From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <dev-bounces@dpdk.org> Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id CABBCA00C2; Thu, 10 Feb 2022 12:36:54 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 9934840140; Thu, 10 Feb 2022 12:36:54 +0100 (CET) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by mails.dpdk.org (Postfix) with ESMTP id 6EF744013F for <dev@dpdk.org>; Thu, 10 Feb 2022 12:36:53 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1644493013; x=1676029013; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=Wkz3OTqp5vI++F0ie73XGtIjupZcE6rBPIDObof4CN0=; b=QuQw9kY47TKpx2+6/6UgQomls9jyd7eBhw+9pqsEDzeXeTRHnp817+oD PyPi8I0l+eTMN7836jB7b94Adg106su+GDEoIFYW56DArbquwXazAxLOH GTPJ8GbHd1hBHlJmu17yaskcpb97u3rLTBXjYfcppZQWo6Dd+p+CswkDm +93WpPgXOTTwEfze5osgzitTQJ4vP6je0jBWulp2pDHKDsniHrl4tEZMu OgAdEAUSKEwocXROZ3G6GshJbVhxzt/SFzFtn2osYc9cAnPDpMIyaeswU NrS+3BXM7JhV9IeucS3IqW+C569FZDJ05mvJVN1q7k1rtpWIbNN8hCE2G w==; X-IronPort-AV: E=McAfee;i="6200,9189,10253"; a="229438441" X-IronPort-AV: E=Sophos;i="5.88,358,1635231600"; d="scan'208";a="229438441" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Feb 2022 03:36:52 -0800 X-IronPort-AV: E=Sophos;i="5.88,358,1635231600"; d="scan'208";a="485652901" Received: from bricha3-mobl.ger.corp.intel.com ([10.252.11.92]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-SHA; 10 Feb 2022 03:36:50 -0800 Date: Thu, 10 Feb 2022 11:36:47 +0000 From: Bruce Richardson <bruce.richardson@intel.com> To: Ansar Kannankattil <ansarkannankat@gmail.com> Cc: Ferruh Yigit <ferruh.yigit@intel.com>, Stephen Hemminger <stephen@networkplumber.org>, dev@dpdk.org Subject: Re: Can I use rte_pktmbuf_chain to chain multiple mbuffs for calling only single tx_eth_burst API Message-ID: <YgT4z+7E+NtZ5ukt@bricha3-MOBL.ger.corp.intel.com> References: <CAPA_rBexb_JKhGtxp4uQ1M-5F0RXpvpOHxDCso5VxmjRxkL1eA@mail.gmail.com> <fa4dcbb4-00aa-8691-69a7-9de173d3698d@intel.com> <20220209144617.79834bd6@hermes.local> <7dccdaf8-10d0-69f2-2a91-791dde993cee@intel.com> <CAPA_rBcKPFkBomMRr0-dPuTEZi32Dp_rA-QaqN_KwUxsWErTJA@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <CAPA_rBcKPFkBomMRr0-dPuTEZi32Dp_rA-QaqN_KwUxsWErTJA@mail.gmail.com> X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org On Thu, Feb 10, 2022 at 04:07:02PM +0530, Ansar Kannankattil wrote: > Thanks for the responses, > Then what is the advantage of chaining mbuffs over using the mbuff > array? > They imply different things. * An array of mbufs represents multiple packets. * A chain of mbufs is a single packet. Therefore, an array of three mbuf pointers always represents 3 packets. Each one of the mbufs pointed to from that array may have multiple segments i.e. chained via the next pointers, but that chain is still a single packet.