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Bugfix: select the best parent if current parent is NULL

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This commit is contained in:
adamdunkels 2010-06-14 06:54:47 +00:00
parent 8d1680fed5
commit 2647f879c2
1 changed files with 4 additions and 3 deletions
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7
core/net/rime/collect.c
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@ -33,7 +33,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: collect.c,v 1.47 2010/04/30 07:33:51 adamdunkels Exp $
* $Id: collect.c,v 1.48 2010/06/14 06:54:47 adamdunkels Exp $
*/
/**
@ -138,8 +138,6 @@ update_rtmetric(struct collect_conn *tc)
/* Pick the neighbor to use as a parent. We normally use
the parent in the n->parent. */
n = collect_neighbor_find(&tc->parent);
/* Find the neighbor with the lowest rtmetric. */
best = collect_neighbor_best();
/* If we do not have a parent in n->parent, we use the best
neighbor that we have as a new parent. Also, if the best
@ -157,6 +155,8 @@ update_rtmetric(struct collect_conn *tc)
PRINTF("#L %d 0\n", tc->parent.u8[0]);
PRINTF("#L %d 1\n", best->addr.u8[0]);
rimeaddr_copy(&tc->parent, &best->addr);
n = best;
}
/* If n is NULL, we have no best neighbor. */
@ -613,6 +613,7 @@ node_packet_sent(struct unicast_conn *c, int status, int transmissions)
// PRINTF("Updating ETX with %d transmissions (punished %d)\n", tc->transmissions,
// tx);
collect_neighbor_update_etx(collect_neighbor_find(&tc->parent), tx);
update_rtmetric(tc);
}
}