> +static int vdpa_dev_net_device_attr_set(struct vdpa_device *vdev,
> + struct genl_info *info)
> +{
> + struct vdpa_dev_set_config set_config = {};
> + struct vdpa_mgmt_dev *mdev = vdev->mdev;
> + struct nlattr **nl_attrs = info->attrs;
> + const u8 *macaddr;
> + int err = -EINVAL;
> +
> + down_write(&vdev->cf_lock);
> + if (nl_attrs[VDPA_ATTR_DEV_NET_CFG_MACADDR]) {
> + set_config.mask |= BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MACADDR);
> + macaddr = nla_data(nl_attrs[VDPA_ATTR_DEV_NET_CFG_MACADDR]);
> +
> + if (is_valid_ether_addr(macaddr)) {
> + ether_addr_copy(set_config.net.mac, macaddr);
> + memcpy(set_config.net.mac, macaddr, ETH_ALEN);
ether_addr_copy() and memcpy()?
> + if (mdev->ops->dev_set_attr) {
> + err = mdev->ops->dev_set_attr(mdev, vdev,
> + &set_config);
> + } else {
> + NL_SET_ERR_MSG_FMT_MOD(info->extack,
> + "device does not support changing the MAC address");
You would generally return EOPNOTSUPP in this case, not EINVAL.
Also, the device does not support setting attributes. Given the
generic name, i assume you plan to set other attributes in the future,
at which point this error message will be wrong.
Andrew
