contiki/core/net/rime/route-discovery.h
Amit Geron 1b8c889e41 Add route_discovery_explicit_open()
For route discovery connections, 2 logical channels are used:
One channel for netflood messages, and one for unicast.
When opening a route discovery connection using
route_discovery_open(), only the netflood channel number is
specified, and the unicast channel number is hard-coded to be the
next channel (+1).
This commit adds an alternative function for opening
route-discovery connections, allowing the user to specify both
channels independently, to gain improved control and readability.
2015-11-30 11:13:32 +02:00

98 lines
3.3 KiB
C

/*
* Copyright (c) 2007, 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.
*
*/
/**
* \file
* Header file for the Rime mesh routing protocol
* \author
* Adam Dunkels <adam@sics.se>
*/
/**
* \addtogroup rime
* @{
*/
/**
* \defgroup routediscovery Rime route discovery protocol
* @{
*
* The route-discovery module does route discovery for Rime.
*
* \section route-discovery-channels Channels
*
* The ibc module uses 2 channels; one for the flooded route request
* packets and one for the unicast route replies.
*
*/
#ifndef ROUTE_DISCOVERY_H_
#define ROUTE_DISCOVERY_H_
#include "net/rime/unicast.h"
#include "net/rime/netflood.h"
#include "sys/ctimer.h"
struct route_discovery_conn;
struct route_discovery_callbacks {
void (* new_route)(struct route_discovery_conn *c, const linkaddr_t *to);
void (* timedout)(struct route_discovery_conn *c);
};
#define ROUTE_DISCOVERY_ENTRIES 8
struct route_discovery_conn {
struct netflood_conn rreqconn;
struct unicast_conn rrepconn;
struct ctimer t;
linkaddr_t last_rreq_originator;
uint16_t last_rreq_id;
uint16_t rreq_id;
const struct route_discovery_callbacks *cb;
};
void route_discovery_open(struct route_discovery_conn *c, clock_time_t time,
uint16_t channels,
const struct route_discovery_callbacks *callbacks);
void route_discovery_explicit_open(struct route_discovery_conn *c, clock_time_t time,
uint16_t netflood_channel,
uint16_t unicast_channel,
const struct route_discovery_callbacks *callbacks);
int route_discovery_discover(struct route_discovery_conn *c, const linkaddr_t *dest,
clock_time_t timeout);
void route_discovery_close(struct route_discovery_conn *c);
#endif /* ROUTE_DISCOVERY_H_ */
/** @} */
/** @} */