NGE_CMDSTS_MORE
if (cur_tx->nge_ctl & NGE_CMDSTS_MORE) {
f->nge_ctl = NGE_CMDSTS_MORE | m->m_len;
sc->nge_ldata->nge_tx_list[cur].nge_ctl &= ~NGE_CMDSTS_MORE;
#define NGE_LASTDESC(x) (!((x)->nge_ctl & NGE_CMDSTS_MORE)))