EM_MAX_SCATTER
scctx->isc_tx_nsegments = EM_MAX_SCATTER;
scctx->isc_tx_tso_segments_max = EM_MAX_SCATTER;
scctx->isc_tx_tso_segments_max = EM_MAX_SCATTER;
scctx->isc_tx_tso_segments_max = EM_MAX_SCATTER;