dwxgmac2_filter_read
ret = dwxgmac2_filter_read(hw, filter_no, XGMAC_L3L4_CTRL, &value);
ret = dwxgmac2_filter_read(hw, filter_no, XGMAC_L3L4_CTRL, &value);
ret = dwxgmac2_filter_read(hw, filter_no, XGMAC_L4_ADDR, &value);