Hi Gabriel,
I send you some explanations about "local repair" from rfc 3561.
localrepairtimer function that is called from rt_ll_failed function is
for local repair as explained below.
/*_________________________________________*/
6.12. Local Repair
When a link break in an active route occurs, the node upstream of that
break MAY choose to repair the link locally if the destination was no
farther than MAX_REPAIR_TTL hops away. To repair the link break, the
node increments the sequence number for the destination and then
broadcasts a RREQ for that destination. .....
/*_________________________________________*/
from rt_ll_failed function
/* if the broken link is closer to the dest than source, attempt a local
repair. Otherwise, bring down the route. */
if (ch->num_forwards() > rt->rt_hops) {
local_rt_repair(rt, p); // local repair
return;
}
else
{
drop(p, DROP_RTR_MAC_CALLBACK);
while((p = ifqueue->filter(broken_nbr))) {
drop(p, DROP_RTR_MAC_CALLBACK);
}
// below function sends error message to the neighbors
nb_delete(broken_nbr);
}
As you see above, if "local repair" is processed, local_rt_repair
function is called. And this function implements 6.12 section of the
rfc. Else all the packets waiting in the queue are dropped, and
senderror function is called from nb_delete function as Cenker says
before in the list.
Best Regards.
Guzin Ulutas (CEng)
