AX_FC_TX
pause->tx_pause = !!(ax_local->flowctrl & AX_FC_TX);
fc = pause->tx_pause ? AX_FC_TX : 0;
maccr |= (ax_local->flowctrl & AX_FC_TX) ? MACCR_TXFC_ENABLE : 0;
maccr |= (ax_local->flowctrl & AX_FC_TX) ? MACCR_TXFC_ENABLE : 0;
ax_local->phydev->advertising)) ? AX_FC_TX : 0;