cxgb4_dbfifo_count
if (cxgb4_dbfifo_count(ctx->dev->rdev.lldi.ports[0], 1)
while (cxgb4_dbfifo_count(qp->rhp->rdev.lldi.ports[0], 1) > 0) {
EXPORT_SYMBOL(cxgb4_dbfifo_count);
unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo);