Re: [PATCH net-next v2] hinic: add set_channels ethtool_ops support

On 2020/5/30 1:44, Jakub Kicinski wrote:

On Thu, 28 May 2020 18:36:33 +0000 Luo bin wrote:

quoted

add support to change TX/RX queue number with ethtool -L

Signed-off-by: Luo bin <redacted>

Luo bin, your patches continue to come with Date: header being in the
past. Also suspiciously no time zone offset. Can you address this?

quoted

+static int hinic_set_channels(struct net_device *netdev,
+			      struct ethtool_channels *channels)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	unsigned int count = channels->combined_count;
+	int err;
+
+	if (!count) {
+		netif_err(nic_dev, drv, netdev,
+			  "Unsupported combined_count: 0\n");
+		return -EINVAL;
+	}

This check has been added to the core since the last version of you
patch:

	/* ensure there is at least one RX and one TX channel */
	if (!channels.combined_count &&
	    (!channels.rx_count || !channels.tx_count))
		return -EINVAL;

quoted

+	netif_info(nic_dev, drv, netdev, "Set max combined queue number from %d to %d\n",
+		   hinic_hwdev_num_qps(nic_dev->hwdev), count);
+
+	if (netif_running(netdev)) {
+		netif_info(nic_dev, drv, netdev, "Restarting netdev\n");
+		hinic_close(netdev);
+
+		nic_dev->hwdev->nic_cap.num_qps = count;
+
+		err = hinic_open(netdev);
+		if (err) {
+			netif_err(nic_dev, drv, netdev,
+				  "Failed to open netdev\n");
+			return -EFAULT;
+		}
+	} else {
+		nic_dev->hwdev->nic_cap.num_qps = count;
+	}
+
+	return 0;
  }

Will fix. Thanks.
.