[mirror_ubuntu-bionic-kernel.git] / include / net / bluetooth / bluetooth.h

/* 
   BlueZ - Bluetooth protocol stack for Linux
   Copyright (C) 2000-2001 Qualcomm Incorporated

   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 __BLUETOOTH_H
#define __BLUETOOTH_H

#include <asm/types.h>
#include <asm/byteorder.h>
#include <linux/list.h>
#include <linux/poll.h>
#include <net/sock.h>

#ifndef AF_BLUETOOTH
#define AF_BLUETOOTH	31
#define PF_BLUETOOTH	AF_BLUETOOTH
#endif

/* Reserv for core and drivers use */
#define BT_SKB_RESERVE	8

#define BTPROTO_L2CAP	0
#define BTPROTO_HCI	1
#define BTPROTO_SCO	2
#define BTPROTO_RFCOMM	3
#define BTPROTO_BNEP	4
#define BTPROTO_CMTP	5
#define BTPROTO_HIDP	6
#define BTPROTO_AVDTP	7

#define SOL_HCI		0
#define SOL_L2CAP	6
#define SOL_SCO		17
#define SOL_RFCOMM	18

#define BT_SECURITY	4
struct bt_security {
	__u8 level;
	__u8 key_size;
};
#define BT_SECURITY_SDP		0
#define BT_SECURITY_LOW		1
#define BT_SECURITY_MEDIUM	2
#define BT_SECURITY_HIGH	3

#define BT_DEFER_SETUP	7

#define BT_FLUSHABLE	8

#define BT_FLUSHABLE_OFF	0
#define BT_FLUSHABLE_ON		1

#define BT_POWER	9
struct bt_power {
	__u8 force_active;
};
#define BT_POWER_FORCE_ACTIVE_OFF 0
#define BT_POWER_FORCE_ACTIVE_ON  1

__printf(2, 3)
int bt_printk(const char *level, const char *fmt, ...);

#define BT_INFO(fmt, arg...)   bt_printk(KERN_INFO, pr_fmt(fmt), ##arg)
#define BT_ERR(fmt, arg...)    bt_printk(KERN_ERR, pr_fmt(fmt), ##arg)
#define BT_DBG(fmt, arg...)    pr_debug(fmt "\n", ##arg)

/* Connection and socket states */
enum {
	BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
	BT_OPEN,
	BT_BOUND,
	BT_LISTEN,
	BT_CONNECT,
	BT_CONNECT2,
	BT_CONFIG,
	BT_DISCONN,
	BT_CLOSED
};

/* BD Address */
typedef struct {
	__u8 b[6];
} __packed bdaddr_t;

#define BDADDR_ANY   (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
#define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}})

/* Copy, swap, convert BD Address */
static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2)
{
	return memcmp(ba1, ba2, sizeof(bdaddr_t));
}
static inline void bacpy(bdaddr_t *dst, bdaddr_t *src)
{
	memcpy(dst, src, sizeof(bdaddr_t));
}

void baswap(bdaddr_t *dst, bdaddr_t *src);
char *batostr(bdaddr_t *ba);
bdaddr_t *strtoba(char *str);

/* Common socket structures and functions */

#define bt_sk(__sk) ((struct bt_sock *) __sk)

struct bt_sock {
	struct sock sk;
	bdaddr_t    src;
	bdaddr_t    dst;
	struct list_head accept_q;
	struct sock *parent;
	u32 defer_setup;
};

struct bt_sock_list {
	struct hlist_head head;
	rwlock_t          lock;
};

int  bt_sock_register(int proto, const struct net_proto_family *ops);
int  bt_sock_unregister(int proto);
void bt_sock_link(struct bt_sock_list *l, struct sock *s);
void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
int  bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
				struct msghdr *msg, size_t len, int flags);
int  bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
			struct msghdr *msg, size_t len, int flags);
uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait);
int  bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
int  bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);

void bt_accept_enqueue(struct sock *parent, struct sock *sk);
void bt_accept_unlink(struct sock *sk);
struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);

/* Skb helpers */
struct bt_skb_cb {
	__u8 pkt_type;
	__u8 incoming;
	__u16 expect;
	__u8 tx_seq;
	__u8 retries;
	__u8 sar;
	unsigned short channel;
	__u8 force_active;
};
#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))

static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
{
	struct sk_buff *skb;

	if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) {
		skb_reserve(skb, BT_SKB_RESERVE);
		bt_cb(skb)->incoming  = 0;
	}
	return skb;
}

static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
					unsigned long len, int nb, int *err)
{
	struct sk_buff *skb;

	release_sock(sk);
	if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) {
		skb_reserve(skb, BT_SKB_RESERVE);
		bt_cb(skb)->incoming  = 0;
	}
	lock_sock(sk);

	if (!skb && *err)
		return NULL;

	*err = sock_error(sk);
	if (*err)
		goto out;

	if (sk->sk_shutdown) {
		*err = -ECONNRESET;
		goto out;
	}

	return skb;

out:
	kfree_skb(skb);
	return NULL;
}

int bt_to_errno(__u16 code);

extern int hci_sock_init(void);
extern void hci_sock_cleanup(void);

extern int bt_sysfs_init(void);
extern void bt_sysfs_cleanup(void);

extern struct dentry *bt_debugfs;

#ifdef CONFIG_BT_L2CAP
int l2cap_init(void);
void l2cap_exit(void);
#else
static inline int l2cap_init(void)
{
	return 0;
}

static inline void l2cap_exit(void)
{
}
#endif

#ifdef CONFIG_BT_SCO
int sco_init(void);
void sco_exit(void);
#else
static inline int sco_init(void)
{
	return 0;
}

static inline void sco_exit(void)
{
}
#endif

#endif /* __BLUETOOTH_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	BlueZ - Bluetooth protocol stack for Linux
	3	Copyright (C) 2000-2001 Qualcomm Incorporated
	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 __BLUETOOTH_H
	26	#define __BLUETOOTH_H
	27
	28	#include <asm/types.h>
	29	#include <asm/byteorder.h>
	30	#include <linux/list.h>
	31	#include <linux/poll.h>
	32	#include <net/sock.h>
	33
	34	#ifndef AF_BLUETOOTH
	35	#define AF_BLUETOOTH 31
	36	#define PF_BLUETOOTH AF_BLUETOOTH
	37	#endif
	38
	39	/* Reserv for core and drivers use */
	40	#define BT_SKB_RESERVE 8
	41
	42	#define BTPROTO_L2CAP 0
	43	#define BTPROTO_HCI 1
	44	#define BTPROTO_SCO 2
	45	#define BTPROTO_RFCOMM 3
	46	#define BTPROTO_BNEP 4
	47	#define BTPROTO_CMTP 5
	48	#define BTPROTO_HIDP 6
	49	#define BTPROTO_AVDTP 7
	50
	51	#define SOL_HCI 0
	52	#define SOL_L2CAP 6
	53	#define SOL_SCO 17
	54	#define SOL_RFCOMM 18
	55
8c1b2355 MH	56	#define BT_SECURITY 4
	57	struct bt_security {
	58	__u8 level;
8f360119	59	__u8 key_size;
8c1b2355 MH	60	};
	61	#define BT_SECURITY_SDP 0
	62	#define BT_SECURITY_LOW 1
	63	#define BT_SECURITY_MEDIUM 2
	64	#define BT_SECURITY_HIGH 3
	65
c4f912e1 MH	66	#define BT_DEFER_SETUP 7
c4f912e1 MH	67
e702112f AE	68	#define BT_FLUSHABLE 8
	69
	70	#define BT_FLUSHABLE_OFF 0
	71	#define BT_FLUSHABLE_ON 1
	72
14b12d0b JG	73	#define BT_POWER 9
	74	struct bt_power {
	75	__u8 force_active;
	76	};
	77	#define BT_POWER_FORCE_ACTIVE_OFF 0
	78	#define BT_POWER_FORCE_ACTIVE_ON 1
	79
b9075fa9	80	__printf(2, 3)
e1447d8d JP	81	int bt_printk(const char level, const char fmt, ...);
	82
	83	#define BT_INFO(fmt, arg...) bt_printk(KERN_INFO, pr_fmt(fmt), ##arg)
	84	#define BT_ERR(fmt, arg...) bt_printk(KERN_ERR, pr_fmt(fmt), ##arg)
	85	#define BT_DBG(fmt, arg...) pr_debug(fmt "\n", ##arg)
1da177e4	86
1da177e4 LT	87	/* Connection and socket states */
	88	enum {
	89	BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
	90	BT_OPEN,
	91	BT_BOUND,
	92	BT_LISTEN,
	93	BT_CONNECT,
	94	BT_CONNECT2,
	95	BT_CONFIG,
	96	BT_DISCONN,
	97	BT_CLOSED
	98	};
	99
1da177e4 LT	100	/* BD Address */
	101	typedef struct {
	102	__u8 b[6];
66c853cc	103	} __packed bdaddr_t;
1da177e4 LT	104
	105	#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
	106	#define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}})
	107
	108	/* Copy, swap, convert BD Address */
	109	static inline int bacmp(bdaddr_t ba1, bdaddr_t ba2)
	110	{
	111	return memcmp(ba1, ba2, sizeof(bdaddr_t));
	112	}
	113	static inline void bacpy(bdaddr_t dst, bdaddr_t src)
	114	{
	115	memcpy(dst, src, sizeof(bdaddr_t));
	116	}
	117
	118	void baswap(bdaddr_t dst, bdaddr_t src);
	119	char batostr(bdaddr_t ba);
	120	bdaddr_t strtoba(char str);
	121
	122	/* Common socket structures and functions */
	123
	124	#define bt_sk(__sk) ((struct bt_sock *) __sk)
	125
	126	struct bt_sock {
	127	struct sock sk;
	128	bdaddr_t src;
	129	bdaddr_t dst;
	130	struct list_head accept_q;
	131	struct sock *parent;
c4f912e1	132	u32 defer_setup;
1da177e4 LT	133	};
	134
	135	struct bt_sock_list {
	136	struct hlist_head head;
	137	rwlock_t lock;
	138	};
	139
ec1b4cf7	140	int bt_sock_register(int proto, const struct net_proto_family *ops);
1da177e4 LT	141	int bt_sock_unregister(int proto);
	142	void bt_sock_link(struct bt_sock_list l, struct sock s);
	143	void bt_sock_unlink(struct bt_sock_list l, struct sock s);
5a9d0a3f WR	144	int bt_sock_recvmsg(struct kiocb iocb, struct socket sock,
5a9d0a3f WR	145	struct msghdr *msg, size_t len, int flags);
796c86ee MM	146	int bt_sock_stream_recvmsg(struct kiocb iocb, struct socket sock,
796c86ee MM	147	struct msghdr *msg, size_t len, int flags);
1da177e4	148	uint bt_sock_poll(struct file * file, struct socket sock, poll_table wait);
3241ad82	149	int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
1da177e4 LT	150	int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
	151
	152	void bt_accept_enqueue(struct sock parent, struct sock sk);
	153	void bt_accept_unlink(struct sock *sk);
	154	struct sock bt_accept_dequeue(struct sock parent, struct socket *newsock);
	155
	156	/* Skb helpers */
	157	struct bt_skb_cb {
0d48d939 MH	158	__u8 pkt_type;
0d48d939 MH	159	__u8 incoming;
33e882a5	160	__u16 expect;
1c2acffb	161	__u8 tx_seq;
e90bac06	162	__u8 retries;
8f17154f	163	__u8 sar;
a40c406c	164	unsigned short channel;
14b12d0b	165	__u8 force_active;
1da177e4	166	};
1c2acffb	167	#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
1da177e4	168
dd0fc66f	169	static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
1da177e4 LT	170	{
	171	struct sk_buff *skb;
	172
	173	if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) {
	174	skb_reserve(skb, BT_SKB_RESERVE);
	175	bt_cb(skb)->incoming = 0;
	176	}
	177	return skb;
	178	}
	179
5a9d0a3f WR	180	static inline struct sk_buff bt_skb_send_alloc(struct sock sk,
5a9d0a3f WR	181	unsigned long len, int nb, int *err)
1da177e4 LT	182	{
	183	struct sk_buff *skb;
	184
e454c844	185	release_sock(sk);
1da177e4 LT	186	if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) {
	187	skb_reserve(skb, BT_SKB_RESERVE);
	188	bt_cb(skb)->incoming = 0;
	189	}
e454c844 GP	190	lock_sock(sk);
	191
	192	if (!skb && *err)
	193	return NULL;
	194
	195	*err = sock_error(sk);
	196	if (*err)
	197	goto out;
	198
	199	if (sk->sk_shutdown) {
	200	*err = -ECONNRESET;
	201	goto out;
	202	}
1da177e4 LT	203
1da177e4 LT	204	return skb;
e454c844 GP	205
	206	out:
	207	kfree_skb(skb);
	208	return NULL;
1da177e4 LT	209	}
1da177e4 LT	210
e175072f	211	int bt_to_errno(__u16 code);
1da177e4	212
6516455d	213	extern int hci_sock_init(void);
04005dd9	214	extern void hci_sock_cleanup(void);
6516455d MH	215
	216	extern int bt_sysfs_init(void);
	217	extern void bt_sysfs_cleanup(void);
	218
aef7d97c	219	extern struct dentry *bt_debugfs;
be9d1227	220
64274518 GP	221	#ifdef CONFIG_BT_L2CAP
	222	int l2cap_init(void);
	223	void l2cap_exit(void);
	224	#else
	225	static inline int l2cap_init(void)
	226	{
	227	return 0;
	228	}
	229
	230	static inline void l2cap_exit(void)
	231	{
	232	}
	233	#endif
	234
	235	#ifdef CONFIG_BT_SCO
	236	int sco_init(void);
	237	void sco_exit(void);
	238	#else
	239	static inline int sco_init(void)
	240	{
	241	return 0;
	242	}
	243
	244	static inline void sco_exit(void)
	245	{
	246	}
	247	#endif
	248
1da177e4	249	#endif /* __BLUETOOTH_H */