nes-proj/core/net/rime/collect.h

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/*
* 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
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* Header file for hop-by-hop reliable data collection
* \author
* Adam Dunkels <adam@sics.se>
*/
/**
* \addtogroup rime
* @{
*/
/**
* \defgroup rimecollect Tree-based hop-by-hop reliable data collection
* @{
*
* The collect module implements a hop-by-hop reliable data collection
* mechanism.
*
* \section channels Channels
*
* The collect module uses 2 channels; one for neighbor discovery and one
* for data packets.
*
*/
#ifndef COLLECT_H_
#define COLLECT_H_
#include "net/rime/announcement.h"
#include "net/rime/runicast.h"
#include "net/rime/neighbor-discovery.h"
#include "net/rime/collect-neighbor.h"
#include "net/packetqueue.h"
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#include "sys/ctimer.h"
#include "lib/list.h"
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#ifdef COLLECT_CONF_PACKET_ID_BITS
#define COLLECT_PACKET_ID_BITS COLLECT_CONF_PACKET_ID_BITS
#else /* COLLECT_CONF_PACKET_ID_BITS */
#define COLLECT_PACKET_ID_BITS 8
#endif /* COLLECT_CONF_PACKET_ID_BITS */
#ifdef COLLECT_CONF_TTL_BITS
#define COLLECT_TTL_BITS COLLECT_CONF_TTL_BITS
#else /* COLLECT_CONF_TTL_BITS */
#define COLLECT_TTL_BITS 4
#endif /* COLLECT_CONF_TTL_BITS */
#ifdef COLLECT_CONF_HOPS_BITS
#define COLLECT_HOPS_BITS COLLECT_CONF_HOPS_BITS
#else /* COLLECT_CONF_HOPS_BITS */
#define COLLECT_HOPS_BITS 4
#endif /* COLLECT_CONF_HOPS_BITS */
#ifdef COLLECT_CONF_MAX_REXMIT_BITS
#define COLLECT_MAX_REXMIT_BITS COLLECT_CONF_MAX_REXMIT_BITS
#else /* COLLECT_CONF_REXMIT_BITS */
#define COLLECT_MAX_REXMIT_BITS 5
#endif /* COLLECT_CONF_REXMIT_BITS */
#define COLLECT_ATTRIBUTES { PACKETBUF_ADDR_ESENDER, PACKETBUF_ADDRSIZE }, \
{ PACKETBUF_ATTR_EPACKET_ID, PACKETBUF_ATTR_BIT * COLLECT_PACKET_ID_BITS }, \
{ PACKETBUF_ATTR_PACKET_ID, PACKETBUF_ATTR_BIT * COLLECT_PACKET_ID_BITS }, \
{ PACKETBUF_ATTR_TTL, PACKETBUF_ATTR_BIT * COLLECT_TTL_BITS }, \
{ PACKETBUF_ATTR_HOPS, PACKETBUF_ATTR_BIT * COLLECT_HOPS_BITS }, \
{ PACKETBUF_ATTR_MAX_REXMIT, PACKETBUF_ATTR_BIT * COLLECT_MAX_REXMIT_BITS }, \
{ PACKETBUF_ATTR_PACKET_TYPE, PACKETBUF_ATTR_BIT }, \
UNICAST_ATTRIBUTES
struct collect_callbacks {
void (* recv)(const linkaddr_t *originator, uint8_t seqno,
uint8_t hops);
};
/* COLLECT_CONF_ANNOUNCEMENTS defines if the Collect implementation
should use Contiki's announcement primitive to announce its routes
or if it should use periodic broadcasts. */
#ifndef COLLECT_CONF_ANNOUNCEMENTS
#define COLLECT_ANNOUNCEMENTS 1
#else
#define COLLECT_ANNOUNCEMENTS COLLECT_CONF_ANNOUNCEMENTS
#endif /* COLLECT_CONF_ANNOUNCEMENTS */
struct collect_conn {
struct unicast_conn unicast_conn;
#if ! COLLECT_ANNOUNCEMENTS
struct neighbor_discovery_conn neighbor_discovery_conn;
#else /* ! COLLECT_ANNOUNCEMENTS */
struct announcement announcement;
struct ctimer transmit_after_scan_timer;
#endif /* COLLECT_ANNOUNCEMENTS */
const struct collect_callbacks *cb;
struct ctimer retransmission_timer;
LIST_STRUCT(send_queue_list);
struct packetqueue send_queue;
struct collect_neighbor_list neighbor_list;
struct ctimer keepalive_timer;
clock_time_t keepalive_period;
struct ctimer proactive_probing_timer;
linkaddr_t parent, current_parent;
uint16_t rtmetric;
uint8_t seqno;
uint8_t sending, transmissions, max_rexmits;
uint8_t eseqno;
uint8_t is_router;
clock_time_t send_time;
};
enum {
COLLECT_NO_ROUTER,
COLLECT_ROUTER,
};
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void collect_open(struct collect_conn *c, uint16_t channels,
uint8_t is_router,
const struct collect_callbacks *callbacks);
void collect_close(struct collect_conn *c);
int collect_send(struct collect_conn *c, int rexmits);
void collect_set_sink(struct collect_conn *c, int should_be_sink);
int collect_depth(struct collect_conn *c);
const linkaddr_t *collect_parent(struct collect_conn *c);
void collect_set_keepalive(struct collect_conn *c, clock_time_t period);
void collect_print_stats(void);
#define COLLECT_MAX_DEPTH (COLLECT_LINK_ESTIMATE_UNIT * 64 - 1)
#endif /* COLLECT_H_ */
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/** @} */
/** @} */