taglinefilesource code
RT_CACHE_TIMEOUT1059net/ipv4/route.cif (!rth->rt_refcnt && rth->rt_lastuse + RT_CACHE_TIMEOUT < now)
RT_CACHE_TIMEOUT1177net/ipv4/route.cunsigned expire = RT_CACHE_TIMEOUT>>1;
RT_CACHE_TIMEOUT1436net/ipv4/route.cif ((!rth->rt_refcnt && rth->rt_lastuse + RT_CACHE_TIMEOUT < now)