[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 <linux/poll.h>
#include <net/sock.h>
#include <linux/seq_file.h>

#define BT_SUBSYS_VERSION	2
#define BT_SUBSYS_REVISION	22

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

/* Bluetooth versions */
#define BLUETOOTH_VER_1_1	1
#define BLUETOOTH_VER_1_2	2
#define BLUETOOTH_VER_2_0	3

/* 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_SECURITY_FIPS	4

#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

#define BT_CHANNEL_POLICY	10

/* BR/EDR only (default policy)
 *   AMP controllers cannot be used.
 *   Channel move requests from the remote device are denied.
 *   If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
 */
#define BT_CHANNEL_POLICY_BREDR_ONLY		0

/* BR/EDR Preferred
 *   Allow use of AMP controllers.
 *   If the L2CAP channel is currently on AMP, move it to BR/EDR.
 *   Channel move requests from the remote device are allowed.
 */
#define BT_CHANNEL_POLICY_BREDR_PREFERRED	1

/* AMP Preferred
 *   Allow use of AMP controllers
 *   If the L2CAP channel is currently on BR/EDR and AMP controller
 *     resources are available, initiate a channel move to AMP.
 *   Channel move requests from the remote device are allowed.
 *   If the L2CAP socket has not been connected yet, try to create
 *     and configure the channel directly on an AMP controller rather
 *     than BR/EDR.
 */
#define BT_CHANNEL_POLICY_AMP_PREFERRED		2

#define BT_VOICE		11
struct bt_voice {
	__u16 setting;
};

#define BT_VOICE_TRANSPARENT			0x0003
#define BT_VOICE_CVSD_16BIT			0x0060

#define BT_SNDMTU		12
#define BT_RCVMTU		13

__printf(1, 2)
void bt_info(const char *fmt, ...);
__printf(1, 2)
void bt_warn(const char *fmt, ...);
__printf(1, 2)
void bt_err(const char *fmt, ...);
__printf(1, 2)
void bt_err_ratelimited(const char *fmt, ...);

#define BT_INFO(fmt, ...)	bt_info(fmt "\n", ##__VA_ARGS__)
#define BT_WARN(fmt, ...)	bt_warn(fmt "\n", ##__VA_ARGS__)
#define BT_ERR(fmt, ...)	bt_err(fmt "\n", ##__VA_ARGS__)
#define BT_DBG(fmt, ...)	pr_debug(fmt "\n", ##__VA_ARGS__)

#define BT_ERR_RATELIMITED(fmt, ...) bt_err_ratelimited(fmt "\n", ##__VA_ARGS__)

#define bt_dev_info(hdev, fmt, ...)				\
	BT_INFO("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
#define bt_dev_warn(hdev, fmt, ...)				\
	BT_WARN("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
#define bt_dev_err(hdev, fmt, ...)				\
	BT_ERR("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
#define bt_dev_dbg(hdev, fmt, ...)				\
	BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__)

#define bt_dev_err_ratelimited(hdev, fmt, ...)			\
	BT_ERR_RATELIMITED("%s: " fmt, (hdev)->name, ##__VA_ARGS__)

/* 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
};

/* If unused will be removed by compiler */
static inline const char *state_to_string(int state)
{
	switch (state) {
	case BT_CONNECTED:
		return "BT_CONNECTED";
	case BT_OPEN:
		return "BT_OPEN";
	case BT_BOUND:
		return "BT_BOUND";
	case BT_LISTEN:
		return "BT_LISTEN";
	case BT_CONNECT:
		return "BT_CONNECT";
	case BT_CONNECT2:
		return "BT_CONNECT2";
	case BT_CONFIG:
		return "BT_CONFIG";
	case BT_DISCONN:
		return "BT_DISCONN";
	case BT_CLOSED:
		return "BT_CLOSED";
	}

	return "invalid state";
}

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

/* BD Address type */
#define BDADDR_BREDR		0x00
#define BDADDR_LE_PUBLIC	0x01
#define BDADDR_LE_RANDOM	0x02

static inline bool bdaddr_type_is_valid(u8 type)
{
	switch (type) {
	case BDADDR_BREDR:
	case BDADDR_LE_PUBLIC:
	case BDADDR_LE_RANDOM:
		return true;
	}

	return false;
}

static inline bool bdaddr_type_is_le(u8 type)
{
	switch (type) {
	case BDADDR_LE_PUBLIC:
	case BDADDR_LE_RANDOM:
		return true;
	}

	return false;
}

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

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

void baswap(bdaddr_t *dst, const bdaddr_t *src);

/* Common socket structures and functions */

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

struct bt_sock {
	struct sock sk;
	struct list_head accept_q;
	struct sock *parent;
	unsigned long flags;
	void (*skb_msg_name)(struct sk_buff *, void *, int *);
};

enum {
	BT_SK_DEFER_SETUP,
	BT_SK_SUSPEND,
};

struct bt_sock_list {
	struct hlist_head head;
	rwlock_t          lock;
#ifdef CONFIG_PROC_FS
        int (* custom_seq_show)(struct seq_file *, void *);
#endif
};

int  bt_sock_register(int proto, const struct net_proto_family *ops);
void 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 socket *sock, struct msghdr *msg, size_t len,
		     int flags);
int  bt_sock_stream_recvmsg(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);
int  bt_sock_wait_ready(struct sock *sk, unsigned long flags);

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

/* Skb helpers */
struct l2cap_ctrl {
	u8	sframe:1,
		poll:1,
		final:1,
		fcs:1,
		sar:2,
		super:2;

	u16	reqseq;
	u16	txseq;
	u8	retries;
	__le16  psm;
	bdaddr_t bdaddr;
	struct l2cap_chan *chan;
};

struct hci_dev;

typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status,
				       u16 opcode, struct sk_buff *skb);

#define HCI_REQ_START	BIT(0)
#define HCI_REQ_SKB	BIT(1)

struct hci_ctrl {
	u16 opcode;
	u8 req_flags;
	u8 req_event;
	union {
		hci_req_complete_t req_complete;
		hci_req_complete_skb_t req_complete_skb;
	};
};

struct bt_skb_cb {
	u8 pkt_type;
	u8 force_active;
	u16 expect;
	u8 incoming:1;
	union {
		struct l2cap_ctrl l2cap;
		struct hci_ctrl hci;
	};
};
#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))

#define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
#define hci_skb_expect(skb) bt_cb((skb))->expect
#define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode

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

	skb = alloc_skb(len + BT_SKB_RESERVE, how);
	if (skb)
		skb_reserve(skb, BT_SKB_RESERVE);
	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;

	skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
	if (skb)
		skb_reserve(skb, BT_SKB_RESERVE);

	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);

void hci_sock_set_flag(struct sock *sk, int nr);
void hci_sock_clear_flag(struct sock *sk, int nr);
int hci_sock_test_flag(struct sock *sk, int nr);
unsigned short hci_sock_get_channel(struct sock *sk);
u32 hci_sock_get_cookie(struct sock *sk);

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

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

int bt_procfs_init(struct net *net, const char *name,
		   struct bt_sock_list *sk_list,
		   int (*seq_show)(struct seq_file *, void *));
void bt_procfs_cleanup(struct net *net, const char *name);

extern struct dentry *bt_debugfs;

int l2cap_init(void);
void l2cap_exit(void);

#if IS_ENABLED(CONFIG_BT_BREDR)
int sco_init(void);
void sco_exit(void);
#else
static inline int sco_init(void)
{
	return 0;
}

static inline void sco_exit(void)
{
}
#endif

int mgmt_init(void);
void mgmt_exit(void);

void bt_sock_reclassify_lock(struct sock *sk, int proto);

#endif /* __BLUETOOTH_H */
Commit	Line	Data
38351c66	1	/*
1da177e4 LT	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
38351c66 GP	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
1da177e4 LT	18	OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1da177e4 LT	19
38351c66 GP	20	ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
38351c66 GP	21	COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
1da177e4 LT	22	SOFTWARE IS DISCLAIMED.
	23	*/
	24
	25	#ifndef __BLUETOOTH_H
	26	#define __BLUETOOTH_H
	27
1da177e4 LT	28	#include <linux/poll.h>
1da177e4 LT	29	#include <net/sock.h>
256a06c8	30	#include <linux/seq_file.h>
1da177e4	31
9e8305b3	32	#define BT_SUBSYS_VERSION 2
4037a774	33	#define BT_SUBSYS_REVISION 22
dd31506d	34
1da177e4 LT	35	#ifndef AF_BLUETOOTH
	36	#define AF_BLUETOOTH 31
	37	#define PF_BLUETOOTH AF_BLUETOOTH
	38	#endif
	39
d095c1eb AE	40	/* Bluetooth versions */
	41	#define BLUETOOTH_VER_1_1 1
	42	#define BLUETOOTH_VER_1_2 2
	43	#define BLUETOOTH_VER_2_0 3
	44
1da177e4 LT	45	/* Reserv for core and drivers use */
	46	#define BT_SKB_RESERVE 8
	47
	48	#define BTPROTO_L2CAP 0
	49	#define BTPROTO_HCI 1
	50	#define BTPROTO_SCO 2
	51	#define BTPROTO_RFCOMM 3
	52	#define BTPROTO_BNEP 4
	53	#define BTPROTO_CMTP 5
	54	#define BTPROTO_HIDP 6
	55	#define BTPROTO_AVDTP 7
	56
	57	#define SOL_HCI 0
	58	#define SOL_L2CAP 6
	59	#define SOL_SCO 17
	60	#define SOL_RFCOMM 18
	61
8c1b2355 MH	62	#define BT_SECURITY 4
	63	struct bt_security {
	64	__u8 level;
8f360119	65	__u8 key_size;
8c1b2355 MH	66	};
	67	#define BT_SECURITY_SDP 0
	68	#define BT_SECURITY_LOW 1
	69	#define BT_SECURITY_MEDIUM 2
	70	#define BT_SECURITY_HIGH 3
7b5a9241	71	#define BT_SECURITY_FIPS 4
8c1b2355	72
c4f912e1 MH	73	#define BT_DEFER_SETUP 7
c4f912e1 MH	74
e702112f AE	75	#define BT_FLUSHABLE 8
	76
	77	#define BT_FLUSHABLE_OFF 0
	78	#define BT_FLUSHABLE_ON 1
	79
14b12d0b JG	80	#define BT_POWER 9
	81	struct bt_power {
	82	__u8 force_active;
	83	};
	84	#define BT_POWER_FORCE_ACTIVE_OFF 0
	85	#define BT_POWER_FORCE_ACTIVE_ON 1
	86
c14968b0 MM	87	#define BT_CHANNEL_POLICY 10
	88
	89	/* BR/EDR only (default policy)
	90	* AMP controllers cannot be used.
	91	* Channel move requests from the remote device are denied.
	92	* If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
	93	*/
	94	#define BT_CHANNEL_POLICY_BREDR_ONLY 0
	95
	96	/* BR/EDR Preferred
	97	* Allow use of AMP controllers.
	98	* If the L2CAP channel is currently on AMP, move it to BR/EDR.
	99	* Channel move requests from the remote device are allowed.
	100	*/
	101	#define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
	102
	103	/* AMP Preferred
	104	* Allow use of AMP controllers
	105	* If the L2CAP channel is currently on BR/EDR and AMP controller
	106	* resources are available, initiate a channel move to AMP.
	107	* Channel move requests from the remote device are allowed.
	108	* If the L2CAP socket has not been connected yet, try to create
	109	* and configure the channel directly on an AMP controller rather
	110	* than BR/EDR.
	111	*/
	112	#define BT_CHANNEL_POLICY_AMP_PREFERRED 2
	113
ad10b1a4 FD	114	#define BT_VOICE 11
	115	struct bt_voice {
	116	__u16 setting;
	117	};
	118
	119	#define BT_VOICE_TRANSPARENT 0x0003
	120	#define BT_VOICE_CVSD_16BIT 0x0060
	121
1f435424 JH	122	#define BT_SNDMTU 12
	123	#define BT_RCVMTU 13
	124
3ed7003e	125	__printf(1, 2)
2b0bf6c8	126	void bt_info(const char *fmt, ...);
3ed7003e	127	__printf(1, 2)
594b31ea FD	128	void bt_warn(const char *fmt, ...);
594b31ea FD	129	__printf(1, 2)
2b0bf6c8	130	void bt_err(const char *fmt, ...);
e781b7f7 SJ	131	__printf(1, 2)
e781b7f7 SJ	132	void bt_err_ratelimited(const char *fmt, ...);
3ed7003e JP	133
3ed7003e JP	134	#define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
594b31ea	135	#define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__)
3ed7003e JP	136	#define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
3ed7003e JP	137	#define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
1da177e4	138
e781b7f7 SJ	139	#define BT_ERR_RATELIMITED(fmt, ...) bt_err_ratelimited(fmt "\n", ##__VA_ARGS__)
e781b7f7 SJ	140
6f558b70 LP	141	#define bt_dev_info(hdev, fmt, ...) \
6f558b70 LP	142	BT_INFO("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
594b31ea FD	143	#define bt_dev_warn(hdev, fmt, ...) \
594b31ea FD	144	BT_WARN("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
6f558b70 LP	145	#define bt_dev_err(hdev, fmt, ...) \
	146	BT_ERR("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
	147	#define bt_dev_dbg(hdev, fmt, ...) \
	148	BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
	149
2064ee33 MH	150	#define bt_dev_err_ratelimited(hdev, fmt, ...) \
	151	BT_ERR_RATELIMITED("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
	152
1da177e4 LT	153	/* Connection and socket states */
	154	enum {
	155	BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
	156	BT_OPEN,
	157	BT_BOUND,
	158	BT_LISTEN,
	159	BT_CONNECT,
	160	BT_CONNECT2,
	161	BT_CONFIG,
	162	BT_DISCONN,
	163	BT_CLOSED
	164	};
	165
20d1803a AE	166	/* If unused will be removed by compiler */
	167	static inline const char *state_to_string(int state)
	168	{
	169	switch (state) {
	170	case BT_CONNECTED:
	171	return "BT_CONNECTED";
	172	case BT_OPEN:
	173	return "BT_OPEN";
	174	case BT_BOUND:
	175	return "BT_BOUND";
	176	case BT_LISTEN:
	177	return "BT_LISTEN";
	178	case BT_CONNECT:
	179	return "BT_CONNECT";
	180	case BT_CONNECT2:
	181	return "BT_CONNECT2";
	182	case BT_CONFIG:
	183	return "BT_CONFIG";
	184	case BT_DISCONN:
	185	return "BT_DISCONN";
	186	case BT_CLOSED:
	187	return "BT_CLOSED";
	188	}
	189
	190	return "invalid state";
	191	}
	192
1da177e4 LT	193	/* BD Address */
	194	typedef struct {
	195	__u8 b[6];
66c853cc	196	} __packed bdaddr_t;
1da177e4	197
591f47f3 AG	198	/* BD Address type */
	199	#define BDADDR_BREDR 0x00
	200	#define BDADDR_LE_PUBLIC 0x01
	201	#define BDADDR_LE_RANDOM 0x02
	202
21fcf572	203	static inline bool bdaddr_type_is_valid(u8 type)
679efe2b JH	204	{
	205	switch (type) {
	206	case BDADDR_BREDR:
	207	case BDADDR_LE_PUBLIC:
	208	case BDADDR_LE_RANDOM:
	209	return true;
	210	}
	211
	212	return false;
	213	}
	214
21fcf572	215	static inline bool bdaddr_type_is_le(u8 type)
679efe2b JH	216	{
	217	switch (type) {
	218	case BDADDR_LE_PUBLIC:
	219	case BDADDR_LE_RANDOM:
	220	return true;
	221	}
	222
	223	return false;
	224	}
	225
a59ac2f7 MH	226	#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
a59ac2f7 MH	227	#define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
1da177e4 LT	228
1da177e4 LT	229	/* Copy, swap, convert BD Address */
f53c20e9	230	static inline int bacmp(const bdaddr_t ba1, const bdaddr_t ba2)
1da177e4 LT	231	{
	232	return memcmp(ba1, ba2, sizeof(bdaddr_t));
	233	}
f53c20e9	234	static inline void bacpy(bdaddr_t dst, const bdaddr_t src)
1da177e4 LT	235	{
	236	memcpy(dst, src, sizeof(bdaddr_t));
	237	}
	238
65bce462	239	void baswap(bdaddr_t dst, const bdaddr_t src);
1da177e4 LT	240
	241	/* Common socket structures and functions */
	242
	243	#define bt_sk(__sk) ((struct bt_sock *) __sk)
	244
	245	struct bt_sock {
	246	struct sock sk;
1da177e4 LT	247	struct list_head accept_q;
1da177e4 LT	248	struct sock *parent;
c5daa683	249	unsigned long flags;
d9763698	250	void (skb_msg_name)(struct sk_buff , void , int );
c5daa683 GP	251	};
	252
	253	enum {
	254	BT_SK_DEFER_SETUP,
	255	BT_SK_SUSPEND,
1da177e4 LT	256	};
	257
	258	struct bt_sock_list {
	259	struct hlist_head head;
	260	rwlock_t lock;
256a06c8	261	#ifdef CONFIG_PROC_FS
256a06c8 MY	262	int (* custom_seq_show)(struct seq_file , void );
256a06c8 MY	263	#endif
1da177e4 LT	264	};
1da177e4 LT	265
ec1b4cf7	266	int bt_sock_register(int proto, const struct net_proto_family *ops);
be9f97f0	267	void bt_sock_unregister(int proto);
1da177e4 LT	268	void bt_sock_link(struct bt_sock_list l, struct sock s);
1da177e4 LT	269	void bt_sock_unlink(struct bt_sock_list l, struct sock s);
1b784140 YX	270	int bt_sock_recvmsg(struct socket sock, struct msghdr msg, size_t len,
	271	int flags);
	272	int bt_sock_stream_recvmsg(struct socket sock, struct msghdr msg,
	273	size_t len, int flags);
c3c7ea65	274	uint bt_sock_poll(struct file file, struct socket sock, poll_table *wait);
3241ad82	275	int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
1da177e4	276	int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
e793dcf0	277	int bt_sock_wait_ready(struct sock *sk, unsigned long flags);
1da177e4	278
a60ccf97	279	void bt_accept_enqueue(struct sock parent, struct sock sk, bool bh);
1da177e4 LT	280	void bt_accept_unlink(struct sock *sk);
	281	struct sock bt_accept_dequeue(struct sock parent, struct socket *newsock);
	282
	283	/* Skb helpers */
00e3112c	284	struct l2cap_ctrl {
21fcf572	285	u8 sframe:1,
07758991 MH	286	poll:1,
	287	final:1,
	288	fcs:1,
	289	sar:2,
	290	super:2;
21fcf572 PM	291
	292	u16 reqseq;
	293	u16 txseq;
	294	u8 retries;
a4368ff3 JH	295	__le16 psm;
	296	bdaddr_t bdaddr;
	297	struct l2cap_chan *chan;
00e3112c MM	298	};
00e3112c MM	299
3119ae95 JH	300	struct hci_dev;
3119ae95 JH	301
1904a853	302	typedef void (hci_req_complete_t)(struct hci_dev hdev, u8 status, u16 opcode);
e6214487 JH	303	typedef void (hci_req_complete_skb_t)(struct hci_dev hdev, u8 status,
e6214487 JH	304	u16 opcode, struct sk_buff *skb);
3119ae95	305
44d27137 JH	306	#define HCI_REQ_START BIT(0)
	307	#define HCI_REQ_SKB BIT(1)
	308
242c0ebd	309	struct hci_ctrl {
21fcf572	310	u16 opcode;
44d27137	311	u8 req_flags;
242c0ebd	312	u8 req_event;
44d27137 JH	313	union {
	314	hci_req_complete_t req_complete;
	315	hci_req_complete_skb_t req_complete_skb;
	316	};
db6e3e8d JH	317	};
db6e3e8d JH	318
1da177e4	319	struct bt_skb_cb {
21fcf572 PM	320	u8 pkt_type;
	321	u8 force_active;
	322	u16 expect;
	323	u8 incoming:1;
db6e3e8d JH	324	union {
db6e3e8d JH	325	struct l2cap_ctrl l2cap;
242c0ebd	326	struct hci_ctrl hci;
db6e3e8d	327	};
1da177e4	328	};
1c2acffb	329	#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
1da177e4	330
f5c4a42a MH	331	#define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
	332	#define hci_skb_expect(skb) bt_cb((skb))->expect
	333	#define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
	334
dd0fc66f	335	static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
1da177e4 LT	336	{
	337	struct sk_buff *skb;
	338
c3c7ea65	339	skb = alloc_skb(len + BT_SKB_RESERVE, how);
5fcc86bd	340	if (skb)
1da177e4	341	skb_reserve(skb, BT_SKB_RESERVE);
1da177e4 LT	342	return skb;
	343	}
	344
5a9d0a3f WR	345	static inline struct sk_buff bt_skb_send_alloc(struct sock sk,
5a9d0a3f WR	346	unsigned long len, int nb, int *err)
1da177e4 LT	347	{
	348	struct sk_buff *skb;
	349
c3c7ea65	350	skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
5fcc86bd	351	if (skb)
1da177e4	352	skb_reserve(skb, BT_SKB_RESERVE);
e454c844 GP	353
	354	if (!skb && *err)
	355	return NULL;
	356
	357	*err = sock_error(sk);
	358	if (*err)
	359	goto out;
	360
	361	if (sk->sk_shutdown) {
	362	*err = -ECONNRESET;
	363	goto out;
	364	}
1da177e4 LT	365
1da177e4 LT	366	return skb;
e454c844 GP	367
	368	out:
	369	kfree_skb(skb);
	370	return NULL;
1da177e4 LT	371	}
1da177e4 LT	372
21fcf572	373	int bt_to_errno(u16 code);
1da177e4	374
6befc644 MH	375	void hci_sock_set_flag(struct sock *sk, int nr);
6befc644 MH	376	void hci_sock_clear_flag(struct sock *sk, int nr);
c85be545	377	int hci_sock_test_flag(struct sock *sk, int nr);
d0f172b1	378	unsigned short hci_sock_get_channel(struct sock *sk);
70ecce91	379	u32 hci_sock_get_cookie(struct sock *sk);
6befc644	380
e74e58f8 JP	381	int hci_sock_init(void);
e74e58f8 JP	382	void hci_sock_cleanup(void);
6516455d	383
e74e58f8 JP	384	int bt_sysfs_init(void);
e74e58f8 JP	385	void bt_sysfs_cleanup(void);
6516455d	386
e74e58f8 JP	387	int bt_procfs_init(struct net net, const char name,
	388	struct bt_sock_list *sk_list,
	389	int (seq_show)(struct seq_file , void *));
	390	void bt_procfs_cleanup(struct net net, const char name);
256a06c8	391
aef7d97c	392	extern struct dentry *bt_debugfs;
be9d1227	393
64274518 GP	394	int l2cap_init(void);
64274518 GP	395	void l2cap_exit(void);
64274518	396
ff50e8af	397	#if IS_ENABLED(CONFIG_BT_BREDR)
64274518 GP	398	int sco_init(void);
64274518 GP	399	void sco_exit(void);
ff50e8af AW	400	#else
	401	static inline int sco_init(void)
	402	{
	403	return 0;
	404	}
	405
	406	static inline void sco_exit(void)
	407	{
	408	}
	409	#endif
64274518	410
6d785aa3 JH	411	int mgmt_init(void);
	412	void mgmt_exit(void);
	413
d22015aa OP	414	void bt_sock_reclassify_lock(struct sock *sk, int proto);
d22015aa OP	415
1da177e4	416	#endif /* __BLUETOOTH_H */