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* decline route discovery requests if we have one in the air

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* and, by popular demand, switched PRINTF to printf in the debug macro. :-)
This commit is contained in:
nvt-se 2009-10-08 16:30:26 +00:00
parent 92eecd3e38
commit 31f41d842e
2 changed files with 17 additions and 6 deletions
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17
core/net/rime/route-discovery.c
View file

@ -33,7 +33,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: route-discovery.c,v 1.17 2009/05/10 21:10:23 adamdunkels Exp $
* $Id: route-discovery.c,v 1.18 2009/10/08 16:30:26 nvt-se Exp $
*/
/**
@ -72,11 +72,13 @@ struct rrep_hdr {
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) PRINTF(__VA_ARGS__)
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
/*---------------------------------------------------------------------------*/
static char rrep_pending; /* A reply for a request is pending. */
/*---------------------------------------------------------------------------*/
static void
send_rreq(struct route_discovery_conn *c, const rimeaddr_t *dest)
@ -182,6 +184,7 @@ rrep_packet_received(struct unicast_conn *uc, rimeaddr_t *from)
if(rimeaddr_cmp(&msg->dest, &rimeaddr_node_addr)) {
PRINTF("rrep for us!\n");
rrep_pending = 0;
ctimer_stop(&c->t);
if(c->cb->new_route) {
c->cb->new_route(c, &msg->originator);
@ -285,18 +288,26 @@ timeout_handler(void *ptr)
{
struct route_discovery_conn *c = ptr;
PRINTF("route_discovery: timeout, timed out\n");
rrep_pending = 0;
if(c->cb->timedout) {
c->cb->timedout(c);
}
}
/*---------------------------------------------------------------------------*/
void
int
route_discovery_discover(struct route_discovery_conn *c, const rimeaddr_t *addr,
clock_time_t timeout)
{
if(rrep_pending) {
PRINTF("route_discovery_send: ignoring request because of pending response\n");
return 0;
}
PRINTF("route_discovery_send: sending route request\n");
ctimer_set(&c->t, timeout, timeout_handler, c);
rrep_pending = 1;
send_rreq(c, addr);
return 1;
}
/*---------------------------------------------------------------------------*/
/** @} */

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

@ -45,7 +45,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: route-discovery.h,v 1.8 2009/03/24 07:15:04 adamdunkels Exp $
* $Id: route-discovery.h,v 1.9 2009/10/08 16:30:26 nvt-se Exp $
*/
/**
@ -83,8 +83,8 @@ struct route_discovery_conn {
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_discover(struct route_discovery_conn *c, const rimeaddr_t *dest,
clock_time_t timeout);
int route_discovery_discover(struct route_discovery_conn *c, const rimeaddr_t *dest,
clock_time_t timeout);
void route_discovery_close(struct route_discovery_conn *c);