[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_NUM_TO_ACK        (L2CAP_DEFAULT_TX_WINDOW/5)
#define L2CAP_DEFAULT_MAX_RECEIVE	1
#define L2CAP_DEFAULT_RETRANS_TO	300    /* 300 milliseconds */
#define L2CAP_DEFAULT_MONITOR_TO	1000   /* 1 second */
#define L2CAP_DEFAULT_MAX_RX_APDU	0xfff7

#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;
};

#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

/* 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)

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;

	__u8		next_tx_seq;
	__u8		expected_ack_seq;
	__u8		req_seq;
	__u8		expected_tx_seq;
	__u8		unacked_frames;
	__u8		num_to_ack;

	__u8		ident;

	__u8		remote_tx_win;
	__u8		remote_max_tx;
	__u16		retrans_timeout;
	__u16		monitor_timeout;
	__u16		max_pdu_size;

	__le16		sport;

	struct sk_buff_head	tx_queue;
	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_STATE2_DEVICE  0x80

#define L2CAP_CONF_MAX_CONF_REQ 2
#define L2CAP_CONF_MAX_CONF_RSP 2

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

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 GP	32	#define L2CAP_DEFAULT_TX_WINDOW 63
1c2acffb GP	33	#define L2CAP_DEFAULT_NUM_TO_ACK (L2CAP_DEFAULT_TX_WINDOW/5)
47ec1dcd MH	34	#define L2CAP_DEFAULT_MAX_RECEIVE 1
	35	#define L2CAP_DEFAULT_RETRANS_TO 300 /* 300 milliseconds */
	36	#define L2CAP_DEFAULT_MONITOR_TO 1000 /* 1 second */
	37	#define L2CAP_DEFAULT_MAX_RX_APDU 0xfff7
1da177e4	38
4e8402a3 MH	39	#define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */
4e8402a3 MH	40	#define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */
1da177e4 LT	41
	42	/* L2CAP socket address */
	43	struct sockaddr_l2 {
	44	sa_family_t l2_family;
8e036fc3	45	__le16 l2_psm;
1da177e4	46	bdaddr_t l2_bdaddr;
f29972de	47	__le16 l2_cid;
1da177e4 LT	48	};
	49
	50	/* L2CAP socket options */
	51	#define L2CAP_OPTIONS 0x01
	52	struct l2cap_options {
	53	__u16 omtu;
	54	__u16 imtu;
	55	__u16 flush_to;
	56	__u8 mode;
	57	};
	58
	59	#define L2CAP_CONNINFO 0x02
	60	struct l2cap_conninfo {
	61	__u16 hci_handle;
	62	__u8 dev_class[3];
	63	};
	64
	65	#define L2CAP_LM 0x03
	66	#define L2CAP_LM_MASTER 0x0001
	67	#define L2CAP_LM_AUTH 0x0002
	68	#define L2CAP_LM_ENCRYPT 0x0004
	69	#define L2CAP_LM_TRUSTED 0x0008
	70	#define L2CAP_LM_RELIABLE 0x0010
	71	#define L2CAP_LM_SECURE 0x0020
	72
	73	/* L2CAP command codes */
47ec1dcd MH	74	#define L2CAP_COMMAND_REJ 0x01
	75	#define L2CAP_CONN_REQ 0x02
	76	#define L2CAP_CONN_RSP 0x03
	77	#define L2CAP_CONF_REQ 0x04
	78	#define L2CAP_CONF_RSP 0x05
	79	#define L2CAP_DISCONN_REQ 0x06
	80	#define L2CAP_DISCONN_RSP 0x07
	81	#define L2CAP_ECHO_REQ 0x08
	82	#define L2CAP_ECHO_RSP 0x09
	83	#define L2CAP_INFO_REQ 0x0a
	84	#define L2CAP_INFO_RSP 0x0b
	85
	86	/* L2CAP feature mask */
	87	#define L2CAP_FEAT_FLOWCTL 0x00000001
	88	#define L2CAP_FEAT_RETRANS 0x00000002
	89	#define L2CAP_FEAT_ERTM 0x00000008
	90	#define L2CAP_FEAT_STREAMING 0x00000010
	91	#define L2CAP_FEAT_FCS 0x00000020
	92	#define L2CAP_FEAT_FIXED_CHAN 0x00000080
	93
	94	/* L2CAP checksum option */
	95	#define L2CAP_FCS_NONE 0x00
	96	#define L2CAP_FCS_CRC16 0x01
1da177e4	97
1c2acffb GP	98	/* L2CAP Control Field bit masks */
	99	#define L2CAP_CTRL_SAR 0xC000
	100	#define L2CAP_CTRL_REQSEQ 0x3F00
	101	#define L2CAP_CTRL_TXSEQ 0x007E
	102	#define L2CAP_CTRL_RETRANS 0x0080
	103	#define L2CAP_CTRL_FINAL 0x0080
	104	#define L2CAP_CTRL_POLL 0x0010
	105	#define L2CAP_CTRL_SUPERVISE 0x000C
	106	#define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
	107
	108	#define L2CAP_CTRL_TXSEQ_SHIFT 1
	109	#define L2CAP_CTRL_REQSEQ_SHIFT 8
	110
	111	/* L2CAP Supervisory Function */
	112	#define L2CAP_SUPER_RCV_READY 0x0000
	113	#define L2CAP_SUPER_REJECT 0x0004
	114	#define L2CAP_SUPER_RCV_NOT_READY 0x0008
	115	#define L2CAP_SUPER_SELECT_REJECT 0x000C
	116
	117	/* L2CAP Segmentation and Reassembly */
	118	#define L2CAP_SDU_UNSEGMENTED 0x0000
	119	#define L2CAP_SDU_START 0x4000
	120	#define L2CAP_SDU_END 0x8000
	121	#define L2CAP_SDU_CONTINUE 0xC000
	122
1da177e4 LT	123	/* L2CAP structures */
1da177e4 LT	124	struct l2cap_hdr {
8e036fc3 AV	125	__le16 len;
8e036fc3 AV	126	__le16 cid;
1da177e4 LT	127	} __attribute__ ((packed));
	128	#define L2CAP_HDR_SIZE 4
	129
	130	struct l2cap_cmd_hdr {
	131	__u8 code;
	132	__u8 ident;
8e036fc3	133	__le16 len;
1da177e4 LT	134	} __attribute__ ((packed));
	135	#define L2CAP_CMD_HDR_SIZE 4
	136
	137	struct l2cap_cmd_rej {
8e036fc3	138	__le16 reason;
1da177e4 LT	139	} __attribute__ ((packed));
	140
	141	struct l2cap_conn_req {
8e036fc3 AV	142	__le16 psm;
8e036fc3 AV	143	__le16 scid;
1da177e4 LT	144	} __attribute__ ((packed));
	145
	146	struct l2cap_conn_rsp {
8e036fc3 AV	147	__le16 dcid;
	148	__le16 scid;
	149	__le16 result;
	150	__le16 status;
1da177e4 LT	151	} __attribute__ ((packed));
1da177e4 LT	152
8db4dc46 GP	153	/* channel indentifier */
	154	#define L2CAP_CID_SIGNALING 0x0001
	155	#define L2CAP_CID_CONN_LESS 0x0002
	156	#define L2CAP_CID_DYN_START 0x0040
	157	#define L2CAP_CID_DYN_END 0xffff
	158
1da177e4	159	/* connect result */
47ec1dcd MH	160	#define L2CAP_CR_SUCCESS 0x0000
	161	#define L2CAP_CR_PEND 0x0001
	162	#define L2CAP_CR_BAD_PSM 0x0002
	163	#define L2CAP_CR_SEC_BLOCK 0x0003
	164	#define L2CAP_CR_NO_MEM 0x0004
1da177e4 LT	165
1da177e4 LT	166	/* connect status */
47ec1dcd MH	167	#define L2CAP_CS_NO_INFO 0x0000
	168	#define L2CAP_CS_AUTHEN_PEND 0x0001
	169	#define L2CAP_CS_AUTHOR_PEND 0x0002
1da177e4 LT	170
1da177e4 LT	171	struct l2cap_conf_req {
8e036fc3 AV	172	__le16 dcid;
8e036fc3 AV	173	__le16 flags;
1da177e4 LT	174	__u8 data[0];
	175	} __attribute__ ((packed));
	176
	177	struct l2cap_conf_rsp {
8e036fc3 AV	178	__le16 scid;
	179	__le16 flags;
	180	__le16 result;
1da177e4 LT	181	__u8 data[0];
	182	} __attribute__ ((packed));
	183
5dee9e7c MH	184	#define L2CAP_CONF_SUCCESS 0x0000
	185	#define L2CAP_CONF_UNACCEPT 0x0001
	186	#define L2CAP_CONF_REJECT 0x0002
	187	#define L2CAP_CONF_UNKNOWN 0x0003
1da177e4 LT	188
	189	struct l2cap_conf_opt {
	190	__u8 type;
	191	__u8 len;
	192	__u8 val[0];
	193	} __attribute__ ((packed));
	194	#define L2CAP_CONF_OPT_SIZE 2
	195
589d2746	196	#define L2CAP_CONF_HINT 0x80
47ec1dcd	197	#define L2CAP_CONF_MASK 0x7f
589d2746	198
1da177e4 LT	199	#define L2CAP_CONF_MTU 0x01
	200	#define L2CAP_CONF_FLUSH_TO 0x02
	201	#define L2CAP_CONF_QOS 0x03
	202	#define L2CAP_CONF_RFC 0x04
47ec1dcd	203	#define L2CAP_CONF_FCS 0x05
1da177e4 LT	204
	205	#define L2CAP_CONF_MAX_SIZE 22
	206
6464f35f MH	207	struct l2cap_conf_rfc {
	208	__u8 mode;
	209	__u8 txwin_size;
	210	__u8 max_transmit;
	211	__le16 retrans_timeout;
	212	__le16 monitor_timeout;
	213	__le16 max_pdu_size;
	214	} __attribute__ ((packed));
	215
	216	#define L2CAP_MODE_BASIC 0x00
	217	#define L2CAP_MODE_RETRANS 0x01
	218	#define L2CAP_MODE_FLOWCTL 0x02
47ec1dcd	219	#define L2CAP_MODE_ERTM 0x03
c6b03cf9	220	#define L2CAP_MODE_STREAMING 0x04
6464f35f	221
1da177e4	222	struct l2cap_disconn_req {
8e036fc3 AV	223	__le16 dcid;
8e036fc3 AV	224	__le16 scid;
1da177e4 LT	225	} __attribute__ ((packed));
	226
	227	struct l2cap_disconn_rsp {
8e036fc3 AV	228	__le16 dcid;
8e036fc3 AV	229	__le16 scid;
1da177e4 LT	230	} __attribute__ ((packed));
	231
	232	struct l2cap_info_req {
8e036fc3	233	__le16 type;
1da177e4 LT	234	} __attribute__ ((packed));
	235
	236	struct l2cap_info_rsp {
8e036fc3 AV	237	__le16 type;
8e036fc3 AV	238	__le16 result;
1da177e4 LT	239	__u8 data[0];
	240	} __attribute__ ((packed));
	241
	242	/* info type */
	243	#define L2CAP_IT_CL_MTU 0x0001
	244	#define L2CAP_IT_FEAT_MASK 0x0002
e1027a7c	245	#define L2CAP_IT_FIXED_CHAN 0x0003
1da177e4 LT	246
	247	/* info result */
	248	#define L2CAP_IR_SUCCESS 0x0000
	249	#define L2CAP_IR_NOTSUPP 0x0001
	250
	251	/* ----- L2CAP connections ----- */
	252	struct l2cap_chan_list {
	253	struct sock *head;
	254	rwlock_t lock;
	255	long num;
	256	};
	257
	258	struct l2cap_conn {
	259	struct hci_conn *hcon;
	260
	261	bdaddr_t *dst;
	262	bdaddr_t *src;
	263
	264	unsigned int mtu;
	265
4e8402a3 MH	266	__u32 feat_mask;
	267
	268	__u8 info_state;
	269	__u8 info_ident;
	270
	271	struct timer_list info_timer;
	272
1da177e4 LT	273	spinlock_t lock;
	274
	275	struct sk_buff *rx_skb;
	276	__u32 rx_len;
	277	__u8 rx_ident;
	278	__u8 tx_ident;
	279
2950f21a MH	280	__u8 disc_reason;
2950f21a MH	281
1da177e4 LT	282	struct l2cap_chan_list chan_list;
	283	};
	284
4e8402a3	285	#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
984947dc MH	286	#define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
984947dc MH	287	#define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
4e8402a3	288
1da177e4 LT	289	/* ----- L2CAP channel and socket info ----- */
1da177e4 LT	290	#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
1c2acffb	291	#define TX_QUEUE(sk) (&l2cap_pi(sk)->tx_queue)
1da177e4 LT	292
	293	struct l2cap_pinfo {
	294	struct bt_sock bt;
8e036fc3	295	__le16 psm;
1da177e4 LT	296	__u16 dcid;
	297	__u16 scid;
	298
	299	__u16 imtu;
	300	__u16 omtu;
	301	__u16 flush_to;
c6b03cf9	302	__u8 mode;
f2fcfcd6 GP	303	__u8 num_conf_req;
	304	__u8 num_conf_rsp;
	305
c6b03cf9 MH	306	__u8 fcs;
c6b03cf9 MH	307	__u8 sec_level;
2af6b9d5	308	__u8 role_switch;
c6b03cf9	309	__u8 force_reliable;
1da177e4	310
5dee9e7c MH	311	__u8 conf_req[64];
5dee9e7c MH	312	__u8 conf_len;
1da177e4	313	__u8 conf_state;
1da177e4	314
1c2acffb GP	315	__u8 next_tx_seq;
	316	__u8 expected_ack_seq;
	317	__u8 req_seq;
	318	__u8 expected_tx_seq;
	319	__u8 unacked_frames;
	320	__u8 num_to_ack;
	321
1da177e4 LT	322	__u8 ident;
1da177e4 LT	323
f2fcfcd6 GP	324	__u8 remote_tx_win;
	325	__u8 remote_max_tx;
	326	__u16 retrans_timeout;
	327	__u16 monitor_timeout;
	328	__u16 max_pdu_size;
	329
8e036fc3	330	__le16 sport;
1da177e4	331
1c2acffb	332	struct sk_buff_head tx_queue;
1da177e4 LT	333	struct l2cap_conn *conn;
	334	struct sock *next_c;
	335	struct sock *prev_c;
	336	};
	337
f2fcfcd6 GP	338	#define L2CAP_CONF_REQ_SENT 0x01
	339	#define L2CAP_CONF_INPUT_DONE 0x02
	340	#define L2CAP_CONF_OUTPUT_DONE 0x04
	341	#define L2CAP_CONF_MTU_DONE 0x08
	342	#define L2CAP_CONF_MODE_DONE 0x10
	343	#define L2CAP_CONF_CONNECT_PEND 0x20
	344	#define L2CAP_CONF_STATE2_DEVICE 0x80
	345
	346	#define L2CAP_CONF_MAX_CONF_REQ 2
	347	#define L2CAP_CONF_MAX_CONF_RSP 2
861d6882	348
1c2acffb GP	349	static inline int l2cap_tx_window_full(struct sock *sk)
	350	{
	351	struct l2cap_pinfo *pi = l2cap_pi(sk);
	352	int sub;
	353
	354	sub = (pi->next_tx_seq - pi->expected_ack_seq) % 64;
	355
	356	if (sub < 0)
	357	sub += 64;
	358
	359	return (sub == pi->remote_tx_win);
	360	}
	361
	362	#define __get_txseq(ctrl) ((ctrl) & L2CAP_CTRL_TXSEQ) >> 1
	363	#define __get_reqseq(ctrl) ((ctrl) & L2CAP_CTRL_REQSEQ) >> 8
	364	#define __is_iframe(ctrl) !((ctrl) & L2CAP_CTRL_FRAME_TYPE)
	365	#define __is_sframe(ctrl) (ctrl) & L2CAP_CTRL_FRAME_TYPE
1da177e4 LT	366
	367	void l2cap_load(void);
	368
	369	#endif /* __L2CAP_H */