DEFINE_FIELD (OF_ARP_OP, FWW_NW_PROTO, ETH_TYPE_ARP, 0, false)
DEFINE_FIELD_M(OF_ARP_SPA, 0, ETH_TYPE_ARP, 0, false)
DEFINE_FIELD_M(OF_ARP_TPA, 0, ETH_TYPE_ARP, 0, false)
DEFINE_FIELD (OF_ARP_OP, FWW_NW_PROTO, ETH_TYPE_ARP, 0, false)
DEFINE_FIELD_M(OF_ARP_SPA, 0, ETH_TYPE_ARP, 0, false)
DEFINE_FIELD_M(OF_ARP_TPA, 0, ETH_TYPE_ARP, 0, false)