[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 "2.21"

#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__)

/* 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, 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);
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);

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
dd31506d MH	32	#define BT_SUBSYS_VERSION "2.21"
dd31506d MH	33
1da177e4 LT	34	#ifndef AF_BLUETOOTH
	35	#define AF_BLUETOOTH 31
	36	#define PF_BLUETOOTH AF_BLUETOOTH
	37	#endif
	38
d095c1eb AE	39	/* Bluetooth versions */
	40	#define BLUETOOTH_VER_1_1 1
	41	#define BLUETOOTH_VER_1_2 2
	42	#define BLUETOOTH_VER_2_0 3
	43
1da177e4 LT	44	/* Reserv for core and drivers use */
	45	#define BT_SKB_RESERVE 8
	46
	47	#define BTPROTO_L2CAP 0
	48	#define BTPROTO_HCI 1
	49	#define BTPROTO_SCO 2
	50	#define BTPROTO_RFCOMM 3
	51	#define BTPROTO_BNEP 4
	52	#define BTPROTO_CMTP 5
	53	#define BTPROTO_HIDP 6
	54	#define BTPROTO_AVDTP 7
	55
	56	#define SOL_HCI 0
	57	#define SOL_L2CAP 6
	58	#define SOL_SCO 17
	59	#define SOL_RFCOMM 18
	60
8c1b2355 MH	61	#define BT_SECURITY 4
	62	struct bt_security {
	63	__u8 level;
8f360119	64	__u8 key_size;
8c1b2355 MH	65	};
	66	#define BT_SECURITY_SDP 0
	67	#define BT_SECURITY_LOW 1
	68	#define BT_SECURITY_MEDIUM 2
	69	#define BT_SECURITY_HIGH 3
7b5a9241	70	#define BT_SECURITY_FIPS 4
8c1b2355	71
c4f912e1 MH	72	#define BT_DEFER_SETUP 7
c4f912e1 MH	73
e702112f AE	74	#define BT_FLUSHABLE 8
	75
	76	#define BT_FLUSHABLE_OFF 0
	77	#define BT_FLUSHABLE_ON 1
	78
14b12d0b JG	79	#define BT_POWER 9
	80	struct bt_power {
	81	__u8 force_active;
	82	};
	83	#define BT_POWER_FORCE_ACTIVE_OFF 0
	84	#define BT_POWER_FORCE_ACTIVE_ON 1
	85
c14968b0 MM	86	#define BT_CHANNEL_POLICY 10
	87
	88	/* BR/EDR only (default policy)
	89	* AMP controllers cannot be used.
	90	* Channel move requests from the remote device are denied.
	91	* If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
	92	*/
	93	#define BT_CHANNEL_POLICY_BREDR_ONLY 0
	94
	95	/* BR/EDR Preferred
	96	* Allow use of AMP controllers.
	97	* If the L2CAP channel is currently on AMP, move it to BR/EDR.
	98	* Channel move requests from the remote device are allowed.
	99	*/
	100	#define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
	101
	102	/* AMP Preferred
	103	* Allow use of AMP controllers
	104	* If the L2CAP channel is currently on BR/EDR and AMP controller
	105	* resources are available, initiate a channel move to AMP.
	106	* Channel move requests from the remote device are allowed.
	107	* If the L2CAP socket has not been connected yet, try to create
	108	* and configure the channel directly on an AMP controller rather
	109	* than BR/EDR.
	110	*/
	111	#define BT_CHANNEL_POLICY_AMP_PREFERRED 2
	112
ad10b1a4 FD	113	#define BT_VOICE 11
	114	struct bt_voice {
	115	__u16 setting;
	116	};
	117
	118	#define BT_VOICE_TRANSPARENT 0x0003
	119	#define BT_VOICE_CVSD_16BIT 0x0060
	120
1f435424 JH	121	#define BT_SNDMTU 12
	122	#define BT_RCVMTU 13
	123
3ed7003e	124	__printf(1, 2)
2b0bf6c8	125	void bt_info(const char *fmt, ...);
3ed7003e	126	__printf(1, 2)
594b31ea FD	127	void bt_warn(const char *fmt, ...);
594b31ea FD	128	__printf(1, 2)
2b0bf6c8	129	void bt_err(const char *fmt, ...);
e781b7f7 SJ	130	__printf(1, 2)
e781b7f7 SJ	131	void bt_err_ratelimited(const char *fmt, ...);
3ed7003e JP	132
3ed7003e JP	133	#define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
594b31ea	134	#define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__)
3ed7003e JP	135	#define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
3ed7003e JP	136	#define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
1da177e4	137
e781b7f7 SJ	138	#define BT_ERR_RATELIMITED(fmt, ...) bt_err_ratelimited(fmt "\n", ##__VA_ARGS__)
e781b7f7 SJ	139
6f558b70 LP	140	#define bt_dev_info(hdev, fmt, ...) \
6f558b70 LP	141	BT_INFO("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
594b31ea FD	142	#define bt_dev_warn(hdev, fmt, ...) \
594b31ea FD	143	BT_WARN("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
6f558b70 LP	144	#define bt_dev_err(hdev, fmt, ...) \
	145	BT_ERR("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
	146	#define bt_dev_dbg(hdev, fmt, ...) \
	147	BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
	148
1da177e4 LT	149	/* Connection and socket states */
	150	enum {
	151	BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
	152	BT_OPEN,
	153	BT_BOUND,
	154	BT_LISTEN,
	155	BT_CONNECT,
	156	BT_CONNECT2,
	157	BT_CONFIG,
	158	BT_DISCONN,
	159	BT_CLOSED
	160	};
	161
20d1803a AE	162	/* If unused will be removed by compiler */
	163	static inline const char *state_to_string(int state)
	164	{
	165	switch (state) {
	166	case BT_CONNECTED:
	167	return "BT_CONNECTED";
	168	case BT_OPEN:
	169	return "BT_OPEN";
	170	case BT_BOUND:
	171	return "BT_BOUND";
	172	case BT_LISTEN:
	173	return "BT_LISTEN";
	174	case BT_CONNECT:
	175	return "BT_CONNECT";
	176	case BT_CONNECT2:
	177	return "BT_CONNECT2";
	178	case BT_CONFIG:
	179	return "BT_CONFIG";
	180	case BT_DISCONN:
	181	return "BT_DISCONN";
	182	case BT_CLOSED:
	183	return "BT_CLOSED";
	184	}
	185
	186	return "invalid state";
	187	}
	188
1da177e4 LT	189	/* BD Address */
	190	typedef struct {
	191	__u8 b[6];
66c853cc	192	} __packed bdaddr_t;
1da177e4	193
591f47f3 AG	194	/* BD Address type */
	195	#define BDADDR_BREDR 0x00
	196	#define BDADDR_LE_PUBLIC 0x01
	197	#define BDADDR_LE_RANDOM 0x02
	198
679efe2b JH	199	static inline bool bdaddr_type_is_valid(__u8 type)
	200	{
	201	switch (type) {
	202	case BDADDR_BREDR:
	203	case BDADDR_LE_PUBLIC:
	204	case BDADDR_LE_RANDOM:
	205	return true;
	206	}
	207
	208	return false;
	209	}
	210
	211	static inline bool bdaddr_type_is_le(__u8 type)
	212	{
	213	switch (type) {
	214	case BDADDR_LE_PUBLIC:
	215	case BDADDR_LE_RANDOM:
	216	return true;
	217	}
	218
	219	return false;
	220	}
	221
a59ac2f7 MH	222	#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
a59ac2f7 MH	223	#define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
1da177e4 LT	224
1da177e4 LT	225	/* Copy, swap, convert BD Address */
f53c20e9	226	static inline int bacmp(const bdaddr_t ba1, const bdaddr_t ba2)
1da177e4 LT	227	{
	228	return memcmp(ba1, ba2, sizeof(bdaddr_t));
	229	}
f53c20e9	230	static inline void bacpy(bdaddr_t dst, const bdaddr_t src)
1da177e4 LT	231	{
	232	memcpy(dst, src, sizeof(bdaddr_t));
	233	}
	234
	235	void baswap(bdaddr_t dst, bdaddr_t src);
1da177e4 LT	236
	237	/* Common socket structures and functions */
	238
	239	#define bt_sk(__sk) ((struct bt_sock *) __sk)
	240
	241	struct bt_sock {
	242	struct sock sk;
1da177e4 LT	243	struct list_head accept_q;
1da177e4 LT	244	struct sock *parent;
c5daa683	245	unsigned long flags;
d9763698	246	void (skb_msg_name)(struct sk_buff , void , int );
c5daa683 GP	247	};
	248
	249	enum {
	250	BT_SK_DEFER_SETUP,
	251	BT_SK_SUSPEND,
1da177e4 LT	252	};
	253
	254	struct bt_sock_list {
	255	struct hlist_head head;
	256	rwlock_t lock;
256a06c8	257	#ifdef CONFIG_PROC_FS
256a06c8 MY	258	int (* custom_seq_show)(struct seq_file , void );
256a06c8 MY	259	#endif
1da177e4 LT	260	};
1da177e4 LT	261
ec1b4cf7	262	int bt_sock_register(int proto, const struct net_proto_family *ops);
be9f97f0	263	void bt_sock_unregister(int proto);
1da177e4 LT	264	void bt_sock_link(struct bt_sock_list l, struct sock s);
1da177e4 LT	265	void bt_sock_unlink(struct bt_sock_list l, struct sock s);
1b784140 YX	266	int bt_sock_recvmsg(struct socket sock, struct msghdr msg, size_t len,
	267	int flags);
	268	int bt_sock_stream_recvmsg(struct socket sock, struct msghdr msg,
	269	size_t len, int flags);
c3c7ea65	270	uint bt_sock_poll(struct file file, struct socket sock, poll_table *wait);
3241ad82	271	int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
1da177e4	272	int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
e793dcf0	273	int bt_sock_wait_ready(struct sock *sk, unsigned long flags);
1da177e4 LT	274
	275	void bt_accept_enqueue(struct sock parent, struct sock sk);
	276	void bt_accept_unlink(struct sock *sk);
	277	struct sock bt_accept_dequeue(struct sock parent, struct socket *newsock);
	278
	279	/* Skb helpers */
00e3112c	280	struct l2cap_ctrl {
07758991 MH	281	__u8 sframe:1,
	282	poll:1,
	283	final:1,
	284	fcs:1,
	285	sar:2,
	286	super:2;
	287	__u16 reqseq;
	288	__u16 txseq;
	289	__u8 retries;
a4368ff3 JH	290	__le16 psm;
	291	bdaddr_t bdaddr;
	292	struct l2cap_chan *chan;
00e3112c MM	293	};
00e3112c MM	294
3119ae95 JH	295	struct hci_dev;
3119ae95 JH	296
1904a853	297	typedef void (hci_req_complete_t)(struct hci_dev hdev, u8 status, u16 opcode);
e6214487 JH	298	typedef void (hci_req_complete_skb_t)(struct hci_dev hdev, u8 status,
e6214487 JH	299	u16 opcode, struct sk_buff *skb);
3119ae95	300
44d27137 JH	301	#define HCI_REQ_START BIT(0)
	302	#define HCI_REQ_SKB BIT(1)
	303
242c0ebd MH	304	struct hci_ctrl {
242c0ebd MH	305	__u16 opcode;
44d27137	306	u8 req_flags;
242c0ebd	307	u8 req_event;
44d27137 JH	308	union {
	309	hci_req_complete_t req_complete;
	310	hci_req_complete_skb_t req_complete_skb;
	311	};
db6e3e8d JH	312	};
db6e3e8d JH	313
1da177e4	314	struct bt_skb_cb {
0d48d939	315	__u8 pkt_type;
6368c235	316	__u8 force_active;
33e882a5	317	__u16 expect;
6368c235	318	__u8 incoming:1;
db6e3e8d JH	319	union {
db6e3e8d JH	320	struct l2cap_ctrl l2cap;
242c0ebd	321	struct hci_ctrl hci;
db6e3e8d	322	};
1da177e4	323	};
1c2acffb	324	#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
1da177e4	325
f5c4a42a MH	326	#define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
	327	#define hci_skb_expect(skb) bt_cb((skb))->expect
	328	#define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
	329
dd0fc66f	330	static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
1da177e4 LT	331	{
	332	struct sk_buff *skb;
	333
c3c7ea65	334	skb = alloc_skb(len + BT_SKB_RESERVE, how);
5fcc86bd	335	if (skb)
1da177e4	336	skb_reserve(skb, BT_SKB_RESERVE);
1da177e4 LT	337	return skb;
	338	}
	339
5a9d0a3f WR	340	static inline struct sk_buff bt_skb_send_alloc(struct sock sk,
5a9d0a3f WR	341	unsigned long len, int nb, int *err)
1da177e4 LT	342	{
	343	struct sk_buff *skb;
	344
c3c7ea65	345	skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
5fcc86bd	346	if (skb)
1da177e4	347	skb_reserve(skb, BT_SKB_RESERVE);
e454c844 GP	348
	349	if (!skb && *err)
	350	return NULL;
	351
	352	*err = sock_error(sk);
	353	if (*err)
	354	goto out;
	355
	356	if (sk->sk_shutdown) {
	357	*err = -ECONNRESET;
	358	goto out;
	359	}
1da177e4 LT	360
1da177e4 LT	361	return skb;
e454c844 GP	362
	363	out:
	364	kfree_skb(skb);
	365	return NULL;
1da177e4 LT	366	}
1da177e4 LT	367
e175072f	368	int bt_to_errno(__u16 code);
1da177e4	369
6befc644 MH	370	void hci_sock_set_flag(struct sock *sk, int nr);
6befc644 MH	371	void hci_sock_clear_flag(struct sock *sk, int nr);
c85be545	372	int hci_sock_test_flag(struct sock *sk, int nr);
d0f172b1	373	unsigned short hci_sock_get_channel(struct sock *sk);
6befc644	374
e74e58f8 JP	375	int hci_sock_init(void);
e74e58f8 JP	376	void hci_sock_cleanup(void);
6516455d	377
e74e58f8 JP	378	int bt_sysfs_init(void);
e74e58f8 JP	379	void bt_sysfs_cleanup(void);
6516455d	380
e74e58f8 JP	381	int bt_procfs_init(struct net net, const char name,
	382	struct bt_sock_list *sk_list,
	383	int (seq_show)(struct seq_file , void *));
	384	void bt_procfs_cleanup(struct net net, const char name);
256a06c8	385
aef7d97c	386	extern struct dentry *bt_debugfs;
be9d1227	387
64274518 GP	388	int l2cap_init(void);
64274518 GP	389	void l2cap_exit(void);
64274518	390
ff50e8af	391	#if IS_ENABLED(CONFIG_BT_BREDR)
64274518 GP	392	int sco_init(void);
64274518 GP	393	void sco_exit(void);
ff50e8af AW	394	#else
	395	static inline int sco_init(void)
	396	{
	397	return 0;
	398	}
	399
	400	static inline void sco_exit(void)
	401	{
	402	}
	403	#endif
64274518	404
6d785aa3 JH	405	int mgmt_init(void);
	406	void mgmt_exit(void);
	407
d22015aa OP	408	void bt_sock_reclassify_lock(struct sock *sk, int proto);
d22015aa OP	409
1da177e4	410	#endif /* __BLUETOOTH_H */