Re: [RFC PATCH net-next 9/9] ethtool: Add ability to flash transceiver modules' firmware

[Simon Horman]

On Mon, Jan 22, 2024 at 10:45:30AM +0200, Danielle Ratson wrote:

..

> +static int module_flash_fw(struct net_device *dev, struct nlattr **tb,
> +			   struct netlink_ext_ack *extack)
> +{
> +	struct ethtool_module_fw_flash_params params = {};
> +	struct nlattr *attr;
> +
> +	if (!tb[ETHTOOL_A_MODULE_FW_FLASH_FILE_NAME]) {
> +		NL_SET_ERR_MSG_ATTR(extack,
> +				    tb[ETHTOOL_A_MODULE_FW_FLASH_FILE_NAME],
> +				    "File name attribute is missing");
> +		return -EINVAL;
> +	}
> +
> +	params.file_name =
> +		nla_data(tb[ETHTOOL_A_MODULE_FW_FLASH_FILE_NAME]);
> +
> +	attr = tb[ETHTOOL_A_MODULE_FW_FLASH_PASSWORD];
> +	if (attr) {
> +		params.password = cpu_to_be32(nla_get_u32(attr));

Hi Danielle,

The type of password is u32, so perhaps cpu_to_be32() isn't needed here?

Flagged by Sparse.

> +		params.password_valid = true;
> +	}
> +
> +	return module_flash_fw_schedule(dev, &params, extack);
> +}

..