128 lines
4.3 KiB
C
128 lines
4.3 KiB
C
/*
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* Copyright (c) 2017, Graz University of Technology
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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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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* 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
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* from 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
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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* MAC layer that implements BLE L2CAP credit-based flow control
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* channels to support IPv6 over BLE (RFC 7668)
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*
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* \author
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* Michael Spoerk <michael.spoerk@tugraz.at>
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*/
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/*---------------------------------------------------------------------------*/
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#ifndef BLE_L2CAP_H_
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#define BLE_L2CAP_H_
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#include "contiki.h"
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#include "net/mac/mac.h"
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#include "dev/radio.h"
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/*---------------------------------------------------------------------------*/
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/* device name used for BLE advertisement */
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#ifdef BLE_CONF_DEVICE_NAME
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#define BLE_DEVICE_NAME BLE_CONF_DEVICE_NAME
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#else
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#define BLE_DEVICE_NAME "BLE device name"
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#endif
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/* BLE advertisement in milliseconds */
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#ifdef BLE_CONF_ADV_INTERVAL
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#define BLE_ADV_INTERVAL BLE_CONF_ADV_INTERVAL
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#else
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#define BLE_ADV_INTERVAL 50
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#endif
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#define BLE_SLAVE_CONN_INTERVAL_MIN 0x0150
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#define BLE_SLAVE_CONN_INTERVAL_MAX 0x01F0
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#define L2CAP_SIGNAL_CHANNEL 0x0005
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#define L2CAP_FLOW_CHANNEL 0x0041
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#define L2CAP_CODE_CONN_UPDATE_REQ 0x12
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#define L2CAP_CODE_CONN_UPDATE_RSP 0x13
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#define L2CAP_CODE_CONN_REQ 0x14
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#define L2CAP_CODE_CONN_RSP 0x15
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#define L2CAP_CODE_CREDIT 0x16
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#define L2CAP_IPSP_PSM 0x0023
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/* the maximum MTU size of the L2CAP channel */
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#ifdef BLE_L2CAP_CONF_NODE_MTU
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#define BLE_L2CAP_NODE_MTU BLE_L2CAP_CONF_NODE_MTU
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#else
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#define BLE_L2CAP_NODE_MTU 1280
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#endif
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/* the max. supported L2CAP fragment length */
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#ifdef BLE_L2CAP_CONF_NODE_FRAG_LEN
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#define BLE_L2CAP_NODE_FRAG_LEN BLE_L2CAP_CONF_NODE_FRAG_LEN
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#else
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#ifdef BLE_MODE_CONF_CONN_MAX_PACKET_SIZE
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#define BLE_L2CAP_NODE_FRAG_LEN BLE_MODE_CONF_CONN_MAX_PACKET_SIZE
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#else
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#define BLE_L2CAP_NODE_FRAG_LEN 256
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#endif
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#endif
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#define L2CAP_CREDIT_NEW (BLE_L2CAP_NODE_MTU / BLE_L2CAP_NODE_FRAG_LEN)
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#define L2CAP_CREDIT_THRESHOLD 2
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#define L2CAP_INIT_INTERVAL (2 * CLOCK_SECOND)
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/* BLE connection interval in milliseconds */
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#ifdef BLE_CONF_CONNECTION_INTERVAL
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#define CONNECTION_INTERVAL_MS BLE_CONF_CONNECTION_INTERVAL
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#else
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#define CONNECTION_INTERVAL_MS 125
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#endif
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/* BLE slave latency */
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#ifdef BLE_CONF_CONNECTION_SLAVE_LATENCY
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#define CONNECTION_SLAVE_LATENCY BLE_CONF_CONNECTION_SLAVE_LATENCY
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#else
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#define CONNECTION_SLAVE_LATENCY 0
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#endif
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/* BLE supervision timeout */
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#define CONNECTION_TIMEOUT 42
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#define L2CAP_FIRST_HEADER_SIZE 6
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#define L2CAP_SUBSEQ_HEADER_SIZE 4
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#if UIP_CONF_ROUTER
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#ifdef BLE_MODE_CONF_MAX_CONNECTIONS
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#define L2CAP_CHANNELS BLE_MODE_CONF_MAX_CONNECTIONS
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#else
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#define L2CAP_CHANNELS 1
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#endif
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#else
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#define L2CAP_CHANNELS 1
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#endif
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extern const struct mac_driver ble_l2cap_driver;
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#endif /* BLE_L2CAP_H_ */
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