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https://github.com/oliverschmidt/contiki.git
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Made advertisments for new shorter routes quicker, and advertisements for longer routes slower
This commit is contained in:
adamdunkels
parent
0650a014b5
commit
91aa54dc77
@ -1,3 +1,8 @@
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/**
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* \addtogroup rimetree
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* @{
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*/
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/*
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* Copyright (c) 2006, Swedish Institute of Computer Science.
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* All rights reserved.
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@ -28,12 +33,12 @@
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*
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* This file is part of the Contiki operating system.
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*
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* $Id: tree.c,v 1.9 2007/03/25 21:44:06 adamdunkels Exp $
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* $Id: tree.c,v 1.10 2007/03/31 18:33:04 adamdunkels Exp $
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*/
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/**
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* \file
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* A brief description of what this file is.
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* Tree-based hop-by-hop reliable data collection
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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@ -65,9 +70,6 @@ struct hdr {
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u8_t originator_seqno;
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u8_t hopcount;
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u8_t hoplim;
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u8_t retransmissions;
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u8_t datalen;
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u8_t data[1];
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};
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#define SINK 0
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@ -75,8 +77,31 @@ struct hdr {
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#define MAX_HOPLIM 10
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#define MAX_INTERVAL CLOCK_SECOND * 4
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#define MAX_INTERVAL CLOCK_SECOND * 10
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#define MIN_INTERVAL CLOCK_SECOND * 2
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#define MAX_RETRANSMISSIONS 3
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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/*---------------------------------------------------------------------------*/
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static void
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send_adv(struct tree_conn *tc, clock_time_t interval)
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{
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struct adv_msg *hdr;
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rimebuf_clear();
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rimebuf_set_datalen(sizeof(struct adv_msg));
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hdr = rimebuf_dataptr();
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hdr->hopcount = tc->hops_from_sink;
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uibc_send(&tc->uibc_conn, interval);
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}
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/*---------------------------------------------------------------------------*/
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static void
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update_hopcount(struct tree_conn *tc)
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@ -93,6 +118,7 @@ update_hopcount(struct tree_conn *tc)
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} else {
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if(n->hopcount + 1 != tc->hops_from_sink) {
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tc->hops_from_sink = n->hopcount + 1;
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send_adv(tc, MIN_INTERVAL);
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}
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}
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}
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@ -112,18 +138,6 @@ update_hopcount(struct tree_conn *tc)
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}
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/*---------------------------------------------------------------------------*/
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static void
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send_adv(struct tree_conn *tc)
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{
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struct adv_msg *hdr;
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rimebuf_clear();
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rimebuf_set_datalen(sizeof(struct adv_msg));
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hdr = rimebuf_dataptr();
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hdr->hopcount = tc->hops_from_sink;
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uibc_send(&tc->uibc_conn, MAX_INTERVAL);
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}
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/*---------------------------------------------------------------------------*/
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static void
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adv_packet_received(struct uibc_conn *c, rimeaddr_t *from)
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{
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struct tree_conn *tc = (struct tree_conn *)
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@ -131,10 +145,10 @@ adv_packet_received(struct uibc_conn *c, rimeaddr_t *from)
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struct adv_msg *msg = rimebuf_dataptr();
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struct neighbor *n;
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/* printf("%d: neighbor_packet_received from %d with hopcount %d\n",
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node_id, from, hdr->hopcount
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);*/
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/* PRINTF("%d.%d: adv_packet_received from %d.%d with hopcount %d\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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from->u8[0], from->u8[1], msg->hopcount);*/
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n = neighbor_find(from);
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if(n == NULL) {
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@ -152,7 +166,7 @@ adv_packet_sent(struct uibc_conn *c)
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{
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struct tree_conn *tc = (struct tree_conn *)
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((char *)c - offsetof(struct tree_conn, uibc_conn));
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send_adv(tc);
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send_adv(tc, MAX_INTERVAL);
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}
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/*---------------------------------------------------------------------------*/
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static void
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@ -160,7 +174,7 @@ adv_packet_dropped(struct uibc_conn *c)
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{
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struct tree_conn *tc = (struct tree_conn *)
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((char *)c - offsetof(struct tree_conn, uibc_conn));
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send_adv(tc);
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send_adv(tc, MAX_INTERVAL);
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}
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/*---------------------------------------------------------------------------*/
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static int
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@ -174,26 +188,38 @@ node_packet_received(struct ruc_conn *c, rimeaddr_t *from, u8_t seqno)
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if(tc->hops_from_sink == SINK) {
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rimebuf_hdrreduce(sizeof(struct hdr));
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PRINTF("%d.%d: sink received packet from %d.%d via %d.%d with hopcount %d\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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hdr->originator.u8[0], hdr->originator.u8[1],
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from->u8[0], from->u8[1], hdr->hopcount);
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if(tc->cb->recv != NULL) {
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tc->cb->recv(&hdr->originator, hdr->originator_seqno,
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hdr->hopcount, hdr->retransmissions);
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hdr->hopcount);
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}
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return 1;
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} else if(hdr->hoplim > 1 && tc->hops_from_sink != HOPCOUNT_MAX) {
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hdr->hoplim--;
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/* printf("%d: packet received from %d, forwarding %d, best neighbor %p\n",
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rimeaddr_node_addr.u16[0], from->u16[0], tc->forwarding, neighbor_best());*/
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PRINTF("%d.%d: packet received from %d.%d via %d.%d with hopcount %d, best neighbor %p, forwarding %d\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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hdr->originator.u8[0], hdr->originator.u8[1],
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from->u8[0], from->u8[1], hdr->hopcount,
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neighbor_best(), tc->forwarding);
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if(!tc->forwarding) {
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tc->forwarding = 1;
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n = neighbor_best();
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if(n != NULL) {
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ruc_send(c, &n->addr);
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ruc_send(c, &n->addr, MAX_RETRANSMISSIONS);
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}
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return 1;
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} else {
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/* printf("%d: still forwarding another packet, not sending ACK\n",
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rimeaddr_node_addr.u16[0]);*/
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PRINTF("%d.%d: still forwarding another packet, not sending ACK\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1]);
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return 0;
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}
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}
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@ -225,7 +251,7 @@ tree_open(struct tree_conn *tc, u16_t channels,
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rimebuf_reference(&tc.hello, sizeof(tc.hello));
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sibc_send_stubborn(&sibc_conn, CLOCK_SECOND * 8);*/
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tc->cb = cb;
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send_adv(tc);
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send_adv(tc, MAX_INTERVAL);
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}
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/*---------------------------------------------------------------------------*/
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void
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@ -240,6 +266,7 @@ tree_set_sink(struct tree_conn *tc, int should_be_sink)
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{
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if(should_be_sink) {
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tc->hops_from_sink = SINK;
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send_adv(tc, MIN_INTERVAL);
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} else {
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tc->hops_from_sink = HOPCOUNT_MAX;
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}
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@ -258,12 +285,10 @@ tree_send(struct tree_conn *tc)
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rimeaddr_copy(&hdr->originator, &rimeaddr_node_addr);
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hdr->hopcount = tc->hops_from_sink;
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hdr->hoplim = MAX_HOPLIM;
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hdr->retransmissions = 0;
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hdr->datalen = 0;
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n = neighbor_best();
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if(n != NULL) {
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/* printf("Sending to best neighbor\n");*/
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ruc_send(&tc->ruc_conn, &n->addr);
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ruc_send(&tc->ruc_conn, &n->addr, MAX_RETRANSMISSIONS);
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} else {
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/* printf("Didn't find any neighbor\n");*/
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}
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@ -276,3 +301,4 @@ tree_depth(struct tree_conn *tc)
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return tc->hops_from_sink;
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}
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/*---------------------------------------------------------------------------*/
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/** @} */
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