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RPL: trigger a local repair only the first time no parent is found in a DODAG

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This commit is contained in:
Simon Duquennoy 2016-02-04 22:45:25 +01:00
parent b176991a06
commit 65b854fcee
1 changed files with 7 additions and 4 deletions
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5
core/net/rpl/rpl-dag.c
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@ -1290,6 +1290,7 @@ int
rpl_process_parent_event(rpl_instance_t *instance, rpl_parent_t *p)
{
int return_value;
rpl_parent_t *last_parent = instance->current_dag->preferred_parent;
#if DEBUG
rpl_rank_t old_rank;
@ -1312,11 +1313,13 @@ rpl_process_parent_event(rpl_instance_t *instance, rpl_parent_t *p)
}
if(rpl_select_dag(instance, p) == NULL) {
/* No suitable parent; trigger a local repair. */
if(last_parent != NULL) {
/* No suitable parent anymore; trigger a local repair. */
PRINTF("RPL: No parents found in any DAG\n");
rpl_local_repair(instance);
return 0;
}
}
#if DEBUG
if(DAG_RANK(old_rank, instance) != DAG_RANK(instance->current_dag->rank, instance)) {