__ipoib_ib_dev_flush
__ipoib_ib_dev_flush(cpriv, level);
__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_LIGHT);
__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_NORMAL);
__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_HEAVY);