142 lines
4.5 KiB
C
142 lines
4.5 KiB
C
/*
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* Copyright (c) 2017, Inria.
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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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* \addtogroup rpl-lite
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* @{
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*
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* \file
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* Header file for rpl-ext-header
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*
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* \author Simon Duquennoy <simon.duquennoy@inria.fr>
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*/
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#ifndef RPL_ICMP6_H_
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#define RPL_ICMP6_H_
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#include "uip.h"
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#include "uip-ds6.h"
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#include "uip-ds6-nbr.h"
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/********** Data structures **********/
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/* Logical representation of a DAG Information Object (DIO.) */
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struct rpl_dio {
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uip_ipaddr_t dag_id;
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rpl_ocp_t ocp;
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rpl_rank_t rank;
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uint8_t grounded;
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uint8_t mop;
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uint8_t preference;
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uint8_t version;
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uint8_t instance_id;
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uint8_t dtsn;
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uint8_t dag_intdoubl;
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uint8_t dag_intmin;
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uint8_t dag_redund;
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uint8_t default_lifetime;
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uint16_t lifetime_unit;
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rpl_rank_t dag_max_rankinc;
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rpl_rank_t dag_min_hoprankinc;
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rpl_prefix_t destination_prefix;
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rpl_prefix_t prefix_info;
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struct rpl_metric_container mc;
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};
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typedef struct rpl_dio rpl_dio_t;
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/* Logical representation of a Destination Advertisement Object (DAO.) */
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struct rpl_dao {
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uip_ipaddr_t parent_addr;
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uip_ipaddr_t prefix;
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uint16_t sequence;
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uint8_t instance_id;
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uint8_t lifetime;
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uint8_t prefixlen;
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uint8_t flags;
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};
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typedef struct rpl_dao rpl_dao_t;
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/********** Public functions **********/
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/**
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* Updates IPv6 neighbor cache on incoming link-local RPL ICMPv6 messages.
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*
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* \param from The source link-local IPv6 address
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* \param reason What triggered the update (maps to RPL packet types)
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* \param data Generic pointer, used for instance to store parsed DIO data
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* \return A pointer to the new neighbor cache entry, NULL if there was no space left.
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*/
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uip_ds6_nbr_t *rpl_icmp6_update_nbr_table(uip_ipaddr_t *from, nbr_table_reason_t reason, void *data);
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/**
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* Creates an ICMPv6 DIS packet and sends it. Can be unicast or multicast.
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*
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* \param addr The link-local address of the target host, if any.
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* Else, a multicast DIS will be sent.
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*/
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void rpl_icmp6_dis_output(uip_ipaddr_t *addr);
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/**
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* Creates an ICMPv6 DIO packet and sends it. Can be unicast or multicast
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*
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* \param uc_addr The link-local address of the target host, if any.
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* Else, a multicast DIO will be sent.
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*/
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void rpl_icmp6_dio_output(uip_ipaddr_t *uc_addr);
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/**
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* Creates an ICMPv6 DAO packet and sends it to the root, advertising the
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* current preferred parent, and with our global address as prefix.
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*
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* \param lifetime The DAO lifetime. Use 0 to send a No-path DAO
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*/
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void rpl_icmp6_dao_output(uint8_t lifetime);
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/**
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* Creates an ICMPv6 DAO-ACK packet and sends it to the originator
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* of the ACK.
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*
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* \param dest The DAO-ACK destination (was source of the DAO)
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* \param sequence The sequence number of the DAO being ACKed
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* \param status The status of the DAO-ACK (see RPL_DAO_ACK_* defines)
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*/
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void rpl_icmp6_dao_ack_output(uip_ipaddr_t *dest, uint8_t sequence, uint8_t status);
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/**
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* Initializes rpl-icmp6 module, registers ICMPv6 handlers for all
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* RPL ICMPv6 messages: DIO, DIS, DAO and DAO-ACK
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*/
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void rpl_icmp6_init(void);
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/** @} */
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#endif /* RPL_ICMP6_H_ */
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