RTF_PCPU
pcpu_rt->rt6i_flags |= RTF_PCPU;
rt->rt6i_flags = ort->rt6i_flags & ~RTF_PCPU;
if (from && (rt->rt6i_flags & RTF_PCPU ||
(rt->rt6i_flags & RTF_PCPU || rcu_access_pointer(rt->from));
if (cfg->fc_flags & RTF_PCPU) {