[deliverable/linux.git] / include / net / bluetooth / l2cap.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 __L2CAP_H
#define __L2CAP_H

/* L2CAP defaults */
#define L2CAP_DEFAULT_MTU		672
#define L2CAP_DEFAULT_MIN_MTU		48
#define L2CAP_DEFAULT_FLUSH_TO		0xffff
#define L2CAP_DEFAULT_TX_WINDOW		63
#define L2CAP_DEFAULT_MAX_TX		3
#define L2CAP_DEFAULT_RETRANS_TO	1000    /* 1 second */
#define L2CAP_DEFAULT_MONITOR_TO	12000   /* 12 seconds */
#define L2CAP_DEFAULT_MAX_PDU_SIZE	672
#define L2CAP_DEFAULT_ACK_TO		200
#define L2CAP_LOCAL_BUSY_TRIES		12

#define L2CAP_CONN_TIMEOUT	(40000) /* 40 seconds */
#define L2CAP_INFO_TIMEOUT	(4000)  /*  4 seconds */

/* L2CAP socket address */
struct sockaddr_l2 {
	sa_family_t	l2_family;
	__le16		l2_psm;
	bdaddr_t	l2_bdaddr;
	__le16		l2_cid;
};

/* L2CAP socket options */
#define L2CAP_OPTIONS	0x01
struct l2cap_options {
	__u16 omtu;
	__u16 imtu;
	__u16 flush_to;
	__u8  mode;
	__u8  fcs;
	__u8  max_tx;
	__u16 txwin_size;
};

#define L2CAP_CONNINFO	0x02
struct l2cap_conninfo {
	__u16 hci_handle;
	__u8  dev_class[3];
};

#define L2CAP_LM	0x03
#define L2CAP_LM_MASTER		0x0001
#define L2CAP_LM_AUTH		0x0002
#define L2CAP_LM_ENCRYPT	0x0004
#define L2CAP_LM_TRUSTED	0x0008
#define L2CAP_LM_RELIABLE	0x0010
#define L2CAP_LM_SECURE		0x0020

/* L2CAP command codes */
#define L2CAP_COMMAND_REJ	0x01
#define L2CAP_CONN_REQ		0x02
#define L2CAP_CONN_RSP		0x03
#define L2CAP_CONF_REQ		0x04
#define L2CAP_CONF_RSP		0x05
#define L2CAP_DISCONN_REQ	0x06
#define L2CAP_DISCONN_RSP	0x07
#define L2CAP_ECHO_REQ		0x08
#define L2CAP_ECHO_RSP		0x09
#define L2CAP_INFO_REQ		0x0a
#define L2CAP_INFO_RSP		0x0b

/* L2CAP feature mask */
#define L2CAP_FEAT_FLOWCTL	0x00000001
#define L2CAP_FEAT_RETRANS	0x00000002
#define L2CAP_FEAT_ERTM		0x00000008
#define L2CAP_FEAT_STREAMING	0x00000010
#define L2CAP_FEAT_FCS		0x00000020
#define L2CAP_FEAT_FIXED_CHAN	0x00000080

/* L2CAP checksum option */
#define L2CAP_FCS_NONE		0x00
#define L2CAP_FCS_CRC16		0x01

/* L2CAP Control Field bit masks */
#define L2CAP_CTRL_SAR               0xC000
#define L2CAP_CTRL_REQSEQ            0x3F00
#define L2CAP_CTRL_TXSEQ             0x007E
#define L2CAP_CTRL_RETRANS           0x0080
#define L2CAP_CTRL_FINAL             0x0080
#define L2CAP_CTRL_POLL              0x0010
#define L2CAP_CTRL_SUPERVISE         0x000C
#define L2CAP_CTRL_FRAME_TYPE        0x0001 /* I- or S-Frame */

#define L2CAP_CTRL_TXSEQ_SHIFT      1
#define L2CAP_CTRL_REQSEQ_SHIFT     8
#define L2CAP_CTRL_SAR_SHIFT       14

/* L2CAP Supervisory Function */
#define L2CAP_SUPER_RCV_READY           0x0000
#define L2CAP_SUPER_REJECT              0x0004
#define L2CAP_SUPER_RCV_NOT_READY       0x0008
#define L2CAP_SUPER_SELECT_REJECT       0x000C

/* L2CAP Segmentation and Reassembly */
#define L2CAP_SDU_UNSEGMENTED       0x0000
#define L2CAP_SDU_START             0x4000
#define L2CAP_SDU_END               0x8000
#define L2CAP_SDU_CONTINUE          0xC000

/* L2CAP structures */
struct l2cap_hdr {
	__le16     len;
	__le16     cid;
} __attribute__ ((packed));
#define L2CAP_HDR_SIZE		4

struct l2cap_cmd_hdr {
	__u8       code;
	__u8       ident;
	__le16     len;
} __attribute__ ((packed));
#define L2CAP_CMD_HDR_SIZE	4

struct l2cap_cmd_rej {
	__le16     reason;
} __attribute__ ((packed));

struct l2cap_conn_req {
	__le16     psm;
	__le16     scid;
} __attribute__ ((packed));

struct l2cap_conn_rsp {
	__le16     dcid;
	__le16     scid;
	__le16     result;
	__le16     status;
} __attribute__ ((packed));

/* channel indentifier */
#define L2CAP_CID_SIGNALING	0x0001
#define L2CAP_CID_CONN_LESS	0x0002
#define L2CAP_CID_DYN_START	0x0040
#define L2CAP_CID_DYN_END	0xffff

/* connect result */
#define L2CAP_CR_SUCCESS	0x0000
#define L2CAP_CR_PEND		0x0001
#define L2CAP_CR_BAD_PSM	0x0002
#define L2CAP_CR_SEC_BLOCK	0x0003
#define L2CAP_CR_NO_MEM		0x0004

/* connect status */
#define L2CAP_CS_NO_INFO	0x0000
#define L2CAP_CS_AUTHEN_PEND	0x0001
#define L2CAP_CS_AUTHOR_PEND	0x0002

struct l2cap_conf_req {
	__le16     dcid;
	__le16     flags;
	__u8       data[0];
} __attribute__ ((packed));

struct l2cap_conf_rsp {
	__le16     scid;
	__le16     flags;
	__le16     result;
	__u8       data[0];
} __attribute__ ((packed));

#define L2CAP_CONF_SUCCESS	0x0000
#define L2CAP_CONF_UNACCEPT	0x0001
#define L2CAP_CONF_REJECT	0x0002
#define L2CAP_CONF_UNKNOWN	0x0003

struct l2cap_conf_opt {
	__u8       type;
	__u8       len;
	__u8       val[0];
} __attribute__ ((packed));
#define L2CAP_CONF_OPT_SIZE	2

#define L2CAP_CONF_HINT		0x80
#define L2CAP_CONF_MASK		0x7f

#define L2CAP_CONF_MTU		0x01
#define L2CAP_CONF_FLUSH_TO	0x02
#define L2CAP_CONF_QOS		0x03
#define L2CAP_CONF_RFC		0x04
#define L2CAP_CONF_FCS		0x05

#define L2CAP_CONF_MAX_SIZE	22

struct l2cap_conf_rfc {
	__u8       mode;
	__u8       txwin_size;
	__u8       max_transmit;
	__le16     retrans_timeout;
	__le16     monitor_timeout;
	__le16     max_pdu_size;
} __attribute__ ((packed));

#define L2CAP_MODE_BASIC	0x00
#define L2CAP_MODE_RETRANS	0x01
#define L2CAP_MODE_FLOWCTL	0x02
#define L2CAP_MODE_ERTM		0x03
#define L2CAP_MODE_STREAMING	0x04

struct l2cap_disconn_req {
	__le16     dcid;
	__le16     scid;
} __attribute__ ((packed));

struct l2cap_disconn_rsp {
	__le16     dcid;
	__le16     scid;
} __attribute__ ((packed));

struct l2cap_info_req {
	__le16      type;
} __attribute__ ((packed));

struct l2cap_info_rsp {
	__le16      type;
	__le16      result;
	__u8        data[0];
} __attribute__ ((packed));

/* info type */
#define L2CAP_IT_CL_MTU     0x0001
#define L2CAP_IT_FEAT_MASK  0x0002
#define L2CAP_IT_FIXED_CHAN 0x0003

/* info result */
#define L2CAP_IR_SUCCESS    0x0000
#define L2CAP_IR_NOTSUPP    0x0001

/* ----- L2CAP connections ----- */
struct l2cap_chan_list {
	struct sock	*head;
	rwlock_t	lock;
	long		num;
};

struct l2cap_conn {
	struct hci_conn	*hcon;

	bdaddr_t	*dst;
	bdaddr_t	*src;

	unsigned int	mtu;

	__u32		feat_mask;

	__u8		info_state;
	__u8		info_ident;

	struct timer_list info_timer;

	spinlock_t	lock;

	struct sk_buff *rx_skb;
	__u32		rx_len;
	__u8		rx_ident;
	__u8		tx_ident;

	__u8		disc_reason;

	struct l2cap_chan_list chan_list;
};

#define L2CAP_INFO_CL_MTU_REQ_SENT	0x01
#define L2CAP_INFO_FEAT_MASK_REQ_SENT	0x04
#define L2CAP_INFO_FEAT_MASK_REQ_DONE	0x08

/* ----- L2CAP channel and socket info ----- */
#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
#define TX_QUEUE(sk) (&l2cap_pi(sk)->tx_queue)
#define SREJ_QUEUE(sk) (&l2cap_pi(sk)->srej_queue)
#define BUSY_QUEUE(sk) (&l2cap_pi(sk)->busy_queue)
#define SREJ_LIST(sk) (&l2cap_pi(sk)->srej_l.list)

struct srej_list {
	__u8	tx_seq;
	struct list_head list;
};

struct l2cap_pinfo {
	struct bt_sock	bt;
	__le16		psm;
	__u16		dcid;
	__u16		scid;

	__u16		imtu;
	__u16		omtu;
	__u16		flush_to;
	__u8		mode;
	__u8		num_conf_req;
	__u8		num_conf_rsp;

	__u8		fcs;
	__u8		sec_level;
	__u8		role_switch;
	__u8		force_reliable;

	__u8		conf_req[64];
	__u8		conf_len;
	__u8		conf_state;
	__u16		conn_state;

	__u8		next_tx_seq;
	__u8		expected_ack_seq;
	__u8		expected_tx_seq;
	__u8		buffer_seq;
	__u8		buffer_seq_srej;
	__u8		srej_save_reqseq;
	__u8		frames_sent;
	__u8		unacked_frames;
	__u8		retry_count;
	__u8		num_acked;
	__u16		sdu_len;
	__u16		partial_sdu_len;
	struct sk_buff	*sdu;

	__u8		ident;

	__u8		tx_win;
	__u8		max_tx;
	__u8		remote_tx_win;
	__u8		remote_max_tx;
	__u16		retrans_timeout;
	__u16		monitor_timeout;
	__u16		remote_mps;
	__u16		mps;

	__le16		sport;

	struct timer_list	retrans_timer;
	struct timer_list	monitor_timer;
	struct timer_list	ack_timer;
	struct sk_buff_head	tx_queue;
	struct sk_buff_head	srej_queue;
	struct sk_buff_head	busy_queue;
	struct work_struct	busy_work;
	struct srej_list	srej_l;
	struct l2cap_conn	*conn;
	struct sock		*next_c;
	struct sock		*prev_c;
};

#define L2CAP_CONF_REQ_SENT       0x01
#define L2CAP_CONF_INPUT_DONE     0x02
#define L2CAP_CONF_OUTPUT_DONE    0x04
#define L2CAP_CONF_MTU_DONE       0x08
#define L2CAP_CONF_MODE_DONE      0x10
#define L2CAP_CONF_CONNECT_PEND   0x20
#define L2CAP_CONF_NO_FCS_RECV    0x40
#define L2CAP_CONF_STATE2_DEVICE  0x80

#define L2CAP_CONF_MAX_CONF_REQ 2
#define L2CAP_CONF_MAX_CONF_RSP 2

#define L2CAP_CONN_SAR_SDU         0x0001
#define L2CAP_CONN_SREJ_SENT       0x0002
#define L2CAP_CONN_WAIT_F          0x0004
#define L2CAP_CONN_SREJ_ACT        0x0008
#define L2CAP_CONN_SEND_PBIT       0x0010
#define L2CAP_CONN_REMOTE_BUSY     0x0020
#define L2CAP_CONN_LOCAL_BUSY      0x0040
#define L2CAP_CONN_REJ_ACT         0x0080
#define L2CAP_CONN_SEND_FBIT       0x0100
#define L2CAP_CONN_RNR_SENT        0x0200
#define L2CAP_CONN_SAR_RETRY       0x0400

#define __mod_retrans_timer() mod_timer(&l2cap_pi(sk)->retrans_timer, \
		jiffies +  msecs_to_jiffies(L2CAP_DEFAULT_RETRANS_TO));
#define __mod_monitor_timer() mod_timer(&l2cap_pi(sk)->monitor_timer, \
		jiffies + msecs_to_jiffies(L2CAP_DEFAULT_MONITOR_TO));
#define __mod_ack_timer() mod_timer(&l2cap_pi(sk)->ack_timer, \
		jiffies + msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));

static inline int l2cap_tx_window_full(struct sock *sk)
{
	struct l2cap_pinfo *pi = l2cap_pi(sk);
	int sub;

	sub = (pi->next_tx_seq - pi->expected_ack_seq) % 64;

	if (sub < 0)
		sub += 64;

	return (sub == pi->remote_tx_win);
}

#define __get_txseq(ctrl) ((ctrl) & L2CAP_CTRL_TXSEQ) >> 1
#define __get_reqseq(ctrl) ((ctrl) & L2CAP_CTRL_REQSEQ) >> 8
#define __is_iframe(ctrl) !((ctrl) & L2CAP_CTRL_FRAME_TYPE)
#define __is_sframe(ctrl) (ctrl) & L2CAP_CTRL_FRAME_TYPE
#define __is_sar_start(ctrl) ((ctrl) & L2CAP_CTRL_SAR) == L2CAP_SDU_START

void l2cap_load(void);

#endif /* __L2CAP_H */
Commit	Line	Data
1da177e4 LT	1	/*
	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
	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
	18	OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	19
	20	ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
	21	COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
	22	SOFTWARE IS DISCLAIMED.
	23	*/
	24
	25	#ifndef __L2CAP_H
	26	#define __L2CAP_H
	27
	28	/* L2CAP defaults */
47ec1dcd	29	#define L2CAP_DEFAULT_MTU 672
f2fcfcd6	30	#define L2CAP_DEFAULT_MIN_MTU 48
47ec1dcd	31	#define L2CAP_DEFAULT_FLUSH_TO 0xffff
1c2acffb	32	#define L2CAP_DEFAULT_TX_WINDOW 63
e90bac06 GP	33	#define L2CAP_DEFAULT_MAX_TX 3
	34	#define L2CAP_DEFAULT_RETRANS_TO 1000 /* 1 second */
	35	#define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */
c74e560c	36	#define L2CAP_DEFAULT_MAX_PDU_SIZE 672
c1b4f43b	37	#define L2CAP_DEFAULT_ACK_TO 200
1890d36b	38	#define L2CAP_LOCAL_BUSY_TRIES 12
1da177e4	39
4e8402a3 MH	40	#define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */
4e8402a3 MH	41	#define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */
1da177e4 LT	42
	43	/* L2CAP socket address */
	44	struct sockaddr_l2 {
	45	sa_family_t l2_family;
8e036fc3	46	__le16 l2_psm;
1da177e4	47	bdaddr_t l2_bdaddr;
f29972de	48	__le16 l2_cid;
1da177e4 LT	49	};
	50
	51	/* L2CAP socket options */
	52	#define L2CAP_OPTIONS 0x01
	53	struct l2cap_options {
	54	__u16 omtu;
	55	__u16 imtu;
	56	__u16 flush_to;
	57	__u8 mode;
fcc203c3	58	__u8 fcs;
68d7f0ce	59	__u8 max_tx;
14b5aa71	60	__u16 txwin_size;
1da177e4 LT	61	};
	62
	63	#define L2CAP_CONNINFO 0x02
	64	struct l2cap_conninfo {
	65	__u16 hci_handle;
	66	__u8 dev_class[3];
	67	};
	68
	69	#define L2CAP_LM 0x03
	70	#define L2CAP_LM_MASTER 0x0001
	71	#define L2CAP_LM_AUTH 0x0002
	72	#define L2CAP_LM_ENCRYPT 0x0004
	73	#define L2CAP_LM_TRUSTED 0x0008
	74	#define L2CAP_LM_RELIABLE 0x0010
	75	#define L2CAP_LM_SECURE 0x0020
	76
	77	/* L2CAP command codes */
47ec1dcd MH	78	#define L2CAP_COMMAND_REJ 0x01
	79	#define L2CAP_CONN_REQ 0x02
	80	#define L2CAP_CONN_RSP 0x03
	81	#define L2CAP_CONF_REQ 0x04
	82	#define L2CAP_CONF_RSP 0x05
	83	#define L2CAP_DISCONN_REQ 0x06
	84	#define L2CAP_DISCONN_RSP 0x07
	85	#define L2CAP_ECHO_REQ 0x08
	86	#define L2CAP_ECHO_RSP 0x09
	87	#define L2CAP_INFO_REQ 0x0a
	88	#define L2CAP_INFO_RSP 0x0b
	89
	90	/* L2CAP feature mask */
	91	#define L2CAP_FEAT_FLOWCTL 0x00000001
	92	#define L2CAP_FEAT_RETRANS 0x00000002
	93	#define L2CAP_FEAT_ERTM 0x00000008
	94	#define L2CAP_FEAT_STREAMING 0x00000010
	95	#define L2CAP_FEAT_FCS 0x00000020
	96	#define L2CAP_FEAT_FIXED_CHAN 0x00000080
	97
	98	/* L2CAP checksum option */
	99	#define L2CAP_FCS_NONE 0x00
	100	#define L2CAP_FCS_CRC16 0x01
1da177e4	101
1c2acffb GP	102	/* L2CAP Control Field bit masks */
	103	#define L2CAP_CTRL_SAR 0xC000
	104	#define L2CAP_CTRL_REQSEQ 0x3F00
	105	#define L2CAP_CTRL_TXSEQ 0x007E
	106	#define L2CAP_CTRL_RETRANS 0x0080
	107	#define L2CAP_CTRL_FINAL 0x0080
	108	#define L2CAP_CTRL_POLL 0x0010
	109	#define L2CAP_CTRL_SUPERVISE 0x000C
	110	#define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
	111
	112	#define L2CAP_CTRL_TXSEQ_SHIFT 1
	113	#define L2CAP_CTRL_REQSEQ_SHIFT 8
8f17154f	114	#define L2CAP_CTRL_SAR_SHIFT 14
1c2acffb GP	115
	116	/* L2CAP Supervisory Function */
	117	#define L2CAP_SUPER_RCV_READY 0x0000
	118	#define L2CAP_SUPER_REJECT 0x0004
	119	#define L2CAP_SUPER_RCV_NOT_READY 0x0008
	120	#define L2CAP_SUPER_SELECT_REJECT 0x000C
	121
	122	/* L2CAP Segmentation and Reassembly */
	123	#define L2CAP_SDU_UNSEGMENTED 0x0000
	124	#define L2CAP_SDU_START 0x4000
	125	#define L2CAP_SDU_END 0x8000
	126	#define L2CAP_SDU_CONTINUE 0xC000
	127
1da177e4 LT	128	/* L2CAP structures */
1da177e4 LT	129	struct l2cap_hdr {
8e036fc3 AV	130	__le16 len;
8e036fc3 AV	131	__le16 cid;
1da177e4 LT	132	} __attribute__ ((packed));
	133	#define L2CAP_HDR_SIZE 4
	134
	135	struct l2cap_cmd_hdr {
	136	__u8 code;
	137	__u8 ident;
8e036fc3	138	__le16 len;
1da177e4 LT	139	} __attribute__ ((packed));
	140	#define L2CAP_CMD_HDR_SIZE 4
	141
	142	struct l2cap_cmd_rej {
8e036fc3	143	__le16 reason;
1da177e4 LT	144	} __attribute__ ((packed));
	145
	146	struct l2cap_conn_req {
8e036fc3 AV	147	__le16 psm;
8e036fc3 AV	148	__le16 scid;
1da177e4 LT	149	} __attribute__ ((packed));
	150
	151	struct l2cap_conn_rsp {
8e036fc3 AV	152	__le16 dcid;
	153	__le16 scid;
	154	__le16 result;
	155	__le16 status;
1da177e4 LT	156	} __attribute__ ((packed));
1da177e4 LT	157
8db4dc46 GP	158	/* channel indentifier */
	159	#define L2CAP_CID_SIGNALING 0x0001
	160	#define L2CAP_CID_CONN_LESS 0x0002
	161	#define L2CAP_CID_DYN_START 0x0040
	162	#define L2CAP_CID_DYN_END 0xffff
	163
1da177e4	164	/* connect result */
47ec1dcd MH	165	#define L2CAP_CR_SUCCESS 0x0000
	166	#define L2CAP_CR_PEND 0x0001
	167	#define L2CAP_CR_BAD_PSM 0x0002
	168	#define L2CAP_CR_SEC_BLOCK 0x0003
	169	#define L2CAP_CR_NO_MEM 0x0004
1da177e4 LT	170
1da177e4 LT	171	/* connect status */
47ec1dcd MH	172	#define L2CAP_CS_NO_INFO 0x0000
	173	#define L2CAP_CS_AUTHEN_PEND 0x0001
	174	#define L2CAP_CS_AUTHOR_PEND 0x0002
1da177e4 LT	175
1da177e4 LT	176	struct l2cap_conf_req {
8e036fc3 AV	177	__le16 dcid;
8e036fc3 AV	178	__le16 flags;
1da177e4 LT	179	__u8 data[0];
	180	} __attribute__ ((packed));
	181
	182	struct l2cap_conf_rsp {
8e036fc3 AV	183	__le16 scid;
	184	__le16 flags;
	185	__le16 result;
1da177e4 LT	186	__u8 data[0];
	187	} __attribute__ ((packed));
	188
5dee9e7c MH	189	#define L2CAP_CONF_SUCCESS 0x0000
	190	#define L2CAP_CONF_UNACCEPT 0x0001
	191	#define L2CAP_CONF_REJECT 0x0002
	192	#define L2CAP_CONF_UNKNOWN 0x0003
1da177e4 LT	193
	194	struct l2cap_conf_opt {
	195	__u8 type;
	196	__u8 len;
	197	__u8 val[0];
	198	} __attribute__ ((packed));
	199	#define L2CAP_CONF_OPT_SIZE 2
	200
589d2746	201	#define L2CAP_CONF_HINT 0x80
47ec1dcd	202	#define L2CAP_CONF_MASK 0x7f
589d2746	203
1da177e4 LT	204	#define L2CAP_CONF_MTU 0x01
	205	#define L2CAP_CONF_FLUSH_TO 0x02
	206	#define L2CAP_CONF_QOS 0x03
	207	#define L2CAP_CONF_RFC 0x04
47ec1dcd	208	#define L2CAP_CONF_FCS 0x05
1da177e4 LT	209
	210	#define L2CAP_CONF_MAX_SIZE 22
	211
6464f35f MH	212	struct l2cap_conf_rfc {
	213	__u8 mode;
	214	__u8 txwin_size;
	215	__u8 max_transmit;
	216	__le16 retrans_timeout;
	217	__le16 monitor_timeout;
	218	__le16 max_pdu_size;
	219	} __attribute__ ((packed));
	220
	221	#define L2CAP_MODE_BASIC 0x00
	222	#define L2CAP_MODE_RETRANS 0x01
	223	#define L2CAP_MODE_FLOWCTL 0x02
47ec1dcd	224	#define L2CAP_MODE_ERTM 0x03
c6b03cf9	225	#define L2CAP_MODE_STREAMING 0x04
6464f35f	226
1da177e4	227	struct l2cap_disconn_req {
8e036fc3 AV	228	__le16 dcid;
8e036fc3 AV	229	__le16 scid;
1da177e4 LT	230	} __attribute__ ((packed));
	231
	232	struct l2cap_disconn_rsp {
8e036fc3 AV	233	__le16 dcid;
8e036fc3 AV	234	__le16 scid;
1da177e4 LT	235	} __attribute__ ((packed));
	236
	237	struct l2cap_info_req {
8e036fc3	238	__le16 type;
1da177e4 LT	239	} __attribute__ ((packed));
	240
	241	struct l2cap_info_rsp {
8e036fc3 AV	242	__le16 type;
8e036fc3 AV	243	__le16 result;
1da177e4 LT	244	__u8 data[0];
	245	} __attribute__ ((packed));
	246
	247	/* info type */
	248	#define L2CAP_IT_CL_MTU 0x0001
	249	#define L2CAP_IT_FEAT_MASK 0x0002
e1027a7c	250	#define L2CAP_IT_FIXED_CHAN 0x0003
1da177e4 LT	251
	252	/* info result */
	253	#define L2CAP_IR_SUCCESS 0x0000
	254	#define L2CAP_IR_NOTSUPP 0x0001
	255
	256	/* ----- L2CAP connections ----- */
	257	struct l2cap_chan_list {
	258	struct sock *head;
	259	rwlock_t lock;
	260	long num;
	261	};
	262
	263	struct l2cap_conn {
	264	struct hci_conn *hcon;
	265
	266	bdaddr_t *dst;
	267	bdaddr_t *src;
	268
	269	unsigned int mtu;
	270
4e8402a3 MH	271	__u32 feat_mask;
	272
	273	__u8 info_state;
	274	__u8 info_ident;
	275
	276	struct timer_list info_timer;
	277
1da177e4 LT	278	spinlock_t lock;
	279
	280	struct sk_buff *rx_skb;
	281	__u32 rx_len;
	282	__u8 rx_ident;
	283	__u8 tx_ident;
	284
2950f21a MH	285	__u8 disc_reason;
2950f21a MH	286
1da177e4 LT	287	struct l2cap_chan_list chan_list;
	288	};
	289
4e8402a3	290	#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
984947dc MH	291	#define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
984947dc MH	292	#define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
4e8402a3	293
1da177e4 LT	294	/* ----- L2CAP channel and socket info ----- */
1da177e4 LT	295	#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
1c2acffb	296	#define TX_QUEUE(sk) (&l2cap_pi(sk)->tx_queue)
8f17154f	297	#define SREJ_QUEUE(sk) (&l2cap_pi(sk)->srej_queue)
1890d36b	298	#define BUSY_QUEUE(sk) (&l2cap_pi(sk)->busy_queue)
8f17154f GP	299	#define SREJ_LIST(sk) (&l2cap_pi(sk)->srej_l.list)
	300
	301	struct srej_list {
	302	__u8 tx_seq;
	303	struct list_head list;
	304	};
1da177e4 LT	305
	306	struct l2cap_pinfo {
	307	struct bt_sock bt;
8e036fc3	308	__le16 psm;
1da177e4 LT	309	__u16 dcid;
	310	__u16 scid;
	311
	312	__u16 imtu;
	313	__u16 omtu;
	314	__u16 flush_to;
c6b03cf9	315	__u8 mode;
f2fcfcd6 GP	316	__u8 num_conf_req;
	317	__u8 num_conf_rsp;
	318
c6b03cf9 MH	319	__u8 fcs;
c6b03cf9 MH	320	__u8 sec_level;
2af6b9d5	321	__u8 role_switch;
c6b03cf9	322	__u8 force_reliable;
1da177e4	323
5dee9e7c MH	324	__u8 conf_req[64];
5dee9e7c MH	325	__u8 conf_len;
1da177e4	326	__u8 conf_state;
d5392c8f	327	__u16 conn_state;
1da177e4	328
1c2acffb GP	329	__u8 next_tx_seq;
1c2acffb GP	330	__u8 expected_ack_seq;
1c2acffb	331	__u8 expected_tx_seq;
8f17154f GP	332	__u8 buffer_seq;
8f17154f GP	333	__u8 buffer_seq_srej;
ef54fd93	334	__u8 srej_save_reqseq;
d5392c8f	335	__u8 frames_sent;
1c2acffb	336	__u8 unacked_frames;
e90bac06	337	__u8 retry_count;
803020c6	338	__u8 num_acked;
c74e560c GP	339	__u16 sdu_len;
	340	__u16 partial_sdu_len;
	341	struct sk_buff *sdu;
1c2acffb	342
1da177e4 LT	343	__u8 ident;
1da177e4 LT	344
14b5aa71	345	__u8 tx_win;
68d7f0ce	346	__u8 max_tx;
f2fcfcd6 GP	347	__u8 remote_tx_win;
	348	__u8 remote_max_tx;
	349	__u16 retrans_timeout;
	350	__u16 monitor_timeout;
1c762159 GP	351	__u16 remote_mps;
1c762159 GP	352	__u16 mps;
f2fcfcd6	353
8e036fc3	354	__le16 sport;
1da177e4	355
e90bac06 GP	356	struct timer_list retrans_timer;
e90bac06 GP	357	struct timer_list monitor_timer;
c1b4f43b	358	struct timer_list ack_timer;
1c2acffb	359	struct sk_buff_head tx_queue;
8f17154f	360	struct sk_buff_head srej_queue;
1890d36b GP	361	struct sk_buff_head busy_queue;
1890d36b GP	362	struct work_struct busy_work;
8f17154f	363	struct srej_list srej_l;
1da177e4 LT	364	struct l2cap_conn *conn;
	365	struct sock *next_c;
	366	struct sock *prev_c;
	367	};
	368
f2fcfcd6 GP	369	#define L2CAP_CONF_REQ_SENT 0x01
	370	#define L2CAP_CONF_INPUT_DONE 0x02
	371	#define L2CAP_CONF_OUTPUT_DONE 0x04
	372	#define L2CAP_CONF_MTU_DONE 0x08
	373	#define L2CAP_CONF_MODE_DONE 0x10
	374	#define L2CAP_CONF_CONNECT_PEND 0x20
fcc203c3	375	#define L2CAP_CONF_NO_FCS_RECV 0x40
f2fcfcd6 GP	376	#define L2CAP_CONF_STATE2_DEVICE 0x80
	377
	378	#define L2CAP_CONF_MAX_CONF_REQ 2
	379	#define L2CAP_CONF_MAX_CONF_RSP 2
861d6882	380
d5392c8f GP	381	#define L2CAP_CONN_SAR_SDU 0x0001
	382	#define L2CAP_CONN_SREJ_SENT 0x0002
	383	#define L2CAP_CONN_WAIT_F 0x0004
	384	#define L2CAP_CONN_SREJ_ACT 0x0008
	385	#define L2CAP_CONN_SEND_PBIT 0x0010
	386	#define L2CAP_CONN_REMOTE_BUSY 0x0020
	387	#define L2CAP_CONN_LOCAL_BUSY 0x0040
	388	#define L2CAP_CONN_REJ_ACT 0x0080
	389	#define L2CAP_CONN_SEND_FBIT 0x0100
1890d36b GP	390	#define L2CAP_CONN_RNR_SENT 0x0200
1890d36b GP	391	#define L2CAP_CONN_SAR_RETRY 0x0400
e90bac06 GP	392
	393	#define __mod_retrans_timer() mod_timer(&l2cap_pi(sk)->retrans_timer, \
	394	jiffies + msecs_to_jiffies(L2CAP_DEFAULT_RETRANS_TO));
	395	#define __mod_monitor_timer() mod_timer(&l2cap_pi(sk)->monitor_timer, \
	396	jiffies + msecs_to_jiffies(L2CAP_DEFAULT_MONITOR_TO));
c1b4f43b GP	397	#define __mod_ack_timer() mod_timer(&l2cap_pi(sk)->ack_timer, \
c1b4f43b GP	398	jiffies + msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
c74e560c	399
1c2acffb GP	400	static inline int l2cap_tx_window_full(struct sock *sk)
	401	{
	402	struct l2cap_pinfo *pi = l2cap_pi(sk);
	403	int sub;
	404
	405	sub = (pi->next_tx_seq - pi->expected_ack_seq) % 64;
	406
	407	if (sub < 0)
	408	sub += 64;
	409
	410	return (sub == pi->remote_tx_win);
	411	}
	412
	413	#define __get_txseq(ctrl) ((ctrl) & L2CAP_CTRL_TXSEQ) >> 1
	414	#define __get_reqseq(ctrl) ((ctrl) & L2CAP_CTRL_REQSEQ) >> 8
	415	#define __is_iframe(ctrl) !((ctrl) & L2CAP_CTRL_FRAME_TYPE)
	416	#define __is_sframe(ctrl) (ctrl) & L2CAP_CTRL_FRAME_TYPE
c74e560c	417	#define __is_sar_start(ctrl) ((ctrl) & L2CAP_CTRL_SAR) == L2CAP_SDU_START
1da177e4 LT	418
	419	void l2cap_load(void);
	420
	421	#endif /* __L2CAP_H */