From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas@monjalon.net>
Subject: Re: [PATCH v2] ethdev: add fuzzy match pattern
Date: Thu, 08 Jun 2017 09:19:24 +0200
Message-ID: <2304112.MuvLPJetXV@xps>
References: <1495582134-13665-1-git-send-email-qi.z.zhang@intel.com>
 <1496874080-35086-1-git-send-email-qi.z.zhang@intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7Bit
Cc: dev@dpdk.org, adrien.mazarguil@6wind.com
To: Qi Zhang <qi.z.zhang@intel.com>
Return-path: <dev-bounces@dpdk.org>
Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com
 [66.111.4.25]) by dpdk.org (Postfix) with ESMTP id 85E022BB8
 for <dev@dpdk.org>; Thu,  8 Jun 2017 09:19:27 +0200 (CEST)
In-Reply-To: <1496874080-35086-1-git-send-email-qi.z.zhang@intel.com>
List-Id: DPDK patches and discussions <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>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

Hi,

08/06/2017 00:21, Qi Zhang:
> Add new meta pattern item RTE_FLOW_TYPE_ITEM_FUZZY.

I disagree about fuzzy wording, because fuzzy is something different
I think.

> This is for device that support fuzzy  match option.
> Usually a fuzzy match is fast but the cost is accuracy.
> i.e. Signature Match only match pattern's hash value, but it is
> possible two different patterns have the same hash value.

You have described it yourself here: it matches a hash of the signature.
Why not using "hash" as wording?

> Matching accuracy level can be configure by subfield threshold.
> Driver can divide the range of threshold and map to different
> accuracy levels that device support.
> 
> Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>