NF_DN_PRE_ROUTING 525 net/decnet/dn_route.c return NF_HOOK(PF_DECnet, NF_DN_PRE_ROUTING, skb, skb->dev, NULL, dn_route_rx_packet); NF_DN_PRE_ROUTING 551 net/decnet/dn_route.c return NF_HOOK(PF_DECnet, NF_DN_PRE_ROUTING, skb, skb->dev, NULL, dn_route_rx_packet);