106 lines
4.1 KiB
C
106 lines
4.1 KiB
C
/*
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* Copyright (c) 2014, SICS Swedish ICT.
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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 Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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#ifndef __TSCH_PACKET_H__
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#define __TSCH_PACKET_H__
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/********** Includes **********/
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#include "contiki.h"
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#include "net/packetbuf.h"
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#include "net/mac/tsch/tsch-private.h"
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#include "net/mac/frame802154.h"
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#include "net/mac/frame802154e-ie.h"
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/******** Configuration *******/
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/* TSCH EB: include timeslot timing Information Element? */
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#ifdef TSCH_PACKET_CONF_EB_WITH_TIMESLOT_TIMING
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#define TSCH_PACKET_EB_WITH_TIMESLOT_TIMING TSCH_PACKET_CONF_EB_WITH_TIMESLOT_TIMING
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#else
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#define TSCH_PACKET_EB_WITH_TIMESLOT_TIMING 0
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#endif
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/* TSCH EB: include hopping sequence Information Element? */
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#ifdef TSCH_PACKET_CONF_EB_WITH_HOPPING_SEQUENCE
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#define TSCH_PACKET_EB_WITH_HOPPING_SEQUENCE TSCH_PACKET_CONF_EB_WITH_HOPPING_SEQUENCE
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#else
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#define TSCH_PACKET_EB_WITH_HOPPING_SEQUENCE 0
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#endif
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/* TSCH EB: include slotframe and link Information Element? */
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#ifdef TSCH_PACKET_CONF_EB_WITH_SLOTFRAME_AND_LINK
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#define TSCH_PACKET_EB_WITH_SLOTFRAME_AND_LINK TSCH_PACKET_CONF_EB_WITH_SLOTFRAME_AND_LINK
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#else
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#define TSCH_PACKET_EB_WITH_SLOTFRAME_AND_LINK 0
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#endif
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/* Include source address in ACK? */
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#ifdef TSCH_PACKET_CONF_EACK_WITH_SRC_ADDR
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#define TSCH_PACKET_EACK_WITH_SRC_ADDR TSCH_PACKET_CONF_EACK_WITH_SRC_ADDR
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#else
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#define TSCH_PACKET_EACK_WITH_SRC_ADDR 0
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#endif
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/* Include destination address in ACK? */
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#ifdef TSCH_PACKET_CONF_EACK_WITH_DEST_ADDR
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#define TSCH_PACKET_EACK_WITH_DEST_ADDR TSCH_PACKET_CONF_EACK_WITH_DEST_ADDR
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#else
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#define TSCH_PACKET_EACK_WITH_DEST_ADDR 1 /* Include destination address
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by default, useful in case of duplicate seqno */
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#endif
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/********** Constants *********/
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/* Max TSCH packet lenght */
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#define TSCH_PACKET_MAX_LEN MIN(127,PACKETBUF_SIZE)
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/********** Functions *********/
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/* Construct enhanced ACK packet and return ACK length */
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int tsch_packet_create_eack(uint8_t *buf, int buf_size,
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const linkaddr_t *dest_addr, uint8_t seqno, int16_t drift, int nack);
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/* Parse enhanced ACK packet, extract drift and nack */
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int tsch_packet_parse_eack(const uint8_t *buf, int buf_size,
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uint8_t seqno, frame802154_t *frame, struct ieee802154_ies *ies, uint8_t *hdr_len);
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/* Create an EB packet */
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int tsch_packet_create_eb(uint8_t *buf, int buf_size,
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uint8_t *hdr_len, uint8_t *tsch_sync_ie_ptr);
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/* Update ASN in EB packet */
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int tsch_packet_update_eb(uint8_t *buf, int buf_size, uint8_t tsch_sync_ie_offset);
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/* Parse EB and extract ASN and join priority */
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int tsch_packet_parse_eb(const uint8_t *buf, int buf_size,
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frame802154_t *frame, struct ieee802154_ies *ies,
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uint8_t *hdrlen, int frame_without_mic);
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#endif /* __TSCH_PACKET_H__ */
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