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667dd6a210
struct asn_t -> struct tsch_asn_t struct asn_divisor_t -> tsch_asn_divisor_t ASN_ macros -> TSCH_ASN_ macros current_asn -> tsch_current_asn
121 lines
5.0 KiB
C
121 lines
5.0 KiB
C
/*
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* Copyright (c) 2015, 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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/**
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* \file
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* IEEE 802.15.4e Information Element (IE) creation and parsing.
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* \author
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* Simon Duquennoy <simonduq@sics.se>
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*/
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#ifndef FRAME_802154E_H
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#define FRAME_802154E_H
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#include "contiki.h"
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/* We need definitions from tsch-private.h for TSCH-specific information elements */
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#include "net/mac/tsch/tsch-private.h"
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#define FRAME802154E_IE_MAX_LINKS 4
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/* Structures used for the Slotframe and Links information element */
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struct tsch_slotframe_and_links_link {
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uint16_t timeslot;
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uint16_t channel_offset;
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uint8_t link_options;
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};
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struct tsch_slotframe_and_links {
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uint8_t num_slotframes; /* We support only 0 or 1 slotframe in this IE */
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uint8_t slotframe_handle;
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uint16_t slotframe_size;
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uint8_t num_links;
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struct tsch_slotframe_and_links_link links[FRAME802154E_IE_MAX_LINKS];
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};
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/* The information elements that we currently support */
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struct ieee802154_ies {
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/* Header IEs */
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int16_t ie_time_correction;
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uint8_t ie_is_nack;
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/* Payload MLME */
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uint8_t ie_payload_ie_offset;
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uint16_t ie_mlme_len;
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/* Payload Short MLME IEs */
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uint8_t ie_tsch_synchronization_offset;
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struct tsch_asn_t ie_asn;
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uint8_t ie_join_priority;
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uint8_t ie_tsch_timeslot_id;
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uint16_t ie_tsch_timeslot[tsch_ts_elements_count];
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struct tsch_slotframe_and_links ie_tsch_slotframe_and_link;
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/* Payload Long MLME IEs */
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uint8_t ie_channel_hopping_sequence_id;
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/* We include and parse only the sequence len and list and omit unused fields */
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uint16_t ie_hopping_sequence_len;
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uint8_t ie_hopping_sequence_list[TSCH_HOPPING_SEQUENCE_MAX_LEN];
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};
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/** Insert various Information Elements **/
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/* Header IE. ACK/NACK time correction. Used in enhanced ACKs */
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int frame80215e_create_ie_header_ack_nack_time_correction(uint8_t *buf, int len,
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struct ieee802154_ies *ies);
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/* Header IE. List termination 1 (Signals the end of the Header IEs when
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* followed by payload IEs) */
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int frame80215e_create_ie_header_list_termination_1(uint8_t *buf, int len,
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struct ieee802154_ies *ies);
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/* Header IE. List termination 2 (Signals the end of the Header IEs when
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* followed by an unformatted payload) */
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int frame80215e_create_ie_header_list_termination_2(uint8_t *buf, int len,
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struct ieee802154_ies *ies);
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/* Payload IE. List termination */
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int frame80215e_create_ie_payload_list_termination(uint8_t *buf, int len,
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struct ieee802154_ies *ies);
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/* Payload IE. MLME. Used to nest sub-IEs */
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int frame80215e_create_ie_mlme(uint8_t *buf, int len,
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struct ieee802154_ies *ies);
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/* MLME sub-IE. TSCH synchronization. Used in EBs: ASN and join priority */
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int frame80215e_create_ie_tsch_synchronization(uint8_t *buf, int len,
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struct ieee802154_ies *ies);
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/* MLME sub-IE. TSCH slotframe and link. Used in EBs: initial schedule */
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int frame80215e_create_ie_tsch_slotframe_and_link(uint8_t *buf, int len,
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struct ieee802154_ies *ies);
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/* MLME sub-IE. TSCH timeslot. Used in EBs: timeslot template (timing) */
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int frame80215e_create_ie_tsch_timeslot(uint8_t *buf, int len,
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struct ieee802154_ies *ies);
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/* MLME sub-IE. TSCH channel hopping sequence. Used in EBs: hopping sequence */
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int frame80215e_create_ie_tsch_channel_hopping_sequence(uint8_t *buf, int len,
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struct ieee802154_ies *ies);
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/* Parse all Information Elements of a frame */
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int frame802154e_parse_information_elements(const uint8_t *buf, uint8_t buf_size,
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struct ieee802154_ies *ies);
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#endif /* FRAME_802154E_H */
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