nxge_tx_mac_enable
if ((status = nxge_tx_mac_enable(nxgep)) != NXGE_OK)
(void) nxge_tx_mac_enable(nxgep);
(void) nxge_tx_mac_enable(nxgep);
(void) nxge_tx_mac_enable(nxgep);
nxge_status_t nxge_tx_mac_enable(p_nxge_t);