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/*
* Copyright (C) 2016 Cenk Gündoğan <mail@cgundogan.de>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @defgroup net_gnrc_rpl_p2p Reactive Discovery of P2P Routes in LLNs
* @ingroup net_gnrc_rpl
* @brief Implementation of P2P-RPL
* @see <a href="https://tools.ietf.org/html/rfc6997">
* RFC 6997
* </a>
* @{
*
* @file
* @brief Definititions for P2P-RPL
*
* @author Cenk Gündoğan <mail@cgundogan.de>
*/
#ifndef NET_GNRC_RPL_P2P_H
#define NET_GNRC_RPL_P2P_H
#include "net/ipv6/addr.h"
#include "net/gnrc.h"
#include "net/gnrc/rpl/structs.h"
#include "net/gnrc/rpl/p2p_structs.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief P2P-RPL Mode of Operation
*/
#define GNRC_RPL_P2P_MOP (0x04)
/**
* @brief Default lifetime of the P2P-RPL DODAG, encoded
* @see <a href="https://tools.ietf.org/html/rfc6997#section-7">
* RFC 6997, section 7, P2P Route Discovery Option (P2P-RDO)
* </a>
*/
#define GNRC_RPL_P2P_LIFETIME (0x02)
/**
* @brief Number of elided prefix octets from the target field and address vector
* @see <a href="https://tools.ietf.org/html/rfc6997#section-7">
* RFC 6997, section 7, P2P Route Discovery Option (P2P-RDO)
* </a>
*/
#define GNRC_RPL_P2P_COMPR (0)
/**
* @brief Maximum rank in the DODAG during the route discovery
* @see <a href="https://tools.ietf.org/html/rfc6997#section-7">
* RFC 6997, section 7, P2P Route Discovery Option (P2P-RDO)
* </a>
*/
#define GNRC_RPL_P2P_MAX_RANK (0)
/**
* @name Trickle parameters
* @see <a href="https://tools.ietf.org/html/rfc6997#section-6.1">
* RFC 6997, section 6.1, Setting a P2P Mode DIO
* </a>
* @{
*/
#define GNRC_RPL_P2P_DEFAULT_DIO_INTERVAL_MIN (6)
#define GNRC_RPL_P2P_DEFAULT_DIO_REDUNDANCY_CONSTANT (1)
/** @} */
/**
* @name Default parent and route entry lifetime
* default lifetime will be multiplied by the lifetime unit to obtain the resulting lifetime
* @{
*/
#define GNRC_RPL_P2P_DEFAULT_LIFETIME (0xFF)
#define GNRC_RPL_P2P_LIFETIME_UNIT (0xFFFF)
/** @} */
/**
* @brief P2P-RPL RDO DIO option type
* @see <a href="https://tools.ietf.org/html/rfc6997#section-7">
* RFC 6997, section 7, P2P Route Discovery Option (P2P-RDO)
* </a>
*/
#define GNRC_RPL_P2P_OPT_RDO (0x0A)
/**
* @brief DRO ICMPv6 code
* @see <a href="https://tools.ietf.org/html/rfc6997#section-8">
* RFC 6997, section 8, The P2P Discovery Reply Object (P2P-DRO)
* </a>
*/
#define GNRC_RPL_P2P_ICMPV6_CODE_DRO (0x04)
/**
* @brief DRO-ACK ICMPv6 code
* @see <a href="https://tools.ietf.org/html/rfc6997#section-10">
* RFC 6997, section 10, The P2P Discovery Reply Object Acknowledgement (P2P-DRO-ACK)
* </a>
*/
#define GNRC_RPL_P2P_ICMPV6_CODE_DRO_ACK (0x05)
/**
* @brief Time in seconds to wait before sending a DRO
*/
#define GNRC_RPL_P2P_DRO_DELAY (4)
/**
* @brief Message type for handling DRO sending
*/
#define GNRC_RPL_P2P_MSG_TYPE_DRO_HANDLE (0x09A0)
/**
* @brief Lookup table used to decode/encode the lifetime values
*/
extern const uint8_t gnrc_rpl_p2p_lifetime_lookup[4];
/**
* @brief Initialization of a P2P-RPL Instance as root node.
*
* @param[in] instance_id Id of the instance
* @param[in] dodag_id Id of the DODAG
* @param[in] target Target of the P2P-RPL routes discovery
* @param[in] gen_inst_id Flag indicating whether to generate a local isntance id.
* If true, @p instance_id will be ignored
*
* @return Pointer to the new Instance, on success.
* @return NULL, otherwise.
*/
gnrc_rpl_instance_t *gnrc_rpl_p2p_root_init(uint8_t instance_id, ipv6_addr_t *dodag_id,
ipv6_addr_t *target, bool gen_inst_id);
/**
* @brief Build an RDO
*
* @param[in,out] pkt The RDO will be added to the @p pkt
* @param[in] p2p_ext Pointer to the P2P-RPL DODAG extension
*/
gnrc_pktsnip_t *gnrc_rpl_p2p_rdo_build(gnrc_pktsnip_t *pkt, gnrc_rpl_p2p_ext_t *p2p_ext);
/**
* @brief Parse an RDO
*
* @param[in] rdo The RDO to parse from.
* @param[in] p2p_ext Pointer to the P2P-RPL DODAG extension
*/
void gnrc_rpl_p2p_rdo_parse(gnrc_rpl_p2p_opt_rdo_t *rdo, gnrc_rpl_p2p_ext_t *p2p_ext);
/**
* @brief Send a DRO control message
*
* @param[in] pkt The ICMPv6 packet to send. Can be NULL.
* @param[in] p2p_ext Pointer to the P2P-RPL DODAG extension
*/
void gnrc_rpl_p2p_send_DRO(gnrc_pktsnip_t *pkt, gnrc_rpl_p2p_ext_t *p2p_ext);
/**
* @brief Receive and parse a DRO control message
*
* @param[in] pkt The ICMPv6 packet to parse.
* @param[in] src The source address of the IPv6 packet.
*/
void gnrc_rpl_p2p_recv_DRO(gnrc_pktsnip_t *pkt, ipv6_addr_t *src);
/**
* @brief Updates the lifetime of the P2P Dodag and the delay of the DRO
*/
void gnrc_rpl_p2p_update(void);
#ifdef __cplusplus
}
#endif
#endif /* NET_GNRC_RPL_P2P_H */
/** @} */
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