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=-1.8 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,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 58EBFC432C0 for ; Sun, 1 Dec 2019 16:55:39 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 23DB62073C for ; Sun, 1 Dec 2019 16:55:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="djDDcmb0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23DB62073C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53086 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ibSVW-0007q1-BB for qemu-devel@archiver.kernel.org; Sun, 01 Dec 2019 11:55:38 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:43669) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ibSUi-0007NW-CX for qemu-devel@nongnu.org; Sun, 01 Dec 2019 11:54:49 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ibSUh-0003SR-DM for qemu-devel@nongnu.org; Sun, 01 Dec 2019 11:54:48 -0500 Received: from mail-io1-xd36.google.com ([2607:f8b0:4864:20::d36]:35864) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ibSUh-0003Rv-93 for qemu-devel@nongnu.org; Sun, 01 Dec 2019 11:54:47 -0500 Received: by mail-io1-xd36.google.com with SMTP id l17so11355811ioj.3 for ; Sun, 01 Dec 2019 08:54:47 -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=tOtYUZsM4sLx5zmFd4YJ7kPKfF5sNKWMN8JfCPsswdADbW+0x8bpcir6FigrcqRSnH zlVAZ3ACziVynvlIlw3rrxIWkY8eViKErZejWyhymFTKbdFMgfv11BPbmxVK42jKfY6w GMJmjnmf4omnoh0AhhVChRHI7mIL/P/Qo8uFTmayztzcXiRO6BL3TYO0ZfCRnBQLB7f6 0/PFDEYX0SjlV8O97B0AeNtHcBAWdIsBLSreUsduO7Gar+F/BDMjt0BSZ8dkcin4RebY zID6s5VWK3p1c1Fgi87veRJ+Zybz//s0nRQ4Ss55FdNNEkvlI+Z2PBk+cpr/1xzSU3U/ LhGw== X-Gm-Message-State: APjAAAX/5Hz5z7s6x0RsplzSwew7rzKQ3TRtZe/t8sHZD3jgStLO/sss 4CLIKKNL6XtQRfBOfRt7wPU= 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 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 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::d36 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Song Liu , Jesper Dangaard Brouer , Daniel Borkmann , "Michael S . Tsirkin" , netdev@vger.kernel.org, John Fastabend , qemu-devel@nongnu.org, Alexei Starovoitov , "David S . Miller" , Prashant Bhole , kvm@vger.kernel.org, Yonghong Song , Andrii Nakryiko , Martin KaFai Lau Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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