From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt1-f170.google.com (mail-qt1-f170.google.com [209.85.160.170]) by dpdk.org (Postfix) with ESMTP id 15D9F5F65 for ; Mon, 24 Sep 2018 18:59:03 +0200 (CEST) Received: by mail-qt1-f170.google.com with SMTP id k38-v6so10203161qtk.11 for ; Mon, 24 Sep 2018 09:59:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=h0rsqEz2BbyaMaDn6LJQkM1d382WvfiFxbipk2SWIsg=; b=c80vyYyMdv1tq+FevxzguOcfdcQI/LwzZocrSdEkOVBxFljJGRReCCaKQ1ClChJhI4 XWoOS3iTVIKY53IYp6MIl+Ow5N65ADzgDN/WJBFRSeurfNYCsia4EHEYg6TZyMtRm+X8 XI9eJ00sRHaj8aTvhQ4MOE6Cr8OND11rovRKL6htEg6obzaNZAUUg+jpjzzGITGpw0xz GYp9h2hId4CUu2O6W0cnGFmfGlXhpDSFNzrDNMYGEyC3rKuRV+NWSTo/WRyXPI2U3mSc +FxbYfed9jF+pmVX+e/wDh893shR1qrb7FTl/JsuYMnKDTtlM2eUYFpiERrFg5M0arJw 1pmQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=h0rsqEz2BbyaMaDn6LJQkM1d382WvfiFxbipk2SWIsg=; b=nZOeBb4maH6s1nP0GPdHjZKUdMnvY2YTA6qPJ1I0zWx+e7Oy7kjTFAWg8vygdPjoXv KVyYN61UFoXWYfzfh/o7QkEWbSzlxcF3Nklmrhgf0Txx5527JskIDEkR0PEY/oQwOhLF NWhUqwtonSxeq5Iw1toq2NHRBfYQqmh2K2gYTSwG8a5UCHu4YhHyE1q5g/CUhTnAKfga x1bRn+HGwU4C8140IYaqVNuaIbx9L6bzVSp0vamwSIeLtWApC9rMrSnSpKo0BhDar5UD TCi+Y/NhAia55SxAeQnyP3kPA55cIfl4xo9YYmhx53/xkPPP4MIrXYllgclGxdISQ5oN 7NlA== X-Gm-Message-State: ABuFfoglTKkYbEZ/CJWpEabY64LQlb0pCpyzIUoZTCeiqTMyLhR6SEML db+jU31RhqExJ2kViwWEi2snq8Kl8epHl3KHsx0zAIC/ X-Google-Smtp-Source: ACcGV61L/Ibm2bQwiVtXTspjZ8Rzaw42HZ4t35amu9QBcKyaKMutDfTFjHfHifEvRQbPOWfIV0A7l1zqv/WagrtUP4A= X-Received: by 2002:a0c:ad37:: with SMTP id u52-v6mr4664072qvc.132.1537808342241; Mon, 24 Sep 2018 09:59:02 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Anupama Laxmi Date: Mon, 24 Sep 2018 22:28:50 +0530 Message-ID: To: users@dpdk.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: Re: [dpdk-users] UDP bad checksum errors X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Sep 2018 16:59:03 -0000 UDP checksum is set to 0 and Hardware offloading is disabled to prevent the UDP checksum errors. Is this the only way out?Is there Hardware virtualization limitation with respect to UDP checksum computation?Please suggest how to resolve UDP bad checksum errors with Hardware offloading set ? On Mon, Sep 24, 2018 at 10:18 PM Anupama Laxmi wrote: > Hi, > > UDP checksum cannot be computed by Hardware virtualization( Intel 82599 > SRIOV PCI passthrough, DPDK V1.7 ).UDP bad checksum errors are observed in > the tcpdump(pcap) collected after host on the Service router when the UDP > checksum computation is Hardware offloaded. > > Thanks, > > >