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=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_NEOMUTT autolearn=ham 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 3C453C43381 for ; Thu, 14 Feb 2019 02:39:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 079AA222A4 for ; Thu, 14 Feb 2019 02:39:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="tz5F7uBe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405140AbfBNCjV (ORCPT ); Wed, 13 Feb 2019 21:39:21 -0500 Received: from mail-pf1-f196.google.com ([209.85.210.196]:41336 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726325AbfBNCjV (ORCPT ); Wed, 13 Feb 2019 21:39:21 -0500 Received: by mail-pf1-f196.google.com with SMTP id b7so2246279pfi.8 for ; Wed, 13 Feb 2019 18:39:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=dpwjo2xX+fdP54ZoRQzrW+sjzwHbnoAT1MWJRM8z5Hw=; b=tz5F7uBeg3jZN/xRZIvwIrKCJbvrjl6lmOmjfkRNOmxL13COTbcTKbRctvSQbBEbyj JzTUy+VVqgP+zE6SfZ6Ji8js/P8s3REv/sKx4lYWWxNQ5NbnPHYtIL9e/fo+ZkgcGnw0 bTRjV7Td0kRc8+QMO5otiuMh0+wRmxjnmvVoATUaqAHBkomcAOSmr9yrYOj1tVrjp0qQ SEu1vePlpVU8m/M7w0CSscsXc4Xzc39+7CsjSAOw3jeL28l3kLcMIV03BdIg2yRaKZaW S9GZ71rkBcSyaIbQLC1V50VF/exigoU4tRgFJb31jqB80f/P+SLoJsWgaiGYLRHUMRV8 NDxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=dpwjo2xX+fdP54ZoRQzrW+sjzwHbnoAT1MWJRM8z5Hw=; b=fNOL/s2oP+To8i9cbrbVEATQoYnpPja2SENfaONGDDJvzsW3Hy6VUJg49s82GbzBna C5sKMgKPMyLDQYF4qFDnlszLIH4RI0tqT5/7xBmuufweH11k1ppzipXDfiyPTuPf/d7D CUYw8oIvn+Ygd+Cl4hTpRrGbp8UeQAVPlfZxbirWj+UPCbKqE9NZuRiufGtgr+QyRFiQ GxYCYxuQbvBJcayAjMkBTA+wbR94DI7hKFzDtE+zUcF7tQ3wh0QPkuq6NFJIikXhu4jO dJuenf1Lm08d9VwfGV1hdDUQ1BbAbTtIaG4C4/RLZPAewBVBinUn3TeJgnzGMhGaS9XI PEqg== X-Gm-Message-State: AHQUAuY3mVsO8Vl1EOH25Qa21FYJE8qzhLqzMlkeRUIDO9cWyFkISMd5 9c27PJgjxLsWlE8DLd9Y84jCcvAT X-Google-Smtp-Source: AHgI3IbroakVXtrkfJtp9LaYOqyGLbTsllIMCe71npIYlUTQWBAQnM+Y4wup9dZ3t4+9aPjS7PIszw== X-Received: by 2002:a63:534c:: with SMTP id t12mr1423410pgl.205.1550111960864; Wed, 13 Feb 2019 18:39:20 -0800 (PST) Received: from ast-mbp ([2620:10d:c090:200::7:963]) by smtp.gmail.com with ESMTPSA id r12sm726761pgv.83.2019.02.13.18.39.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 13 Feb 2019 18:39:19 -0800 (PST) Date: Wed, 13 Feb 2019 18:39:18 -0800 From: Alexei Starovoitov To: David Ahern Cc: Peter Oskolkov , Alexei Starovoitov , Daniel Borkmann , netdev@vger.kernel.org, Peter Oskolkov , Willem de Bruijn Subject: Re: [PATCH bpf-next v11 0/7] bpf: add BPF_LWT_ENCAP_IP option to bpf_lwt_push_encap Message-ID: <20190214023916.fu6ymperb4lqi632@ast-mbp> References: <20190213195341.184969-1-posk@google.com> <783b5578-cba4-904d-4ade-c8c08b47a3ba@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <783b5578-cba4-904d-4ade-c8c08b47a3ba@gmail.com> User-Agent: NeoMutt/20180223 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Wed, Feb 13, 2019 at 05:46:26PM -0700, David Ahern wrote: > On 2/13/19 12:53 PM, Peter Oskolkov wrote: > > This patchset implements BPF_LWT_ENCAP_IP mode in bpf_lwt_push_encap > > BPF helper. It enables BPF programs (specifically, BPF_PROG_TYPE_LWT_IN > > and BPF_PROG_TYPE_LWT_XMIT prog types) to add IP encapsulation headers > > to packets (e.g. IP/GRE, GUE, IPIP). > > > > This is useful when thousands of different short-lived flows should be > > encapped, each with different and dynamically determined destination. > > Although lwtunnels can be used in some of these scenarios, the ability > > to dynamically generate encap headers adds more flexibility, e.g. > > when routing depends on the state of the host (reflected in global bpf > > maps). > > > > > For the set: > Reviewed-by: David Ahern Applied. Thanks everyone!