182 	__u8  framing;
183 	struct bt_iso_io_qos in;
184 	struct bt_iso_io_qos out;
185 };
186 
187 struct bt_iso_bcast_qos {
188 	__u8  big;
189 	__u8  bis;
190 	__u8  sync_factor;
191 	__u8  packing;
192 	__u8  framing;
193 	struct bt_iso_io_qos in;
194 	struct bt_iso_io_qos out;
195 	__u8  encryption;
196 	__u8  bcode[16];
197 	__u8  options;
198 	__u16 skip;
199 	__u16 sync_timeout;
200 	__u8  sync_cte_type;
201 	__u8  mse;
202 	__u16 timeout;
203 };
204 
205 struct bt_iso_qos {
206 	union {
207 		struct bt_iso_ucast_qos ucast;
208 		struct bt_iso_bcast_qos bcast;
209 	};
210 };
211 
212 #define BT_ISO_PHY_1M		0x01
213 #define BT_ISO_PHY_2M		0x02
214 #define BT_ISO_PHY_CODED	0x04
215 #define BT_ISO_PHY_ANY		(BT_ISO_PHY_1M | BT_ISO_PHY_2M | \
216 				 BT_ISO_PHY_CODED)
217 
218 #define BT_CODEC	19
219 
220 struct	bt_codec_caps {
221 	__u8	len;
222 	__u8	data[];
223 } __packed;
224 
225 struct bt_codec {
226 	__u8	id;
227 	__u16	cid;
228 	__u16	vid;
229 	__u8	data_path;
230 	__u8	num_caps;
231 } __packed;
232 
233 struct bt_codecs {
234 	__u8		num_codecs;
235 	struct bt_codec	codecs[];
236 } __packed;
237 
238 #define BT_CODEC_CVSD		0x02
239 #define BT_CODEC_TRANSPARENT	0x03
240 #define BT_CODEC_MSBC		0x05
241 
242 #define BT_ISO_BASE		20
243 
244 __printf(1, 2)
245 void bt_info(const char *fmt, ...);
246 __printf(1, 2)
247 void bt_warn(const char *fmt, ...);
248 __printf(1, 2)
249 void bt_err(const char *fmt, ...);
250 #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG)
251 void bt_dbg_set(bool enable);
252 bool bt_dbg_get(void);
253 __printf(1, 2)
254 void bt_dbg(const char *fmt, ...);
255 #endif
256 __printf(1, 2)
257 void bt_warn_ratelimited(const char *fmt, ...);
258 __printf(1, 2)
259 void bt_err_ratelimited(const char *fmt, ...);
260 
261 #define BT_INFO(fmt, ...)	bt_info(fmt "\n", ##__VA_ARGS__)
262 #define BT_WARN(fmt, ...)	bt_warn(fmt "\n", ##__VA_ARGS__)
263 #define BT_ERR(fmt, ...)	bt_err(fmt "\n", ##__VA_ARGS__)
264 
265 #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG)
266 #define BT_DBG(fmt, ...)	bt_dbg(fmt "\n", ##__VA_ARGS__)
267 #else
268 #define BT_DBG(fmt, ...)	pr_debug(fmt "\n", ##__VA_ARGS__)
269 #endif
270 
271 #define bt_dev_name(hdev) ((hdev) ? (hdev)->name : "null")
272 
273 #define bt_dev_info(hdev, fmt, ...)				\
274 	BT_INFO("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
275 #define bt_dev_warn(hdev, fmt, ...)				\
276 	BT_WARN("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
277 #define bt_dev_err(hdev, fmt, ...)				\
278 	BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
279 #define bt_dev_dbg(hdev, fmt, ...)				\
280 	BT_DBG("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
281 
282 #define bt_dev_warn_ratelimited(hdev, fmt, ...)			\
283 	bt_warn_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
284 #define bt_dev_err_ratelimited(hdev, fmt, ...)			\
285 	bt_err_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__)
286 
287 /* Connection and socket states */
288 enum bt_sock_state {
289 	BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
290 	BT_OPEN,
291 	BT_BOUND,
292 	BT_LISTEN,
293 	BT_CONNECT,
294 	BT_CONNECT2,
295 	BT_CONFIG,
296 	BT_DISCONN,
297 	BT_CLOSED
298 };
299 
300 /* If unused will be removed by compiler */
301 static inline const char *state_to_string(int state)
302 {
303 	switch (state) {
304 	case BT_CONNECTED:
305 		return "BT_CONNECTED";
306 	case BT_OPEN:
307 		return "BT_OPEN";
308 	case BT_BOUND:
309 		return "BT_BOUND";
310 	case BT_LISTEN:
311 		return "BT_LISTEN";
312 	case BT_CONNECT:
313 		return "BT_CONNECT";
314 	case BT_CONNECT2:
315 		return "BT_CONNECT2";
316 	case BT_CONFIG:
317 		return "BT_CONFIG";
318 	case BT_DISCONN:
319 		return "BT_DISCONN";
320 	case BT_CLOSED:
321 		return "BT_CLOSED";
322 	}
323 
324 	return "invalid state";
325 }
326 
327 /* BD Address */
328 typedef struct {
329 	__u8 b[6];
330 } __packed bdaddr_t;
331 
332 /* BD Address type */
333 #define BDADDR_BREDR		0x00
334 #define BDADDR_LE_PUBLIC	0x01
335 #define BDADDR_LE_RANDOM	0x02
336 
337 static inline bool bdaddr_type_is_valid(u8 type)
338 {
339 	switch (type) {
340 	case BDADDR_BREDR:
341 	case BDADDR_LE_PUBLIC:
342 	case BDADDR_LE_RANDOM:
343 		return true;
344 	}
345 
346 	return false;
347 }
348 
349 static inline bool bdaddr_type_is_le(u8 type)
350 {
351 	switch (type) {
352 	case BDADDR_LE_PUBLIC:
353 	case BDADDR_LE_RANDOM:
354 		return true;
355 	}
356 
357 	return false;
358 }
359 
360 #define BDADDR_ANY  (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
361 #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
362 
363 /* Copy, swap, convert BD Address */
364 static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2)
365 {
366 	return memcmp(ba1, ba2, sizeof(bdaddr_t));
367 }
368 static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src)
369 {
370 	memcpy(dst, src, sizeof(bdaddr_t));
371 }
372 
373 void baswap(bdaddr_t *dst, const bdaddr_t *src);
374 
375 /* Common socket structures and functions */
376 
377 #define bt_sk(__sk) ((struct bt_sock *) __sk)
378 
379 struct bt_sock {
380 	struct sock sk;
381 	struct list_head accept_q;
382 	struct sock *parent;
383 	unsigned long flags;
384 	void (*skb_msg_name)(struct sk_buff *, void *, int *);
385 	void (*skb_put_cmsg)(struct sk_buff *, struct msghdr *, struct sock *);
386 };
387 
388 enum {
389 	BT_SK_DEFER_SETUP,
390 	BT_SK_SUSPEND,
391 	BT_SK_PKT_STATUS
392 };
393 
394 struct bt_sock_list {
395 	struct hlist_head head;
396 	rwlock_t          lock;
397 #ifdef CONFIG_PROC_FS
398         int (* custom_seq_show)(struct seq_file *, void *);
399 #endif
400 };
401 
402 int  bt_sock_register(int proto, const struct net_proto_family *ops);
403 void bt_sock_unregister(int proto);
404 void bt_sock_link(struct bt_sock_list *l, struct sock *s);
405 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
406 bool bt_sock_linked(struct bt_sock_list *l, struct sock *s);
407 struct sock *bt_sock_alloc(struct net *net, struct socket *sock,
408 			   struct proto *prot, int proto, gfp_t prio, int kern);
409 int  bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
410 		     int flags);
411 int  bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg,
412 			    size_t len, int flags);
413 __poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait);
414 int  bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
415 int  bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
416 int  bt_sock_wait_ready(struct sock *sk, unsigned int msg_flags);
417 
418 void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh);
419 void bt_accept_unlink(struct sock *sk);
420 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
421 
422 /* Skb helpers */
423 struct l2cap_ctrl {
424 	u8	sframe:1,
425 		poll:1,
426 		final:1,
427 		fcs:1,
428 		sar:2,
429 		super:2;
430 
431 	u16	reqseq;
432 	u16	txseq;
433 	u8	retries;
434 	__le16  psm;
435 	bdaddr_t bdaddr;
436 	struct l2cap_chan *chan;
437 };
438 
439 struct hci_dev;
440 
441 typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
442 typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status,
443 				       u16 opcode, struct sk_buff *skb);
444 
445 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status,
446 			  hci_req_complete_t *req_complete,
447 			  hci_req_complete_skb_t *req_complete_skb);
448 
449 #define HCI_REQ_START	BIT(0)
450 #define HCI_REQ_SKB	BIT(1)
451 
452 struct hci_ctrl {
453 	struct sock *sk;
454 	u16 opcode;
455 	u8 req_flags;
456 	u8 req_event;
457 	union {
458 		hci_req_complete_t req_complete;
459 		hci_req_complete_skb_t req_complete_skb;
460 	};
461 };
462 
463 struct mgmt_ctrl {
464 	struct hci_dev *hdev;
465 	u16 opcode;
466 };
467 
468 struct bt_skb_cb {
469 	u8 pkt_type;
470 	u8 force_active;
471 	u16 expect;
472 	u8 incoming:1;
473 	u8 pkt_status:2;
474 	union {
475 		struct l2cap_ctrl l2cap;
476 		struct hci_ctrl hci;
477 		struct mgmt_ctrl mgmt;
478 		struct scm_creds creds;
479 	};
480 };
481 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
482 
483 #define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
484 #define hci_skb_pkt_status(skb) bt_cb((skb))->pkt_status
485 #define hci_skb_expect(skb) bt_cb((skb))->expect
486 #define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
487 #define hci_skb_event(skb) bt_cb((skb))->hci.req_event
488 #define hci_skb_sk(skb) bt_cb((skb))->hci.sk
489 
490 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
491 {
492 	struct sk_buff *skb;
493 
494 	skb = alloc_skb(len + BT_SKB_RESERVE, how);
495 	if (skb)
496 		skb_reserve(skb, BT_SKB_RESERVE);
497 	return skb;
498 }
499 
500 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
501 					unsigned long len, int nb, int *err)
502 {
503 	struct sk_buff *skb;
504 
505 	skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
506 	if (skb)
507 		skb_reserve(skb, BT_SKB_RESERVE);
508 
509 	if (!skb && *err)
510 		return NULL;
511 
512 	*err = sock_error(sk);
513 	if (*err)
514 		goto out;
515 
516 	if (sk->sk_shutdown) {
517 		*err = -ECONNRESET;
518 		goto out;
519 	}
520 
521 	return skb;
522 
523 out:
524 	kfree_skb(skb);
525 	return NULL;
526 }
527 
528 /* Shall not be called with lock_sock held */
529 static inline struct sk_buff *bt_skb_sendmsg(struct sock *sk,
530 					     struct msghdr *msg,
531 					     size_t len, size_t mtu,
532 					     size_t headroom, size_t tailroom)
533 {
534 	struct sk_buff *skb;
535 	size_t size = min_t(size_t, len, mtu);
536 	int err;
537 
538 	skb = bt_skb_send_alloc(sk, size + headroom + tailroom,
539 				msg->msg_flags & MSG_DONTWAIT, &err);
540 	if (!skb)
541 		return ERR_PTR(err);
542 
543 	skb_reserve(skb, headroom);
544 	skb_tailroom_reserve(skb, mtu, tailroom);
545 
546 	if (!copy_from_iter_full(skb_put(skb, size), size, &msg->msg_iter)) {
547 		kfree_skb(skb);
548 		return ERR_PTR(-EFAULT);
549 	}
550 
551 	skb->priority = READ_ONCE(sk->sk_priority);
552 
553 	return skb;
554 }
555 
556 /* Similar to bt_skb_sendmsg but can split the msg into multiple fragments
557  * accourding to the MTU.
558  */
559 static inline struct sk_buff *bt_skb_sendmmsg(struct sock *sk,
560 					      struct msghdr *msg,
561 					      size_t len, size_t mtu,
562 					      size_t headroom, size_t tailroom)
563 {
564 	struct sk_buff *skb, **frag;
565 
566 	skb = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom);
567 	if (IS_ERR(skb))
568 		return skb;
569 
570 	len -= skb->len;
571 	if (!len)
572 		return skb;
573 
574 	/* Add remaining data over MTU as continuation fragments */
575 	frag = &skb_shinfo(skb)->frag_list;
576 	while (len) {
577 		struct sk_buff *tmp;
578 
579 		tmp = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom);
580 		if (IS_ERR(tmp)) {
581 			return skb;
582 		}
583 
584 		len -= tmp->len;
585 
586 		*frag = tmp;
587 		frag = &(*frag)->next;
588 	}
589 
590 	return skb;
591 }
592 
593 static inline int bt_copy_from_sockptr(void *dst, size_t dst_size,
594 				       sockptr_t src, size_t src_size)
595 {
596 	if (dst_size > src_size)
597 		return -EINVAL;
598 
599 	return copy_from_sockptr(dst, src, dst_size);
600 }
601 
602 int bt_to_errno(u16 code);
603 __u8 bt_status(int err);
604 
605 void hci_sock_set_flag(struct sock *sk, int nr);
606 void hci_sock_clear_flag(struct sock *sk, int nr);
607 int hci_sock_test_flag(struct sock *sk, int nr);
608 unsigned short hci_sock_get_channel(struct sock *sk);
609 u32 hci_sock_get_cookie(struct sock *sk);
610 
611 int hci_sock_init(void);
612 void hci_sock_cleanup(void);
613 
614 int bt_sysfs_init(void);
615 void bt_sysfs_cleanup(void);
616 
617 int bt_procfs_init(struct net *net, const char *name,
618 		   struct bt_sock_list *sk_list,
619 		   int (*seq_show)(struct seq_file *, void *));
620 void bt_procfs_cleanup(struct net *net, const char *name);
621 
622 extern struct dentry *bt_debugfs;
623 
624 int l2cap_init(void);
625 void l2cap_exit(void);
626 
627 #if IS_ENABLED(CONFIG_BT_BREDR)
628 int sco_init(void);
629 void sco_exit(void);
630 #else
631 static inline int sco_init(void)
632 {
633 	return 0;
634 }
635 
636 static inline void sco_exit(void)
637 {
638 }
639 #endif
640 
641 #if IS_ENABLED(CONFIG_BT_LE)
642 int iso_init(void);
643 int iso_exit(void);
644 bool iso_enabled(void);
645 #else
646 static inline int iso_init(void)
647 {
648 	return 0;
649 }
650 
651 static inline int iso_exit(void)
652 {
653 	return 0;
654 }
655 
656 static inline bool iso_enabled(void)
657 {
658 	return false;
659 }
660 #endif
661 
662 int mgmt_init(void);
663 void mgmt_exit(void);
664 void mgmt_cleanup(struct sock *sk);
665 
666 void bt_sock_reclassify_lock(struct sock *sk, int proto);
667 
668 #endif /* __BLUETOOTH_H */
669