ip_mtu_locked
!ip_mtu_locked(dst));
ip_mtu_locked(dst) ||
if (unlikely(ip_mtu_locked(dst))) {
iph->frag_off = ip_mtu_locked(&rt->dst) ? 0 : df;
if (ip_mtu_locked(dst))
iph->frag_off = ip_mtu_locked(&rt->dst) ? 0 : frag_off;