NFP_NET_CFG_STATS_TX_DISCARDS
stats->tx_dropped += nn_readq(nn, NFP_NET_CFG_STATS_TX_DISCARDS);
{ "dev_tx_discards", NFP_NET_CFG_STATS_TX_DISCARDS },
stats->rx_dropped = readq(port->vnic + NFP_NET_CFG_STATS_TX_DISCARDS);