[GitHub/mt8127/android_kernel_alcatel_ttab.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_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

__printf(1, 2)
int bt_info(const char *fmt, ...);
__printf(1, 2)
int 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_LOCAL (&(bdaddr_t) {{0, 0, 0, 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;
	bdaddr_t    src;
	bdaddr_t    dst;
	struct list_head accept_q;
	struct sock *parent;
	unsigned long flags;
};

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 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 l2cap_ctrl {
	unsigned int	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);

struct hci_req_ctrl {
	bool			start;
	u8			event;
	hci_req_complete_t	complete;
};

struct bt_skb_cb {
	__u8 pkt_type;
	__u8 incoming;
	__u16 expect;
	__u8 force_active;
	struct l2cap_ctrl control;
	struct hci_req_ctrl req;
};
#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);

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 int  bt_procfs_init(struct net *net, const char *name,
			   struct bt_sock_list* sk_list,
			   int (* seq_show)(struct seq_file *, void *));
extern 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
	68
c4f912e1 MH	69	#define BT_DEFER_SETUP 7
c4f912e1 MH	70
e702112f AE	71	#define BT_FLUSHABLE 8
	72
	73	#define BT_FLUSHABLE_OFF 0
	74	#define BT_FLUSHABLE_ON 1
	75
14b12d0b JG	76	#define BT_POWER 9
	77	struct bt_power {
	78	__u8 force_active;
	79	};
	80	#define BT_POWER_FORCE_ACTIVE_OFF 0
	81	#define BT_POWER_FORCE_ACTIVE_ON 1
	82
c14968b0 MM	83	#define BT_CHANNEL_POLICY 10
	84
	85	/* BR/EDR only (default policy)
	86	* AMP controllers cannot be used.
	87	* Channel move requests from the remote device are denied.
	88	* If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
	89	*/
	90	#define BT_CHANNEL_POLICY_BREDR_ONLY 0
	91
	92	/* BR/EDR Preferred
	93	* Allow use of AMP controllers.
	94	* If the L2CAP channel is currently on AMP, move it to BR/EDR.
	95	* Channel move requests from the remote device are allowed.
	96	*/
	97	#define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
	98
	99	/* AMP Preferred
	100	* Allow use of AMP controllers
	101	* If the L2CAP channel is currently on BR/EDR and AMP controller
	102	* resources are available, initiate a channel move to AMP.
	103	* Channel move requests from the remote device are allowed.
	104	* If the L2CAP socket has not been connected yet, try to create
	105	* and configure the channel directly on an AMP controller rather
	106	* than BR/EDR.
	107	*/
	108	#define BT_CHANNEL_POLICY_AMP_PREFERRED 2
	109
3ed7003e JP	110	__printf(1, 2)
	111	int bt_info(const char *fmt, ...);
	112	__printf(1, 2)
	113	int bt_err(const char *fmt, ...);
	114
	115	#define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
	116	#define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
	117	#define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
1da177e4	118
1da177e4 LT	119	/* Connection and socket states */
	120	enum {
	121	BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
	122	BT_OPEN,
	123	BT_BOUND,
	124	BT_LISTEN,
	125	BT_CONNECT,
	126	BT_CONNECT2,
	127	BT_CONFIG,
	128	BT_DISCONN,
	129	BT_CLOSED
	130	};
	131
20d1803a AE	132	/* If unused will be removed by compiler */
	133	static inline const char *state_to_string(int state)
	134	{
	135	switch (state) {
	136	case BT_CONNECTED:
	137	return "BT_CONNECTED";
	138	case BT_OPEN:
	139	return "BT_OPEN";
	140	case BT_BOUND:
	141	return "BT_BOUND";
	142	case BT_LISTEN:
	143	return "BT_LISTEN";
	144	case BT_CONNECT:
	145	return "BT_CONNECT";
	146	case BT_CONNECT2:
	147	return "BT_CONNECT2";
	148	case BT_CONFIG:
	149	return "BT_CONFIG";
	150	case BT_DISCONN:
	151	return "BT_DISCONN";
	152	case BT_CLOSED:
	153	return "BT_CLOSED";
	154	}
	155
	156	return "invalid state";
	157	}
	158
1da177e4 LT	159	/* BD Address */
	160	typedef struct {
	161	__u8 b[6];
66c853cc	162	} __packed bdaddr_t;
1da177e4	163
591f47f3 AG	164	/* BD Address type */
	165	#define BDADDR_BREDR 0x00
	166	#define BDADDR_LE_PUBLIC 0x01
	167	#define BDADDR_LE_RANDOM 0x02
	168
679efe2b JH	169	static inline bool bdaddr_type_is_valid(__u8 type)
	170	{
	171	switch (type) {
	172	case BDADDR_BREDR:
	173	case BDADDR_LE_PUBLIC:
	174	case BDADDR_LE_RANDOM:
	175	return true;
	176	}
	177
	178	return false;
	179	}
	180
	181	static inline bool bdaddr_type_is_le(__u8 type)
	182	{
	183	switch (type) {
	184	case BDADDR_LE_PUBLIC:
	185	case BDADDR_LE_RANDOM:
	186	return true;
	187	}
	188
	189	return false;
	190	}
	191
c3c7ea65 GP	192	#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0} })
c3c7ea65 GP	193	#define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff} })
1da177e4 LT	194
1da177e4 LT	195	/* Copy, swap, convert BD Address */
f53c20e9	196	static inline int bacmp(const bdaddr_t ba1, const bdaddr_t ba2)
1da177e4 LT	197	{
	198	return memcmp(ba1, ba2, sizeof(bdaddr_t));
	199	}
f53c20e9	200	static inline void bacpy(bdaddr_t dst, const bdaddr_t src)
1da177e4 LT	201	{
	202	memcpy(dst, src, sizeof(bdaddr_t));
	203	}
	204
	205	void baswap(bdaddr_t dst, bdaddr_t src);
1da177e4 LT	206
	207	/* Common socket structures and functions */
	208
	209	#define bt_sk(__sk) ((struct bt_sock *) __sk)
	210
	211	struct bt_sock {
	212	struct sock sk;
	213	bdaddr_t src;
	214	bdaddr_t dst;
	215	struct list_head accept_q;
	216	struct sock *parent;
c5daa683 GP	217	unsigned long flags;
	218	};
	219
	220	enum {
	221	BT_SK_DEFER_SETUP,
	222	BT_SK_SUSPEND,
1da177e4 LT	223	};
	224
	225	struct bt_sock_list {
	226	struct hlist_head head;
	227	rwlock_t lock;
256a06c8	228	#ifdef CONFIG_PROC_FS
256a06c8 MY	229	int (* custom_seq_show)(struct seq_file , void );
256a06c8 MY	230	#endif
1da177e4 LT	231	};
1da177e4 LT	232
ec1b4cf7	233	int bt_sock_register(int proto, const struct net_proto_family *ops);
be9f97f0	234	void bt_sock_unregister(int proto);
1da177e4 LT	235	void bt_sock_link(struct bt_sock_list l, struct sock s);
1da177e4 LT	236	void bt_sock_unlink(struct bt_sock_list l, struct sock s);
5a9d0a3f WR	237	int bt_sock_recvmsg(struct kiocb iocb, struct socket sock,
5a9d0a3f WR	238	struct msghdr *msg, size_t len, int flags);
796c86ee MM	239	int bt_sock_stream_recvmsg(struct kiocb iocb, struct socket sock,
796c86ee MM	240	struct msghdr *msg, size_t len, int flags);
c3c7ea65	241	uint bt_sock_poll(struct file file, struct socket sock, poll_table *wait);
3241ad82	242	int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
1da177e4 LT	243	int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
	244
	245	void bt_accept_enqueue(struct sock parent, struct sock sk);
	246	void bt_accept_unlink(struct sock *sk);
	247	struct sock bt_accept_dequeue(struct sock parent, struct socket *newsock);
	248
	249	/* Skb helpers */
00e3112c	250	struct l2cap_ctrl {
c3c7ea65 GP	251	unsigned int sframe:1,
	252	poll:1,
	253	final:1,
	254	fcs:1,
	255	sar:2,
	256	super:2;
00e3112c MM	257	__u16 reqseq;
	258	__u16 txseq;
	259	__u8 retries;
	260	};
	261
3119ae95 JH	262	struct hci_dev;
	263
	264	typedef void (hci_req_complete_t)(struct hci_dev hdev, u8 status);
	265
	266	struct hci_req_ctrl {
	267	bool start;
02350a72	268	u8 event;
3119ae95 JH	269	hci_req_complete_t complete;
	270	};
	271
1da177e4	272	struct bt_skb_cb {
0d48d939 MH	273	__u8 pkt_type;
0d48d939 MH	274	__u8 incoming;
33e882a5	275	__u16 expect;
14b12d0b	276	__u8 force_active;
00e3112c	277	struct l2cap_ctrl control;
3119ae95	278	struct hci_req_ctrl req;
1da177e4	279	};
1c2acffb	280	#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
1da177e4	281
dd0fc66f	282	static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
1da177e4 LT	283	{
	284	struct sk_buff *skb;
	285
c3c7ea65 GP	286	skb = alloc_skb(len + BT_SKB_RESERVE, how);
c3c7ea65 GP	287	if (skb) {
1da177e4 LT	288	skb_reserve(skb, BT_SKB_RESERVE);
	289	bt_cb(skb)->incoming = 0;
	290	}
	291	return skb;
	292	}
	293
5a9d0a3f WR	294	static inline struct sk_buff bt_skb_send_alloc(struct sock sk,
5a9d0a3f WR	295	unsigned long len, int nb, int *err)
1da177e4 LT	296	{
	297	struct sk_buff *skb;
	298
c3c7ea65 GP	299	skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
c3c7ea65 GP	300	if (skb) {
1da177e4 LT	301	skb_reserve(skb, BT_SKB_RESERVE);
	302	bt_cb(skb)->incoming = 0;
	303	}
e454c844 GP	304
	305	if (!skb && *err)
	306	return NULL;
	307
	308	*err = sock_error(sk);
	309	if (*err)
	310	goto out;
	311
	312	if (sk->sk_shutdown) {
	313	*err = -ECONNRESET;
	314	goto out;
	315	}
1da177e4 LT	316
1da177e4 LT	317	return skb;
e454c844 GP	318
	319	out:
	320	kfree_skb(skb);
	321	return NULL;
1da177e4 LT	322	}
1da177e4 LT	323
e175072f	324	int bt_to_errno(__u16 code);
1da177e4	325
6516455d	326	extern int hci_sock_init(void);
04005dd9	327	extern void hci_sock_cleanup(void);
6516455d MH	328
	329	extern int bt_sysfs_init(void);
	330	extern void bt_sysfs_cleanup(void);
	331
b0316615	332	extern int bt_procfs_init(struct net net, const char name,
256a06c8 MY	333	struct bt_sock_list* sk_list,
	334	int (* seq_show)(struct seq_file , void ));
	335	extern void bt_procfs_cleanup(struct net net, const char name);
	336
aef7d97c	337	extern struct dentry *bt_debugfs;
be9d1227	338
64274518 GP	339	int l2cap_init(void);
64274518 GP	340	void l2cap_exit(void);
64274518	341
64274518 GP	342	int sco_init(void);
64274518 GP	343	void sco_exit(void);
64274518	344
d22015aa OP	345	void bt_sock_reclassify_lock(struct sock *sk, int proto);
d22015aa OP	346
1da177e4	347	#endif /* __BLUETOOTH_H */