IPOIB_FLAG_CSUM
return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
if (test_bit(IPOIB_FLAG_CSUM, &priv->flags) && likely(wc->wc_flags & IB_WC_IP_CSUM_OK))
set_bit(IPOIB_FLAG_CSUM, &priv->flags);