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=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 8E899CA9EA0 for ; Tue, 22 Oct 2019 17:45:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 66CD32084B for ; Tue, 22 Oct 2019 17:45:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Bwh8qDWB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727881AbfJVRpM (ORCPT ); Tue, 22 Oct 2019 13:45:12 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:31908 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727152AbfJVRpL (ORCPT ); Tue, 22 Oct 2019 13:45:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1571766310; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=84NOK6JlBnakomHmdK8lEf2i89cFK17pqxVXj9BUO1k=; b=Bwh8qDWBDVdylOUwwGYGRPJvJpKg2tfPUOUdTb1h9Q7RbsFwurXwyVFVyHSgRe2nbRDUM+ OqHf7DIp+hBqZaHZTeG4ieDSiZByOkSCD3MCIdMW0ESCoKsP9ySFKGykR4UYGg+gHwZdKn XAk/nCu2tIKWGmn7DFwBu73h10WiKIo= Received: from mail-lj1-f197.google.com (mail-lj1-f197.google.com [209.85.208.197]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-29-GXtWpp5RPjOptOVIsyuuxg-1; Tue, 22 Oct 2019 13:45:08 -0400 Received: by mail-lj1-f197.google.com with SMTP id v24so3103853ljh.23 for ; Tue, 22 Oct 2019 10:45:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references:date :message-id:mime-version; bh=84NOK6JlBnakomHmdK8lEf2i89cFK17pqxVXj9BUO1k=; b=FQc+N0m1N/ne3lggTbtuWYXaxcMW9ahzmqyb2zezNh0+IfHG/eu5XIKcjJrPf9qDdm 5d4dWXLRbjIOTB9SjfXFzaK/IjIBBRTvQbGDZGI/KQERNM23NFx0ubXMgbHPZQB0v4po Wyh6oVHRbJwQM47MNKDbuGxSBYQZJaCxCcio4Z63DPYtQ0sJdnYk9hM3W1eWBsFqAW4x 5S6HuN07eDlat2aOjh8YCbF/vrkCTdlV0z+gmG5+PjGDk7rbRF6TxfPYCn+Ur6dSxK75 V6UVUhGi56WNx3uNfGzP0sg8+ujI8yBCaYfxPNRRHPjxUAZvUpLSd/abINxZaWK24H/y LPSA== X-Gm-Message-State: APjAAAXnfMrgeVWuTAzWE9xu1f1GQYl1zDZVzrDv5v3qDYZSAifGdDzP AgJ71opJflkn4p3sIOVks3eDX84RnjcpXC2kFRFZxZzw0B09O/6ZYD0BziL8lUmNOfkDSci3wNX e17N6AySrL6cV X-Received: by 2002:a19:6759:: with SMTP id e25mr18854011lfj.80.1571766307516; Tue, 22 Oct 2019 10:45:07 -0700 (PDT) X-Google-Smtp-Source: APXvYqyWaFofKCqI5Dh4lYpflNmAetMBkkoN5rdIx4shy+jTuAP5JoYEhNPwO1ylG1Uqw2N1zImLUw== X-Received: by 2002:a19:6759:: with SMTP id e25mr18853990lfj.80.1571766307340; Tue, 22 Oct 2019 10:45:07 -0700 (PDT) Received: from alrua-x1.borgediget.toke.dk ([2a00:7660:6da:443::2]) by smtp.gmail.com with ESMTPSA id a18sm5692318lfi.15.2019.10.22.10.45.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Oct 2019 10:45:06 -0700 (PDT) Received: by alrua-x1.borgediget.toke.dk (Postfix, from userid 1000) id BF9081804B1; Tue, 22 Oct 2019 19:45:05 +0200 (CEST) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= To: John Fastabend , Toshiaki Makita , John Fastabend , Alexei Starovoitov , Daniel Borkmann , Martin KaFai Lau , Song Liu , Yonghong Song , "David S. Miller" , Jakub Kicinski , Jesper Dangaard Brouer , Jamal Hadi Salim , Cong Wang , Jiri Pirko , Pablo Neira Ayuso , Jozsef Kadlecsik , Florian Westphal , Pravin B Shelar Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, William Tu , Stanislav Fomichev Subject: Re: [RFC PATCH v2 bpf-next 00/15] xdp_flow: Flow offload to XDP In-Reply-To: <5daf34614a4af_30ac2b1cb5d205bce4@john-XPS-13-9370.notmuch> References: <20191018040748.30593-1-toshiaki.makita1@gmail.com> <5da9d8c125fd4_31cf2adc704105c456@john-XPS-13-9370.notmuch> <22e6652c-e635-4349-c863-255d6c1c548b@gmail.com> <5daf34614a4af_30ac2b1cb5d205bce4@john-XPS-13-9370.notmuch> X-Clacks-Overhead: GNU Terry Pratchett Date: Tue, 22 Oct 2019 19:45:05 +0200 Message-ID: <87h840oese.fsf@toke.dk> MIME-Version: 1.0 X-MC-Unique: GXtWpp5RPjOptOVIsyuuxg-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org John Fastabend writes: > I think for sysadmins in general (not OVS) use case I would work > with Jesper and Toke. They seem to be working on this specific > problem. We're definitely thinking about how we can make "XDP magically speeds up my network stack" a reality, if that's what you mean. Not that we have arrived at anything specific yet... And yeah, I'd also be happy to discuss what it would take to make a native XDP implementation of the OVS datapath; including what (if anything) is missing from the current XDP feature set to make this feasible. I must admit that I'm not quite clear on why that wasn't the approach picked for the first attempt to speed up OVS using XDP... -Toke