netdev - Re: [PATCH iproute2] ip: support of usec rtt in tcp

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Date:	Fri, 5 Sep 2014 17:02:22 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH iproute2] ip: support of usec rtt in tcp_metrics

On Fri, 05 Sep 2014 16:54:04 -0700
Eric Dumazet <eric.dumazet@...il.com> wrote:

> +			if (i != TCP_METRIC_RTT &&
> +			    i != TCP_METRIC_RTT_US &&
> +			    i != TCP_METRIC_RTTVAR &&
> +			    i != TCP_METRIC_RTTVAR_US) {
> +				if (metric_name[i])
> +					fprintf(fp, " %s ", metric_name[i]);
> +				else
> +					fprintf(fp, " metric_%d ", i);

Why not put new metrics in metric_name array? and make the check something like:

			if (i < ARRAY_SIZE(metric_name) && metric_name[i])
				fprintf(fp, " %s ", metric_name[i]);
			else
				fprintf(fp, " metric_%d ", i)

This makes it future proof, and gets rid of the silly test.
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