nes-proj/os/net/rpl-lite/rpl-dag-root.h

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/*
* Copyright (c) 2012-2014, Thingsquare, http://www.thingsquare.com/.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef RPL_DAG_ROOT_H_
#define RPL_DAG_ROOT_H_
/**
2017-09-29 20:18:48 +00:00
* \addtogroup rpl-lite
* @{
*
* \file
* DAG root utility functions for RPL.
*/
/********** Public functions **********/
/**
* Initialize dag-root module and sets a prefix in case the node is later
* set as dag root.
*
* \param prefix The prefix. If NULL, UIP_DS6_DEFAULT_PREFIX is used instead
* \param iid The IID. If NULL, it will be built from uip_ds6_set_addr_iid.
*/
void rpl_dag_root_init(uip_ipaddr_t *prefix, uip_ipaddr_t *iid);
/**
* Initializes the node as DAG root after a delay. Until the delay, the node
* gets a chance to hear another DAG and join it instead.
*/
void rpl_dag_root_init_dag_delay(void);
/**
* Initializes the node as DAG root immediatly.
*
* \return 0 in case of success, -1 otherwise
*/
int rpl_dag_root_init_dag_immediately(void);
/**
* Tells whether we are DAG root or not
*
* \return 1 if we are dag root, 0 otherwise
*/
int rpl_dag_root_is_root(void);
/** @} */
#endif /* RPL_DAG_ROOT_H_ */