NEIGH_CB
long tdif = NEIGH_CB(skb)->sched_next - now;
NEIGH_CB(skb)->sched_next = sched_next;
NEIGH_CB(skb)->flags |= LOCALLY_ENQUEUED;
if (NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED ||
memset(NEIGH_CB(skb), 0, sizeof(struct neighbour_cb));
memset(NEIGH_CB(skb), 0, sizeof(struct neighbour_cb));
if (!(NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED) &&