[deliverable/linux.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>

#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);

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