From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <mhall@mhcomputing.net>
Received: from mail.mhcomputing.net (master.mhcomputing.net [74.208.46.186])
 by dpdk.org (Postfix) with ESMTP id 8646D58F5
 for <dev@dpdk.org>; Mon, 27 Oct 2014 21:13:27 +0100 (CET)
Received: by mail.mhcomputing.net (Postfix, from userid 1000)
 id 799BE80C50B; Mon, 27 Oct 2014 13:21:08 -0700 (PDT)
Date: Mon, 27 Oct 2014 13:21:08 -0700
From: Matthew Hall <mhall@mhcomputing.net>
To: Thomas Monjalon <thomas.monjalon@6wind.com>
Message-ID: <20141027202108.GA13632@mhcomputing.net>
References: <1411634427-746-1-git-send-email-helin.zhang@intel.com>
 <1413978810-24610-1-git-send-email-helin.zhang@intel.com>
 <1413978810-24610-4-git-send-email-helin.zhang@intel.com>
 <3244726.9ZMZU6PFm1@xps13>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <3244726.9ZMZU6PFm1@xps13>
User-Agent: Mutt/1.5.23 (2014-03-12)
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v3 3/8] i40e: support of setting hash lookup
 table size
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Mon, 27 Oct 2014 20:13:28 -0000

On Mon, Oct 27, 2014 at 03:13:39PM +0100, Thomas Monjalon wrote:
> You didn't answer to my previous comment on this.
> I think these definitions are useless. 64 is 64.

Putting labels on the constants gives meaning to them as well as a numeric 
value. Not doing so is an antipattern referred to as "magic numbers" 
antipattern.

A maintainence programmer or community member will have a difficult time 
figuring out lost context when grepping through the code.

Matthew.