netdev - Re: [PATCH net-next V1 1/3] net: Add max rate tx queue attribute

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Date:	Sun, 15 Mar 2015 01:07:27 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ogerlitz@...lanox.com
Cc:	john.r.fastabend@...el.com, netdev@...r.kernel.org,
	amirv@...lanox.com, idos@...lanox.com, matanb@...lanox.com
Subject: Re: [PATCH net-next V1 1/3] net: Add max rate tx queue attribute

From: Or Gerlitz <ogerlitz@...lanox.com>
Date: Thu, 12 Mar 2015 10:53:23 +0200

> +	if (dev->netdev_ops->ndo_set_tx_maxrate) {
> +		err = dev->netdev_ops->ndo_set_tx_maxrate(dev, index, rate);
> +	} else {
> +		rtnl_unlock();
> +		return -EOPNOTSUPP;
> +	}
> +
> +	rtnl_unlock();
> +	if (!err) {
> +		queue->tx_maxrate = rate;
> +		return len;
> +	}

This is more succinctly expressed as:

	err = -EOPNOTSUPP;
	if (dev->netdev_ops->ndo_set_tx_maxrate) {
		err = dev->netdev_ops->ndo_set_tx_maxrate(dev, index, rate);
	if (!err) {
		queue->tx_maxrate = rate;
		return len;
	}
	return err;

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