nes-proj/os/net/mac/tsch/tsch.h
2017-10-12 17:09:07 +02:00

219 lines
7.3 KiB
C

/*
* Copyright (c) 2015, SICS Swedish ICT.
* 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.
*
*/
/**
* \ingroup link-layer
* \defgroup tsch 802.15.4 TSCH
The IEEE 802.15.4-2015 TimeSlotted Channel Hopping (TSCH) protocol. Provides
scheduled communication on top of a globally-synchronized network. Performs
frequency hopping for enhanced reliability.
* @{
*/
#ifndef __TSCH_H__
#define __TSCH_H__
/********** Includes **********/
#include "contiki.h"
#include "net/mac/mac.h"
#include "net/mac/tsch/tsch-security.h"
/******** Configuration *******/
/* Max time before sending a unicast keep-alive message to the time source */
#ifdef TSCH_CONF_KEEPALIVE_TIMEOUT
#define TSCH_KEEPALIVE_TIMEOUT TSCH_CONF_KEEPALIVE_TIMEOUT
#else
/* Time to desynch assuming a drift of 40 PPM (80 PPM between two nodes) and guard time of +/-1ms: 12.5s. */
#define TSCH_KEEPALIVE_TIMEOUT (12 * CLOCK_SECOND)
#endif
/* With TSCH_ADAPTIVE_TIMESYNC enabled: keep-alive timeout used after reaching
* accurate drift compensation. */
#ifdef TSCH_CONF_MAX_KEEPALIVE_TIMEOUT
#define TSCH_MAX_KEEPALIVE_TIMEOUT TSCH_CONF_MAX_KEEPALIVE_TIMEOUT
#else
#define TSCH_MAX_KEEPALIVE_TIMEOUT (60 * CLOCK_SECOND)
#endif
/* Max time without synchronization before leaving the PAN */
#ifdef TSCH_CONF_DESYNC_THRESHOLD
#define TSCH_DESYNC_THRESHOLD TSCH_CONF_DESYNC_THRESHOLD
#else
#define TSCH_DESYNC_THRESHOLD (2 * TSCH_MAX_KEEPALIVE_TIMEOUT)
#endif
/* Period between two consecutive EBs */
#ifdef TSCH_CONF_EB_PERIOD
#define TSCH_EB_PERIOD TSCH_CONF_EB_PERIOD
#else
#define TSCH_EB_PERIOD (16 * CLOCK_SECOND)
#endif
/* Max Period between two consecutive EBs */
#ifdef TSCH_CONF_MAX_EB_PERIOD
#define TSCH_MAX_EB_PERIOD TSCH_CONF_MAX_EB_PERIOD
#else
#define TSCH_MAX_EB_PERIOD (16 * CLOCK_SECOND)
#endif
/* Max acceptable join priority */
#ifdef TSCH_CONF_MAX_JOIN_PRIORITY
#define TSCH_MAX_JOIN_PRIORITY TSCH_CONF_MAX_JOIN_PRIORITY
#else
#define TSCH_MAX_JOIN_PRIORITY 32
#endif
/* Start TSCH automatically after init? If not, the upper layers
* must call NETSTACK_MAC.on() to start it. Useful when the
* application needs to control when the nodes are to start
* scanning or advertising.*/
#ifdef TSCH_CONF_AUTOSTART
#define TSCH_AUTOSTART TSCH_CONF_AUTOSTART
#else
#define TSCH_AUTOSTART 1
#endif
/* Join only secured networks? (discard EBs with security disabled) */
#ifdef TSCH_CONF_JOIN_SECURED_ONLY
#define TSCH_JOIN_SECURED_ONLY TSCH_CONF_JOIN_SECURED_ONLY
#else
/* By default, set if LLSEC802154_ENABLED is also non-zero */
#define TSCH_JOIN_SECURED_ONLY LLSEC802154_ENABLED
#endif
/* By default, join any PAN ID. Otherwise, wait for an EB from IEEE802154_PANID */
#ifdef TSCH_CONF_JOIN_MY_PANID_ONLY
#define TSCH_JOIN_MY_PANID_ONLY TSCH_CONF_JOIN_MY_PANID_ONLY
#else
#define TSCH_JOIN_MY_PANID_ONLY 1
#endif
/* The radio polling frequency (in Hz) during association process */
#ifdef TSCH_CONF_ASSOCIATION_POLL_FREQUENCY
#define TSCH_ASSOCIATION_POLL_FREQUENCY TSCH_CONF_ASSOCIATION_POLL_FREQUENCY
#else
#define TSCH_ASSOCIATION_POLL_FREQUENCY 100
#endif
/* When associating, check ASN against our own uptime (time in minutes)..
* Useful to force joining only with nodes started roughly at the same time.
* Set to the max number of minutes acceptable. */
#ifdef TSCH_CONF_CHECK_TIME_AT_ASSOCIATION
#define TSCH_CHECK_TIME_AT_ASSOCIATION TSCH_CONF_CHECK_TIME_AT_ASSOCIATION
#else
#define TSCH_CHECK_TIME_AT_ASSOCIATION 0
#endif
/* By default: initialize schedule from EB when associating, using the
* slotframe and links Information Element */
#ifdef TSCH_CONF_INIT_SCHEDULE_FROM_EB
#define TSCH_INIT_SCHEDULE_FROM_EB TSCH_CONF_INIT_SCHEDULE_FROM_EB
#else
#define TSCH_INIT_SCHEDULE_FROM_EB 1
#endif
/* An ad-hoc mechanism to have TSCH select its time source without the
* help of an upper-layer, simply by collecting statistics on received
* EBs and their join priority. Disabled by default as we recomment
* mapping the time source on the RPL preferred parent
* (via tsch_rpl_callback_parent_switch) */
#ifdef TSCH_CONF_AUTOSELECT_TIME_SOURCE
#define TSCH_AUTOSELECT_TIME_SOURCE TSCH_CONF_AUTOSELECT_TIME_SOURCE
#else
#define TSCH_AUTOSELECT_TIME_SOURCE 0
#endif /* TSCH_CONF_EB_AUTOSELECT */
/* To include Sixtop Implementation */
#ifdef TSCH_CONF_WITH_SIXTOP
#define TSCH_WITH_SIXTOP TSCH_CONF_WITH_SIXTOP
#else
#define TSCH_WITH_SIXTOP 0
#endif /* TSCH_CONF_EB_AUTOSELECT */
/*********** Callbacks *********/
/* Link callbacks to RPL in case RPL is enabled */
#if UIP_CONF_IPV6_RPL
#ifndef TSCH_CALLBACK_JOINING_NETWORK
#define TSCH_CALLBACK_JOINING_NETWORK tsch_rpl_callback_joining_network
#endif /* TSCH_CALLBACK_JOINING_NETWORK */
#ifndef TSCH_CALLBACK_LEAVING_NETWORK
#define TSCH_CALLBACK_LEAVING_NETWORK tsch_rpl_callback_leaving_network
#endif /* TSCH_CALLBACK_LEAVING_NETWORK */
#ifndef TSCH_CALLBACK_KA_SENT
#define TSCH_CALLBACK_KA_SENT tsch_rpl_callback_ka_sent
#endif /* TSCH_CALLBACK_KA_SENT */
#endif /* UIP_CONF_IPV6_RPL */
/* Called by TSCH when joining a network */
#ifdef TSCH_CALLBACK_JOINING_NETWORK
void TSCH_CALLBACK_JOINING_NETWORK();
#endif
/* Called by TSCH when leaving a network */
#ifdef TSCH_CALLBACK_LEAVING_NETWORK
void TSCH_CALLBACK_LEAVING_NETWORK();
#endif
/***** External Variables *****/
/* Are we coordinator of the TSCH network? */
extern int tsch_is_coordinator;
/* Are we associated to a TSCH network? */
extern int tsch_is_associated;
/* Is the PAN running link-layer security? */
extern int tsch_is_pan_secured;
/* The TSCH MAC driver */
extern const struct mac_driver tschmac_driver;
/********** Functions *********/
/* The the TSCH join priority */
void tsch_set_join_priority(uint8_t jp);
/* The period at which EBs are sent */
void tsch_set_eb_period(uint32_t period);
/* The keep-alive timeout */
void tsch_set_ka_timeout(uint32_t timeout);
/* Set the node as PAN coordinator */
void tsch_set_coordinator(int enable);
/* Set the pan as secured or not */
void tsch_set_pan_secured(int enable);
#endif /* __TSCH_H__ */
/** @} */