linux-kernel - Re: [PATCH v7 3/3] vdpa/mlx5: Add the support of set mac address

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Message-ID: <aa0ffd28-bfb8-4b25-8730-a522861bca98@lunn.ch>
Date: Mon, 29 Jul 2024 21:16:47 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Cindy Lu <lulu@...hat.com>
Cc: dtatulea@...dia.com, mst@...hat.com, jasowang@...hat.com,
	parav@...dia.com, sgarzare@...hat.com, netdev@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 3/3] vdpa/mlx5: Add the support of set mac address

> +static int mlx5_vdpa_set_attr(struct vdpa_mgmt_dev *v_mdev, struct vdpa_device *dev,
> +			      const struct vdpa_dev_set_config *add_config)
> +{
> +	struct virtio_net_config *config;
> +	struct mlx5_core_dev *pfmdev;
> +	struct mlx5_vdpa_dev *mvdev;
> +	struct mlx5_vdpa_net *ndev;
> +	struct mlx5_core_dev *mdev;
> +	int err = -EINVAL;

I would say this should also be EOPNOTSUPP.

> +
> +	mvdev = to_mvdev(dev);
> +	ndev = to_mlx5_vdpa_ndev(mvdev);
> +	mdev = mvdev->mdev;
> +	config = &ndev->config;
> +
> +	down_write(&ndev->reslock);
> +	if (add_config->mask & (1 << VDPA_ATTR_DEV_NET_CFG_MACADDR)) {
> +		pfmdev = pci_get_drvdata(pci_physfn(mdev->pdev));
> +		err = mlx5_mpfs_add_mac(pfmdev, config->mac);
> +		if (!err)
> +			ether_addr_copy(config->mac, add_config->net.mac);
> +	}
> +
> +	up_write(&ndev->reslock);
> +	return err;


    Andrew

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