xref: /openbmc/linux/include/net/bluetooth/hci_core.h (revision 11dc486e)
1 /*
2    BlueZ - Bluetooth protocol stack for Linux
3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
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 __HCI_CORE_H
27 #define __HCI_CORE_H
28 
29 #include <linux/idr.h>
30 #include <linux/leds.h>
31 #include <linux/rculist.h>
32 
33 #include <net/bluetooth/hci.h>
34 #include <net/bluetooth/hci_sync.h>
35 #include <net/bluetooth/hci_sock.h>
36 #include <net/bluetooth/coredump.h>
37 
38 /* HCI priority */
39 #define HCI_PRIO_MAX	7
40 
41 /* HCI maximum id value */
42 #define HCI_MAX_ID 10000
43 
44 /* HCI Core structures */
45 struct inquiry_data {
46 	bdaddr_t	bdaddr;
47 	__u8		pscan_rep_mode;
48 	__u8		pscan_period_mode;
49 	__u8		pscan_mode;
50 	__u8		dev_class[3];
51 	__le16		clock_offset;
52 	__s8		rssi;
53 	__u8		ssp_mode;
54 };
55 
56 struct inquiry_entry {
57 	struct list_head	all;		/* inq_cache.all */
58 	struct list_head	list;		/* unknown or resolve */
59 	enum {
60 		NAME_NOT_KNOWN,
61 		NAME_NEEDED,
62 		NAME_PENDING,
63 		NAME_KNOWN,
64 	} name_state;
65 	__u32			timestamp;
66 	struct inquiry_data	data;
67 };
68 
69 struct discovery_state {
70 	int			type;
71 	enum {
72 		DISCOVERY_STOPPED,
73 		DISCOVERY_STARTING,
74 		DISCOVERY_FINDING,
75 		DISCOVERY_RESOLVING,
76 		DISCOVERY_STOPPING,
77 	} state;
78 	struct list_head	all;	/* All devices found during inquiry */
79 	struct list_head	unknown;	/* Name state not known */
80 	struct list_head	resolve;	/* Name needs to be resolved */
81 	__u32			timestamp;
82 	bdaddr_t		last_adv_addr;
83 	u8			last_adv_addr_type;
84 	s8			last_adv_rssi;
85 	u32			last_adv_flags;
86 	u8			last_adv_data[HCI_MAX_EXT_AD_LENGTH];
87 	u8			last_adv_data_len;
88 	bool			report_invalid_rssi;
89 	bool			result_filtering;
90 	bool			limited;
91 	s8			rssi;
92 	u16			uuid_count;
93 	u8			(*uuids)[16];
94 	unsigned long		scan_start;
95 	unsigned long		scan_duration;
96 	unsigned long		name_resolve_timeout;
97 };
98 
99 #define SUSPEND_NOTIFIER_TIMEOUT	msecs_to_jiffies(2000) /* 2 seconds */
100 
101 enum suspend_tasks {
102 	SUSPEND_PAUSE_DISCOVERY,
103 	SUSPEND_UNPAUSE_DISCOVERY,
104 
105 	SUSPEND_PAUSE_ADVERTISING,
106 	SUSPEND_UNPAUSE_ADVERTISING,
107 
108 	SUSPEND_SCAN_DISABLE,
109 	SUSPEND_SCAN_ENABLE,
110 	SUSPEND_DISCONNECTING,
111 
112 	SUSPEND_POWERING_DOWN,
113 
114 	SUSPEND_PREPARE_NOTIFIER,
115 
116 	SUSPEND_SET_ADV_FILTER,
117 	__SUSPEND_NUM_TASKS
118 };
119 
120 enum suspended_state {
121 	BT_RUNNING = 0,
122 	BT_SUSPEND_DISCONNECT,
123 	BT_SUSPEND_CONFIGURE_WAKE,
124 };
125 
126 struct hci_conn_hash {
127 	struct list_head list;
128 	unsigned int     acl_num;
129 	unsigned int     sco_num;
130 	unsigned int     iso_num;
131 	unsigned int     le_num;
132 	unsigned int     le_num_peripheral;
133 };
134 
135 struct bdaddr_list {
136 	struct list_head list;
137 	bdaddr_t bdaddr;
138 	u8 bdaddr_type;
139 };
140 
141 struct codec_list {
142 	struct list_head list;
143 	u8	id;
144 	__u16	cid;
145 	__u16	vid;
146 	u8	transport;
147 	u8	num_caps;
148 	u32	len;
149 	struct hci_codec_caps caps[];
150 };
151 
152 struct bdaddr_list_with_irk {
153 	struct list_head list;
154 	bdaddr_t bdaddr;
155 	u8 bdaddr_type;
156 	u8 peer_irk[16];
157 	u8 local_irk[16];
158 };
159 
160 /* Bitmask of connection flags */
161 enum hci_conn_flags {
162 	HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
163 	HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
164 };
165 typedef u8 hci_conn_flags_t;
166 
167 struct bdaddr_list_with_flags {
168 	struct list_head list;
169 	bdaddr_t bdaddr;
170 	u8 bdaddr_type;
171 	hci_conn_flags_t flags;
172 };
173 
174 struct bt_uuid {
175 	struct list_head list;
176 	u8 uuid[16];
177 	u8 size;
178 	u8 svc_hint;
179 };
180 
181 struct blocked_key {
182 	struct list_head list;
183 	struct rcu_head rcu;
184 	u8 type;
185 	u8 val[16];
186 };
187 
188 struct smp_csrk {
189 	bdaddr_t bdaddr;
190 	u8 bdaddr_type;
191 	u8 type;
192 	u8 val[16];
193 };
194 
195 struct smp_ltk {
196 	struct list_head list;
197 	struct rcu_head rcu;
198 	bdaddr_t bdaddr;
199 	u8 bdaddr_type;
200 	u8 authenticated;
201 	u8 type;
202 	u8 enc_size;
203 	__le16 ediv;
204 	__le64 rand;
205 	u8 val[16];
206 };
207 
208 struct smp_irk {
209 	struct list_head list;
210 	struct rcu_head rcu;
211 	bdaddr_t rpa;
212 	bdaddr_t bdaddr;
213 	u8 addr_type;
214 	u8 val[16];
215 };
216 
217 struct link_key {
218 	struct list_head list;
219 	struct rcu_head rcu;
220 	bdaddr_t bdaddr;
221 	u8 type;
222 	u8 val[HCI_LINK_KEY_SIZE];
223 	u8 pin_len;
224 };
225 
226 struct oob_data {
227 	struct list_head list;
228 	bdaddr_t bdaddr;
229 	u8 bdaddr_type;
230 	u8 present;
231 	u8 hash192[16];
232 	u8 rand192[16];
233 	u8 hash256[16];
234 	u8 rand256[16];
235 };
236 
237 struct adv_info {
238 	struct list_head list;
239 	bool	enabled;
240 	bool	pending;
241 	bool	periodic;
242 	__u8	mesh;
243 	__u8	instance;
244 	__u32	flags;
245 	__u16	timeout;
246 	__u16	remaining_time;
247 	__u16	duration;
248 	__u16	adv_data_len;
249 	__u8	adv_data[HCI_MAX_EXT_AD_LENGTH];
250 	bool	adv_data_changed;
251 	__u16	scan_rsp_len;
252 	__u8	scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
253 	bool	scan_rsp_changed;
254 	__u16	per_adv_data_len;
255 	__u8	per_adv_data[HCI_MAX_PER_AD_LENGTH];
256 	__s8	tx_power;
257 	__u32   min_interval;
258 	__u32   max_interval;
259 	bdaddr_t	random_addr;
260 	bool 		rpa_expired;
261 	struct delayed_work	rpa_expired_cb;
262 };
263 
264 #define HCI_MAX_ADV_INSTANCES		5
265 #define HCI_DEFAULT_ADV_DURATION	2
266 
267 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
268 
269 #define DATA_CMP(_d1, _l1, _d2, _l2) \
270 	(_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
271 
272 #define ADV_DATA_CMP(_adv, _data, _len) \
273 	DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
274 
275 #define SCAN_RSP_CMP(_adv, _data, _len) \
276 	DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
277 
278 struct monitored_device {
279 	struct list_head list;
280 
281 	bdaddr_t bdaddr;
282 	__u8     addr_type;
283 	__u16    handle;
284 	bool     notified;
285 };
286 
287 struct adv_pattern {
288 	struct list_head list;
289 	__u8 ad_type;
290 	__u8 offset;
291 	__u8 length;
292 	__u8 value[HCI_MAX_EXT_AD_LENGTH];
293 };
294 
295 struct adv_rssi_thresholds {
296 	__s8 low_threshold;
297 	__s8 high_threshold;
298 	__u16 low_threshold_timeout;
299 	__u16 high_threshold_timeout;
300 	__u8 sampling_period;
301 };
302 
303 struct adv_monitor {
304 	struct list_head patterns;
305 	struct adv_rssi_thresholds rssi;
306 	__u16		handle;
307 
308 	enum {
309 		ADV_MONITOR_STATE_NOT_REGISTERED,
310 		ADV_MONITOR_STATE_REGISTERED,
311 		ADV_MONITOR_STATE_OFFLOADED
312 	} state;
313 };
314 
315 #define HCI_MIN_ADV_MONITOR_HANDLE		1
316 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES		32
317 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS	16
318 #define HCI_ADV_MONITOR_EXT_NONE		1
319 #define HCI_ADV_MONITOR_EXT_MSFT		2
320 
321 #define HCI_MAX_SHORT_NAME_LENGTH	10
322 
323 #define HCI_CONN_HANDLE_MAX		0x0eff
324 #define HCI_CONN_HANDLE_UNSET(_handle)	(_handle > HCI_CONN_HANDLE_MAX)
325 
326 /* Min encryption key size to match with SMP */
327 #define HCI_MIN_ENC_KEY_SIZE		7
328 
329 /* Default LE RPA expiry time, 15 minutes */
330 #define HCI_DEFAULT_RPA_TIMEOUT		(15 * 60)
331 
332 /* Default min/max age of connection information (1s/3s) */
333 #define DEFAULT_CONN_INFO_MIN_AGE	1000
334 #define DEFAULT_CONN_INFO_MAX_AGE	3000
335 /* Default authenticated payload timeout 30s */
336 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT   0x0bb8
337 
338 #define HCI_MAX_PAGES	3
339 
340 struct hci_dev {
341 	struct list_head list;
342 	struct mutex	lock;
343 
344 	struct ida	unset_handle_ida;
345 
346 	const char	*name;
347 	unsigned long	flags;
348 	__u16		id;
349 	__u8		bus;
350 	bdaddr_t	bdaddr;
351 	bdaddr_t	setup_addr;
352 	bdaddr_t	public_addr;
353 	bdaddr_t	random_addr;
354 	bdaddr_t	static_addr;
355 	__u8		adv_addr_type;
356 	__u8		dev_name[HCI_MAX_NAME_LENGTH];
357 	__u8		short_name[HCI_MAX_SHORT_NAME_LENGTH];
358 	__u8		eir[HCI_MAX_EIR_LENGTH];
359 	__u16		appearance;
360 	__u8		dev_class[3];
361 	__u8		major_class;
362 	__u8		minor_class;
363 	__u8		max_page;
364 	__u8		features[HCI_MAX_PAGES][8];
365 	__u8		le_features[8];
366 	__u8		le_accept_list_size;
367 	__u8		le_resolv_list_size;
368 	__u8		le_num_of_adv_sets;
369 	__u8		le_states[8];
370 	__u8		mesh_ad_types[16];
371 	__u8		mesh_send_ref;
372 	__u8		commands[64];
373 	__u8		hci_ver;
374 	__u16		hci_rev;
375 	__u8		lmp_ver;
376 	__u16		manufacturer;
377 	__u16		lmp_subver;
378 	__u16		voice_setting;
379 	__u8		num_iac;
380 	__u16		stored_max_keys;
381 	__u16		stored_num_keys;
382 	__u8		io_capability;
383 	__s8		inq_tx_power;
384 	__u8		err_data_reporting;
385 	__u16		page_scan_interval;
386 	__u16		page_scan_window;
387 	__u8		page_scan_type;
388 	__u8		le_adv_channel_map;
389 	__u16		le_adv_min_interval;
390 	__u16		le_adv_max_interval;
391 	__u8		le_scan_type;
392 	__u16		le_scan_interval;
393 	__u16		le_scan_window;
394 	__u16		le_scan_int_suspend;
395 	__u16		le_scan_window_suspend;
396 	__u16		le_scan_int_discovery;
397 	__u16		le_scan_window_discovery;
398 	__u16		le_scan_int_adv_monitor;
399 	__u16		le_scan_window_adv_monitor;
400 	__u16		le_scan_int_connect;
401 	__u16		le_scan_window_connect;
402 	__u16		le_conn_min_interval;
403 	__u16		le_conn_max_interval;
404 	__u16		le_conn_latency;
405 	__u16		le_supv_timeout;
406 	__u16		le_def_tx_len;
407 	__u16		le_def_tx_time;
408 	__u16		le_max_tx_len;
409 	__u16		le_max_tx_time;
410 	__u16		le_max_rx_len;
411 	__u16		le_max_rx_time;
412 	__u8		le_max_key_size;
413 	__u8		le_min_key_size;
414 	__u16		discov_interleaved_timeout;
415 	__u16		conn_info_min_age;
416 	__u16		conn_info_max_age;
417 	__u16		auth_payload_timeout;
418 	__u8		min_enc_key_size;
419 	__u8		max_enc_key_size;
420 	__u8		pairing_opts;
421 	__u8		ssp_debug_mode;
422 	__u8		hw_error_code;
423 	__u32		clock;
424 	__u16		advmon_allowlist_duration;
425 	__u16		advmon_no_filter_duration;
426 	__u8		enable_advmon_interleave_scan;
427 
428 	__u16		devid_source;
429 	__u16		devid_vendor;
430 	__u16		devid_product;
431 	__u16		devid_version;
432 
433 	__u8		def_page_scan_type;
434 	__u16		def_page_scan_int;
435 	__u16		def_page_scan_window;
436 	__u8		def_inq_scan_type;
437 	__u16		def_inq_scan_int;
438 	__u16		def_inq_scan_window;
439 	__u16		def_br_lsto;
440 	__u16		def_page_timeout;
441 	__u16		def_multi_adv_rotation_duration;
442 	__u16		def_le_autoconnect_timeout;
443 	__s8		min_le_tx_power;
444 	__s8		max_le_tx_power;
445 
446 	__u16		pkt_type;
447 	__u16		esco_type;
448 	__u16		link_policy;
449 	__u16		link_mode;
450 
451 	__u32		idle_timeout;
452 	__u16		sniff_min_interval;
453 	__u16		sniff_max_interval;
454 
455 	unsigned int	auto_accept_delay;
456 
457 	unsigned long	quirks;
458 
459 	atomic_t	cmd_cnt;
460 	unsigned int	acl_cnt;
461 	unsigned int	sco_cnt;
462 	unsigned int	le_cnt;
463 	unsigned int	iso_cnt;
464 
465 	unsigned int	acl_mtu;
466 	unsigned int	sco_mtu;
467 	unsigned int	le_mtu;
468 	unsigned int	iso_mtu;
469 	unsigned int	acl_pkts;
470 	unsigned int	sco_pkts;
471 	unsigned int	le_pkts;
472 	unsigned int	iso_pkts;
473 
474 	unsigned long	acl_last_tx;
475 	unsigned long	sco_last_tx;
476 	unsigned long	le_last_tx;
477 
478 	__u8		le_tx_def_phys;
479 	__u8		le_rx_def_phys;
480 
481 	struct workqueue_struct	*workqueue;
482 	struct workqueue_struct	*req_workqueue;
483 
484 	struct work_struct	power_on;
485 	struct delayed_work	power_off;
486 	struct work_struct	error_reset;
487 	struct work_struct	cmd_sync_work;
488 	struct list_head	cmd_sync_work_list;
489 	struct mutex		cmd_sync_work_lock;
490 	struct mutex		unregister_lock;
491 	struct work_struct	cmd_sync_cancel_work;
492 	struct work_struct	reenable_adv_work;
493 
494 	__u16			discov_timeout;
495 	struct delayed_work	discov_off;
496 
497 	struct delayed_work	service_cache;
498 
499 	struct delayed_work	cmd_timer;
500 	struct delayed_work	ncmd_timer;
501 
502 	struct work_struct	rx_work;
503 	struct work_struct	cmd_work;
504 	struct work_struct	tx_work;
505 
506 	struct delayed_work	le_scan_disable;
507 	struct delayed_work	le_scan_restart;
508 
509 	struct sk_buff_head	rx_q;
510 	struct sk_buff_head	raw_q;
511 	struct sk_buff_head	cmd_q;
512 
513 	struct sk_buff		*sent_cmd;
514 	struct sk_buff		*recv_event;
515 
516 	struct mutex		req_lock;
517 	wait_queue_head_t	req_wait_q;
518 	__u32			req_status;
519 	__u32			req_result;
520 	struct sk_buff		*req_skb;
521 	struct sk_buff		*req_rsp;
522 
523 	void			*smp_data;
524 	void			*smp_bredr_data;
525 
526 	struct discovery_state	discovery;
527 
528 	int			discovery_old_state;
529 	bool			discovery_paused;
530 	int			advertising_old_state;
531 	bool			advertising_paused;
532 
533 	struct notifier_block	suspend_notifier;
534 	enum suspended_state	suspend_state_next;
535 	enum suspended_state	suspend_state;
536 	bool			scanning_paused;
537 	bool			suspended;
538 	u8			wake_reason;
539 	bdaddr_t		wake_addr;
540 	u8			wake_addr_type;
541 
542 	struct hci_conn_hash	conn_hash;
543 
544 	struct list_head	mesh_pending;
545 	struct list_head	mgmt_pending;
546 	struct list_head	reject_list;
547 	struct list_head	accept_list;
548 	struct list_head	uuids;
549 	struct list_head	link_keys;
550 	struct list_head	long_term_keys;
551 	struct list_head	identity_resolving_keys;
552 	struct list_head	remote_oob_data;
553 	struct list_head	le_accept_list;
554 	struct list_head	le_resolv_list;
555 	struct list_head	le_conn_params;
556 	struct list_head	pend_le_conns;
557 	struct list_head	pend_le_reports;
558 	struct list_head	blocked_keys;
559 	struct list_head	local_codecs;
560 
561 	struct hci_dev_stats	stat;
562 
563 	atomic_t		promisc;
564 
565 	const char		*hw_info;
566 	const char		*fw_info;
567 	struct dentry		*debugfs;
568 
569 	struct hci_devcoredump	dump;
570 
571 	struct device		dev;
572 
573 	struct rfkill		*rfkill;
574 
575 	DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
576 	hci_conn_flags_t	conn_flags;
577 
578 	__s8			adv_tx_power;
579 	__u8			adv_data[HCI_MAX_EXT_AD_LENGTH];
580 	__u8			adv_data_len;
581 	__u8			scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
582 	__u8			scan_rsp_data_len;
583 	__u8			per_adv_data[HCI_MAX_PER_AD_LENGTH];
584 	__u8			per_adv_data_len;
585 
586 	struct list_head	adv_instances;
587 	unsigned int		adv_instance_cnt;
588 	__u8			cur_adv_instance;
589 	__u16			adv_instance_timeout;
590 	struct delayed_work	adv_instance_expire;
591 
592 	struct idr		adv_monitors_idr;
593 	unsigned int		adv_monitors_cnt;
594 
595 	__u8			irk[16];
596 	__u32			rpa_timeout;
597 	struct delayed_work	rpa_expired;
598 	bdaddr_t		rpa;
599 
600 	struct delayed_work	mesh_send_done;
601 
602 	enum {
603 		INTERLEAVE_SCAN_NONE,
604 		INTERLEAVE_SCAN_NO_FILTER,
605 		INTERLEAVE_SCAN_ALLOWLIST
606 	} interleave_scan_state;
607 
608 	struct delayed_work	interleave_scan;
609 
610 	struct list_head	monitored_devices;
611 	bool			advmon_pend_notify;
612 
613 #if IS_ENABLED(CONFIG_BT_LEDS)
614 	struct led_trigger	*power_led;
615 #endif
616 
617 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
618 	__u16			msft_opcode;
619 	void			*msft_data;
620 	bool			msft_curve_validity;
621 #endif
622 
623 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
624 	bool			aosp_capable;
625 	bool			aosp_quality_report;
626 #endif
627 
628 	int (*open)(struct hci_dev *hdev);
629 	int (*close)(struct hci_dev *hdev);
630 	int (*flush)(struct hci_dev *hdev);
631 	int (*setup)(struct hci_dev *hdev);
632 	int (*shutdown)(struct hci_dev *hdev);
633 	int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
634 	void (*notify)(struct hci_dev *hdev, unsigned int evt);
635 	void (*hw_error)(struct hci_dev *hdev, u8 code);
636 	int (*post_init)(struct hci_dev *hdev);
637 	int (*set_diag)(struct hci_dev *hdev, bool enable);
638 	int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
639 	void (*cmd_timeout)(struct hci_dev *hdev);
640 	void (*reset)(struct hci_dev *hdev);
641 	bool (*wakeup)(struct hci_dev *hdev);
642 	int (*set_quality_report)(struct hci_dev *hdev, bool enable);
643 	int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
644 	int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
645 				     struct bt_codec *codec, __u8 *vnd_len,
646 				     __u8 **vnd_data);
647 };
648 
649 #define HCI_PHY_HANDLE(handle)	(handle & 0xff)
650 
651 enum conn_reasons {
652 	CONN_REASON_PAIR_DEVICE,
653 	CONN_REASON_L2CAP_CHAN,
654 	CONN_REASON_SCO_CONNECT,
655 	CONN_REASON_ISO_CONNECT,
656 };
657 
658 struct hci_conn {
659 	struct list_head list;
660 
661 	atomic_t	refcnt;
662 
663 	bdaddr_t	dst;
664 	__u8		dst_type;
665 	bdaddr_t	src;
666 	__u8		src_type;
667 	bdaddr_t	init_addr;
668 	__u8		init_addr_type;
669 	bdaddr_t	resp_addr;
670 	__u8		resp_addr_type;
671 	__u8		adv_instance;
672 	__u16		handle;
673 	__u16		sync_handle;
674 	__u16		state;
675 	__u16		mtu;
676 	__u8		mode;
677 	__u8		type;
678 	__u8		role;
679 	bool		out;
680 	__u8		attempt;
681 	__u8		dev_class[3];
682 	__u8		features[HCI_MAX_PAGES][8];
683 	__u16		pkt_type;
684 	__u16		link_policy;
685 	__u8		key_type;
686 	__u8		auth_type;
687 	__u8		sec_level;
688 	__u8		pending_sec_level;
689 	__u8		pin_length;
690 	__u8		enc_key_size;
691 	__u8		io_capability;
692 	__u32		passkey_notify;
693 	__u8		passkey_entered;
694 	__u16		disc_timeout;
695 	__u16		conn_timeout;
696 	__u16		setting;
697 	__u16		auth_payload_timeout;
698 	__u16		le_conn_min_interval;
699 	__u16		le_conn_max_interval;
700 	__u16		le_conn_interval;
701 	__u16		le_conn_latency;
702 	__u16		le_supv_timeout;
703 	__u8		le_adv_data[HCI_MAX_EXT_AD_LENGTH];
704 	__u8		le_adv_data_len;
705 	__u8		le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
706 	__u8		le_per_adv_data_len;
707 	__u8		le_tx_phy;
708 	__u8		le_rx_phy;
709 	__s8		rssi;
710 	__s8		tx_power;
711 	__s8		max_tx_power;
712 	struct bt_iso_qos iso_qos;
713 	unsigned long	flags;
714 
715 	enum conn_reasons conn_reason;
716 	__u8		abort_reason;
717 
718 	__u32		clock;
719 	__u16		clock_accuracy;
720 
721 	unsigned long	conn_info_timestamp;
722 
723 	__u8		remote_cap;
724 	__u8		remote_auth;
725 	__u8		remote_id;
726 
727 	unsigned int	sent;
728 
729 	struct sk_buff_head data_q;
730 	struct list_head chan_list;
731 
732 	struct delayed_work disc_work;
733 	struct delayed_work auto_accept_work;
734 	struct delayed_work idle_work;
735 	struct delayed_work le_conn_timeout;
736 
737 	struct device	dev;
738 	struct dentry	*debugfs;
739 
740 	struct hci_dev	*hdev;
741 	void		*l2cap_data;
742 	void		*sco_data;
743 	void		*iso_data;
744 
745 	struct list_head link_list;
746 	struct hci_conn	*parent;
747 	struct hci_link *link;
748 
749 	struct bt_codec codec;
750 
751 	void (*connect_cfm_cb)	(struct hci_conn *conn, u8 status);
752 	void (*security_cfm_cb)	(struct hci_conn *conn, u8 status);
753 	void (*disconn_cfm_cb)	(struct hci_conn *conn, u8 reason);
754 
755 	void (*cleanup)(struct hci_conn *conn);
756 };
757 
758 struct hci_link {
759 	struct list_head list;
760 	struct hci_conn *conn;
761 };
762 
763 struct hci_chan {
764 	struct list_head list;
765 	__u16 handle;
766 	struct hci_conn *conn;
767 	struct sk_buff_head data_q;
768 	unsigned int	sent;
769 	__u8		state;
770 };
771 
772 struct hci_conn_params {
773 	struct list_head list;
774 	struct list_head action;
775 
776 	bdaddr_t addr;
777 	u8 addr_type;
778 
779 	u16 conn_min_interval;
780 	u16 conn_max_interval;
781 	u16 conn_latency;
782 	u16 supervision_timeout;
783 
784 	enum {
785 		HCI_AUTO_CONN_DISABLED,
786 		HCI_AUTO_CONN_REPORT,
787 		HCI_AUTO_CONN_DIRECT,
788 		HCI_AUTO_CONN_ALWAYS,
789 		HCI_AUTO_CONN_LINK_LOSS,
790 		HCI_AUTO_CONN_EXPLICIT,
791 	} auto_connect;
792 
793 	struct hci_conn *conn;
794 	bool explicit_connect;
795 	/* Accessed without hdev->lock: */
796 	hci_conn_flags_t flags;
797 	u8  privacy_mode;
798 };
799 
800 extern struct list_head hci_dev_list;
801 extern struct list_head hci_cb_list;
802 extern rwlock_t hci_dev_list_lock;
803 extern struct mutex hci_cb_list_lock;
804 
805 #define hci_dev_set_flag(hdev, nr)             set_bit((nr), (hdev)->dev_flags)
806 #define hci_dev_clear_flag(hdev, nr)           clear_bit((nr), (hdev)->dev_flags)
807 #define hci_dev_change_flag(hdev, nr)          change_bit((nr), (hdev)->dev_flags)
808 #define hci_dev_test_flag(hdev, nr)            test_bit((nr), (hdev)->dev_flags)
809 #define hci_dev_test_and_set_flag(hdev, nr)    test_and_set_bit((nr), (hdev)->dev_flags)
810 #define hci_dev_test_and_clear_flag(hdev, nr)  test_and_clear_bit((nr), (hdev)->dev_flags)
811 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
812 
813 #define hci_dev_clear_volatile_flags(hdev)			\
814 	do {							\
815 		hci_dev_clear_flag(hdev, HCI_LE_SCAN);		\
816 		hci_dev_clear_flag(hdev, HCI_LE_ADV);		\
817 		hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
818 		hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);	\
819 		hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT);	\
820 	} while (0)
821 
822 #define hci_dev_le_state_simultaneous(hdev) \
823 	(test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
824 	 (hdev->le_states[4] & 0x08) &&	/* Central */ \
825 	 (hdev->le_states[4] & 0x40) &&	/* Peripheral */ \
826 	 (hdev->le_states[3] & 0x10))	/* Simultaneous */
827 
828 /* ----- HCI interface to upper protocols ----- */
829 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
830 int l2cap_disconn_ind(struct hci_conn *hcon);
831 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
832 
833 #if IS_ENABLED(CONFIG_BT_BREDR)
834 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
835 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
836 #else
sco_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)837 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
838 				  __u8 *flags)
839 {
840 	return 0;
841 }
842 
sco_recv_scodata(struct hci_conn * hcon,struct sk_buff * skb)843 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
844 {
845 }
846 #endif
847 
848 #if IS_ENABLED(CONFIG_BT_LE)
849 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
850 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
851 #else
iso_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)852 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
853 				  __u8 *flags)
854 {
855 	return 0;
856 }
iso_recv(struct hci_conn * hcon,struct sk_buff * skb,u16 flags)857 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
858 			    u16 flags)
859 {
860 }
861 #endif
862 
863 /* ----- Inquiry cache ----- */
864 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
865 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
866 
discovery_init(struct hci_dev * hdev)867 static inline void discovery_init(struct hci_dev *hdev)
868 {
869 	hdev->discovery.state = DISCOVERY_STOPPED;
870 	INIT_LIST_HEAD(&hdev->discovery.all);
871 	INIT_LIST_HEAD(&hdev->discovery.unknown);
872 	INIT_LIST_HEAD(&hdev->discovery.resolve);
873 	hdev->discovery.report_invalid_rssi = true;
874 	hdev->discovery.rssi = HCI_RSSI_INVALID;
875 }
876 
hci_discovery_filter_clear(struct hci_dev * hdev)877 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
878 {
879 	hdev->discovery.result_filtering = false;
880 	hdev->discovery.report_invalid_rssi = true;
881 	hdev->discovery.rssi = HCI_RSSI_INVALID;
882 	hdev->discovery.uuid_count = 0;
883 	kfree(hdev->discovery.uuids);
884 	hdev->discovery.uuids = NULL;
885 	hdev->discovery.scan_start = 0;
886 	hdev->discovery.scan_duration = 0;
887 }
888 
889 bool hci_discovery_active(struct hci_dev *hdev);
890 
891 void hci_discovery_set_state(struct hci_dev *hdev, int state);
892 
inquiry_cache_empty(struct hci_dev * hdev)893 static inline int inquiry_cache_empty(struct hci_dev *hdev)
894 {
895 	return list_empty(&hdev->discovery.all);
896 }
897 
inquiry_cache_age(struct hci_dev * hdev)898 static inline long inquiry_cache_age(struct hci_dev *hdev)
899 {
900 	struct discovery_state *c = &hdev->discovery;
901 	return jiffies - c->timestamp;
902 }
903 
inquiry_entry_age(struct inquiry_entry * e)904 static inline long inquiry_entry_age(struct inquiry_entry *e)
905 {
906 	return jiffies - e->timestamp;
907 }
908 
909 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
910 					       bdaddr_t *bdaddr);
911 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
912 						       bdaddr_t *bdaddr);
913 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
914 						       bdaddr_t *bdaddr,
915 						       int state);
916 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
917 				      struct inquiry_entry *ie);
918 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
919 			     bool name_known);
920 void hci_inquiry_cache_flush(struct hci_dev *hdev);
921 
922 /* ----- HCI Connections ----- */
923 enum {
924 	HCI_CONN_AUTH_PEND,
925 	HCI_CONN_ENCRYPT_PEND,
926 	HCI_CONN_RSWITCH_PEND,
927 	HCI_CONN_MODE_CHANGE_PEND,
928 	HCI_CONN_SCO_SETUP_PEND,
929 	HCI_CONN_MGMT_CONNECTED,
930 	HCI_CONN_SSP_ENABLED,
931 	HCI_CONN_SC_ENABLED,
932 	HCI_CONN_AES_CCM,
933 	HCI_CONN_POWER_SAVE,
934 	HCI_CONN_FLUSH_KEY,
935 	HCI_CONN_ENCRYPT,
936 	HCI_CONN_AUTH,
937 	HCI_CONN_SECURE,
938 	HCI_CONN_FIPS,
939 	HCI_CONN_STK_ENCRYPT,
940 	HCI_CONN_AUTH_INITIATOR,
941 	HCI_CONN_DROP,
942 	HCI_CONN_CANCEL,
943 	HCI_CONN_PARAM_REMOVAL_PEND,
944 	HCI_CONN_NEW_LINK_KEY,
945 	HCI_CONN_SCANNING,
946 	HCI_CONN_AUTH_FAILURE,
947 	HCI_CONN_PER_ADV,
948 	HCI_CONN_BIG_CREATED,
949 	HCI_CONN_CREATE_CIS,
950 	HCI_CONN_BIG_SYNC,
951 	HCI_CONN_BIG_SYNC_FAILED,
952 	HCI_CONN_PA_SYNC,
953 	HCI_CONN_PA_SYNC_FAILED,
954 };
955 
hci_conn_ssp_enabled(struct hci_conn * conn)956 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
957 {
958 	struct hci_dev *hdev = conn->hdev;
959 	return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
960 	       test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
961 }
962 
hci_conn_sc_enabled(struct hci_conn * conn)963 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
964 {
965 	struct hci_dev *hdev = conn->hdev;
966 	return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
967 	       test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
968 }
969 
hci_conn_hash_add(struct hci_dev * hdev,struct hci_conn * c)970 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
971 {
972 	struct hci_conn_hash *h = &hdev->conn_hash;
973 	list_add_tail_rcu(&c->list, &h->list);
974 	switch (c->type) {
975 	case ACL_LINK:
976 		h->acl_num++;
977 		break;
978 	case LE_LINK:
979 		h->le_num++;
980 		if (c->role == HCI_ROLE_SLAVE)
981 			h->le_num_peripheral++;
982 		break;
983 	case SCO_LINK:
984 	case ESCO_LINK:
985 		h->sco_num++;
986 		break;
987 	case ISO_LINK:
988 		h->iso_num++;
989 		break;
990 	}
991 }
992 
hci_conn_hash_del(struct hci_dev * hdev,struct hci_conn * c)993 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
994 {
995 	struct hci_conn_hash *h = &hdev->conn_hash;
996 
997 	list_del_rcu(&c->list);
998 	synchronize_rcu();
999 
1000 	switch (c->type) {
1001 	case ACL_LINK:
1002 		h->acl_num--;
1003 		break;
1004 	case LE_LINK:
1005 		h->le_num--;
1006 		if (c->role == HCI_ROLE_SLAVE)
1007 			h->le_num_peripheral--;
1008 		break;
1009 	case SCO_LINK:
1010 	case ESCO_LINK:
1011 		h->sco_num--;
1012 		break;
1013 	case ISO_LINK:
1014 		h->iso_num--;
1015 		break;
1016 	}
1017 }
1018 
hci_conn_num(struct hci_dev * hdev,__u8 type)1019 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1020 {
1021 	struct hci_conn_hash *h = &hdev->conn_hash;
1022 	switch (type) {
1023 	case ACL_LINK:
1024 		return h->acl_num;
1025 	case LE_LINK:
1026 		return h->le_num;
1027 	case SCO_LINK:
1028 	case ESCO_LINK:
1029 		return h->sco_num;
1030 	case ISO_LINK:
1031 		return h->iso_num;
1032 	default:
1033 		return 0;
1034 	}
1035 }
1036 
hci_conn_count(struct hci_dev * hdev)1037 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1038 {
1039 	struct hci_conn_hash *c = &hdev->conn_hash;
1040 
1041 	return c->acl_num + c->sco_num + c->le_num + c->iso_num;
1042 }
1043 
hci_conn_valid(struct hci_dev * hdev,struct hci_conn * conn)1044 static inline bool hci_conn_valid(struct hci_dev *hdev, struct hci_conn *conn)
1045 {
1046 	struct hci_conn_hash *h = &hdev->conn_hash;
1047 	struct hci_conn  *c;
1048 
1049 	rcu_read_lock();
1050 
1051 	list_for_each_entry_rcu(c, &h->list, list) {
1052 		if (c == conn) {
1053 			rcu_read_unlock();
1054 			return true;
1055 		}
1056 	}
1057 	rcu_read_unlock();
1058 
1059 	return false;
1060 }
1061 
hci_conn_lookup_type(struct hci_dev * hdev,__u16 handle)1062 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1063 {
1064 	struct hci_conn_hash *h = &hdev->conn_hash;
1065 	struct hci_conn *c;
1066 	__u8 type = INVALID_LINK;
1067 
1068 	rcu_read_lock();
1069 
1070 	list_for_each_entry_rcu(c, &h->list, list) {
1071 		if (c->handle == handle) {
1072 			type = c->type;
1073 			break;
1074 		}
1075 	}
1076 
1077 	rcu_read_unlock();
1078 
1079 	return type;
1080 }
1081 
hci_conn_hash_lookup_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 bis)1082 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1083 							bdaddr_t *ba, __u8 bis)
1084 {
1085 	struct hci_conn_hash *h = &hdev->conn_hash;
1086 	struct hci_conn  *c;
1087 
1088 	rcu_read_lock();
1089 
1090 	list_for_each_entry_rcu(c, &h->list, list) {
1091 		if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1092 			continue;
1093 
1094 		if (c->iso_qos.bcast.bis == bis) {
1095 			rcu_read_unlock();
1096 			return c;
1097 		}
1098 	}
1099 	rcu_read_unlock();
1100 
1101 	return NULL;
1102 }
1103 
1104 static inline struct hci_conn *
hci_conn_hash_lookup_per_adv_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 big,__u8 bis)1105 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev,
1106 				 bdaddr_t *ba,
1107 				 __u8 big, __u8 bis)
1108 {
1109 	struct hci_conn_hash *h = &hdev->conn_hash;
1110 	struct hci_conn  *c;
1111 
1112 	rcu_read_lock();
1113 
1114 	list_for_each_entry_rcu(c, &h->list, list) {
1115 		if (bacmp(&c->dst, ba) || c->type != ISO_LINK ||
1116 			!test_bit(HCI_CONN_PER_ADV, &c->flags))
1117 			continue;
1118 
1119 		if (c->iso_qos.bcast.big == big &&
1120 		    c->iso_qos.bcast.bis == bis) {
1121 			rcu_read_unlock();
1122 			return c;
1123 		}
1124 	}
1125 	rcu_read_unlock();
1126 
1127 	return NULL;
1128 }
1129 
hci_conn_hash_lookup_handle(struct hci_dev * hdev,__u16 handle)1130 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1131 								__u16 handle)
1132 {
1133 	struct hci_conn_hash *h = &hdev->conn_hash;
1134 	struct hci_conn  *c;
1135 
1136 	rcu_read_lock();
1137 
1138 	list_for_each_entry_rcu(c, &h->list, list) {
1139 		if (c->handle == handle) {
1140 			rcu_read_unlock();
1141 			return c;
1142 		}
1143 	}
1144 	rcu_read_unlock();
1145 
1146 	return NULL;
1147 }
1148 
hci_conn_hash_lookup_ba(struct hci_dev * hdev,__u8 type,bdaddr_t * ba)1149 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1150 							__u8 type, bdaddr_t *ba)
1151 {
1152 	struct hci_conn_hash *h = &hdev->conn_hash;
1153 	struct hci_conn  *c;
1154 
1155 	rcu_read_lock();
1156 
1157 	list_for_each_entry_rcu(c, &h->list, list) {
1158 		if (c->type == type && !bacmp(&c->dst, ba)) {
1159 			rcu_read_unlock();
1160 			return c;
1161 		}
1162 	}
1163 
1164 	rcu_read_unlock();
1165 
1166 	return NULL;
1167 }
1168 
hci_conn_hash_lookup_le(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type)1169 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1170 						       bdaddr_t *ba,
1171 						       __u8 ba_type)
1172 {
1173 	struct hci_conn_hash *h = &hdev->conn_hash;
1174 	struct hci_conn  *c;
1175 
1176 	rcu_read_lock();
1177 
1178 	list_for_each_entry_rcu(c, &h->list, list) {
1179 		if (c->type != LE_LINK)
1180 		       continue;
1181 
1182 		if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1183 			rcu_read_unlock();
1184 			return c;
1185 		}
1186 	}
1187 
1188 	rcu_read_unlock();
1189 
1190 	return NULL;
1191 }
1192 
hci_conn_hash_lookup_cis(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type,__u8 cig,__u8 id)1193 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1194 							bdaddr_t *ba,
1195 							__u8 ba_type,
1196 							__u8 cig,
1197 							__u8 id)
1198 {
1199 	struct hci_conn_hash *h = &hdev->conn_hash;
1200 	struct hci_conn  *c;
1201 
1202 	rcu_read_lock();
1203 
1204 	list_for_each_entry_rcu(c, &h->list, list) {
1205 		if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1206 			continue;
1207 
1208 		/* Match CIG ID if set */
1209 		if (cig != c->iso_qos.ucast.cig)
1210 			continue;
1211 
1212 		/* Match CIS ID if set */
1213 		if (id != c->iso_qos.ucast.cis)
1214 			continue;
1215 
1216 		/* Match destination address if set */
1217 		if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) {
1218 			rcu_read_unlock();
1219 			return c;
1220 		}
1221 	}
1222 
1223 	rcu_read_unlock();
1224 
1225 	return NULL;
1226 }
1227 
hci_conn_hash_lookup_cig(struct hci_dev * hdev,__u8 handle)1228 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1229 							__u8 handle)
1230 {
1231 	struct hci_conn_hash *h = &hdev->conn_hash;
1232 	struct hci_conn  *c;
1233 
1234 	rcu_read_lock();
1235 
1236 	list_for_each_entry_rcu(c, &h->list, list) {
1237 		if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1238 			continue;
1239 
1240 		if (handle == c->iso_qos.ucast.cig) {
1241 			rcu_read_unlock();
1242 			return c;
1243 		}
1244 	}
1245 
1246 	rcu_read_unlock();
1247 
1248 	return NULL;
1249 }
1250 
hci_conn_hash_lookup_big(struct hci_dev * hdev,__u8 handle)1251 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1252 							__u8 handle)
1253 {
1254 	struct hci_conn_hash *h = &hdev->conn_hash;
1255 	struct hci_conn  *c;
1256 
1257 	rcu_read_lock();
1258 
1259 	list_for_each_entry_rcu(c, &h->list, list) {
1260 		if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1261 			continue;
1262 
1263 		if (handle == c->iso_qos.bcast.big) {
1264 			rcu_read_unlock();
1265 			return c;
1266 		}
1267 	}
1268 
1269 	rcu_read_unlock();
1270 
1271 	return NULL;
1272 }
1273 
hci_conn_hash_lookup_big_any_dst(struct hci_dev * hdev,__u8 handle)1274 static inline struct hci_conn *hci_conn_hash_lookup_big_any_dst(struct hci_dev *hdev,
1275 							__u8 handle)
1276 {
1277 	struct hci_conn_hash *h = &hdev->conn_hash;
1278 	struct hci_conn  *c;
1279 
1280 	rcu_read_lock();
1281 
1282 	list_for_each_entry_rcu(c, &h->list, list) {
1283 		if (c->type != ISO_LINK)
1284 			continue;
1285 
1286 		if (handle != BT_ISO_QOS_BIG_UNSET && handle == c->iso_qos.bcast.big) {
1287 			rcu_read_unlock();
1288 			return c;
1289 		}
1290 	}
1291 
1292 	rcu_read_unlock();
1293 
1294 	return NULL;
1295 }
1296 
1297 static inline struct hci_conn *
hci_conn_hash_lookup_big_state(struct hci_dev * hdev,__u8 handle,__u16 state)1298 hci_conn_hash_lookup_big_state(struct hci_dev *hdev, __u8 handle,  __u16 state)
1299 {
1300 	struct hci_conn_hash *h = &hdev->conn_hash;
1301 	struct hci_conn  *c;
1302 
1303 	rcu_read_lock();
1304 
1305 	list_for_each_entry_rcu(c, &h->list, list) {
1306 		if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK ||
1307 			c->state != state)
1308 			continue;
1309 
1310 		if (handle == c->iso_qos.bcast.big) {
1311 			rcu_read_unlock();
1312 			return c;
1313 		}
1314 	}
1315 
1316 	rcu_read_unlock();
1317 
1318 	return NULL;
1319 }
1320 
1321 static inline struct hci_conn *
hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev * hdev,__u8 big)1322 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big)
1323 {
1324 	struct hci_conn_hash *h = &hdev->conn_hash;
1325 	struct hci_conn  *c;
1326 
1327 	rcu_read_lock();
1328 
1329 	list_for_each_entry_rcu(c, &h->list, list) {
1330 		if (c->type != ISO_LINK ||
1331 			!test_bit(HCI_CONN_PA_SYNC, &c->flags))
1332 			continue;
1333 
1334 		if (c->iso_qos.bcast.big == big) {
1335 			rcu_read_unlock();
1336 			return c;
1337 		}
1338 	}
1339 	rcu_read_unlock();
1340 
1341 	return NULL;
1342 }
1343 
1344 static inline struct hci_conn *
hci_conn_hash_lookup_pa_sync_handle(struct hci_dev * hdev,__u16 sync_handle)1345 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle)
1346 {
1347 	struct hci_conn_hash *h = &hdev->conn_hash;
1348 	struct hci_conn  *c;
1349 
1350 	rcu_read_lock();
1351 
1352 	list_for_each_entry_rcu(c, &h->list, list) {
1353 		if (c->type != ISO_LINK ||
1354 			!test_bit(HCI_CONN_PA_SYNC, &c->flags))
1355 			continue;
1356 
1357 		if (c->sync_handle == sync_handle) {
1358 			rcu_read_unlock();
1359 			return c;
1360 		}
1361 	}
1362 	rcu_read_unlock();
1363 
1364 	return NULL;
1365 }
1366 
hci_conn_hash_lookup_state(struct hci_dev * hdev,__u8 type,__u16 state)1367 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1368 							__u8 type, __u16 state)
1369 {
1370 	struct hci_conn_hash *h = &hdev->conn_hash;
1371 	struct hci_conn  *c;
1372 
1373 	rcu_read_lock();
1374 
1375 	list_for_each_entry_rcu(c, &h->list, list) {
1376 		if (c->type == type && c->state == state) {
1377 			rcu_read_unlock();
1378 			return c;
1379 		}
1380 	}
1381 
1382 	rcu_read_unlock();
1383 
1384 	return NULL;
1385 }
1386 
1387 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
hci_conn_hash_list_state(struct hci_dev * hdev,hci_conn_func_t func,__u8 type,__u16 state,void * data)1388 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1389 					    hci_conn_func_t func, __u8 type,
1390 					    __u16 state, void *data)
1391 {
1392 	struct hci_conn_hash *h = &hdev->conn_hash;
1393 	struct hci_conn  *c;
1394 
1395 	if (!func)
1396 		return;
1397 
1398 	rcu_read_lock();
1399 
1400 	list_for_each_entry_rcu(c, &h->list, list) {
1401 		if (c->type == type && c->state == state)
1402 			func(c, data);
1403 	}
1404 
1405 	rcu_read_unlock();
1406 }
1407 
hci_lookup_le_connect(struct hci_dev * hdev)1408 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1409 {
1410 	struct hci_conn_hash *h = &hdev->conn_hash;
1411 	struct hci_conn  *c;
1412 
1413 	rcu_read_lock();
1414 
1415 	list_for_each_entry_rcu(c, &h->list, list) {
1416 		if (c->type == LE_LINK && c->state == BT_CONNECT &&
1417 		    !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1418 			rcu_read_unlock();
1419 			return c;
1420 		}
1421 	}
1422 
1423 	rcu_read_unlock();
1424 
1425 	return NULL;
1426 }
1427 
1428 /* Returns true if an le connection is in the scanning state */
hci_is_le_conn_scanning(struct hci_dev * hdev)1429 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
1430 {
1431 	struct hci_conn_hash *h = &hdev->conn_hash;
1432 	struct hci_conn  *c;
1433 
1434 	rcu_read_lock();
1435 
1436 	list_for_each_entry_rcu(c, &h->list, list) {
1437 		if (c->type == LE_LINK && c->state == BT_CONNECT &&
1438 		    test_bit(HCI_CONN_SCANNING, &c->flags)) {
1439 			rcu_read_unlock();
1440 			return true;
1441 		}
1442 	}
1443 
1444 	rcu_read_unlock();
1445 
1446 	return false;
1447 }
1448 
1449 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1450 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1451 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1452 bool hci_iso_setup_path(struct hci_conn *conn);
1453 int hci_le_create_cis_pending(struct hci_dev *hdev);
1454 int hci_conn_check_create_cis(struct hci_conn *conn);
1455 
1456 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1457 			      u8 role, u16 handle);
1458 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type,
1459 				    bdaddr_t *dst, u8 role);
1460 void hci_conn_del(struct hci_conn *conn);
1461 void hci_conn_hash_flush(struct hci_dev *hdev);
1462 
1463 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1464 void hci_chan_del(struct hci_chan *chan);
1465 void hci_chan_list_flush(struct hci_conn *conn);
1466 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1467 
1468 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1469 				     u8 dst_type, u8 sec_level,
1470 				     u16 conn_timeout,
1471 				     enum conn_reasons conn_reason);
1472 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1473 				u8 dst_type, bool dst_resolved, u8 sec_level,
1474 				u16 conn_timeout, u8 role);
1475 void hci_connect_le_scan_cleanup(struct hci_conn *conn, u8 status);
1476 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1477 				 u8 sec_level, u8 auth_type,
1478 				 enum conn_reasons conn_reason);
1479 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1480 				 __u16 setting, struct bt_codec *codec);
1481 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1482 			      __u8 dst_type, struct bt_iso_qos *qos);
1483 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst,
1484 			      struct bt_iso_qos *qos,
1485 			      __u8 base_len, __u8 *base);
1486 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1487 				 __u8 dst_type, struct bt_iso_qos *qos);
1488 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1489 				 __u8 dst_type, struct bt_iso_qos *qos,
1490 				 __u8 data_len, __u8 *data);
1491 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1492 		       __u8 sid, struct bt_iso_qos *qos);
1493 int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
1494 			   struct bt_iso_qos *qos,
1495 			   __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1496 int hci_conn_check_link_mode(struct hci_conn *conn);
1497 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1498 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1499 		      bool initiator);
1500 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1501 
1502 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1503 
1504 void hci_conn_failed(struct hci_conn *conn, u8 status);
1505 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle);
1506 
1507 /*
1508  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1509  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1510  * working or anything else. They just guarantee that the object is available
1511  * and can be dereferenced. So you can use its locks, local variables and any
1512  * other constant data.
1513  * Before accessing runtime data, you _must_ lock the object and then check that
1514  * it is still running. As soon as you release the locks, the connection might
1515  * get dropped, though.
1516  *
1517  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1518  * how long the underlying connection is held. So every channel that runs on the
1519  * hci_conn object calls this to prevent the connection from disappearing. As
1520  * long as you hold a device, you must also guarantee that you have a valid
1521  * reference to the device via hci_conn_get() (or the initial reference from
1522  * hci_conn_add()).
1523  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1524  * break because nobody cares for that. But this means, we cannot use
1525  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1526  */
1527 
hci_conn_get(struct hci_conn * conn)1528 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1529 {
1530 	get_device(&conn->dev);
1531 	return conn;
1532 }
1533 
hci_conn_put(struct hci_conn * conn)1534 static inline void hci_conn_put(struct hci_conn *conn)
1535 {
1536 	put_device(&conn->dev);
1537 }
1538 
hci_conn_hold(struct hci_conn * conn)1539 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
1540 {
1541 	BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1542 
1543 	atomic_inc(&conn->refcnt);
1544 	cancel_delayed_work(&conn->disc_work);
1545 
1546 	return conn;
1547 }
1548 
hci_conn_drop(struct hci_conn * conn)1549 static inline void hci_conn_drop(struct hci_conn *conn)
1550 {
1551 	BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1552 
1553 	if (atomic_dec_and_test(&conn->refcnt)) {
1554 		unsigned long timeo;
1555 
1556 		switch (conn->type) {
1557 		case ACL_LINK:
1558 		case LE_LINK:
1559 			cancel_delayed_work(&conn->idle_work);
1560 			if (conn->state == BT_CONNECTED) {
1561 				timeo = conn->disc_timeout;
1562 				if (!conn->out)
1563 					timeo *= 2;
1564 			} else {
1565 				timeo = 0;
1566 			}
1567 			break;
1568 
1569 		default:
1570 			timeo = 0;
1571 			break;
1572 		}
1573 
1574 		cancel_delayed_work(&conn->disc_work);
1575 		queue_delayed_work(conn->hdev->workqueue,
1576 				   &conn->disc_work, timeo);
1577 	}
1578 }
1579 
1580 /* ----- HCI Devices ----- */
hci_dev_put(struct hci_dev * d)1581 static inline void hci_dev_put(struct hci_dev *d)
1582 {
1583 	BT_DBG("%s orig refcnt %d", d->name,
1584 	       kref_read(&d->dev.kobj.kref));
1585 
1586 	put_device(&d->dev);
1587 }
1588 
hci_dev_hold(struct hci_dev * d)1589 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1590 {
1591 	BT_DBG("%s orig refcnt %d", d->name,
1592 	       kref_read(&d->dev.kobj.kref));
1593 
1594 	get_device(&d->dev);
1595 	return d;
1596 }
1597 
1598 #define hci_dev_lock(d)		mutex_lock(&d->lock)
1599 #define hci_dev_unlock(d)	mutex_unlock(&d->lock)
1600 
1601 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1602 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1603 
hci_get_drvdata(struct hci_dev * hdev)1604 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1605 {
1606 	return dev_get_drvdata(&hdev->dev);
1607 }
1608 
hci_set_drvdata(struct hci_dev * hdev,void * data)1609 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1610 {
1611 	dev_set_drvdata(&hdev->dev, data);
1612 }
1613 
hci_get_priv(struct hci_dev * hdev)1614 static inline void *hci_get_priv(struct hci_dev *hdev)
1615 {
1616 	return (char *)hdev + sizeof(*hdev);
1617 }
1618 
1619 struct hci_dev *hci_dev_get(int index);
1620 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1621 
1622 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1623 
hci_alloc_dev(void)1624 static inline struct hci_dev *hci_alloc_dev(void)
1625 {
1626 	return hci_alloc_dev_priv(0);
1627 }
1628 
1629 void hci_free_dev(struct hci_dev *hdev);
1630 int hci_register_dev(struct hci_dev *hdev);
1631 void hci_unregister_dev(struct hci_dev *hdev);
1632 void hci_release_dev(struct hci_dev *hdev);
1633 int hci_register_suspend_notifier(struct hci_dev *hdev);
1634 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1635 int hci_suspend_dev(struct hci_dev *hdev);
1636 int hci_resume_dev(struct hci_dev *hdev);
1637 int hci_reset_dev(struct hci_dev *hdev);
1638 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1639 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1640 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1641 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1642 
hci_set_msft_opcode(struct hci_dev * hdev,__u16 opcode)1643 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1644 {
1645 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1646 	hdev->msft_opcode = opcode;
1647 #endif
1648 }
1649 
hci_set_aosp_capable(struct hci_dev * hdev)1650 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1651 {
1652 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1653 	hdev->aosp_capable = true;
1654 #endif
1655 }
1656 
hci_devcd_setup(struct hci_dev * hdev)1657 static inline void hci_devcd_setup(struct hci_dev *hdev)
1658 {
1659 #ifdef CONFIG_DEV_COREDUMP
1660 	INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx);
1661 	INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout);
1662 	skb_queue_head_init(&hdev->dump.dump_q);
1663 #endif
1664 }
1665 
1666 int hci_dev_open(__u16 dev);
1667 int hci_dev_close(__u16 dev);
1668 int hci_dev_do_close(struct hci_dev *hdev);
1669 int hci_dev_reset(__u16 dev);
1670 int hci_dev_reset_stat(__u16 dev);
1671 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1672 int hci_get_dev_list(void __user *arg);
1673 int hci_get_dev_info(void __user *arg);
1674 int hci_get_conn_list(void __user *arg);
1675 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1676 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1677 int hci_inquiry(void __user *arg);
1678 
1679 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1680 					   bdaddr_t *bdaddr, u8 type);
1681 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1682 				    struct list_head *list, bdaddr_t *bdaddr,
1683 				    u8 type);
1684 struct bdaddr_list_with_flags *
1685 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1686 				  u8 type);
1687 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1688 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1689 				 u8 type, u8 *peer_irk, u8 *local_irk);
1690 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1691 				   u8 type, u32 flags);
1692 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1693 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1694 				 u8 type);
1695 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1696 				   u8 type);
1697 void hci_bdaddr_list_clear(struct list_head *list);
1698 
1699 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1700 					       bdaddr_t *addr, u8 addr_type);
1701 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1702 					    bdaddr_t *addr, u8 addr_type);
1703 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1704 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1705 void hci_conn_params_free(struct hci_conn_params *param);
1706 
1707 void hci_pend_le_list_del_init(struct hci_conn_params *param);
1708 void hci_pend_le_list_add(struct hci_conn_params *param,
1709 			  struct list_head *list);
1710 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1711 						  bdaddr_t *addr,
1712 						  u8 addr_type);
1713 
1714 void hci_uuids_clear(struct hci_dev *hdev);
1715 
1716 void hci_link_keys_clear(struct hci_dev *hdev);
1717 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1718 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1719 				  bdaddr_t *bdaddr, u8 *val, u8 type,
1720 				  u8 pin_len, bool *persistent);
1721 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1722 			    u8 addr_type, u8 type, u8 authenticated,
1723 			    u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1724 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1725 			     u8 addr_type, u8 role);
1726 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1727 void hci_smp_ltks_clear(struct hci_dev *hdev);
1728 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1729 
1730 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1731 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1732 				     u8 addr_type);
1733 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1734 			    u8 addr_type, u8 val[16], bdaddr_t *rpa);
1735 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1736 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1737 void hci_blocked_keys_clear(struct hci_dev *hdev);
1738 void hci_smp_irks_clear(struct hci_dev *hdev);
1739 
1740 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1741 
1742 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1743 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1744 					  bdaddr_t *bdaddr, u8 bdaddr_type);
1745 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1746 			    u8 bdaddr_type, u8 *hash192, u8 *rand192,
1747 			    u8 *hash256, u8 *rand256);
1748 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1749 			       u8 bdaddr_type);
1750 
1751 void hci_adv_instances_clear(struct hci_dev *hdev);
1752 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1753 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1754 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1755 				      u32 flags, u16 adv_data_len, u8 *adv_data,
1756 				      u16 scan_rsp_len, u8 *scan_rsp_data,
1757 				      u16 timeout, u16 duration, s8 tx_power,
1758 				      u32 min_interval, u32 max_interval,
1759 				      u8 mesh_handle);
1760 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1761 				      u32 flags, u8 data_len, u8 *data,
1762 				      u32 min_interval, u32 max_interval);
1763 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1764 			 u16 adv_data_len, u8 *adv_data,
1765 			 u16 scan_rsp_len, u8 *scan_rsp_data);
1766 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1767 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1768 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1769 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1770 
1771 void hci_adv_monitors_clear(struct hci_dev *hdev);
1772 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1773 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1774 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1775 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1776 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1777 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1778 
1779 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1780 
1781 void hci_init_sysfs(struct hci_dev *hdev);
1782 void hci_conn_init_sysfs(struct hci_conn *conn);
1783 void hci_conn_add_sysfs(struct hci_conn *conn);
1784 void hci_conn_del_sysfs(struct hci_conn *conn);
1785 
1786 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1787 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1788 
1789 /* ----- LMP capabilities ----- */
1790 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
1791 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
1792 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
1793 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
1794 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
1795 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
1796 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
1797 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
1798 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
1799 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1800 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1801 #define lmp_esco_2m_capable(dev)   ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1802 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
1803 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1804 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1805 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1806 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1807 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1808 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1809 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1810 #define lmp_edr_2m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_2M)
1811 #define lmp_edr_3m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_3M)
1812 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1813 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1814 
1815 /* ----- Extended LMP capabilities ----- */
1816 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1817 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1818 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1819 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1820 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1821 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1822 
1823 /* ----- Host capabilities ----- */
1824 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1825 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1826 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1827 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1828 
1829 #define hdev_is_powered(dev)   (test_bit(HCI_UP, &(dev)->flags) && \
1830 				!hci_dev_test_flag(dev, HCI_AUTO_OFF))
1831 #define bredr_sc_enabled(dev)  (lmp_sc_capable(dev) && \
1832 				hci_dev_test_flag(dev, HCI_SC_ENABLED))
1833 #define rpa_valid(dev)         (bacmp(&dev->rpa, BDADDR_ANY) && \
1834 				!hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1835 #define adv_rpa_valid(adv)     (bacmp(&adv->random_addr, BDADDR_ANY) && \
1836 				!adv->rpa_expired)
1837 
1838 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1839 		      ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1840 
1841 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
1842 
1843 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1844 		      ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1845 
1846 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \
1847 			       !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \
1848 					 &(dev)->quirks))
1849 
1850 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1851 			 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1852 
1853 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1854 
1855 /* Use LL Privacy based address resolution if supported */
1856 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1857 			     hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1858 
1859 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1860 				   (hdev->commands[39] & 0x04))
1861 
1862 #define read_key_size_capable(dev) \
1863 	((dev)->commands[20] & 0x10 && \
1864 	 !test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks))
1865 
1866 /* Use enhanced synchronous connection if command is supported and its quirk
1867  * has not been set.
1868  */
1869 #define enhanced_sync_conn_capable(dev) \
1870 	(((dev)->commands[29] & 0x08) && \
1871 	 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1872 
1873 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1874 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1875 			   ((dev)->commands[37] & 0x40) && \
1876 			   !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1877 
1878 /* Use ext create connection if command is supported */
1879 #define use_ext_conn(dev) (((dev)->commands[37] & 0x80) && \
1880 	!test_bit(HCI_QUIRK_BROKEN_EXT_CREATE_CONN, &(dev)->quirks))
1881 /* Extended advertising support */
1882 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1883 
1884 /* Maximum advertising length */
1885 #define max_adv_len(dev) \
1886 	(ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH)
1887 
1888 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1889  *
1890  * C24: Mandatory if the LE Controller supports Connection State and either
1891  * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1892  */
1893 #define use_enhanced_conn_complete(dev) ((ll_privacy_capable(dev) || \
1894 					 ext_adv_capable(dev)) && \
1895 					 !test_bit(HCI_QUIRK_BROKEN_EXT_CREATE_CONN, \
1896 						 &(dev)->quirks))
1897 
1898 /* Periodic advertising support */
1899 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1900 
1901 /* CIS Master/Slave and BIS support */
1902 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1903 #define cis_capable(dev) \
1904 	(cis_central_capable(dev) || cis_peripheral_capable(dev))
1905 #define cis_central_capable(dev) \
1906 	((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1907 #define cis_peripheral_capable(dev) \
1908 	((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1909 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1910 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER)
1911 
1912 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1913 	(!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1914 
1915 /* ----- HCI protocols ----- */
1916 #define HCI_PROTO_DEFER             0x01
1917 
hci_proto_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 type,__u8 * flags)1918 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1919 					__u8 type, __u8 *flags)
1920 {
1921 	switch (type) {
1922 	case ACL_LINK:
1923 		return l2cap_connect_ind(hdev, bdaddr);
1924 
1925 	case SCO_LINK:
1926 	case ESCO_LINK:
1927 		return sco_connect_ind(hdev, bdaddr, flags);
1928 
1929 	case ISO_LINK:
1930 		return iso_connect_ind(hdev, bdaddr, flags);
1931 
1932 	default:
1933 		BT_ERR("unknown link type %d", type);
1934 		return -EINVAL;
1935 	}
1936 }
1937 
hci_proto_disconn_ind(struct hci_conn * conn)1938 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1939 {
1940 	if (conn->type != ACL_LINK && conn->type != LE_LINK)
1941 		return HCI_ERROR_REMOTE_USER_TERM;
1942 
1943 	return l2cap_disconn_ind(conn);
1944 }
1945 
1946 /* ----- HCI callbacks ----- */
1947 struct hci_cb {
1948 	struct list_head list;
1949 
1950 	char *name;
1951 
1952 	void (*connect_cfm)	(struct hci_conn *conn, __u8 status);
1953 	void (*disconn_cfm)	(struct hci_conn *conn, __u8 status);
1954 	void (*security_cfm)	(struct hci_conn *conn, __u8 status,
1955 								__u8 encrypt);
1956 	void (*key_change_cfm)	(struct hci_conn *conn, __u8 status);
1957 	void (*role_switch_cfm)	(struct hci_conn *conn, __u8 status, __u8 role);
1958 };
1959 
hci_connect_cfm(struct hci_conn * conn,__u8 status)1960 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1961 {
1962 	struct hci_cb *cb;
1963 
1964 	mutex_lock(&hci_cb_list_lock);
1965 	list_for_each_entry(cb, &hci_cb_list, list) {
1966 		if (cb->connect_cfm)
1967 			cb->connect_cfm(conn, status);
1968 	}
1969 	mutex_unlock(&hci_cb_list_lock);
1970 
1971 	if (conn->connect_cfm_cb)
1972 		conn->connect_cfm_cb(conn, status);
1973 }
1974 
hci_disconn_cfm(struct hci_conn * conn,__u8 reason)1975 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1976 {
1977 	struct hci_cb *cb;
1978 
1979 	mutex_lock(&hci_cb_list_lock);
1980 	list_for_each_entry(cb, &hci_cb_list, list) {
1981 		if (cb->disconn_cfm)
1982 			cb->disconn_cfm(conn, reason);
1983 	}
1984 	mutex_unlock(&hci_cb_list_lock);
1985 
1986 	if (conn->disconn_cfm_cb)
1987 		conn->disconn_cfm_cb(conn, reason);
1988 }
1989 
hci_auth_cfm(struct hci_conn * conn,__u8 status)1990 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1991 {
1992 	struct hci_cb *cb;
1993 	__u8 encrypt;
1994 
1995 	if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1996 		return;
1997 
1998 	encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1999 
2000 	mutex_lock(&hci_cb_list_lock);
2001 	list_for_each_entry(cb, &hci_cb_list, list) {
2002 		if (cb->security_cfm)
2003 			cb->security_cfm(conn, status, encrypt);
2004 	}
2005 	mutex_unlock(&hci_cb_list_lock);
2006 
2007 	if (conn->security_cfm_cb)
2008 		conn->security_cfm_cb(conn, status);
2009 }
2010 
hci_encrypt_cfm(struct hci_conn * conn,__u8 status)2011 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
2012 {
2013 	struct hci_cb *cb;
2014 	__u8 encrypt;
2015 
2016 	if (conn->state == BT_CONFIG) {
2017 		if (!status)
2018 			conn->state = BT_CONNECTED;
2019 
2020 		hci_connect_cfm(conn, status);
2021 		hci_conn_drop(conn);
2022 		return;
2023 	}
2024 
2025 	if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2026 		encrypt = 0x00;
2027 	else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2028 		encrypt = 0x02;
2029 	else
2030 		encrypt = 0x01;
2031 
2032 	if (!status) {
2033 		if (conn->sec_level == BT_SECURITY_SDP)
2034 			conn->sec_level = BT_SECURITY_LOW;
2035 
2036 		if (conn->pending_sec_level > conn->sec_level)
2037 			conn->sec_level = conn->pending_sec_level;
2038 	}
2039 
2040 	mutex_lock(&hci_cb_list_lock);
2041 	list_for_each_entry(cb, &hci_cb_list, list) {
2042 		if (cb->security_cfm)
2043 			cb->security_cfm(conn, status, encrypt);
2044 	}
2045 	mutex_unlock(&hci_cb_list_lock);
2046 
2047 	if (conn->security_cfm_cb)
2048 		conn->security_cfm_cb(conn, status);
2049 }
2050 
hci_key_change_cfm(struct hci_conn * conn,__u8 status)2051 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
2052 {
2053 	struct hci_cb *cb;
2054 
2055 	mutex_lock(&hci_cb_list_lock);
2056 	list_for_each_entry(cb, &hci_cb_list, list) {
2057 		if (cb->key_change_cfm)
2058 			cb->key_change_cfm(conn, status);
2059 	}
2060 	mutex_unlock(&hci_cb_list_lock);
2061 }
2062 
hci_role_switch_cfm(struct hci_conn * conn,__u8 status,__u8 role)2063 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
2064 								__u8 role)
2065 {
2066 	struct hci_cb *cb;
2067 
2068 	mutex_lock(&hci_cb_list_lock);
2069 	list_for_each_entry(cb, &hci_cb_list, list) {
2070 		if (cb->role_switch_cfm)
2071 			cb->role_switch_cfm(conn, status, role);
2072 	}
2073 	mutex_unlock(&hci_cb_list_lock);
2074 }
2075 
hci_bdaddr_is_rpa(bdaddr_t * bdaddr,u8 addr_type)2076 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
2077 {
2078 	if (addr_type != ADDR_LE_DEV_RANDOM)
2079 		return false;
2080 
2081 	if ((bdaddr->b[5] & 0xc0) == 0x40)
2082 	       return true;
2083 
2084 	return false;
2085 }
2086 
hci_is_identity_address(bdaddr_t * addr,u8 addr_type)2087 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
2088 {
2089 	if (addr_type == ADDR_LE_DEV_PUBLIC)
2090 		return true;
2091 
2092 	/* Check for Random Static address type */
2093 	if ((addr->b[5] & 0xc0) == 0xc0)
2094 		return true;
2095 
2096 	return false;
2097 }
2098 
hci_get_irk(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 addr_type)2099 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
2100 					  bdaddr_t *bdaddr, u8 addr_type)
2101 {
2102 	if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
2103 		return NULL;
2104 
2105 	return hci_find_irk_by_rpa(hdev, bdaddr);
2106 }
2107 
hci_check_conn_params(u16 min,u16 max,u16 latency,u16 to_multiplier)2108 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
2109 					u16 to_multiplier)
2110 {
2111 	u16 max_latency;
2112 
2113 	if (min > max) {
2114 		BT_WARN("min %d > max %d", min, max);
2115 		return -EINVAL;
2116 	}
2117 
2118 	if (min < 6) {
2119 		BT_WARN("min %d < 6", min);
2120 		return -EINVAL;
2121 	}
2122 
2123 	if (max > 3200) {
2124 		BT_WARN("max %d > 3200", max);
2125 		return -EINVAL;
2126 	}
2127 
2128 	if (to_multiplier < 10) {
2129 		BT_WARN("to_multiplier %d < 10", to_multiplier);
2130 		return -EINVAL;
2131 	}
2132 
2133 	if (to_multiplier > 3200) {
2134 		BT_WARN("to_multiplier %d > 3200", to_multiplier);
2135 		return -EINVAL;
2136 	}
2137 
2138 	if (max >= to_multiplier * 8) {
2139 		BT_WARN("max %d >= to_multiplier %d * 8", max, to_multiplier);
2140 		return -EINVAL;
2141 	}
2142 
2143 	max_latency = (to_multiplier * 4 / max) - 1;
2144 	if (latency > 499) {
2145 		BT_WARN("latency %d > 499", latency);
2146 		return -EINVAL;
2147 	}
2148 
2149 	if (latency > max_latency) {
2150 		BT_WARN("latency %d > max_latency %d", latency, max_latency);
2151 		return -EINVAL;
2152 	}
2153 
2154 	return 0;
2155 }
2156 
2157 int hci_register_cb(struct hci_cb *hcb);
2158 int hci_unregister_cb(struct hci_cb *hcb);
2159 
2160 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2161 		   const void *param);
2162 
2163 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2164 		 const void *param);
2165 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2166 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2167 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2168 
2169 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2170 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2171 
2172 u32 hci_conn_get_phy(struct hci_conn *conn);
2173 
2174 /* ----- HCI Sockets ----- */
2175 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2176 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2177 			 int flag, struct sock *skip_sk);
2178 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2179 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2180 				 void *data, u16 data_len, ktime_t tstamp,
2181 				 int flag, struct sock *skip_sk);
2182 
2183 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2184 
2185 #define HCI_MGMT_VAR_LEN	BIT(0)
2186 #define HCI_MGMT_NO_HDEV	BIT(1)
2187 #define HCI_MGMT_UNTRUSTED	BIT(2)
2188 #define HCI_MGMT_UNCONFIGURED	BIT(3)
2189 #define HCI_MGMT_HDEV_OPTIONAL	BIT(4)
2190 
2191 struct hci_mgmt_handler {
2192 	int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2193 		     u16 data_len);
2194 	size_t data_len;
2195 	unsigned long flags;
2196 };
2197 
2198 struct hci_mgmt_chan {
2199 	struct list_head list;
2200 	unsigned short channel;
2201 	size_t handler_count;
2202 	const struct hci_mgmt_handler *handlers;
2203 	void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2204 };
2205 
2206 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2207 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2208 
2209 /* Management interface */
2210 #define DISCOV_TYPE_BREDR		(BIT(BDADDR_BREDR))
2211 #define DISCOV_TYPE_LE			(BIT(BDADDR_LE_PUBLIC) | \
2212 					 BIT(BDADDR_LE_RANDOM))
2213 #define DISCOV_TYPE_INTERLEAVED		(BIT(BDADDR_BREDR) | \
2214 					 BIT(BDADDR_LE_PUBLIC) | \
2215 					 BIT(BDADDR_LE_RANDOM))
2216 
2217 /* These LE scan and inquiry parameters were chosen according to LE General
2218  * Discovery Procedure specification.
2219  */
2220 #define DISCOV_LE_SCAN_WIN		0x12
2221 #define DISCOV_LE_SCAN_INT		0x12
2222 #define DISCOV_LE_TIMEOUT		10240	/* msec */
2223 #define DISCOV_INTERLEAVED_TIMEOUT	5120	/* msec */
2224 #define DISCOV_INTERLEAVED_INQUIRY_LEN	0x04
2225 #define DISCOV_BREDR_INQUIRY_LEN	0x08
2226 #define DISCOV_LE_RESTART_DELAY		msecs_to_jiffies(200)	/* msec */
2227 #define DISCOV_LE_FAST_ADV_INT_MIN	0x00A0	/* 100 msec */
2228 #define DISCOV_LE_FAST_ADV_INT_MAX	0x00F0	/* 150 msec */
2229 #define DISCOV_LE_PER_ADV_INT_MIN	0x00A0	/* 200 msec */
2230 #define DISCOV_LE_PER_ADV_INT_MAX	0x00A0	/* 200 msec */
2231 #define DISCOV_LE_ADV_MESH_MIN		0x00A0  /* 100 msec */
2232 #define DISCOV_LE_ADV_MESH_MAX		0x00A0  /* 100 msec */
2233 #define INTERVAL_TO_MS(x)		(((x) * 10) / 0x10)
2234 
2235 #define NAME_RESOLVE_DURATION		msecs_to_jiffies(10240)	/* 10.24 sec */
2236 
2237 void mgmt_fill_version_info(void *ver);
2238 int mgmt_new_settings(struct hci_dev *hdev);
2239 void mgmt_index_added(struct hci_dev *hdev);
2240 void mgmt_index_removed(struct hci_dev *hdev);
2241 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2242 void mgmt_power_on(struct hci_dev *hdev, int err);
2243 void __mgmt_power_off(struct hci_dev *hdev);
2244 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2245 		       bool persistent);
2246 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2247 			   u8 *name, u8 name_len);
2248 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2249 			      u8 link_type, u8 addr_type, u8 reason,
2250 			      bool mgmt_connected);
2251 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2252 			    u8 link_type, u8 addr_type, u8 status);
2253 void mgmt_connect_failed(struct hci_dev *hdev, struct hci_conn *conn,
2254 			 u8 status);
2255 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2256 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2257 				  u8 status);
2258 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2259 				      u8 status);
2260 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2261 			      u8 link_type, u8 addr_type, u32 value,
2262 			      u8 confirm_hint);
2263 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2264 				     u8 link_type, u8 addr_type, u8 status);
2265 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2266 					 u8 link_type, u8 addr_type, u8 status);
2267 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2268 			      u8 link_type, u8 addr_type);
2269 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2270 				     u8 link_type, u8 addr_type, u8 status);
2271 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2272 					 u8 link_type, u8 addr_type, u8 status);
2273 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2274 			     u8 link_type, u8 addr_type, u32 passkey,
2275 			     u8 entered);
2276 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2277 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2278 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2279 				    u8 status);
2280 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2281 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2282 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2283 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2284 		       u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2285 		       u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2286 		       u64 instant);
2287 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2288 		      u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2289 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2290 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2291 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2292 		   u8 addr_type);
2293 bool mgmt_powering_down(struct hci_dev *hdev);
2294 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2295 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2296 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2297 		   bool persistent);
2298 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2299 			 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2300 			 u16 max_interval, u16 latency, u16 timeout);
2301 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2302 bool mgmt_get_connectable(struct hci_dev *hdev);
2303 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2304 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2305 			    u8 instance);
2306 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2307 			      u8 instance);
2308 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2309 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2310 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2311 				  bdaddr_t *bdaddr, u8 addr_type);
2312 
2313 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2314 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2315 		      u16 to_multiplier);
2316 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2317 		      __u8 ltk[16], __u8 key_size);
2318 
2319 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2320 			       u8 *bdaddr_type);
2321 
2322 #define SCO_AIRMODE_MASK       0x0003
2323 #define SCO_AIRMODE_CVSD       0x0000
2324 #define SCO_AIRMODE_TRANSP     0x0003
2325 
2326 #define LOCAL_CODEC_ACL_MASK	BIT(0)
2327 #define LOCAL_CODEC_SCO_MASK	BIT(1)
2328 
2329 #define TRANSPORT_TYPE_MAX	0x04
2330 
2331 #endif /* __HCI_CORE_H */
2332