From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-f181.google.com (mail-lb0-f181.google.com [209.85.217.181]) by dpdk.org (Postfix) with ESMTP id 9CF022C61 for ; Tue, 22 Mar 2016 21:36:28 +0100 (CET) Received: by mail-lb0-f181.google.com with SMTP id k12so173105753lbb.1 for ; Tue, 22 Mar 2016 13:36:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc; bh=SyaZ+FWoz3XyRV1AjqyE6eYly1vroQ62e3mrx6LV05w=; b=Zc94vb3MphjSGCuq8fEmFPhnyR8Vt1z0Qht+DSTgtm5vrZ6LZJocA2nk2qiBC/JAiX 7MQZlo/rI3j16ONL/UAT71EZDIYv7nEKzY64q0sY/Adcn+c+Qunme9gzH5jPV83rT7iw +jymGUE+CY54AHjSxH42nYV42sVMauRIgOy30NegaD0gsWcyZnmHZ1o3+kz83bc0Ljry VrAvbMrjPD1oKfV1or7hQsknrrXgfb2jraM4cbr1tNTdU1TN/3tUmeYmtGs2d/UEflXv XkTCyqVK/M48xXPCo8QMcmyznZqq10GhOQM7Wgck+0R0GK9pC+698H/UV2rMehPveAXX Xqjg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc; bh=SyaZ+FWoz3XyRV1AjqyE6eYly1vroQ62e3mrx6LV05w=; b=YhAaSZSvWRIta78CwZekiHZzOiLFEzWs/T1yWUkq3MRKB/veqAp867oRK7vdJRXfxt kc+EWUIMWrfQR62bOd4R9i6Ku2Lq53kXwGpj6OAufRcYweXzrl4IMaGYwzT+mmgf+rU4 1AwIUF6zqniwpGHxpEo2SMlDMQ25cCp+enY8Sp0NrmgHaBucObC/FXcy53emiuvWOsnJ hMRQalhY9T04+xKI+MobizijEb7xIPQrpQhcl3HRG453HravsZb1akw9PNToBrLVxGoV vzaajfy2z5YnO2290d4rZqXsgDl4vdi44xE0nREmwAVat3on5v+g1gO91N8xfsiE5gmL ps0Q== X-Gm-Message-State: AD7BkJJEbAVTt/UTHbFWMEgG4GbrV7PwcS1Ra83USJEeuQPoc94sbXpS8fv9sW99SQdddkoy1zmAm5o56j/grw== MIME-Version: 1.0 X-Received: by 10.112.161.68 with SMTP id xq4mr14062745lbb.29.1458678988242; Tue, 22 Mar 2016 13:36:28 -0700 (PDT) Received: by 10.114.233.36 with HTTP; Tue, 22 Mar 2016 13:36:28 -0700 (PDT) In-Reply-To: <20160322102740.GC19268@bricha3-MOBL3> References: <20160322102740.GC19268@bricha3-MOBL3> Date: Tue, 22 Mar 2016 13:36:28 -0700 Message-ID: From: Clarylin L To: Bruce Richardson Cc: dev@dpdk.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: Re: [dpdk-dev] multi-segment mbuf X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Mar 2016 20:36:28 -0000 Sorry my bad. The mbuf size has been accidentally changed to 3000. After fixing this by setting mbuf size to 2048, multi-segment mbuf still doesn't work. I was trying to send 2500-byte packets to the target system and was expecting to see two-segment mbuf chain), but got errors on it. Tue Mar 22 14:52:00 2016^@PMD: rte_enic_pmd: packet error Tue Mar 22 14:52:01 2016^@PMD: rte_enic_pmd: packet error Tue Mar 22 14:52:02 2016^@PMD: rte_enic_pmd: packet error Tue Mar 22 14:52:03 2016^@PMD: rte_enic_pmd: packet error Tue Mar 22 14:52:04 2016^@PMD: rte_enic_pmd: packet error Is enic supporting multi-segment mbuf? The dpdk version is 2.0.0. I have enabled jumbo-frame and enable_scatter for the port. On Tue, Mar 22, 2016 at 3:27 AM, Bruce Richardson < bruce.richardson@intel.com> wrote: > On Mon, Mar 21, 2016 at 04:34:50PM -0700, Clarylin L wrote: > > I am trying multi-segment mbuf, but it seems not working. > > > > On my target host, the mbuf size is set to 2048 and I am trying to send > > large packet to it (say 2500 bytes without fragmentation) from another > > host. I enabled both jumbo_frame and enable_scatter for the port. But I > saw > > on the target only one mbuf is received with data_len equal to 2500 (it's > > supposed to be a two-mbuf chain). Although mbuf itself is not working as > > expected, ping between two hosts succeeded (large ping size; no > > fragmentation). > > > > 1. my mbuf size is only 2048. how can it support receiving such large > > packet in one mbuf? > > > > 2.how to make it work as expected (enable multi-segment mbuf and receive > > using mbuf chain when needed)? > > > > Appreciate your help. > > Hi, > > when you get the single mbuf with data_len == 2500, what is the buf_len > value > reported as? > > /Bruce >