RXMCS_FLOWCTRL
ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
jme->reg_rxmcs |= RXMCS_FLOWCTRL;
jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
RXMCS_FLOWCTRL |