nes-proj/os/net/routing/rpl-lite/rpl.h

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/*
* Copyright (c) 2010, Swedish Institute of Computer Science.
* 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 Institute 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 INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*
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* \ingroup net-layer
* \addtogroup rpl-lite
RPL-lite is a lightweight implementation of RPL tailored for reliability.
Supports only non-storing mode, one instance and one DAG.
* @{
*
* \file
* Public API declarations for RPL.
* \author
* Joakim Eriksson <joakime@sics.se> & Nicolas Tsiftes <nvt@sics.se>
* Simon Duquennoy <simon.duquennoy@inria.fr>
*
*/
#ifndef RPL_H
#define RPL_H
/********** Includes **********/
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#include "net/ipv6/uip.h"
#include "net/routing/rpl-lite/rpl-const.h"
#include "net/routing/rpl-lite/rpl-conf.h"
#include "net/routing/rpl-lite/rpl-types.h"
#include "net/routing/rpl-lite/rpl-icmp6.h"
#include "net/routing/rpl-lite/rpl-dag.h"
#include "net/routing/rpl-lite/rpl-dag-root.h"
#include "net/routing/rpl-lite/rpl-neighbor.h"
#include "net/routing/rpl-lite/rpl-ext-header.h"
#include "net/routing/rpl-lite/rpl-timers.h"
/********** Public symbols **********/
/* The only instance */
extern rpl_instance_t curr_instance;
/* The RPL multicast address (used for DIS and DIO) */
extern uip_ipaddr_t rpl_multicast_addr;
/********** Public functions **********/
/**
* Called by lower layers after every packet transmission
*
* \param addr The link-layer addrress of the packet destination
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* \param status The transmission status (see os/net/mac/mac.h)
* \param numtx The total number of transmission attempts
*/
void rpl_link_callback(const linkaddr_t *addr, int status, int numtx);
/**
* Set prefix from an prefix data structure (from DIO)
*
* \param prefix The prefix
* \return 1 if success, 0 otherwise
*/
int rpl_set_prefix(rpl_prefix_t *prefix);
/**
* Set prefix from an IPv6 address
*
* \param addr The prefix
* \param len The prefix length
* \param flags The DIO prefix flags
* \return 1 if success, 0 otherwise
*/
int rpl_set_prefix_from_addr(uip_ipaddr_t *addr, unsigned len, uint8_t flags);
/**
* Removes current prefx
*
* \param last_prefix The last prefix (which is to be removed)
*/
void rpl_reset_prefix(rpl_prefix_t *last_prefix);
/**
* Get one of the node's global addresses
*
* \return A (constant) pointer to the global IPv6 address found.
* The pointer directs to the internals of DS6, should only be used
* in the current function's local scope
*/
const uip_ipaddr_t *rpl_get_global_address(void);
/**
* Get the RPL's best guess on if we are reachable via have downward route or not.
*
* \return 1 if we are reachable, 0 otherwise.
*/
int rpl_is_reachable(void);
/**
* Greater-than function for a lollipop counter
*
* \param a The first counter
* \param b The second counter
* \return 1 is a>b else 0
*/
int rpl_lollipop_greater_than(int a, int b);
/**
* Triggers a route fresh via DTSN increment
*
* \param str a textual description of the cause for refresh
*/
void rpl_refresh_routes(const char *str);
/** @} */
#endif /* RPL_H */