xfer.tx_buf = (unsigned long)bufWrite;
xfer.rx_buf = (unsigned long)bufRead;
xfer.len = 3;
xfer.speed_hz=20e6;
xfer.cs_change = 1
if(ioctl(fh_KSZ8795, SPI_IOC_MESSAGE(1), &xfer)<0)
{
  dbPrintf("S: %s\n",strerror(errno));
}