/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2000-2002 Maxim Krasnyansky <maxk@qualcomm.com>
* Copyright (C) 2003-2011 Marcel Holtmann <marcel@holtmann.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef __L2CAP_H
#define __L2CAP_H
/* 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
#define L2CAP_CREATE_REQ 0x0c
#define L2CAP_CREATE_RSP 0x0d
#define L2CAP_MOVE_REQ 0x0e
#define L2CAP_MOVE_RSP 0x0f
#define L2CAP_MOVE_CFM 0x10
#define L2CAP_MOVE_CFM_RSP 0x11
/* L2CAP extended feature mask */
#define L2CAP_FEAT_FLOWCTL 0x00000001
#define L2CAP_FEAT_RETRANS 0x00000002
#define L2CAP_FEAT_BIDIR_QOS 0x00000004
#define L2CAP_FEAT_ERTM 0x00000008
#define L2CAP_FEAT_STREAMING 0x00000010
#define L2CAP_FEAT_FCS 0x00000020
#define L2CAP_FEAT_EXT_FLOW 0x00000040
#define L2CAP_FEAT_FIXED_CHAN 0x00000080
#define L2CAP_FEAT_EXT_WINDOW 0x00000100
#define L2CAP_FEAT_UCD 0x00000200
/* L2CAP Control Field bit masks */
#define L2CAP_CTRL_SAR_MASK 0xC000
#define L2CAP_CTRL_REQSEQ_MASK 0x3F00
#define L2CAP_CTRL_TXSEQ_MASK 0x007E
#define L2CAP_CTRL_SUPERVISE_MASK 0x000C
#define L2CAP_CTRL_RETRANS 0x0080
#define L2CAP_CTRL_FINAL 0x0080
#define L2CAP_CTRL_POLL 0x0010
#define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
#define L2CAP_CTRL_TXSEQ_SHIFT 1
#define L2CAP_CTRL_SUPER_SHIFT 2
#define L2CAP_CTRL_REQSEQ_SHIFT 8
#define L2CAP_CTRL_SAR_SHIFT 14
#define L2CAP_EXT_CTRL_TXSEQ_MASK 0xFFFC0000
#define L2CAP_EXT_CTRL_SAR_MASK 0x00030000
#define L2CAP_EXT_CTRL_SUPERVISE_MASK 0x00030000
#define L2CAP_EXT_CTRL_REQSEQ_MASK 0x0000FFFC
#define L2CAP_EXT_CTRL_POLL 0x00040000
#define L2CAP_EXT_CTRL_FINAL 0x00000002
#define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
#define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2
#define L2CAP_EXT_CTRL_SAR_SHIFT 16
#define L2CAP_EXT_CTRL_SUPER_SHIFT 16
#define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
/* L2CAP Supervisory Function */
#define L2CAP_SUPER_RR 0x00
#define L2CAP_SUPER_REJ 0x01
#define L2CAP_SUPER_RNR 0x02
#define L2CAP_SUPER_SREJ 0x03
/* L2CAP Segmentation and Reassembly */
#define L2CAP_SAR_UNSEGMENTED 0x00
#define L2CAP_SAR_START 0x01
#define L2CAP_SAR_END 0x02
#define L2CAP_SAR_CONTINUE 0x03
#define L2CAP_SDULEN_SIZE 2
/* L2CAP fixed channels */
#define L2CAP_FC_L2CAP 0x02
#define L2CAP_FC_CONNLESS 0x04
#define L2CAP_FC_A2MP 0x08
/* L2CAP structures */
typedef struct {
uint16_t len;
uint16_t cid;
} __attribute__ ((packed)) l2cap_hdr;
#define L2CAP_HDR_SIZE 4
typedef struct {
uint8_t code;
uint8_t ident;
uint16_t len;
} __attribute__ ((packed)) l2cap_cmd_hdr;
#define L2CAP_CMD_HDR_SIZE 4
typedef struct {
uint16_t reason;
} __attribute__ ((packed)) l2cap_cmd_rej;
#define L2CAP_CMD_REJ_SIZE 2
typedef struct {
uint16_t psm;
uint16_t scid;
} __attribute__ ((packed)) l2cap_conn_req;
#define L2CAP_CONN_REQ_SIZE 4
typedef struct {
uint16_t dcid;
uint16_t scid;
uint16_t result;
uint16_t status;
} __attribute__ ((packed)) l2cap_conn_rsp;
#define L2CAP_CONN_RSP_SIZE 8
/* 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
typedef struct {
uint16_t dcid;
uint16_t flags;
uint8_t data[0];
} __attribute__ ((packed)) l2cap_conf_req;
#define L2CAP_CONF_REQ_SIZE 4
typedef struct {
uint16_t scid;
uint16_t flags;
uint16_t result;
uint8_t data[0];
} __attribute__ ((packed)) l2cap_conf_rsp;
#define L2CAP_CONF_RSP_SIZE 6
#define L2CAP_CONF_SUCCESS 0x0000
#define L2CAP_CONF_UNACCEPT 0x0001
#define L2CAP_CONF_REJECT 0x0002
#define L2CAP_CONF_UNKNOWN 0x0003
#define L2CAP_CONF_PENDING 0x0004
#define L2CAP_CONF_EFS_REJECT 0x0005
typedef struct {
uint8_t type;
uint8_t len;
uint8_t val[0];
} __attribute__ ((packed)) l2cap_conf_opt;
#define L2CAP_CONF_OPT_SIZE 2
#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_EFS 0x06
#define L2CAP_CONF_EWS 0x07
#define L2CAP_CONF_MAX_SIZE 22
#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
#define L2CAP_SERVTYPE_NOTRAFFIC 0x00
#define L2CAP_SERVTYPE_BESTEFFORT 0x01
#define L2CAP_SERVTYPE_GUARANTEED 0x02
typedef struct {
uint16_t dcid;
uint16_t scid;
} __attribute__ ((packed)) l2cap_disconn_req;
#define L2CAP_DISCONN_REQ_SIZE 4
typedef struct {
uint16_t dcid;
uint16_t scid;
} __attribute__ ((packed)) l2cap_disconn_rsp;
#define L2CAP_DISCONN_RSP_SIZE 4
typedef struct {
uint16_t type;
} __attribute__ ((packed)) l2cap_info_req;
#define L2CAP_INFO_REQ_SIZE 2
typedef struct {
uint16_t type;
uint16_t result;
uint8_t data[0];
} __attribute__ ((packed)) l2cap_info_rsp;
#define L2CAP_INFO_RSP_SIZE 4
/* info type */
#define L2CAP_IT_CL_MTU 0x0001
#define L2CAP_IT_FEAT_MASK 0x0002
/* info result */
#define L2CAP_IR_SUCCESS 0x0000
#define L2CAP_IR_NOTSUPP 0x0001
typedef struct {
uint16_t psm;
uint16_t scid;
uint8_t id;
} __attribute__ ((packed)) l2cap_create_req;
#define L2CAP_CREATE_REQ_SIZE 5
typedef struct {
uint16_t dcid;
uint16_t scid;
uint16_t result;
uint16_t status;
} __attribute__ ((packed)) l2cap_create_rsp;
#define L2CAP_CREATE_RSP_SIZE 8
typedef struct {
uint16_t icid;
uint8_t id;
} __attribute__ ((packed)) l2cap_move_req;
#define L2CAP_MOVE_REQ_SIZE 3
typedef struct {
uint16_t icid;
uint16_t result;
} __attribute__ ((packed)) l2cap_move_rsp;
#define L2CAP_MOVE_RSP_SIZE 4
typedef struct {
uint16_t icid;
uint16_t result;
} __attribute__ ((packed)) l2cap_move_cfm;
#define L2CAP_MOVE_CFM_SIZE 4
typedef struct {
uint16_t icid;
} __attribute__ ((packed)) l2cap_move_cfm_rsp;
#define L2CAP_MOVE_CFM_RSP_SIZE 2
#endif /* __L2CAP_H */