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Rewrote the code to use polite broadcasts istead of regular broadcasts. This reduces the amount of broadcast traffic, particularly for dense networks.

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This commit is contained in:
adamdunkels 2008-01-14 09:34:00 +00:00
parent bd125aaac6
commit 7b94bfb621
2 changed files with 28 additions and 14 deletions
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36
core/net/rime/neighbor-discovery.c
View file

@ -33,7 +33,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: neighbor-discovery.c,v 1.2 2008/01/08 08:27:25 adamdunkels Exp $
* $Id: neighbor-discovery.c,v 1.3 2008/01/14 09:34:00 adamdunkels Exp $
*/
/**
@ -71,7 +71,7 @@ struct adv_msg {
#define MAX_HOPLIM 10
#define MAX_INTERVAL CLOCK_SECOND * 20
#define MAX_INTERVAL CLOCK_SECOND * 30
#define MIN_INTERVAL CLOCK_SECOND * 10
#define NEW_VAL_INTERVAL CLOCK_SECOND * 2
@ -93,7 +93,8 @@ send_adv(struct neighbor_discovery_conn *c, clock_time_t interval)
rimebuf_set_datalen(sizeof(struct adv_msg));
hdr = rimebuf_dataptr();
hdr->val = c->val;
ibc_send(&c->c);
/* ibc_send(&c->c);*/
ipolite_send(&c->c, interval, sizeof(struct adv_msg));
if(c->u->sent) {
c->u->sent(c);
}
@ -103,7 +104,8 @@ send_adv(struct neighbor_discovery_conn *c, clock_time_t interval)
}
/*---------------------------------------------------------------------------*/
static void
adv_packet_received(struct ibc_conn *ibc, rimeaddr_t *from)
/*adv_packet_received(struct ibc_conn *ibc, rimeaddr_t *from)*/
adv_packet_received(struct ipolite_conn *ibc, rimeaddr_t *from)
{
struct neighbor_discovery_conn *c = (struct neighbor_discovery_conn *)ibc;
struct adv_msg *msg = rimebuf_dataptr();
@ -123,39 +125,49 @@ send_timer(void *ptr)
{
struct neighbor_discovery_conn *tc = ptr;
send_adv(tc, MAX_INTERVAL / 2);
ctimer_set(&tc->t,
send_adv(tc, MAX_INTERVAL);
/* ctimer_set(&tc->t,
MIN_INTERVAL + random_rand() % (MAX_INTERVAL - MIN_INTERVAL),
send_timer, tc);*/
ctimer_set(&tc->t,
MAX_INTERVAL,
send_timer, tc);
}
/*---------------------------------------------------------------------------*/
static const struct ibc_callbacks ibc_callbacks =
/*static const struct ibc_callbacks ibc_callbacks =
{adv_packet_received};*/
static const struct ipolite_callbacks ipolite_callbacks =
{adv_packet_received};
/*---------------------------------------------------------------------------*/
void
neighbor_discovery_open(struct neighbor_discovery_conn *c, uint16_t channel,
const struct neighbor_discovery_callbacks *cb)
{
ibc_open(&c->c, channel, &ibc_callbacks);
/* ibc_open(&c->c, channel, &ibc_callbacks);*/
ipolite_open(&c->c, channel, &ipolite_callbacks);
c->u = cb;
}
/*---------------------------------------------------------------------------*/
void
neighbor_discovery_close(struct neighbor_discovery_conn *c)
{
ibc_close(&c->c);
/* ibc_close(&c->c);*/
ctimer_stop(&c->t);
ipolite_close(&c->c);
}
/*---------------------------------------------------------------------------*/
void
neighbor_discovery_start(struct neighbor_discovery_conn *c, uint16_t val)
{
if(val < c->val) {
ctimer_set(&c->t, random_rand() % NEW_VAL_INTERVAL, send_timer, c);
c->val = val;
send_adv(c, NEW_VAL_INTERVAL);
ctimer_set(&c->t, NEW_VAL_INTERVAL, send_timer, c);
} else {
ctimer_set(&c->t, random_rand() % MIN_INTERVAL, send_timer, c);
c->val = val;
send_adv(c, MIN_INTERVAL);
ctimer_set(&c->t, MIN_INTERVAL, send_timer, c);
}
c->val = val;
}
/*---------------------------------------------------------------------------*/
/** @} */

6
core/net/rime/neighbor-discovery.h
View file

@ -47,7 +47,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: neighbor-discovery.h,v 1.2 2007/12/16 14:33:32 adamdunkels Exp $
* $Id: neighbor-discovery.h,v 1.3 2008/01/14 09:34:00 adamdunkels Exp $
*/
/**
@ -61,6 +61,7 @@
#define __NEIGHBOR_DISCOVERY_H__
#include "net/rime/ibc.h"
#include "net/rime/ipolite.h"
struct neighbor_discovery_conn;
@ -70,7 +71,8 @@ struct neighbor_discovery_callbacks {
};
struct neighbor_discovery_conn {
struct ibc_conn c;
/* struct ibc_conn c;*/
struct ipolite_conn c;
const struct neighbor_discovery_callbacks *u;
struct ctimer t;
uint16_t val;