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avoid sending DAO when address is tentative

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This commit is contained in:
joxe 2010-05-09 19:12:47 +00:00
parent 50cca91d93
commit 6f66d36d67
1 changed files with 10 additions and 1 deletions
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11
core/net/rpl/rpl-timers.c
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@ -32,7 +32,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: rpl-timers.c,v 1.3 2010/05/09 17:52:37 joxe Exp $
* $Id: rpl-timers.c,v 1.4 2010/05/09 19:12:47 joxe Exp $
*/
/**
* \file
@ -182,12 +182,21 @@ handle_dao_timer(void *ptr)
rpl_dag_t *dag;
rpl_neighbor_t *n;
dag = (rpl_dag_t *)ptr;
if (!dio_send_ok && uip_ds6_get_link_local(ADDR_PREFERRED) == NULL) {
PRINTF("RPL: postpone DAO transmission... \n");
ctimer_set(&dag->dao_timer, CLOCK_SECOND, handle_dao_timer, dag);
return;
}
/* Send the DAO to the best parent. rpl-07 section C.2 lists the
fan-out as being under investigation. */
n = rpl_find_best_parent(dag);
if(n != NULL) {
PRINTF("RPL: handle_dao_timer - sending DAO\n");
dao_output(n, DEFAULT_ROUTE_LIFETIME);
} else {
PRINTF("RPL: could not find any best parent.. \n");
}
ctimer_stop(&dag->dao_timer);
}