

#include <linux/refcount.h>

#ifndef __RFCOMM_H
#define __RFCOMM_H

#define RFCOMM_CONN_TIMEOUT (HZ * 30)
#define RFCOMM_DISC_TIMEOUT (HZ * 20)
#define RFCOMM_AUTH_TIMEOUT (HZ * 25)
#define RFCOMM_IDLE_TIMEOUT (HZ * 2)

#define RFCOMM_DEFAULT_MTU	127
#define RFCOMM_DEFAULT_CREDITS	7

#define RFCOMM_MAX_CREDITS	40

#define RFCOMM_SKB_HEAD_RESERVE	8
#define RFCOMM_SKB_TAIL_RESERVE	2
#define RFCOMM_SKB_RESERVE  (RFCOMM_SKB_HEAD_RESERVE + RFCOMM_SKB_TAIL_RESERVE)

#define RFCOMM_SABM	0x2f
#define RFCOMM_DISC	0x43
#define RFCOMM_UA	0x63
#define RFCOMM_DM	0x0f
#define RFCOMM_UIH	0xef

#define RFCOMM_TEST	0x08
#define RFCOMM_FCON	0x28
#define RFCOMM_FCOFF	0x18
#define RFCOMM_MSC	0x38
#define RFCOMM_RPN	0x24
#define RFCOMM_RLS	0x14
#define RFCOMM_PN	0x20
#define RFCOMM_NSC	0x04

#define RFCOMM_V24_FC	0x02
#define RFCOMM_V24_RTC	0x04
#define RFCOMM_V24_RTR	0x08
#define RFCOMM_V24_IC	0x40
#define RFCOMM_V24_DV	0x80

#define RFCOMM_RPN_BR_2400	0x0
#define RFCOMM_RPN_BR_4800	0x1
#define RFCOMM_RPN_BR_7200	0x2
#define RFCOMM_RPN_BR_9600	0x3
#define RFCOMM_RPN_BR_19200	0x4
#define RFCOMM_RPN_BR_38400	0x5
#define RFCOMM_RPN_BR_57600	0x6
#define RFCOMM_RPN_BR_115200	0x7
#define RFCOMM_RPN_BR_230400	0x8

#define RFCOMM_RPN_DATA_5	0x0
#define RFCOMM_RPN_DATA_6	0x1
#define RFCOMM_RPN_DATA_7	0x2
#define RFCOMM_RPN_DATA_8	0x3

#define RFCOMM_RPN_STOP_1	0
#define RFCOMM_RPN_STOP_15	1

#define RFCOMM_RPN_PARITY_NONE	0x0
#define RFCOMM_RPN_PARITY_ODD	0x1
#define RFCOMM_RPN_PARITY_EVEN	0x3
#define RFCOMM_RPN_PARITY_MARK	0x5
#define RFCOMM_RPN_PARITY_SPACE	0x7

#define RFCOMM_RPN_FLOW_NONE	0x00

#define RFCOMM_RPN_XON_CHAR	0x11
#define RFCOMM_RPN_XOFF_CHAR	0x13

#define RFCOMM_RPN_PM_BITRATE		0x0001
#define RFCOMM_RPN_PM_DATA		0x0002
#define RFCOMM_RPN_PM_STOP		0x0004
#define RFCOMM_RPN_PM_PARITY		0x0008
#define RFCOMM_RPN_PM_PARITY_TYPE	0x0010
#define RFCOMM_RPN_PM_XON		0x0020
#define RFCOMM_RPN_PM_XOFF		0x0040
#define RFCOMM_RPN_PM_FLOW		0x3F00

#define RFCOMM_RPN_PM_ALL		0x3F7F

struct rfcomm_hdr {
	u8 addr;
	u8 ctrl;
	u8 len;    
} __packed;

struct rfcomm_cmd {
	u8 addr;
	u8 ctrl;
	u8 len;
	u8 fcs;
} __packed;

struct rfcomm_mcc {
	u8 type;
	u8 len;
} __packed;

struct rfcomm_pn {
	u8  dlci;
	u8  flow_ctrl;
	u8  priority;
	u8  ack_timer;
	__le16 mtu;
	u8  max_retrans;
	u8  credits;
} __packed;

struct rfcomm_rpn {
	u8  dlci;
	u8  bit_rate;
	u8  line_settings;
	u8  flow_ctrl;
	u8  xon_char;
	u8  xoff_char;
	__le16 param_mask;
} __packed;

struct rfcomm_rls {
	u8  dlci;
	u8  status;
} __packed;

struct rfcomm_msc {
	u8  dlci;
	u8  v24_sig;
} __packed;



struct rfcomm_session {
	struct list_head list;
	struct socket   *sock;
	struct timer_list timer;
	unsigned long    state;
	unsigned long    flags;
	int              initiator;

	
	int    cfc;
	uint   mtu;

	struct list_head dlcs;
};

struct rfcomm_dlc {
	struct list_head      list;
	struct rfcomm_session *session;
	struct sk_buff_head   tx_queue;
	struct timer_list     timer;

	struct mutex  lock;
	unsigned long state;
	unsigned long flags;
	refcount_t    refcnt;
	u8            dlci;
	u8            addr;
	u8            priority;
	u8            v24_sig;
	u8            remote_v24_sig;
	u8            mscex;
	u8            out;
	u8            sec_level;
	u8            role_switch;
	u32           defer_setup;

	uint          mtu;
	uint          cfc;
	uint          rx_credits;
	uint          tx_credits;

	void          *owner;

	void (*data_ready)(struct rfcomm_dlc *d, struct sk_buff *skb);
	void (*state_change)(struct rfcomm_dlc *d, int err);
	void (*modem_status)(struct rfcomm_dlc *d, u8 v24_sig);
};


#define RFCOMM_RX_THROTTLED 0
#define RFCOMM_TX_THROTTLED 1
#define RFCOMM_TIMED_OUT    2
#define RFCOMM_MSC_PENDING  3
#define RFCOMM_SEC_PENDING  4
#define RFCOMM_AUTH_PENDING 5
#define RFCOMM_AUTH_ACCEPT  6
#define RFCOMM_AUTH_REJECT  7
#define RFCOMM_DEFER_SETUP  8
#define RFCOMM_ENC_DROP     9


#define RFCOMM_SCHED_WAKEUP 31


#define RFCOMM_MSCEX_TX     1
#define RFCOMM_MSCEX_RX     2
#define RFCOMM_MSCEX_OK     (RFCOMM_MSCEX_TX + RFCOMM_MSCEX_RX)


#define RFCOMM_CFC_UNKNOWN  -1
#define RFCOMM_CFC_DISABLED 0
#define RFCOMM_CFC_ENABLED  RFCOMM_MAX_CREDITS


int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,
			u8 bit_rate, u8 data_bits, u8 stop_bits,
			u8 parity, u8 flow_ctrl_settings,
			u8 xon_char, u8 xoff_char, u16 param_mask);


struct rfcomm_dlc *rfcomm_dlc_alloc(gfp_t prio);
void rfcomm_dlc_free(struct rfcomm_dlc *d);
int  rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst,
								u8 channel);
int  rfcomm_dlc_close(struct rfcomm_dlc *d, int reason);
int  rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb);
void rfcomm_dlc_send_noerror(struct rfcomm_dlc *d, struct sk_buff *skb);
int  rfcomm_dlc_set_modem_status(struct rfcomm_dlc *d, u8 v24_sig);
int  rfcomm_dlc_get_modem_status(struct rfcomm_dlc *d, u8 *v24_sig);
void rfcomm_dlc_accept(struct rfcomm_dlc *d);
struct rfcomm_dlc *rfcomm_dlc_exists(bdaddr_t *src, bdaddr_t *dst, u8 channel);

#define rfcomm_dlc_lock(d)     mutex_lock(&d->lock)
#define rfcomm_dlc_unlock(d)   mutex_unlock(&d->lock)

static inline void rfcomm_dlc_hold(struct rfcomm_dlc *d)
{
	refcount_inc(&d->refcnt);
}

static inline void rfcomm_dlc_put(struct rfcomm_dlc *d)
{
	if (refcount_dec_and_test(&d->refcnt))
		rfcomm_dlc_free(d);
}

void __rfcomm_dlc_throttle(struct rfcomm_dlc *d);
void __rfcomm_dlc_unthrottle(struct rfcomm_dlc *d);

static inline void rfcomm_dlc_throttle(struct rfcomm_dlc *d)
{
	if (!test_and_set_bit(RFCOMM_RX_THROTTLED, &d->flags))
		__rfcomm_dlc_throttle(d);
}

static inline void rfcomm_dlc_unthrottle(struct rfcomm_dlc *d)
{
	if (test_and_clear_bit(RFCOMM_RX_THROTTLED, &d->flags))
		__rfcomm_dlc_unthrottle(d);
}


void   rfcomm_session_getaddr(struct rfcomm_session *s, bdaddr_t *src,
								bdaddr_t *dst);


struct sockaddr_rc {
	sa_family_t	rc_family;
	bdaddr_t	rc_bdaddr;
	u8		rc_channel;
};

#define RFCOMM_CONNINFO	0x02
struct rfcomm_conninfo {
	__u16 hci_handle;
	__u8  dev_class[3];
};

#define RFCOMM_LM	0x03
#define RFCOMM_LM_MASTER	0x0001
#define RFCOMM_LM_AUTH		0x0002
#define RFCOMM_LM_ENCRYPT	0x0004
#define RFCOMM_LM_TRUSTED	0x0008
#define RFCOMM_LM_RELIABLE	0x0010
#define RFCOMM_LM_SECURE	0x0020
#define RFCOMM_LM_FIPS		0x0040

#define rfcomm_pi(sk) ((struct rfcomm_pinfo *) sk)

struct rfcomm_pinfo {
	struct bt_sock bt;
	bdaddr_t src;
	bdaddr_t dst;
	struct rfcomm_dlc   *dlc;
	u8     channel;
	u8     sec_level;
	u8     role_switch;
};

int  rfcomm_init_sockets(void);
void rfcomm_cleanup_sockets(void);

int  rfcomm_connect_ind(struct rfcomm_session *s, u8 channel,
							struct rfcomm_dlc **d);


#define RFCOMM_MAX_DEV  256

#define RFCOMMCREATEDEV		_IOW('R', 200, int)
#define RFCOMMRELEASEDEV	_IOW('R', 201, int)
#define RFCOMMGETDEVLIST	_IOR('R', 210, int)
#define RFCOMMGETDEVINFO	_IOR('R', 211, int)
#define RFCOMMSTEALDLC		_IOW('R', 220, int)


#define RFCOMM_REUSE_DLC      0
#define RFCOMM_RELEASE_ONHUP  1
#define RFCOMM_HANGUP_NOW     2
#define RFCOMM_TTY_ATTACHED   3
#define RFCOMM_DEFUNCT_BIT4   4	  


#define RFCOMM_DEV_RELEASED   0
#define RFCOMM_TTY_OWNED      1

struct rfcomm_dev_req {
	s16      dev_id;
	u32      flags;
	bdaddr_t src;
	bdaddr_t dst;
	u8       channel;
};

struct rfcomm_dev_info {
	s16      id;
	u32      flags;
	u16      state;
	bdaddr_t src;
	bdaddr_t dst;
	u8       channel;
};

struct rfcomm_dev_list_req {
	u16      dev_num;
	struct   rfcomm_dev_info dev_info[];
};

int  rfcomm_dev_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);

#ifdef CONFIG_BT_RFCOMM_TTY
int  rfcomm_init_ttys(void);
void rfcomm_cleanup_ttys(void);
#else
static inline int rfcomm_init_ttys(void)
{
	return 0;
}
static inline void rfcomm_cleanup_ttys(void)
{
}
#endif
#endif 
