osd-contiki/core/net/rime/collect.h
adamdunkels 591766e663 Significant improvements to the Collect protocol:
* Loop detection and untangling. Now uses in-band loop detection that
  works.

* Link quality estimation. Now starts with a conservative /
  pessimistic estimate for new links.

* Retransmissions. MAC layer and network layer retransmissions are now
  decoupled.

* Loss handling. Deals better with losses now.

* Concurrent applications. Each connection now maintains its own
  neighbor table with separated cost to sink estimates for each
  connection.
2010-09-13 13:28:14 +00:00

132 lines
4.4 KiB
C

/**
* \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.
*
*/
/*
* 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.
*
* $Id: collect.h,v 1.20 2010/09/13 13:28:14 adamdunkels Exp $
*/
/**
* \file
* Header file for hop-by-hop reliable data collection
* \author
* Adam Dunkels <adam@sics.se>
*/
#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"
#include "sys/ctimer.h"
#include "lib/list.h"
#define COLLECT_PACKET_ID_BITS 8
#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 * 4 }, \
{ PACKETBUF_ATTR_HOPS, PACKETBUF_ATTR_BIT * 4 }, \
{ PACKETBUF_ATTR_MAX_REXMIT, PACKETBUF_ATTR_BIT * 4 }, \
{ PACKETBUF_ATTR_PACKET_TYPE, PACKETBUF_ATTR_BIT }, \
UNICAST_ATTRIBUTES
struct collect_callbacks {
void (* recv)(const rimeaddr_t *originator, uint8_t seqno,
uint8_t hops);
};
struct collect_conn {
struct unicast_conn unicast_conn;
#if ! COLLECT_CONF_ANNOUNCEMENTS
struct neighbor_discovery_conn neighbor_discovery_conn;
#else /* ! COLLECT_CONF_ANNOUNCEMENTS */
struct announcement announcement;
struct ctimer transmit_after_scan_timer;
#endif /* COLLECT_CONF_ANNOUNCEMENTS */
const struct collect_callbacks *cb;
struct ctimer t;
struct ctimer retransmission_timer;
LIST_STRUCT(send_queue_list);
struct packetqueue send_queue;
struct collect_neighbor_list neighbor_list;
rimeaddr_t parent, current_parent;
uint16_t rtmetric;
uint8_t seqno;
uint8_t sending, transmissions, max_rexmits;
uint8_t eseqno;
uint8_t is_router;
};
enum {
COLLECT_NO_ROUTER,
COLLECT_ROUTER,
};
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);
void collect_print_stats(void);
#define COLLECT_MAX_DEPTH 255
#endif /* __COLLECT_H__ */
/** @} */
/** @} */