path: root/include/net/bluetooth/hci_core.h

/*
   BlueZ - Bluetooth protocol stack for Linux
   Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.

   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 as
   published by the Free Software Foundation;

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
   SOFTWARE IS DISCLAIMED.
*/

#ifndef __HCI_CORE_H
#define __HCI_CORE_H

#include <linux/leds.h>
#include <linux/rculist.h>

#include <net/bluetooth/hci.h>
#include <net/bluetooth/hci_sock.h>

/* HCI priority */
#define HCI_PRIO_MAX	7

/* HCI Core structures */
struct inquiry_data {
	bdaddr_t	bdaddr;
	__u8		pscan_rep_mode;
	__u8		pscan_period_mode;
	__u8		pscan_mode;
	__u8		dev_class[3];
	__le16		clock_offset;
	__s8		rssi;
	__u8		ssp_mode;
};

struct inquiry_entry {
	struct list_head	all;		/* inq_cache.all */
	struct list_head	list;		/* unknown or resolve */
	enum {
		NAME_NOT_KNOWN,
		NAME_NEEDED,
		NAME_PENDING,
		NAME_KNOWN,
	} name_state;
	__u32			timestamp;
	struct inquiry_data	data;
};

struct discovery_state {
	int			type;
	enum {
		DISCOVERY_STOPPED,
		DISCOVERY_STARTING,
		DISCOVERY_FINDING,
		DISCOVERY_RESOLVING,
		DISCOVERY_STOPPING,
	} state;
	struct list_head	all;	/* All devices found during inquiry */
	struct list_head	unknown;	/* Name state not known */
	struct list_head	resolve;	/* Name needs to be resolved */
	__u32			timestamp;
	bdaddr_t		last_adv_addr;
	u8			last_adv_addr_type;
	s8			last_adv_rssi;
	u32			last_adv_flags;
	u8			last_adv_data[HCI_MAX_AD_LENGTH];
	u8			last_adv_data_len;
	bool			report_invalid_rssi;
	bool			result_filtering;
	bool			limited;
	s8			rssi;
	u16			uuid_count;
	u8			(*uuids)[16];
	unsigned long		scan_start;
	unsigned long		scan_duration;
};

struct hci_conn_hash {
	struct list_head list;
	unsigned int     acl_num;
	unsigned int     amp_num;
	unsigned int     sco_num;
	unsigned int     le_num;
	unsigned int     le_num_slave;
};

struct bdaddr_list {
	struct list_head list;
	bdaddr_t bdaddr;
	u8 bdaddr_type;
};

struct bdaddr_list_with_irk {
	struct list_head list;
	bdaddr_t bdaddr;
	u8 bdaddr_type;
	u8 peer_irk[16];
	u8 local_irk[16];
};

struct bt_uuid {
	struct list_head list;
	u8 uuid[16];
	u8 size;
	u8 svc_hint;
};

struct smp_csrk {
	bdaddr_t bdaddr;
	u8 bdaddr_type;
	u8 type;
	u8 val[16];
};

struct smp_ltk {
	struct list_head list;
	struct rcu_head rcu;
	bdaddr_t bdaddr;
	u8 bdaddr_type;
	u8 authenticated;
	u8 type;
	u8 enc_size;
	__le16 ediv;
	__le64 rand;
	u8 val[16];
};

struct smp_irk {
	struct list_head list;
	struct rcu_head rcu;
	bdaddr_t rpa;
	bdaddr_t bdaddr;
	u8 addr_type;
	u8 val[16];
};

struct link_key {
	struct list_head list;
	struct rcu_head rcu;
	bdaddr_t bdaddr;
	u8 type;
	u8 val[HCI_LINK_KEY_SIZE];
	u8 pin_len;
};

struct oob_data {
	struct list_head list;
	bdaddr_t bdaddr;
	u8 bdaddr_type;
	u8 present;
	u8 hash192[16];
	u8 rand192[16];
	u8 hash256[16];
	u8 rand256[16];
};

struct adv_info {
	struct list_head list;
	bool pending;
	__u8	instance;
	__u32	flags;
	__u16	timeout;
	__u16	remaining_time;
	__u16	duration;
	__u16	adv_data_len;
	__u8	adv_data[HCI_MAX_AD_LENGTH];
	__u16	scan_rsp_len;
	__u8	scan_rsp_data[HCI_MAX_AD_LENGTH];
	__s8	tx_power;
	bdaddr_t	random_addr;
	bool 		rpa_expired;
	struct delayed_work	rpa_expired_cb;
};

#define HCI_MAX_ADV_INSTANCES		5
#define HCI_DEFAULT_ADV_DURATION	2

#define HCI_MAX_SHORT_NAME_LENGTH	10

/* Min encryption key size to match with SMP */
#define HCI_MIN_ENC_KEY_SIZE		7

/* Default LE RPA expiry time, 15 minutes */
#define HCI_DEFAULT_RPA_TIMEOUT		(15 * 60)

/* Default min/max age of connection information (1s/3s) */
#define DEFAULT_CONN_INFO_MIN_AGE	1000
#define DEFAULT_CONN_INFO_MAX_AGE	3000
/* Default authenticated payload timeout 30s */
#define DEFAULT_AUTH_PAYLOAD_TIMEOUT   0x0bb8

st