From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 355FAC432C0 for ; Sun, 1 Dec 2019 16:55:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 051EC2073C for ; Sun, 1 Dec 2019 16:55:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="djDDcmb0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727298AbfLAQyr (ORCPT ); Sun, 1 Dec 2019 11:54:47 -0500 Received: from mail-io1-f48.google.com ([209.85.166.48]:47062 "EHLO mail-io1-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727165AbfLAQyr (ORCPT ); Sun, 1 Dec 2019 11:54:47 -0500 Received: by mail-io1-f48.google.com with SMTP id i11so37507459iol.13; Sun, 01 Dec 2019 08:54:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=2rtYPKXu0wUef3OhDol+BP9kZOGI7cYX1kVkgWIxDkA=; b=djDDcmb07Y7ohpmWUHxZKhWxBBNA92ZcXK6LhlPIl0GLkibJY5GsSTHutNLFtsxdjU fcIaXrtuTJf+D2N2xK4a/duYUaR8hbcGCgsE8DjHomULTUQTgBlArPUkyHr94Dg78qiD CqDvk7XbEdlUBHFFBhGDDSgIfnbdyDGM42kFWiXVVn2F/3egkJycyyhv+k5QeeoM9yIL 3gEYRX8/6hiN1+R0NCWxrCwDx118fYgBfSNyMvda+JdLSdnbNnbOGdADh6r+1VcCi/CF R7VwAiCl81M4/NU6D/XBHfAcayCNtTGYJsoNXOw7VitOEFUu3IU/lJVnXtFfa3uqJrcM UkvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=2rtYPKXu0wUef3OhDol+BP9kZOGI7cYX1kVkgWIxDkA=; b=i7rgvRn2drpjQUrRI3721pic9qq9GiAdAkUpwVm5WnLt0sv3oy/RDDAfIJaQkXCFxI LtPW/+X4PNAJJfwlvNB7QV9piHhnfmpjSJM5/8oCwI40XSmXzCXWw3FWu/AQPckA0jA1 GzcLveFqWhUajzJpZTZ+8ahwjbvAjNv077nfe81Z+WGypxoofRWmQSrQviW9TtInF1fQ vQECYbddHseSqP1vXjPF9wsma+RoGMIL7OZP+7G01I+Eh7C6/jDcYprjDr2oI0mvPG/J 7GYF2cEAvV0hN8TJWHMcbuhmrt9rRHCQKlI6Uy6P4fITX+9o+U+DYHSuCpZHy2l04056 aA1g== X-Gm-Message-State: APjAAAUkssqHgTIxNR3Td3u3AXnB/NkC03OqigNqDlCGBAzc6xg13bbW 8EWOvDAOEufNEVnJz0zoakilo4Lv X-Google-Smtp-Source: APXvYqy1H3L0+0XKonVV1/vbmEUW8a220uqNNPbGk+oPe4TuLdAUDVUKK7r/sjoMDX1ZeQeq2PGW2Q== X-Received: by 2002:a6b:8b44:: with SMTP id n65mr49370974iod.19.1575219286530; Sun, 01 Dec 2019 08:54:46 -0800 (PST) Received: from dahern-DO-MB.local ([2601:282:800:fd80:fd6b:fde:b20f:61ed]) by smtp.googlemail.com with ESMTPSA id k199sm8870660ilk.20.2019.12.01.08.54.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 01 Dec 2019 08:54:45 -0800 (PST) Subject: Re: [RFC net-next 00/18] virtio_net XDP offload To: Jason Wang , Alexei Starovoitov , Jakub Kicinski Cc: Song Liu , Jesper Dangaard Brouer , Daniel Borkmann , "Michael S . Tsirkin" , qemu-devel@nongnu.org, netdev@vger.kernel.org, John Fastabend , Alexei Starovoitov , Martin KaFai Lau , Prashant Bhole , kvm@vger.kernel.org, Yonghong Song , Andrii Nakryiko , "David S . Miller" References: <20191126100744.5083-1-prashantbhole.linux@gmail.com> <20191126123514.3bdf6d6f@cakuba.netronome.com> <20191128033255.r66d4zedmhudeaa6@ast-mbp.dhcp.thefacebook.com> From: David Ahern Message-ID: <0aa6a69a-0bbe-e0fc-1e18-2114adb18c51@gmail.com> Date: Sun, 1 Dec 2019 09:54:44 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 11/27/19 10:18 PM, Jason Wang wrote: > We try to follow what NFP did by starting from a fraction of the whole > eBPF features. It would be very hard to have all eBPF features > implemented from the start.  It would be helpful to clarify what's the > minimal set of features that you want to have from the start. Offloading guest programs needs to prevent a guest XDP program from running bpf helpers that access host kernel data. e.g., bpf_fib_lookup