From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zoltan Kiss Subject: Re: [PATCH] mbuf: make rearm_data address naturally aligned Date: Fri, 20 May 2016 16:30:33 +0100 Message-ID: <573F2D99.9080802@linaro.org> References: <1463579863-32053-1-git-send-email-jerin.jacob@caviumnetworks.com> <20160518164300.GA12324@bricha3-MOBL3> <20160518185011.GA4432@localhost.localdomain> <20160519085047.GA17500@bricha3-MOBL3> <2601191342CEEE43887BDE71AB97725836B5AB67@irsmsx105.ger.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Cc: "dev@dpdk.org" , "thomas.monjalon@6wind.com" , "viktorin@rehivetech.com" , "jianbo.liu@linaro.org" To: "Ananyev, Konstantin" , "Richardson, Bruce" , Jerin Jacob Return-path: Received: from mail-wm0-f52.google.com (mail-wm0-f52.google.com [74.125.82.52]) by dpdk.org (Postfix) with ESMTP id 46192B433 for ; Fri, 20 May 2016 17:30:33 +0200 (CEST) Received: by mail-wm0-f52.google.com with SMTP id a17so178343702wme.0 for ; Fri, 20 May 2016 08:30:33 -0700 (PDT) In-Reply-To: <2601191342CEEE43887BDE71AB97725836B5AB67@irsmsx105.ger.corp.intel.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Hi, On 19/05/16 13:18, Ananyev, Konstantin wrote: > I wonder does anyone really use mbuf port field? > My though was - could we to drop it completely? There are a few example codes which are reading the port field. Although they can retain this metadata in the private area of the mbuf, right after receiving, it would cause them a minor perf drop to do it separately. I'm not sure which one is more important: this perf drop of the gain everyone else has by relieving the drivers to do it. Zoli