RXH_DISCARD
(RXH_L2DA | RXH_DISCARD)
!(RXH_DISCARD & flow_hash) ?
nfc->data = RXH_DISCARD;
if (nfc->data & RXH_DISCARD) {
bool is_disable = info->data & RXH_DISCARD;
RXH_GTP_TEID | RXH_DISCARD)