net: enetc: act upon mqprio queue config in taprio offload

We assume that the mqprio queue configuration from taprio has a simple
1:1 mapping between prio and traffic class, and one TX queue per TC.
That might not be the case. Actually parse and act upon the mqprio
config.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/enetc/enetc_qos.c

@@ -136,29 +136,21 @@ int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data)
 {
 	struct tc_taprio_qopt_offload *taprio = type_data;
 	struct enetc_ndev_priv *priv = netdev_priv(ndev);
-	struct enetc_hw *hw = &priv->si->hw;
-	struct enetc_bdr *tx_ring;
-	int err;
-	int i;
+	int err, i;
 
 	/* TSD and Qbv are mutually exclusive in hardware */
 	for (i = 0; i < priv->num_tx_rings; i++)
 		if (priv->tx_ring[i]->tsd_enable)
 			return -EBUSY;
 
-	for (i = 0; i < priv->num_tx_rings; i++) {
-		tx_ring = priv->tx_ring[i];
-		tx_ring->prio = taprio->enable ? i : 0;
-		enetc_set_bdr_prio(hw, tx_ring->index, tx_ring->prio);
-	}
+	err = enetc_setup_tc_mqprio(ndev, &taprio->mqprio);
+	if (err)
+		return err;
 
 	err = enetc_setup_taprio(ndev, taprio);
 	if (err) {
-		for (i = 0; i < priv->num_tx_rings; i++) {
-			tx_ring = priv->tx_ring[i];
-			tx_ring->prio = taprio->enable ? 0 : i;
-			enetc_set_bdr_prio(hw, tx_ring->index, tx_ring->prio);
-		}
+		taprio->mqprio.qopt.num_tc = 0;
+		enetc_setup_tc_mqprio(ndev, &taprio->mqprio);
 	}
 
 	return err;