1/*
   2   BlueZ - Bluetooth protocol stack for Linux
   3   Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
 
   4
   5   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7   This program is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU General Public License version 2 as
   9   published by the Free Software Foundation;
  10
  11   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22   SOFTWARE IS DISCLAIMED.
  23*/
  24
  25#ifndef __HCI_CORE_H
  26#define __HCI_CORE_H
  27
  28#include <linux/idr.h>
  29#include <linux/leds.h>
  30#include <linux/rculist.h>
  31
  32#include <net/bluetooth/hci.h>
  33#include <net/bluetooth/hci_sync.h>
  34#include <net/bluetooth/hci_sock.h>
 
  35
  36/* HCI priority */
  37#define HCI_PRIO_MAX	7
  38
  39/* HCI maximum id value */
  40#define HCI_MAX_ID 10000
  41
  42/* HCI Core structures */
  43struct inquiry_data {
  44	bdaddr_t	bdaddr;
  45	__u8		pscan_rep_mode;
  46	__u8		pscan_period_mode;
  47	__u8		pscan_mode;
  48	__u8		dev_class[3];
  49	__le16		clock_offset;
  50	__s8		rssi;
  51	__u8		ssp_mode;
  52};
  53
  54struct inquiry_entry {
  55	struct list_head	all;		/* inq_cache.all */
  56	struct list_head	list;		/* unknown or resolve */
  57	enum {
  58		NAME_NOT_KNOWN,
  59		NAME_NEEDED,
  60		NAME_PENDING,
  61		NAME_KNOWN,
  62	} name_state;
  63	__u32			timestamp;
  64	struct inquiry_data	data;
  65};
  66
  67struct discovery_state {
  68	int			type;
  69	enum {
  70		DISCOVERY_STOPPED,
  71		DISCOVERY_STARTING,
  72		DISCOVERY_FINDING,
  73		DISCOVERY_RESOLVING,
  74		DISCOVERY_STOPPING,
  75	} state;
  76	struct list_head	all;	/* All devices found during inquiry */
  77	struct list_head	unknown;	/* Name state not known */
  78	struct list_head	resolve;	/* Name needs to be resolved */
  79	__u32			timestamp;
  80	bdaddr_t		last_adv_addr;
  81	u8			last_adv_addr_type;
  82	s8			last_adv_rssi;
  83	u32			last_adv_flags;
  84	u8			last_adv_data[HCI_MAX_AD_LENGTH];
  85	u8			last_adv_data_len;
  86	bool			report_invalid_rssi;
  87	bool			result_filtering;
  88	bool			limited;
  89	s8			rssi;
  90	u16			uuid_count;
  91	u8			(*uuids)[16];
  92	unsigned long		scan_start;
  93	unsigned long		scan_duration;
  94	unsigned long		name_resolve_timeout;
  95};
  96
  97#define SUSPEND_NOTIFIER_TIMEOUT	msecs_to_jiffies(2000) /* 2 seconds */
  98
  99enum suspend_tasks {
 100	SUSPEND_PAUSE_DISCOVERY,
 101	SUSPEND_UNPAUSE_DISCOVERY,
 102
 103	SUSPEND_PAUSE_ADVERTISING,
 104	SUSPEND_UNPAUSE_ADVERTISING,
 105
 106	SUSPEND_SCAN_DISABLE,
 107	SUSPEND_SCAN_ENABLE,
 108	SUSPEND_DISCONNECTING,
 109
 110	SUSPEND_POWERING_DOWN,
 111
 112	SUSPEND_PREPARE_NOTIFIER,
 113
 114	SUSPEND_SET_ADV_FILTER,
 115	__SUSPEND_NUM_TASKS
 116};
 117
 118enum suspended_state {
 119	BT_RUNNING = 0,
 120	BT_SUSPEND_DISCONNECT,
 121	BT_SUSPEND_CONFIGURE_WAKE,
 122};
 123
 124struct hci_conn_hash {
 125	struct list_head list;
 126	unsigned int     acl_num;
 127	unsigned int     amp_num;
 128	unsigned int     sco_num;
 129	unsigned int     iso_num;
 130	unsigned int     le_num;
 131	unsigned int     le_num_peripheral;
 132};
 133
 134struct bdaddr_list {
 135	struct list_head list;
 136	bdaddr_t bdaddr;
 137	u8 bdaddr_type;
 138};
 139
 140struct codec_list {
 141	struct list_head list;
 142	u8	id;
 143	__u16	cid;
 144	__u16	vid;
 145	u8	transport;
 146	u8	num_caps;
 147	u32	len;
 148	struct hci_codec_caps caps[];
 149};
 150
 151struct bdaddr_list_with_irk {
 152	struct list_head list;
 153	bdaddr_t bdaddr;
 154	u8 bdaddr_type;
 155	u8 peer_irk[16];
 156	u8 local_irk[16];
 157};
 158
 159/* Bitmask of connection flags */
 160enum hci_conn_flags {
 161	HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
 162	HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
 163};
 164typedef u8 hci_conn_flags_t;
 165
 166struct bdaddr_list_with_flags {
 167	struct list_head list;
 168	bdaddr_t bdaddr;
 169	u8 bdaddr_type;
 170	hci_conn_flags_t flags;
 171};
 172
 173struct bt_uuid {
 174	struct list_head list;
 175	u8 uuid[16];
 176	u8 size;
 177	u8 svc_hint;
 178};
 179
 180struct blocked_key {
 181	struct list_head list;
 182	struct rcu_head rcu;
 183	u8 type;
 184	u8 val[16];
 185};
 186
 187struct smp_csrk {
 188	bdaddr_t bdaddr;
 189	u8 bdaddr_type;
 
 190	u8 type;
 191	u8 val[16];
 192};
 193
 194struct smp_ltk {
 195	struct list_head list;
 196	struct rcu_head rcu;
 197	bdaddr_t bdaddr;
 198	u8 bdaddr_type;
 
 199	u8 authenticated;
 200	u8 type;
 201	u8 enc_size;
 202	__le16 ediv;
 203	__le64 rand;
 204	u8 val[16];
 205};
 206
 207struct smp_irk {
 208	struct list_head list;
 209	struct rcu_head rcu;
 210	bdaddr_t rpa;
 211	bdaddr_t bdaddr;
 212	u8 addr_type;
 
 213	u8 val[16];
 214};
 215
 216struct link_key {
 217	struct list_head list;
 218	struct rcu_head rcu;
 219	bdaddr_t bdaddr;
 
 
 220	u8 type;
 221	u8 val[HCI_LINK_KEY_SIZE];
 222	u8 pin_len;
 223};
 224
 225struct oob_data {
 226	struct list_head list;
 227	bdaddr_t bdaddr;
 228	u8 bdaddr_type;
 229	u8 present;
 230	u8 hash192[16];
 231	u8 rand192[16];
 232	u8 hash256[16];
 233	u8 rand256[16];
 234};
 235
 236struct adv_info {
 237	struct list_head list;
 238	bool	enabled;
 239	bool	pending;
 240	bool	periodic;
 241	__u8	mesh;
 242	__u8	instance;
 243	__u32	flags;
 244	__u16	timeout;
 245	__u16	remaining_time;
 246	__u16	duration;
 247	__u16	adv_data_len;
 248	__u8	adv_data[HCI_MAX_EXT_AD_LENGTH];
 249	bool	adv_data_changed;
 250	__u16	scan_rsp_len;
 251	__u8	scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
 252	bool	scan_rsp_changed;
 253	__u16	per_adv_data_len;
 254	__u8	per_adv_data[HCI_MAX_PER_AD_LENGTH];
 255	__s8	tx_power;
 256	__u32   min_interval;
 257	__u32   max_interval;
 258	bdaddr_t	random_addr;
 259	bool 		rpa_expired;
 260	struct delayed_work	rpa_expired_cb;
 261};
 262
 263#define HCI_MAX_ADV_INSTANCES		5
 264#define HCI_DEFAULT_ADV_DURATION	2
 265
 266#define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
 267
 268#define DATA_CMP(_d1, _l1, _d2, _l2) \
 269	(_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
 270
 271#define ADV_DATA_CMP(_adv, _data, _len) \
 272	DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
 273
 274#define SCAN_RSP_CMP(_adv, _data, _len) \
 275	DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
 276
 277struct monitored_device {
 278	struct list_head list;
 279
 280	bdaddr_t bdaddr;
 281	__u8     addr_type;
 282	__u16    handle;
 283	bool     notified;
 284};
 285
 286struct adv_pattern {
 287	struct list_head list;
 288	__u8 ad_type;
 289	__u8 offset;
 290	__u8 length;
 291	__u8 value[HCI_MAX_AD_LENGTH];
 292};
 293
 294struct adv_rssi_thresholds {
 295	__s8 low_threshold;
 296	__s8 high_threshold;
 297	__u16 low_threshold_timeout;
 298	__u16 high_threshold_timeout;
 299	__u8 sampling_period;
 300};
 301
 302struct adv_monitor {
 303	struct list_head patterns;
 304	struct adv_rssi_thresholds rssi;
 305	__u16		handle;
 306
 307	enum {
 308		ADV_MONITOR_STATE_NOT_REGISTERED,
 309		ADV_MONITOR_STATE_REGISTERED,
 310		ADV_MONITOR_STATE_OFFLOADED
 311	} state;
 312};
 313
 314#define HCI_MIN_ADV_MONITOR_HANDLE		1
 315#define HCI_MAX_ADV_MONITOR_NUM_HANDLES		32
 316#define HCI_MAX_ADV_MONITOR_NUM_PATTERNS	16
 317#define HCI_ADV_MONITOR_EXT_NONE		1
 318#define HCI_ADV_MONITOR_EXT_MSFT		2
 319
 320#define HCI_MAX_SHORT_NAME_LENGTH	10
 321
 322#define HCI_CONN_HANDLE_UNSET		0xffff
 323#define HCI_CONN_HANDLE_MAX		0x0eff
 
 324
 325/* Min encryption key size to match with SMP */
 326#define HCI_MIN_ENC_KEY_SIZE		7
 327
 328/* Default LE RPA expiry time, 15 minutes */
 329#define HCI_DEFAULT_RPA_TIMEOUT		(15 * 60)
 330
 331/* Default min/max age of connection information (1s/3s) */
 332#define DEFAULT_CONN_INFO_MIN_AGE	1000
 333#define DEFAULT_CONN_INFO_MAX_AGE	3000
 334/* Default authenticated payload timeout 30s */
 335#define DEFAULT_AUTH_PAYLOAD_TIMEOUT   0x0bb8
 336
 337struct amp_assoc {
 338	__u16	len;
 339	__u16	offset;
 340	__u16	rem_len;
 341	__u16	len_so_far;
 342	__u8	data[HCI_MAX_AMP_ASSOC_SIZE];
 343};
 344
 345#define HCI_MAX_PAGES	3
 346
 347struct hci_dev {
 348	struct list_head list;
 349	struct mutex	lock;
 350
 351	char		name[8];
 
 
 352	unsigned long	flags;
 353	__u16		id;
 354	__u8		bus;
 355	__u8		dev_type;
 356	bdaddr_t	bdaddr;
 357	bdaddr_t	setup_addr;
 358	bdaddr_t	public_addr;
 359	bdaddr_t	random_addr;
 360	bdaddr_t	static_addr;
 361	__u8		adv_addr_type;
 362	__u8		dev_name[HCI_MAX_NAME_LENGTH];
 363	__u8		short_name[HCI_MAX_SHORT_NAME_LENGTH];
 364	__u8		eir[HCI_MAX_EIR_LENGTH];
 365	__u16		appearance;
 366	__u8		dev_class[3];
 367	__u8		major_class;
 368	__u8		minor_class;
 369	__u8		max_page;
 370	__u8		features[HCI_MAX_PAGES][8];
 371	__u8		le_features[8];
 372	__u8		le_accept_list_size;
 373	__u8		le_resolv_list_size;
 374	__u8		le_num_of_adv_sets;
 375	__u8		le_states[8];
 376	__u8		mesh_ad_types[16];
 377	__u8		mesh_send_ref;
 378	__u8		commands[64];
 379	__u8		hci_ver;
 380	__u16		hci_rev;
 381	__u8		lmp_ver;
 382	__u16		manufacturer;
 383	__u16		lmp_subver;
 384	__u16		voice_setting;
 385	__u8		num_iac;
 386	__u16		stored_max_keys;
 387	__u16		stored_num_keys;
 388	__u8		io_capability;
 389	__s8		inq_tx_power;
 390	__u8		err_data_reporting;
 391	__u16		page_scan_interval;
 392	__u16		page_scan_window;
 393	__u8		page_scan_type;
 394	__u8		le_adv_channel_map;
 395	__u16		le_adv_min_interval;
 396	__u16		le_adv_max_interval;
 397	__u8		le_scan_type;
 398	__u16		le_scan_interval;
 399	__u16		le_scan_window;
 400	__u16		le_scan_int_suspend;
 401	__u16		le_scan_window_suspend;
 402	__u16		le_scan_int_discovery;
 403	__u16		le_scan_window_discovery;
 404	__u16		le_scan_int_adv_monitor;
 405	__u16		le_scan_window_adv_monitor;
 406	__u16		le_scan_int_connect;
 407	__u16		le_scan_window_connect;
 408	__u16		le_conn_min_interval;
 409	__u16		le_conn_max_interval;
 410	__u16		le_conn_latency;
 411	__u16		le_supv_timeout;
 412	__u16		le_def_tx_len;
 413	__u16		le_def_tx_time;
 414	__u16		le_max_tx_len;
 415	__u16		le_max_tx_time;
 416	__u16		le_max_rx_len;
 417	__u16		le_max_rx_time;
 418	__u8		le_max_key_size;
 419	__u8		le_min_key_size;
 420	__u16		discov_interleaved_timeout;
 421	__u16		conn_info_min_age;
 422	__u16		conn_info_max_age;
 423	__u16		auth_payload_timeout;
 424	__u8		min_enc_key_size;
 425	__u8		max_enc_key_size;
 426	__u8		pairing_opts;
 427	__u8		ssp_debug_mode;
 428	__u8		hw_error_code;
 429	__u32		clock;
 430	__u16		advmon_allowlist_duration;
 431	__u16		advmon_no_filter_duration;
 432	__u8		enable_advmon_interleave_scan;
 433
 434	__u16		devid_source;
 435	__u16		devid_vendor;
 436	__u16		devid_product;
 437	__u16		devid_version;
 438
 439	__u8		def_page_scan_type;
 440	__u16		def_page_scan_int;
 441	__u16		def_page_scan_window;
 442	__u8		def_inq_scan_type;
 443	__u16		def_inq_scan_int;
 444	__u16		def_inq_scan_window;
 445	__u16		def_br_lsto;
 446	__u16		def_page_timeout;
 447	__u16		def_multi_adv_rotation_duration;
 448	__u16		def_le_autoconnect_timeout;
 449	__s8		min_le_tx_power;
 450	__s8		max_le_tx_power;
 451
 452	__u16		pkt_type;
 453	__u16		esco_type;
 454	__u16		link_policy;
 455	__u16		link_mode;
 456
 457	__u32		idle_timeout;
 458	__u16		sniff_min_interval;
 459	__u16		sniff_max_interval;
 460
 461	__u8		amp_status;
 462	__u32		amp_total_bw;
 463	__u32		amp_max_bw;
 464	__u32		amp_min_latency;
 465	__u32		amp_max_pdu;
 466	__u8		amp_type;
 467	__u16		amp_pal_cap;
 468	__u16		amp_assoc_size;
 469	__u32		amp_max_flush_to;
 470	__u32		amp_be_flush_to;
 471
 472	struct amp_assoc	loc_assoc;
 473
 474	__u8		flow_ctl_mode;
 475
 476	unsigned int	auto_accept_delay;
 477
 478	unsigned long	quirks;
 479
 480	atomic_t	cmd_cnt;
 481	unsigned int	acl_cnt;
 482	unsigned int	sco_cnt;
 483	unsigned int	le_cnt;
 484	unsigned int	iso_cnt;
 485
 486	unsigned int	acl_mtu;
 487	unsigned int	sco_mtu;
 488	unsigned int	le_mtu;
 489	unsigned int	iso_mtu;
 490	unsigned int	acl_pkts;
 491	unsigned int	sco_pkts;
 492	unsigned int	le_pkts;
 493	unsigned int	iso_pkts;
 494
 495	__u16		block_len;
 496	__u16		block_mtu;
 497	__u16		num_blocks;
 498	__u16		block_cnt;
 499
 500	unsigned long	acl_last_tx;
 501	unsigned long	sco_last_tx;
 502	unsigned long	le_last_tx;
 503
 504	__u8		le_tx_def_phys;
 505	__u8		le_rx_def_phys;
 506
 507	struct workqueue_struct	*workqueue;
 508	struct workqueue_struct	*req_workqueue;
 509
 510	struct work_struct	power_on;
 511	struct delayed_work	power_off;
 512	struct work_struct	error_reset;
 513	struct work_struct	cmd_sync_work;
 514	struct list_head	cmd_sync_work_list;
 515	struct mutex		cmd_sync_work_lock;
 
 516	struct work_struct	cmd_sync_cancel_work;
 517	struct work_struct	reenable_adv_work;
 518
 519	__u16			discov_timeout;
 520	struct delayed_work	discov_off;
 521
 522	struct delayed_work	service_cache;
 523
 524	struct delayed_work	cmd_timer;
 525	struct delayed_work	ncmd_timer;
 526
 527	struct work_struct	rx_work;
 528	struct work_struct	cmd_work;
 529	struct work_struct	tx_work;
 530
 531	struct delayed_work	le_scan_disable;
 532	struct delayed_work	le_scan_restart;
 533
 534	struct sk_buff_head	rx_q;
 535	struct sk_buff_head	raw_q;
 536	struct sk_buff_head	cmd_q;
 537
 538	struct sk_buff		*sent_cmd;
 539	struct sk_buff		*recv_event;
 540
 541	struct mutex		req_lock;
 542	wait_queue_head_t	req_wait_q;
 543	__u32			req_status;
 544	__u32			req_result;
 545	struct sk_buff		*req_skb;
 546
 547	void			*smp_data;
 548	void			*smp_bredr_data;
 549
 550	struct discovery_state	discovery;
 551
 552	int			discovery_old_state;
 553	bool			discovery_paused;
 554	int			advertising_old_state;
 555	bool			advertising_paused;
 556
 557	struct notifier_block	suspend_notifier;
 558	enum suspended_state	suspend_state_next;
 559	enum suspended_state	suspend_state;
 560	bool			scanning_paused;
 561	bool			suspended;
 562	u8			wake_reason;
 563	bdaddr_t		wake_addr;
 564	u8			wake_addr_type;
 565
 566	struct hci_conn_hash	conn_hash;
 567
 568	struct list_head	mesh_pending;
 569	struct list_head	mgmt_pending;
 570	struct list_head	reject_list;
 571	struct list_head	accept_list;
 572	struct list_head	uuids;
 573	struct list_head	link_keys;
 574	struct list_head	long_term_keys;
 575	struct list_head	identity_resolving_keys;
 576	struct list_head	remote_oob_data;
 577	struct list_head	le_accept_list;
 578	struct list_head	le_resolv_list;
 579	struct list_head	le_conn_params;
 580	struct list_head	pend_le_conns;
 581	struct list_head	pend_le_reports;
 582	struct list_head	blocked_keys;
 583	struct list_head	local_codecs;
 584
 585	struct hci_dev_stats	stat;
 586
 587	atomic_t		promisc;
 588
 589	const char		*hw_info;
 590	const char		*fw_info;
 591	struct dentry		*debugfs;
 592
 
 
 593	struct device		dev;
 594
 595	struct rfkill		*rfkill;
 596
 597	DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
 598	hci_conn_flags_t	conn_flags;
 599
 600	__s8			adv_tx_power;
 601	__u8			adv_data[HCI_MAX_EXT_AD_LENGTH];
 602	__u8			adv_data_len;
 603	__u8			scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
 604	__u8			scan_rsp_data_len;
 605	__u8			per_adv_data[HCI_MAX_PER_AD_LENGTH];
 606	__u8			per_adv_data_len;
 607
 608	struct list_head	adv_instances;
 609	unsigned int		adv_instance_cnt;
 610	__u8			cur_adv_instance;
 611	__u16			adv_instance_timeout;
 612	struct delayed_work	adv_instance_expire;
 613
 614	struct idr		adv_monitors_idr;
 615	unsigned int		adv_monitors_cnt;
 616
 617	__u8			irk[16];
 618	__u32			rpa_timeout;
 619	struct delayed_work	rpa_expired;
 620	bdaddr_t		rpa;
 621
 622	struct delayed_work	mesh_send_done;
 623
 624	enum {
 625		INTERLEAVE_SCAN_NONE,
 626		INTERLEAVE_SCAN_NO_FILTER,
 627		INTERLEAVE_SCAN_ALLOWLIST
 628	} interleave_scan_state;
 629
 630	struct delayed_work	interleave_scan;
 631
 632	struct list_head	monitored_devices;
 633	bool			advmon_pend_notify;
 634
 635#if IS_ENABLED(CONFIG_BT_LEDS)
 636	struct led_trigger	*power_led;
 637#endif
 638
 639#if IS_ENABLED(CONFIG_BT_MSFTEXT)
 640	__u16			msft_opcode;
 641	void			*msft_data;
 642	bool			msft_curve_validity;
 643#endif
 644
 645#if IS_ENABLED(CONFIG_BT_AOSPEXT)
 646	bool			aosp_capable;
 647	bool			aosp_quality_report;
 648#endif
 649
 650	int (*open)(struct hci_dev *hdev);
 651	int (*close)(struct hci_dev *hdev);
 652	int (*flush)(struct hci_dev *hdev);
 653	int (*setup)(struct hci_dev *hdev);
 654	int (*shutdown)(struct hci_dev *hdev);
 655	int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 656	void (*notify)(struct hci_dev *hdev, unsigned int evt);
 657	void (*hw_error)(struct hci_dev *hdev, u8 code);
 658	int (*post_init)(struct hci_dev *hdev);
 659	int (*set_diag)(struct hci_dev *hdev, bool enable);
 660	int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 661	void (*cmd_timeout)(struct hci_dev *hdev);
 662	void (*reset)(struct hci_dev *hdev);
 663	bool (*wakeup)(struct hci_dev *hdev);
 664	int (*set_quality_report)(struct hci_dev *hdev, bool enable);
 665	int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
 666	int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
 667				     struct bt_codec *codec, __u8 *vnd_len,
 668				     __u8 **vnd_data);
 669};
 670
 671#define HCI_PHY_HANDLE(handle)	(handle & 0xff)
 672
 673enum conn_reasons {
 674	CONN_REASON_PAIR_DEVICE,
 675	CONN_REASON_L2CAP_CHAN,
 676	CONN_REASON_SCO_CONNECT,
 677	CONN_REASON_ISO_CONNECT,
 678};
 679
 680struct hci_conn {
 681	struct list_head list;
 682
 683	atomic_t	refcnt;
 684
 685	bdaddr_t	dst;
 686	__u8		dst_type;
 687	bdaddr_t	src;
 688	__u8		src_type;
 689	bdaddr_t	init_addr;
 690	__u8		init_addr_type;
 691	bdaddr_t	resp_addr;
 692	__u8		resp_addr_type;
 693	__u8		adv_instance;
 694	__u16		handle;
 695	__u16		sync_handle;
 696	__u16		state;
 697	__u8		mode;
 698	__u8		type;
 699	__u8		role;
 700	bool		out;
 701	__u8		attempt;
 702	__u8		dev_class[3];
 703	__u8		features[HCI_MAX_PAGES][8];
 704	__u16		pkt_type;
 705	__u16		link_policy;
 706	__u8		key_type;
 707	__u8		auth_type;
 708	__u8		sec_level;
 709	__u8		pending_sec_level;
 710	__u8		pin_length;
 711	__u8		enc_key_size;
 712	__u8		io_capability;
 713	__u32		passkey_notify;
 714	__u8		passkey_entered;
 715	__u16		disc_timeout;
 716	__u16		conn_timeout;
 717	__u16		setting;
 718	__u16		auth_payload_timeout;
 719	__u16		le_conn_min_interval;
 720	__u16		le_conn_max_interval;
 721	__u16		le_conn_interval;
 722	__u16		le_conn_latency;
 723	__u16		le_supv_timeout;
 724	__u8		le_adv_data[HCI_MAX_AD_LENGTH];
 725	__u8		le_adv_data_len;
 726	__u8		le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
 727	__u8		le_per_adv_data_len;
 728	__u8		le_tx_phy;
 729	__u8		le_rx_phy;
 730	__s8		rssi;
 731	__s8		tx_power;
 732	__s8		max_tx_power;
 733	struct bt_iso_qos iso_qos;
 734	unsigned long	flags;
 735
 736	enum conn_reasons conn_reason;
 
 737
 738	__u32		clock;
 739	__u16		clock_accuracy;
 740
 741	unsigned long	conn_info_timestamp;
 742
 743	__u8		remote_cap;
 744	__u8		remote_auth;
 745	__u8		remote_id;
 746
 747	unsigned int	sent;
 748
 749	struct sk_buff_head data_q;
 750	struct list_head chan_list;
 751
 752	struct delayed_work disc_work;
 753	struct delayed_work auto_accept_work;
 754	struct delayed_work idle_work;
 755	struct delayed_work le_conn_timeout;
 756	struct work_struct  le_scan_cleanup;
 757
 758	struct device	dev;
 759	struct dentry	*debugfs;
 760
 761	struct hci_dev	*hdev;
 762	void		*l2cap_data;
 763	void		*sco_data;
 764	void		*iso_data;
 765	struct amp_mgr	*amp_mgr;
 766
 767	struct hci_conn	*link;
 
 
 
 768	struct bt_codec codec;
 769
 770	void (*connect_cfm_cb)	(struct hci_conn *conn, u8 status);
 771	void (*security_cfm_cb)	(struct hci_conn *conn, u8 status);
 772	void (*disconn_cfm_cb)	(struct hci_conn *conn, u8 reason);
 773
 774	void (*cleanup)(struct hci_conn *conn);
 775};
 776
 
 
 
 
 
 777struct hci_chan {
 778	struct list_head list;
 779	__u16 handle;
 780	struct hci_conn *conn;
 781	struct sk_buff_head data_q;
 782	unsigned int	sent;
 783	__u8		state;
 784	bool		amp;
 785};
 786
 787struct hci_conn_params {
 788	struct list_head list;
 789	struct list_head action;
 790
 791	bdaddr_t addr;
 792	u8 addr_type;
 793
 794	u16 conn_min_interval;
 795	u16 conn_max_interval;
 796	u16 conn_latency;
 797	u16 supervision_timeout;
 798
 799	enum {
 800		HCI_AUTO_CONN_DISABLED,
 801		HCI_AUTO_CONN_REPORT,
 802		HCI_AUTO_CONN_DIRECT,
 803		HCI_AUTO_CONN_ALWAYS,
 804		HCI_AUTO_CONN_LINK_LOSS,
 805		HCI_AUTO_CONN_EXPLICIT,
 806	} auto_connect;
 807
 808	struct hci_conn *conn;
 809	bool explicit_connect;
 
 810	hci_conn_flags_t flags;
 811	u8  privacy_mode;
 812};
 813
 814extern struct list_head hci_dev_list;
 815extern struct list_head hci_cb_list;
 816extern rwlock_t hci_dev_list_lock;
 817extern struct mutex hci_cb_list_lock;
 818
 819#define hci_dev_set_flag(hdev, nr)             set_bit((nr), (hdev)->dev_flags)
 820#define hci_dev_clear_flag(hdev, nr)           clear_bit((nr), (hdev)->dev_flags)
 821#define hci_dev_change_flag(hdev, nr)          change_bit((nr), (hdev)->dev_flags)
 822#define hci_dev_test_flag(hdev, nr)            test_bit((nr), (hdev)->dev_flags)
 823#define hci_dev_test_and_set_flag(hdev, nr)    test_and_set_bit((nr), (hdev)->dev_flags)
 824#define hci_dev_test_and_clear_flag(hdev, nr)  test_and_clear_bit((nr), (hdev)->dev_flags)
 825#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
 826
 827#define hci_dev_clear_volatile_flags(hdev)			\
 828	do {							\
 829		hci_dev_clear_flag(hdev, HCI_LE_SCAN);		\
 830		hci_dev_clear_flag(hdev, HCI_LE_ADV);		\
 831		hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
 832		hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);	\
 833		hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT);	\
 834	} while (0)
 835
 836#define hci_dev_le_state_simultaneous(hdev) \
 837	(test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
 838	 (hdev->le_states[4] & 0x08) &&	/* Central */ \
 839	 (hdev->le_states[4] & 0x40) &&	/* Peripheral */ \
 840	 (hdev->le_states[3] & 0x10))	/* Simultaneous */
 841
 842/* ----- HCI interface to upper protocols ----- */
 843int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 844int l2cap_disconn_ind(struct hci_conn *hcon);
 845void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 846
 847#if IS_ENABLED(CONFIG_BT_BREDR)
 848int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 849void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 850#else
 851static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 852				  __u8 *flags)
 853{
 854	return 0;
 855}
 856
 857static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
 858{
 859}
 860#endif
 861
 862#if IS_ENABLED(CONFIG_BT_LE)
 863int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 864void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 865#else
 866static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 867				  __u8 *flags)
 868{
 869	return 0;
 870}
 871static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
 872			    u16 flags)
 873{
 874}
 875#endif
 876
 877/* ----- Inquiry cache ----- */
 878#define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 879#define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 880
 881static inline void discovery_init(struct hci_dev *hdev)
 882{
 883	hdev->discovery.state = DISCOVERY_STOPPED;
 884	INIT_LIST_HEAD(&hdev->discovery.all);
 885	INIT_LIST_HEAD(&hdev->discovery.unknown);
 886	INIT_LIST_HEAD(&hdev->discovery.resolve);
 887	hdev->discovery.report_invalid_rssi = true;
 888	hdev->discovery.rssi = HCI_RSSI_INVALID;
 889}
 890
 891static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 892{
 893	hdev->discovery.result_filtering = false;
 894	hdev->discovery.report_invalid_rssi = true;
 895	hdev->discovery.rssi = HCI_RSSI_INVALID;
 896	hdev->discovery.uuid_count = 0;
 897	kfree(hdev->discovery.uuids);
 898	hdev->discovery.uuids = NULL;
 899	hdev->discovery.scan_start = 0;
 900	hdev->discovery.scan_duration = 0;
 901}
 902
 903bool hci_discovery_active(struct hci_dev *hdev);
 904
 905void hci_discovery_set_state(struct hci_dev *hdev, int state);
 906
 907static inline int inquiry_cache_empty(struct hci_dev *hdev)
 908{
 909	return list_empty(&hdev->discovery.all);
 910}
 911
 912static inline long inquiry_cache_age(struct hci_dev *hdev)
 913{
 914	struct discovery_state *c = &hdev->discovery;
 915	return jiffies - c->timestamp;
 916}
 917
 918static inline long inquiry_entry_age(struct inquiry_entry *e)
 919{
 920	return jiffies - e->timestamp;
 921}
 922
 923struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 924					       bdaddr_t *bdaddr);
 925struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 926						       bdaddr_t *bdaddr);
 927struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 928						       bdaddr_t *bdaddr,
 929						       int state);
 930void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 931				      struct inquiry_entry *ie);
 932u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 933			     bool name_known);
 934void hci_inquiry_cache_flush(struct hci_dev *hdev);
 935
 936/* ----- HCI Connections ----- */
 937enum {
 938	HCI_CONN_AUTH_PEND,
 939	HCI_CONN_REAUTH_PEND,
 940	HCI_CONN_ENCRYPT_PEND,
 941	HCI_CONN_RSWITCH_PEND,
 942	HCI_CONN_MODE_CHANGE_PEND,
 943	HCI_CONN_SCO_SETUP_PEND,
 944	HCI_CONN_MGMT_CONNECTED,
 945	HCI_CONN_SSP_ENABLED,
 946	HCI_CONN_SC_ENABLED,
 947	HCI_CONN_AES_CCM,
 948	HCI_CONN_POWER_SAVE,
 949	HCI_CONN_FLUSH_KEY,
 950	HCI_CONN_ENCRYPT,
 951	HCI_CONN_AUTH,
 952	HCI_CONN_SECURE,
 953	HCI_CONN_FIPS,
 954	HCI_CONN_STK_ENCRYPT,
 955	HCI_CONN_AUTH_INITIATOR,
 956	HCI_CONN_DROP,
 
 957	HCI_CONN_PARAM_REMOVAL_PEND,
 958	HCI_CONN_NEW_LINK_KEY,
 959	HCI_CONN_SCANNING,
 960	HCI_CONN_AUTH_FAILURE,
 961	HCI_CONN_PER_ADV,
 
 
 
 
 
 
 962};
 963
 964static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 965{
 966	struct hci_dev *hdev = conn->hdev;
 967	return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
 968	       test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 969}
 970
 971static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
 972{
 973	struct hci_dev *hdev = conn->hdev;
 974	return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
 975	       test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
 976}
 977
 978static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 979{
 980	struct hci_conn_hash *h = &hdev->conn_hash;
 981	list_add_rcu(&c->list, &h->list);
 982	switch (c->type) {
 983	case ACL_LINK:
 984		h->acl_num++;
 985		break;
 986	case AMP_LINK:
 987		h->amp_num++;
 988		break;
 989	case LE_LINK:
 990		h->le_num++;
 991		if (c->role == HCI_ROLE_SLAVE)
 992			h->le_num_peripheral++;
 993		break;
 994	case SCO_LINK:
 995	case ESCO_LINK:
 996		h->sco_num++;
 997		break;
 998	case ISO_LINK:
 999		h->iso_num++;
1000		break;
1001	}
1002}
1003
1004static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1005{
1006	struct hci_conn_hash *h = &hdev->conn_hash;
1007
1008	list_del_rcu(&c->list);
1009	synchronize_rcu();
1010
1011	switch (c->type) {
1012	case ACL_LINK:
1013		h->acl_num--;
1014		break;
1015	case AMP_LINK:
1016		h->amp_num--;
1017		break;
1018	case LE_LINK:
1019		h->le_num--;
1020		if (c->role == HCI_ROLE_SLAVE)
1021			h->le_num_peripheral--;
1022		break;
1023	case SCO_LINK:
1024	case ESCO_LINK:
1025		h->sco_num--;
1026		break;
1027	case ISO_LINK:
1028		h->iso_num--;
1029		break;
1030	}
1031}
1032
1033static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1034{
1035	struct hci_conn_hash *h = &hdev->conn_hash;
1036	switch (type) {
1037	case ACL_LINK:
1038		return h->acl_num;
1039	case AMP_LINK:
1040		return h->amp_num;
1041	case LE_LINK:
1042		return h->le_num;
1043	case SCO_LINK:
1044	case ESCO_LINK:
1045		return h->sco_num;
1046	case ISO_LINK:
1047		return h->iso_num;
1048	default:
1049		return 0;
1050	}
1051}
1052
1053static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1054{
1055	struct hci_conn_hash *c = &hdev->conn_hash;
1056
1057	return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1058}
1059
1060static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1061{
1062	struct hci_conn_hash *h = &hdev->conn_hash;
1063	struct hci_conn *c;
1064	__u8 type = INVALID_LINK;
1065
1066	rcu_read_lock();
1067
1068	list_for_each_entry_rcu(c, &h->list, list) {
1069		if (c->handle == handle) {
1070			type = c->type;
1071			break;
1072		}
1073	}
1074
1075	rcu_read_unlock();
1076
1077	return type;
1078}
1079
1080static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1081							bdaddr_t *ba,
1082							__u8 big, __u8 bis)
1083{
1084	struct hci_conn_hash *h = &hdev->conn_hash;
1085	struct hci_conn  *c;
1086
1087	rcu_read_lock();
1088
1089	list_for_each_entry_rcu(c, &h->list, list) {
1090		if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1091			continue;
1092
1093		if (c->iso_qos.big == big && c->iso_qos.bis == bis) {
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1094			rcu_read_unlock();
1095			return c;
1096		}
1097	}
1098	rcu_read_unlock();
1099
1100	return NULL;
1101}
1102
1103static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1104								__u16 handle)
1105{
1106	struct hci_conn_hash *h = &hdev->conn_hash;
1107	struct hci_conn  *c;
1108
1109	rcu_read_lock();
1110
1111	list_for_each_entry_rcu(c, &h->list, list) {
1112		if (c->handle == handle) {
1113			rcu_read_unlock();
1114			return c;
1115		}
1116	}
1117	rcu_read_unlock();
1118
1119	return NULL;
1120}
1121
1122static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1123							__u8 type, bdaddr_t *ba)
1124{
1125	struct hci_conn_hash *h = &hdev->conn_hash;
1126	struct hci_conn  *c;
1127
1128	rcu_read_lock();
1129
1130	list_for_each_entry_rcu(c, &h->list, list) {
1131		if (c->type == type && !bacmp(&c->dst, ba)) {
1132			rcu_read_unlock();
1133			return c;
1134		}
1135	}
1136
1137	rcu_read_unlock();
1138
1139	return NULL;
1140}
1141
1142static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1143						       bdaddr_t *ba,
1144						       __u8 ba_type)
1145{
1146	struct hci_conn_hash *h = &hdev->conn_hash;
1147	struct hci_conn  *c;
1148
1149	rcu_read_lock();
1150
1151	list_for_each_entry_rcu(c, &h->list, list) {
1152		if (c->type != LE_LINK)
1153		       continue;
1154
1155		if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1156			rcu_read_unlock();
1157			return c;
1158		}
1159	}
1160
1161	rcu_read_unlock();
1162
1163	return NULL;
1164}
1165
1166static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1167							bdaddr_t *ba,
1168							__u8 ba_type)
 
 
1169{
1170	struct hci_conn_hash *h = &hdev->conn_hash;
1171	struct hci_conn  *c;
1172
1173	rcu_read_lock();
1174
1175	list_for_each_entry_rcu(c, &h->list, list) {
1176		if (c->type != ISO_LINK)
1177			continue;
1178
1179		if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
 
 
 
 
 
 
 
 
 
1180			rcu_read_unlock();
1181			return c;
1182		}
1183	}
1184
1185	rcu_read_unlock();
1186
1187	return NULL;
1188}
1189
1190static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1191							__u8 handle)
1192{
1193	struct hci_conn_hash *h = &hdev->conn_hash;
1194	struct hci_conn  *c;
1195
1196	rcu_read_lock();
1197
1198	list_for_each_entry_rcu(c, &h->list, list) {
1199		if (c->type != ISO_LINK)
1200			continue;
1201
1202		if (handle == c->iso_qos.cig) {
1203			rcu_read_unlock();
1204			return c;
1205		}
1206	}
1207
1208	rcu_read_unlock();
1209
1210	return NULL;
1211}
1212
1213static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1214							__u8 handle)
1215{
1216	struct hci_conn_hash *h = &hdev->conn_hash;
1217	struct hci_conn  *c;
1218
1219	rcu_read_lock();
1220
1221	list_for_each_entry_rcu(c, &h->list, list) {
1222		if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1223			continue;
1224
1225		if (handle == c->iso_qos.big) {
1226			rcu_read_unlock();
1227			return c;
1228		}
1229	}
1230
1231	rcu_read_unlock();
1232
1233	return NULL;
1234}
1235
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1236static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1237							__u8 type, __u16 state)
1238{
1239	struct hci_conn_hash *h = &hdev->conn_hash;
1240	struct hci_conn  *c;
1241
1242	rcu_read_lock();
1243
1244	list_for_each_entry_rcu(c, &h->list, list) {
1245		if (c->type == type && c->state == state) {
1246			rcu_read_unlock();
1247			return c;
1248		}
1249	}
1250
1251	rcu_read_unlock();
1252
1253	return NULL;
1254}
1255
1256typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1257static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1258					    hci_conn_func_t func, __u8 type,
1259					    __u16 state, void *data)
1260{
1261	struct hci_conn_hash *h = &hdev->conn_hash;
1262	struct hci_conn  *c;
1263
1264	if (!func)
1265		return;
1266
1267	rcu_read_lock();
1268
1269	list_for_each_entry_rcu(c, &h->list, list) {
1270		if (c->type == type && c->state == state)
1271			func(c, data);
1272	}
1273
1274	rcu_read_unlock();
1275}
1276
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1277static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1278{
1279	struct hci_conn_hash *h = &hdev->conn_hash;
1280	struct hci_conn  *c;
1281
1282	rcu_read_lock();
1283
1284	list_for_each_entry_rcu(c, &h->list, list) {
1285		if (c->type == LE_LINK && c->state == BT_CONNECT &&
1286		    !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1287			rcu_read_unlock();
1288			return c;
1289		}
1290	}
1291
1292	rcu_read_unlock();
1293
1294	return NULL;
1295}
1296
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1297int hci_disconnect(struct hci_conn *conn, __u8 reason);
1298bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1299void hci_sco_setup(struct hci_conn *conn, __u8 status);
1300bool hci_iso_setup_path(struct hci_conn *conn);
1301int hci_le_create_cis(struct hci_conn *conn);
 
1302
1303struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1304			      u8 role);
1305int hci_conn_del(struct hci_conn *conn);
 
 
1306void hci_conn_hash_flush(struct hci_dev *hdev);
1307void hci_conn_check_pending(struct hci_dev *hdev);
1308
1309struct hci_chan *hci_chan_create(struct hci_conn *conn);
1310void hci_chan_del(struct hci_chan *chan);
1311void hci_chan_list_flush(struct hci_conn *conn);
1312struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1313
1314struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1315				     u8 dst_type, u8 sec_level,
1316				     u16 conn_timeout,
1317				     enum conn_reasons conn_reason);
1318struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1319				u8 dst_type, bool dst_resolved, u8 sec_level,
1320				u16 conn_timeout, u8 role);
1321struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1322				 u8 sec_level, u8 auth_type,
1323				 enum conn_reasons conn_reason);
1324struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1325				 __u16 setting, struct bt_codec *codec);
1326struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1327			      __u8 dst_type, struct bt_iso_qos *qos);
 
 
 
1328struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1329				 __u8 dst_type, struct bt_iso_qos *qos);
1330struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1331				 __u8 dst_type, struct bt_iso_qos *qos,
1332				 __u8 data_len, __u8 *data);
1333int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1334		       __u8 sid);
1335int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos,
 
1336			   __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1337int hci_conn_check_link_mode(struct hci_conn *conn);
1338int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1339int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1340		      bool initiator);
1341int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1342
1343void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1344
1345void hci_conn_failed(struct hci_conn *conn, u8 status);
 
1346
1347/*
1348 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1349 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1350 * working or anything else. They just guarantee that the object is available
1351 * and can be dereferenced. So you can use its locks, local variables and any
1352 * other constant data.
1353 * Before accessing runtime data, you _must_ lock the object and then check that
1354 * it is still running. As soon as you release the locks, the connection might
1355 * get dropped, though.
1356 *
1357 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1358 * how long the underlying connection is held. So every channel that runs on the
1359 * hci_conn object calls this to prevent the connection from disappearing. As
1360 * long as you hold a device, you must also guarantee that you have a valid
1361 * reference to the device via hci_conn_get() (or the initial reference from
1362 * hci_conn_add()).
1363 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1364 * break because nobody cares for that. But this means, we cannot use
1365 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1366 */
1367
1368static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1369{
1370	get_device(&conn->dev);
1371	return conn;
1372}
1373
1374static inline void hci_conn_put(struct hci_conn *conn)
1375{
1376	put_device(&conn->dev);
1377}
1378
1379static inline void hci_conn_hold(struct hci_conn *conn)
1380{
1381	BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1382
1383	atomic_inc(&conn->refcnt);
1384	cancel_delayed_work(&conn->disc_work);
 
 
1385}
1386
1387static inline void hci_conn_drop(struct hci_conn *conn)
1388{
1389	BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1390
1391	if (atomic_dec_and_test(&conn->refcnt)) {
1392		unsigned long timeo;
1393
1394		switch (conn->type) {
1395		case ACL_LINK:
1396		case LE_LINK:
1397			cancel_delayed_work(&conn->idle_work);
1398			if (conn->state == BT_CONNECTED) {
1399				timeo = conn->disc_timeout;
1400				if (!conn->out)
1401					timeo *= 2;
1402			} else {
1403				timeo = 0;
1404			}
1405			break;
1406
1407		case AMP_LINK:
1408			timeo = conn->disc_timeout;
1409			break;
1410
1411		default:
1412			timeo = 0;
1413			break;
1414		}
1415
1416		cancel_delayed_work(&conn->disc_work);
1417		queue_delayed_work(conn->hdev->workqueue,
1418				   &conn->disc_work, timeo);
1419	}
1420}
1421
1422/* ----- HCI Devices ----- */
1423static inline void hci_dev_put(struct hci_dev *d)
1424{
1425	BT_DBG("%s orig refcnt %d", d->name,
1426	       kref_read(&d->dev.kobj.kref));
1427
1428	put_device(&d->dev);
1429}
1430
1431static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1432{
1433	BT_DBG("%s orig refcnt %d", d->name,
1434	       kref_read(&d->dev.kobj.kref));
1435
1436	get_device(&d->dev);
1437	return d;
1438}
1439
1440#define hci_dev_lock(d)		mutex_lock(&d->lock)
1441#define hci_dev_unlock(d)	mutex_unlock(&d->lock)
1442
1443#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1444#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1445
1446static inline void *hci_get_drvdata(struct hci_dev *hdev)
1447{
1448	return dev_get_drvdata(&hdev->dev);
1449}
1450
1451static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1452{
1453	dev_set_drvdata(&hdev->dev, data);
1454}
1455
1456static inline void *hci_get_priv(struct hci_dev *hdev)
1457{
1458	return (char *)hdev + sizeof(*hdev);
1459}
1460
1461struct hci_dev *hci_dev_get(int index);
1462struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1463
1464struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1465
1466static inline struct hci_dev *hci_alloc_dev(void)
1467{
1468	return hci_alloc_dev_priv(0);
1469}
1470
1471void hci_free_dev(struct hci_dev *hdev);
1472int hci_register_dev(struct hci_dev *hdev);
1473void hci_unregister_dev(struct hci_dev *hdev);
1474void hci_release_dev(struct hci_dev *hdev);
1475int hci_register_suspend_notifier(struct hci_dev *hdev);
1476int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1477int hci_suspend_dev(struct hci_dev *hdev);
1478int hci_resume_dev(struct hci_dev *hdev);
1479int hci_reset_dev(struct hci_dev *hdev);
1480int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1481int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1482__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1483__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1484
1485static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1486{
1487#if IS_ENABLED(CONFIG_BT_MSFTEXT)
1488	hdev->msft_opcode = opcode;
1489#endif
1490}
1491
1492static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1493{
1494#if IS_ENABLED(CONFIG_BT_AOSPEXT)
1495	hdev->aosp_capable = true;
1496#endif
1497}
1498
 
 
 
 
 
 
 
 
 
1499int hci_dev_open(__u16 dev);
1500int hci_dev_close(__u16 dev);
1501int hci_dev_do_close(struct hci_dev *hdev);
1502int hci_dev_reset(__u16 dev);
1503int hci_dev_reset_stat(__u16 dev);
1504int hci_dev_cmd(unsigned int cmd, void __user *arg);
1505int hci_get_dev_list(void __user *arg);
1506int hci_get_dev_info(void __user *arg);
1507int hci_get_conn_list(void __user *arg);
1508int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1509int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1510int hci_inquiry(void __user *arg);
1511
1512struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1513					   bdaddr_t *bdaddr, u8 type);
1514struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1515				    struct list_head *list, bdaddr_t *bdaddr,
1516				    u8 type);
1517struct bdaddr_list_with_flags *
1518hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1519				  u8 type);
1520int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1521int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1522				 u8 type, u8 *peer_irk, u8 *local_irk);
1523int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1524				   u8 type, u32 flags);
1525int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1526int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1527				 u8 type);
1528int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1529				   u8 type);
1530void hci_bdaddr_list_clear(struct list_head *list);
1531
1532struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1533					       bdaddr_t *addr, u8 addr_type);
1534struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1535					    bdaddr_t *addr, u8 addr_type);
1536void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1537void hci_conn_params_clear_disabled(struct hci_dev *hdev);
 
1538
 
 
 
1539struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1540						  bdaddr_t *addr,
1541						  u8 addr_type);
1542
1543void hci_uuids_clear(struct hci_dev *hdev);
1544
1545void hci_link_keys_clear(struct hci_dev *hdev);
1546struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1547struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1548				  bdaddr_t *bdaddr, u8 *val, u8 type,
1549				  u8 pin_len, bool *persistent);
1550struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1551			    u8 addr_type, u8 type, u8 authenticated,
1552			    u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1553struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1554			     u8 addr_type, u8 role);
1555int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1556void hci_smp_ltks_clear(struct hci_dev *hdev);
1557int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1558
1559struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1560struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1561				     u8 addr_type);
1562struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1563			    u8 addr_type, u8 val[16], bdaddr_t *rpa);
1564void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1565bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1566void hci_blocked_keys_clear(struct hci_dev *hdev);
1567void hci_smp_irks_clear(struct hci_dev *hdev);
1568
1569bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1570
1571void hci_remote_oob_data_clear(struct hci_dev *hdev);
1572struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1573					  bdaddr_t *bdaddr, u8 bdaddr_type);
1574int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1575			    u8 bdaddr_type, u8 *hash192, u8 *rand192,
1576			    u8 *hash256, u8 *rand256);
1577int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1578			       u8 bdaddr_type);
1579
1580void hci_adv_instances_clear(struct hci_dev *hdev);
1581struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1582struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1583struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1584				      u32 flags, u16 adv_data_len, u8 *adv_data,
1585				      u16 scan_rsp_len, u8 *scan_rsp_data,
1586				      u16 timeout, u16 duration, s8 tx_power,
1587				      u32 min_interval, u32 max_interval,
1588				      u8 mesh_handle);
1589struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1590				      u32 flags, u8 data_len, u8 *data,
1591				      u32 min_interval, u32 max_interval);
1592int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1593			 u16 adv_data_len, u8 *adv_data,
1594			 u16 scan_rsp_len, u8 *scan_rsp_data);
1595int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1596void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1597u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1598bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1599
1600void hci_adv_monitors_clear(struct hci_dev *hdev);
1601void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1602int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1603int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1604int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1605bool hci_is_adv_monitoring(struct hci_dev *hdev);
1606int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1607
1608void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1609
1610void hci_init_sysfs(struct hci_dev *hdev);
1611void hci_conn_init_sysfs(struct hci_conn *conn);
1612void hci_conn_add_sysfs(struct hci_conn *conn);
1613void hci_conn_del_sysfs(struct hci_conn *conn);
1614
1615#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 
1616
1617/* ----- LMP capabilities ----- */
1618#define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
1619#define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
1620#define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
1621#define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
1622#define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
1623#define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
1624#define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
1625#define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
1626#define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
1627#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1628#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1629#define lmp_esco_2m_capable(dev)   ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1630#define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
1631#define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1632#define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1633#define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1634#define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1635#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1636#define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1637#define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1638#define lmp_edr_2m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_2M)
1639#define lmp_edr_3m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_3M)
1640#define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1641#define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1642
1643/* ----- Extended LMP capabilities ----- */
1644#define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1645#define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1646#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1647#define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1648#define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1649#define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1650
1651/* ----- Host capabilities ----- */
1652#define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1653#define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1654#define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1655#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1656
1657#define hdev_is_powered(dev)   (test_bit(HCI_UP, &(dev)->flags) && \
1658				!hci_dev_test_flag(dev, HCI_AUTO_OFF))
1659#define bredr_sc_enabled(dev)  (lmp_sc_capable(dev) && \
1660				hci_dev_test_flag(dev, HCI_SC_ENABLED))
1661#define rpa_valid(dev)         (bacmp(&dev->rpa, BDADDR_ANY) && \
1662				!hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1663#define adv_rpa_valid(adv)     (bacmp(&adv->random_addr, BDADDR_ANY) && \
1664				!adv->rpa_expired)
1665
1666#define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1667		      ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1668
 
 
1669#define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1670		      ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1671
 
 
 
 
1672#define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1673			 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1674
1675#define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1676
1677/* Use LL Privacy based address resolution if supported */
1678#define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1679			     hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1680
1681#define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1682				   (hdev->commands[39] & 0x04))
1683
1684/* Use enhanced synchronous connection if command is supported and its quirk
1685 * has not been set.
1686 */
1687#define enhanced_sync_conn_capable(dev) \
1688	(((dev)->commands[29] & 0x08) && \
1689	 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1690
1691/* Use ext scanning if set ext scan param and ext scan enable is supported */
1692#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1693			   ((dev)->commands[37] & 0x40) && \
1694			   !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1695
1696/* Use ext create connection if command is supported */
1697#define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1698
1699/* Extended advertising support */
1700#define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1701
 
 
 
 
1702/* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1703 *
1704 * C24: Mandatory if the LE Controller supports Connection State and either
1705 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1706 */
1707#define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1708					 ext_adv_capable(dev))
1709
1710/* Periodic advertising support */
1711#define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1712
1713/* CIS Master/Slave and BIS support */
1714#define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1715#define cis_capable(dev) \
1716	(cis_central_capable(dev) || cis_peripheral_capable(dev))
1717#define cis_central_capable(dev) \
1718	((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1719#define cis_peripheral_capable(dev) \
1720	((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1721#define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
 
1722
1723#define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1724	(!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1725
1726/* ----- HCI protocols ----- */
1727#define HCI_PROTO_DEFER             0x01
1728
1729static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1730					__u8 type, __u8 *flags)
1731{
1732	switch (type) {
1733	case ACL_LINK:
1734		return l2cap_connect_ind(hdev, bdaddr);
1735
1736	case SCO_LINK:
1737	case ESCO_LINK:
1738		return sco_connect_ind(hdev, bdaddr, flags);
1739
1740	case ISO_LINK:
1741		return iso_connect_ind(hdev, bdaddr, flags);
1742
1743	default:
1744		BT_ERR("unknown link type %d", type);
1745		return -EINVAL;
1746	}
1747}
1748
1749static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1750{
1751	if (conn->type != ACL_LINK && conn->type != LE_LINK)
1752		return HCI_ERROR_REMOTE_USER_TERM;
1753
1754	return l2cap_disconn_ind(conn);
1755}
1756
1757/* ----- HCI callbacks ----- */
1758struct hci_cb {
1759	struct list_head list;
1760
1761	char *name;
1762
1763	void (*connect_cfm)	(struct hci_conn *conn, __u8 status);
1764	void (*disconn_cfm)	(struct hci_conn *conn, __u8 status);
1765	void (*security_cfm)	(struct hci_conn *conn, __u8 status,
1766								__u8 encrypt);
1767	void (*key_change_cfm)	(struct hci_conn *conn, __u8 status);
1768	void (*role_switch_cfm)	(struct hci_conn *conn, __u8 status, __u8 role);
1769};
1770
1771static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1772{
1773	struct hci_cb *cb;
1774
1775	mutex_lock(&hci_cb_list_lock);
1776	list_for_each_entry(cb, &hci_cb_list, list) {
1777		if (cb->connect_cfm)
1778			cb->connect_cfm(conn, status);
1779	}
1780	mutex_unlock(&hci_cb_list_lock);
1781
1782	if (conn->connect_cfm_cb)
1783		conn->connect_cfm_cb(conn, status);
1784}
1785
1786static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1787{
1788	struct hci_cb *cb;
1789
1790	mutex_lock(&hci_cb_list_lock);
1791	list_for_each_entry(cb, &hci_cb_list, list) {
1792		if (cb->disconn_cfm)
1793			cb->disconn_cfm(conn, reason);
1794	}
1795	mutex_unlock(&hci_cb_list_lock);
1796
1797	if (conn->disconn_cfm_cb)
1798		conn->disconn_cfm_cb(conn, reason);
1799}
1800
1801static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1802{
1803	struct hci_cb *cb;
1804	__u8 encrypt;
1805
1806	if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1807		return;
1808
1809	encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1810
1811	mutex_lock(&hci_cb_list_lock);
1812	list_for_each_entry(cb, &hci_cb_list, list) {
1813		if (cb->security_cfm)
1814			cb->security_cfm(conn, status, encrypt);
1815	}
1816	mutex_unlock(&hci_cb_list_lock);
1817
1818	if (conn->security_cfm_cb)
1819		conn->security_cfm_cb(conn, status);
1820}
1821
1822static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1823{
1824	struct hci_cb *cb;
1825	__u8 encrypt;
1826
1827	if (conn->state == BT_CONFIG) {
1828		if (!status)
1829			conn->state = BT_CONNECTED;
1830
1831		hci_connect_cfm(conn, status);
1832		hci_conn_drop(conn);
1833		return;
1834	}
1835
1836	if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1837		encrypt = 0x00;
1838	else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1839		encrypt = 0x02;
1840	else
1841		encrypt = 0x01;
1842
1843	if (!status) {
1844		if (conn->sec_level == BT_SECURITY_SDP)
1845			conn->sec_level = BT_SECURITY_LOW;
1846
1847		if (conn->pending_sec_level > conn->sec_level)
1848			conn->sec_level = conn->pending_sec_level;
1849	}
1850
1851	mutex_lock(&hci_cb_list_lock);
1852	list_for_each_entry(cb, &hci_cb_list, list) {
1853		if (cb->security_cfm)
1854			cb->security_cfm(conn, status, encrypt);
1855	}
1856	mutex_unlock(&hci_cb_list_lock);
1857
1858	if (conn->security_cfm_cb)
1859		conn->security_cfm_cb(conn, status);
1860}
1861
1862static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1863{
1864	struct hci_cb *cb;
1865
1866	mutex_lock(&hci_cb_list_lock);
1867	list_for_each_entry(cb, &hci_cb_list, list) {
1868		if (cb->key_change_cfm)
1869			cb->key_change_cfm(conn, status);
1870	}
1871	mutex_unlock(&hci_cb_list_lock);
1872}
1873
1874static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1875								__u8 role)
1876{
1877	struct hci_cb *cb;
1878
1879	mutex_lock(&hci_cb_list_lock);
1880	list_for_each_entry(cb, &hci_cb_list, list) {
1881		if (cb->role_switch_cfm)
1882			cb->role_switch_cfm(conn, status, role);
1883	}
1884	mutex_unlock(&hci_cb_list_lock);
1885}
1886
1887static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1888{
1889	if (addr_type != ADDR_LE_DEV_RANDOM)
1890		return false;
1891
1892	if ((bdaddr->b[5] & 0xc0) == 0x40)
1893	       return true;
1894
1895	return false;
1896}
1897
1898static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1899{
1900	if (addr_type == ADDR_LE_DEV_PUBLIC)
1901		return true;
1902
1903	/* Check for Random Static address type */
1904	if ((addr->b[5] & 0xc0) == 0xc0)
1905		return true;
1906
1907	return false;
1908}
1909
1910static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1911					  bdaddr_t *bdaddr, u8 addr_type)
1912{
1913	if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1914		return NULL;
1915
1916	return hci_find_irk_by_rpa(hdev, bdaddr);
1917}
1918
1919static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1920					u16 to_multiplier)
1921{
1922	u16 max_latency;
1923
1924	if (min > max || min < 6 || max > 3200)
1925		return -EINVAL;
1926
1927	if (to_multiplier < 10 || to_multiplier > 3200)
1928		return -EINVAL;
1929
1930	if (max >= to_multiplier * 8)
1931		return -EINVAL;
1932
1933	max_latency = (to_multiplier * 4 / max) - 1;
1934	if (latency > 499 || latency > max_latency)
1935		return -EINVAL;
1936
1937	return 0;
1938}
1939
1940int hci_register_cb(struct hci_cb *hcb);
1941int hci_unregister_cb(struct hci_cb *hcb);
1942
1943int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1944		   const void *param);
1945
1946int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1947		 const void *param);
1948void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1949void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1950void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
1951
1952void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1953void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
1954
1955u32 hci_conn_get_phy(struct hci_conn *conn);
1956
1957/* ----- HCI Sockets ----- */
1958void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1959void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1960			 int flag, struct sock *skip_sk);
1961void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1962void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1963				 void *data, u16 data_len, ktime_t tstamp,
1964				 int flag, struct sock *skip_sk);
1965
1966void hci_sock_dev_event(struct hci_dev *hdev, int event);
1967
1968#define HCI_MGMT_VAR_LEN	BIT(0)
1969#define HCI_MGMT_NO_HDEV	BIT(1)
1970#define HCI_MGMT_UNTRUSTED	BIT(2)
1971#define HCI_MGMT_UNCONFIGURED	BIT(3)
1972#define HCI_MGMT_HDEV_OPTIONAL	BIT(4)
1973
1974struct hci_mgmt_handler {
1975	int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1976		     u16 data_len);
1977	size_t data_len;
1978	unsigned long flags;
1979};
1980
1981struct hci_mgmt_chan {
1982	struct list_head list;
1983	unsigned short channel;
1984	size_t handler_count;
1985	const struct hci_mgmt_handler *handlers;
1986	void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1987};
1988
1989int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1990void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1991
1992/* Management interface */
1993#define DISCOV_TYPE_BREDR		(BIT(BDADDR_BREDR))
1994#define DISCOV_TYPE_LE			(BIT(BDADDR_LE_PUBLIC) | \
1995					 BIT(BDADDR_LE_RANDOM))
1996#define DISCOV_TYPE_INTERLEAVED		(BIT(BDADDR_BREDR) | \
1997					 BIT(BDADDR_LE_PUBLIC) | \
1998					 BIT(BDADDR_LE_RANDOM))
1999
2000/* These LE scan and inquiry parameters were chosen according to LE General
2001 * Discovery Procedure specification.
2002 */
2003#define DISCOV_LE_SCAN_WIN		0x12
2004#define DISCOV_LE_SCAN_INT		0x12
2005#define DISCOV_LE_TIMEOUT		10240	/* msec */
2006#define DISCOV_INTERLEAVED_TIMEOUT	5120	/* msec */
2007#define DISCOV_INTERLEAVED_INQUIRY_LEN	0x04
2008#define DISCOV_BREDR_INQUIRY_LEN	0x08
2009#define DISCOV_LE_RESTART_DELAY		msecs_to_jiffies(200)	/* msec */
2010#define DISCOV_LE_FAST_ADV_INT_MIN	0x00A0	/* 100 msec */
2011#define DISCOV_LE_FAST_ADV_INT_MAX	0x00F0	/* 150 msec */
2012#define DISCOV_LE_PER_ADV_INT_MIN	0x00A0	/* 200 msec */
2013#define DISCOV_LE_PER_ADV_INT_MAX	0x00A0	/* 200 msec */
2014#define DISCOV_LE_ADV_MESH_MIN		0x00A0  /* 100 msec */
2015#define DISCOV_LE_ADV_MESH_MAX		0x00A0  /* 100 msec */
2016#define INTERVAL_TO_MS(x)		(((x) * 10) / 0x10)
2017
2018#define NAME_RESOLVE_DURATION		msecs_to_jiffies(10240)	/* 10.24 sec */
2019
2020void mgmt_fill_version_info(void *ver);
2021int mgmt_new_settings(struct hci_dev *hdev);
2022void mgmt_index_added(struct hci_dev *hdev);
2023void mgmt_index_removed(struct hci_dev *hdev);
2024void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2025void mgmt_power_on(struct hci_dev *hdev, int err);
2026void __mgmt_power_off(struct hci_dev *hdev);
2027void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2028		       bool persistent);
2029void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2030			   u8 *name, u8 name_len);
2031void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2032			      u8 link_type, u8 addr_type, u8 reason,
2033			      bool mgmt_connected);
2034void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2035			    u8 link_type, u8 addr_type, u8 status);
2036void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2037			 u8 addr_type, u8 status);
2038void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2039void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2040				  u8 status);
2041void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2042				      u8 status);
2043int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2044			      u8 link_type, u8 addr_type, u32 value,
2045			      u8 confirm_hint);
2046int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2047				     u8 link_type, u8 addr_type, u8 status);
2048int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2049					 u8 link_type, u8 addr_type, u8 status);
2050int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2051			      u8 link_type, u8 addr_type);
2052int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2053				     u8 link_type, u8 addr_type, u8 status);
2054int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2055					 u8 link_type, u8 addr_type, u8 status);
2056int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2057			     u8 link_type, u8 addr_type, u32 passkey,
2058			     u8 entered);
2059void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2060void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2061void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2062				    u8 status);
2063void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2064void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2065void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2066void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2067		       u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2068		       u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2069		       u64 instant);
2070void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2071		      u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2072void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2073void mgmt_suspending(struct hci_dev *hdev, u8 state);
2074void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2075		   u8 addr_type);
2076bool mgmt_powering_down(struct hci_dev *hdev);
2077void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2078void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2079void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2080		   bool persistent);
2081void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2082			 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2083			 u16 max_interval, u16 latency, u16 timeout);
2084void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2085bool mgmt_get_connectable(struct hci_dev *hdev);
2086u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2087void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2088			    u8 instance);
2089void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2090			      u8 instance);
2091void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2092int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2093void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2094				  bdaddr_t *bdaddr, u8 addr_type);
2095
2096int hci_abort_conn(struct hci_conn *conn, u8 reason);
2097u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2098		      u16 to_multiplier);
2099void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2100		      __u8 ltk[16], __u8 key_size);
2101
2102void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2103			       u8 *bdaddr_type);
2104
2105#define SCO_AIRMODE_MASK       0x0003
2106#define SCO_AIRMODE_CVSD       0x0000
2107#define SCO_AIRMODE_TRANSP     0x0003
2108
2109#define LOCAL_CODEC_ACL_MASK	BIT(0)
2110#define LOCAL_CODEC_SCO_MASK	BIT(1)
2111
2112#define TRANSPORT_TYPE_MAX	0x04
2113
2114#endif /* __HCI_CORE_H */