157 lines
5.2 KiB
C
157 lines
5.2 KiB
C
/****************************************************************************
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* wireless/bluetooth/bt_l2cap.h
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*
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* Copyright (c) 2016, Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS
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* ; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __WIRELESS_BLUETOOTH_BT_L2CAP_H
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#define __WIRELESS_BLUETOOTH_BT_L2CAP_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define BT_L2CAP_CID_ATT 0x0004
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#define BT_L2CAP_CID_LE_SIG 0x0005
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#define BT_L2CAP_CID_SMP 0x0006
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#define BT_L2CAP_REJ_NOT_UNDERSTOOD 0x0000
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#define BT_L2CAP_REJ_MTU_EXCEEDED 0x0001
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#define BT_L2CAP_REJ_INVALID_CID 0x0002
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#define BT_L2CAP_CMD_REJECT 0x01
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#define BT_L2CAP_CONN_PARAM_REQ 0x12
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#define BT_L2CAP_CONN_PARAM_RSP 0x13
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/****************************************************************************
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* Public Types
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****************************************************************************/
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begin_packed_struct struct bt_l2cap_hdr_s
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{
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uint16_t len;
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uint16_t cid;
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} end_packed_struct;
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begin_packed_struct struct bt_l2cap_sig_hdr_s
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{
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uint8_t code;
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uint8_t ident;
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uint16_t len;
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} end_packed_struct;
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begin_packed_struct struct bt_l2cap_cmd_reject_s
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{
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uint16_t reason;
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uint8_t data[0];
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} end_packed_struct;
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begin_packed_struct struct bt_l2cap_conn_param_req_s
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{
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uint16_t min_interval;
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uint16_t max_interval;
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uint16_t latency;
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uint16_t timeout;
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} end_packed_struct;
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begin_packed_struct struct bt_l2cap_conn_param_rsp_s
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{
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uint16_t result;
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} end_packed_struct;
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struct bt_l2cap_chan_s
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{
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FAR struct bt_l2cap_chan_s *flink;
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FAR void *context;
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uint16_t cid;
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CODE void (*connected)(FAR struct bt_conn_s *conn,
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FAR void *context, uint16_t cid);
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CODE void (*disconnected)(FAR struct bt_conn_s *conn, FAR void *context,
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uint16_t cid);
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CODE void (*encrypt_change)(FAR struct bt_conn_s *conn,
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FAR void *context, uint16_t cid);
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CODE void (*receive)(FAR struct bt_conn_s *conn, FAR struct bt_buf_s *buf,
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FAR void *context, uint16_t cid);
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/* Register a fixed L2CAP channel handler for L2CAP */
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void bt_l2cap_chan_register(FAR struct bt_l2cap_chan_s *chan);
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/* Register a default L2CAP channel handle for L2CAP */
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void bt_l2cap_chan_default(FAR struct bt_l2cap_chan_s *chan);
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/* Notify L2CAP channels of a new connection */
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void bt_l2cap_connected(FAR struct bt_conn_s *conn);
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/* Notify L2CAP channels of a disconnect event */
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void bt_l2cap_disconnected(FAR struct bt_conn_s *conn);
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/* Notify L2CAP channels of a change in encryption state */
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void bt_l2cap_encrypt_change(FAR struct bt_conn_s *conn);
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/* Prepare an L2CAP PDU to be sent over a connection */
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FAR struct bt_buf_s *bt_l2cap_create_pdu(FAR struct bt_conn_s *conn);
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/* Send L2CAP PDU over a connection */
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void bt_l2cap_send(FAR struct bt_conn_s *conn, uint16_t cid,
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FAR struct bt_buf_s *buf);
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/* Receive a new L2CAP PDU from a connection */
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void bt_l2cap_receive(FAR struct bt_conn_s *conn, FAR struct bt_buf_s *buf);
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/* Perform connection parameter update request */
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void bt_l2cap_update_conn_param(FAR struct bt_conn_s *conn);
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/* Initialize L2CAP and supported channels */
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int bt_l2cap_init(void);
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#endif /* __WIRELESS_BLUETOOTH_BT_L2CAP_H */
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