[mirror_ubuntu-jammy-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>

#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_err(const char *fmt, ...);

#define BT_INFO(fmt, ...)	bt_info(fmt "\n", ##__VA_ARGS__)
#define BT_ERR(fmt, ...)	bt_err(fmt "\n", ##__VA_ARGS__)
#define BT_DBG(fmt, ...)	pr_debug(fmt "\n", ##__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;
};

struct hci_dev;

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

struct bt_skb_cb {
	__u8 pkt_type;
	__u8 force_active;
	__u16 opcode;
	__u16 expect;
	__u8 incoming:1;
	__u8 req_start:1;
	u8 req_event;
	hci_req_complete_t req_complete;
	struct l2cap_chan *chan;
	struct l2cap_ctrl control;
	bdaddr_t bdaddr;
	__le16 psm;
};
#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;

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

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

	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);

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);

int sco_init(void);
void sco_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)
2b0bf6c8	125	void bt_err(const char *fmt, ...);
3ed7003e JP	126
	127	#define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
	128	#define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
	129	#define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
1da177e4	130
1da177e4 LT	131	/* Connection and socket states */
	132	enum {
	133	BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
	134	BT_OPEN,
	135	BT_BOUND,
	136	BT_LISTEN,
	137	BT_CONNECT,
	138	BT_CONNECT2,
	139	BT_CONFIG,
	140	BT_DISCONN,
	141	BT_CLOSED
	142	};
	143
20d1803a AE	144	/* If unused will be removed by compiler */
	145	static inline const char *state_to_string(int state)
	146	{
	147	switch (state) {
	148	case BT_CONNECTED:
	149	return "BT_CONNECTED";
	150	case BT_OPEN:
	151	return "BT_OPEN";
	152	case BT_BOUND:
	153	return "BT_BOUND";
	154	case BT_LISTEN:
	155	return "BT_LISTEN";
	156	case BT_CONNECT:
	157	return "BT_CONNECT";
	158	case BT_CONNECT2:
	159	return "BT_CONNECT2";
	160	case BT_CONFIG:
	161	return "BT_CONFIG";
	162	case BT_DISCONN:
	163	return "BT_DISCONN";
	164	case BT_CLOSED:
	165	return "BT_CLOSED";
	166	}
	167
	168	return "invalid state";
	169	}
	170
1da177e4 LT	171	/* BD Address */
	172	typedef struct {
	173	__u8 b[6];
66c853cc	174	} __packed bdaddr_t;
1da177e4	175
591f47f3 AG	176	/* BD Address type */
	177	#define BDADDR_BREDR 0x00
	178	#define BDADDR_LE_PUBLIC 0x01
	179	#define BDADDR_LE_RANDOM 0x02
	180
679efe2b JH	181	static inline bool bdaddr_type_is_valid(__u8 type)
	182	{
	183	switch (type) {
	184	case BDADDR_BREDR:
	185	case BDADDR_LE_PUBLIC:
	186	case BDADDR_LE_RANDOM:
	187	return true;
	188	}
	189
	190	return false;
	191	}
	192
	193	static inline bool bdaddr_type_is_le(__u8 type)
	194	{
	195	switch (type) {
	196	case BDADDR_LE_PUBLIC:
	197	case BDADDR_LE_RANDOM:
	198	return true;
	199	}
	200
	201	return false;
	202	}
	203
a59ac2f7 MH	204	#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
a59ac2f7 MH	205	#define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
1da177e4 LT	206
1da177e4 LT	207	/* Copy, swap, convert BD Address */
f53c20e9	208	static inline int bacmp(const bdaddr_t ba1, const bdaddr_t ba2)
1da177e4 LT	209	{
	210	return memcmp(ba1, ba2, sizeof(bdaddr_t));
	211	}
f53c20e9	212	static inline void bacpy(bdaddr_t dst, const bdaddr_t src)
1da177e4 LT	213	{
	214	memcpy(dst, src, sizeof(bdaddr_t));
	215	}
	216
	217	void baswap(bdaddr_t dst, bdaddr_t src);
1da177e4 LT	218
	219	/* Common socket structures and functions */
	220
	221	#define bt_sk(__sk) ((struct bt_sock *) __sk)
	222
	223	struct bt_sock {
	224	struct sock sk;
1da177e4 LT	225	struct list_head accept_q;
1da177e4 LT	226	struct sock *parent;
c5daa683	227	unsigned long flags;
d9763698	228	void (skb_msg_name)(struct sk_buff , void , int );
c5daa683 GP	229	};
	230
	231	enum {
	232	BT_SK_DEFER_SETUP,
	233	BT_SK_SUSPEND,
1da177e4 LT	234	};
	235
	236	struct bt_sock_list {
	237	struct hlist_head head;
	238	rwlock_t lock;
256a06c8	239	#ifdef CONFIG_PROC_FS
256a06c8 MY	240	int (* custom_seq_show)(struct seq_file , void );
256a06c8 MY	241	#endif
1da177e4 LT	242	};
1da177e4 LT	243
ec1b4cf7	244	int bt_sock_register(int proto, const struct net_proto_family *ops);
be9f97f0	245	void bt_sock_unregister(int proto);
1da177e4 LT	246	void bt_sock_link(struct bt_sock_list l, struct sock s);
1da177e4 LT	247	void bt_sock_unlink(struct bt_sock_list l, struct sock s);
1b784140 YX	248	int bt_sock_recvmsg(struct socket sock, struct msghdr msg, size_t len,
	249	int flags);
	250	int bt_sock_stream_recvmsg(struct socket sock, struct msghdr msg,
	251	size_t len, int flags);
c3c7ea65	252	uint bt_sock_poll(struct file file, struct socket sock, poll_table *wait);
3241ad82	253	int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
1da177e4	254	int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
e793dcf0	255	int bt_sock_wait_ready(struct sock *sk, unsigned long flags);
1da177e4 LT	256
	257	void bt_accept_enqueue(struct sock parent, struct sock sk);
	258	void bt_accept_unlink(struct sock *sk);
	259	struct sock bt_accept_dequeue(struct sock parent, struct socket *newsock);
	260
	261	/* Skb helpers */
00e3112c	262	struct l2cap_ctrl {
07758991 MH	263	__u8 sframe:1,
	264	poll:1,
	265	final:1,
	266	fcs:1,
	267	sar:2,
	268	super:2;
	269	__u16 reqseq;
	270	__u16 txseq;
	271	__u8 retries;
00e3112c MM	272	};
00e3112c MM	273
3119ae95 JH	274	struct hci_dev;
3119ae95 JH	275
1904a853	276	typedef void (hci_req_complete_t)(struct hci_dev hdev, u8 status, u16 opcode);
3119ae95	277
1da177e4	278	struct bt_skb_cb {
0d48d939	279	__u8 pkt_type;
6368c235	280	__u8 force_active;
43e73e4e	281	__u16 opcode;
33e882a5	282	__u16 expect;
6368c235 EB	283	__u8 incoming:1;
6368c235 EB	284	__u8 req_start:1;
49a6fe05 EB	285	u8 req_event;
49a6fe05 EB	286	hci_req_complete_t req_complete;
0e790c64	287	struct l2cap_chan *chan;
00e3112c	288	struct l2cap_ctrl control;
2edf870d MH	289	bdaddr_t bdaddr;
2edf870d MH	290	__le16 psm;
1da177e4	291	};
1c2acffb	292	#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
1da177e4	293
dd0fc66f	294	static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
1da177e4 LT	295	{
	296	struct sk_buff *skb;
	297
c3c7ea65 GP	298	skb = alloc_skb(len + BT_SKB_RESERVE, how);
c3c7ea65 GP	299	if (skb) {
1da177e4 LT	300	skb_reserve(skb, BT_SKB_RESERVE);
	301	bt_cb(skb)->incoming = 0;
	302	}
	303	return skb;
	304	}
	305
5a9d0a3f WR	306	static inline struct sk_buff bt_skb_send_alloc(struct sock sk,
5a9d0a3f WR	307	unsigned long len, int nb, int *err)
1da177e4 LT	308	{
	309	struct sk_buff *skb;
	310
c3c7ea65 GP	311	skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
c3c7ea65 GP	312	if (skb) {
1da177e4 LT	313	skb_reserve(skb, BT_SKB_RESERVE);
	314	bt_cb(skb)->incoming = 0;
	315	}
e454c844 GP	316
	317	if (!skb && *err)
	318	return NULL;
	319
	320	*err = sock_error(sk);
	321	if (*err)
	322	goto out;
	323
	324	if (sk->sk_shutdown) {
	325	*err = -ECONNRESET;
	326	goto out;
	327	}
1da177e4 LT	328
1da177e4 LT	329	return skb;
e454c844 GP	330
	331	out:
	332	kfree_skb(skb);
	333	return NULL;
1da177e4 LT	334	}
1da177e4 LT	335
e175072f	336	int bt_to_errno(__u16 code);
1da177e4	337
e74e58f8 JP	338	int hci_sock_init(void);
e74e58f8 JP	339	void hci_sock_cleanup(void);
6516455d	340
e74e58f8 JP	341	int bt_sysfs_init(void);
e74e58f8 JP	342	void bt_sysfs_cleanup(void);
6516455d	343
e74e58f8 JP	344	int bt_procfs_init(struct net net, const char name,
	345	struct bt_sock_list *sk_list,
	346	int (seq_show)(struct seq_file , void *));
	347	void bt_procfs_cleanup(struct net net, const char name);
256a06c8	348
aef7d97c	349	extern struct dentry *bt_debugfs;
be9d1227	350
64274518 GP	351	int l2cap_init(void);
64274518 GP	352	void l2cap_exit(void);
64274518	353
64274518 GP	354	int sco_init(void);
64274518 GP	355	void sco_exit(void);
64274518	356
d22015aa OP	357	void bt_sock_reclassify_lock(struct sock *sk, int proto);
d22015aa OP	358
1da177e4	359	#endif /* __BLUETOOTH_H */