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=-3.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 CC7ADC54FCB for ; Sun, 26 Apr 2020 16:03:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A9DF220706 for ; Sun, 26 Apr 2020 16:03:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="j4U0ucFX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726296AbgDZQDE (ORCPT ); Sun, 26 Apr 2020 12:03:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1725778AbgDZQDD (ORCPT ); Sun, 26 Apr 2020 12:03:03 -0400 Received: from mail-lj1-x244.google.com (mail-lj1-x244.google.com [IPv6:2a00:1450:4864:20::244]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 292BEC061A0F; Sun, 26 Apr 2020 09:03:03 -0700 (PDT) Received: by mail-lj1-x244.google.com with SMTP id a21so12061198ljj.11; Sun, 26 Apr 2020 09:03:03 -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 :cc:content-transfer-encoding; bh=uVMo5mYKGraHPBeJ1pf1ZYyBBNC6aAFTC/tR7qWS7Jc=; b=j4U0ucFXvk/rIPae5mhG0g4nvKOC37AhBVhSYPYBT0jYzuso0nDSY9rH8P1MOghtA1 UiAsnJwNHiVUdGCvdkvXH2jsJCGbA2ZWMrCZU2TTHgh2dHnQVIEZxxT/RoZ/IaoRZXmf 4keYyIEQ7DdBk3JXU1UNLc3fcsEjNZ4VgAWAVt4xfo96VNGmPodRNy0GlnZJwPz4T9P9 b6dm3Ukz+odrqdEWd0v6jCrH9tjr8hTP1vGZ0iAjRk9NME39pk/cy1BZzqeD/XYCl2BY qVBMNMYt8PTfYr8Euwn7lOFVqFTVaQ/xTiumi3Jn51zuRfnw9VHrs2ug6H0W2ewIlTxV KKsw== 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:cc:content-transfer-encoding; bh=uVMo5mYKGraHPBeJ1pf1ZYyBBNC6aAFTC/tR7qWS7Jc=; b=YuTXYtxzDGviDQcAOP4M/VBXbbRuJtBz11Ca0pgYn/laAeOpPUsxOCL1UVmBZ1zkjN CWmfhJdGIq3fw1YKZ+GRj9vrmPHukE54I3itVMN8ODLIP6FVohCg/C9XqakMJ1jLk5R0 /VD55axfyuZXd0L5a28PXSGPCHnVvPBntiFKOlYZKJUsCfd3vpz58RBaG0CT8tt95d5F FVjkkznYbgs1gRk/ge6vKRiCxg6Uag7ta5+gq51M56pB1vMG8Pt4leig8SziLsJz6NG4 YuQ1C1G1WGonaVd43NkUYiSrdwG6BHwmendK3bL4WpWsjN9dKXK6HubxvWnfGt/9jg/t ERHA== X-Gm-Message-State: AGi0PuY2QfQPJT3NDwtooZ4dDgwRWUM7xzomYI0Eywt7shRlo4ZLLGjr 7/sikeDVtf+LBoT7RRqaXo/xIs+qNTQiFyUhhbg= X-Google-Smtp-Source: APiQypIX4ngSLuedu5ijVFWv81JZvAx6/42/MQBxEq1evI40OvHuAUJ2gxB0uq/A/gDtxjVQmcEqO9TJGhOrcpMzjgI= X-Received: by 2002:a2e:990f:: with SMTP id v15mr10954772lji.7.1587916981488; Sun, 26 Apr 2020 09:03:01 -0700 (PDT) MIME-Version: 1.0 References: <20200420183409.210660-1-zenczykowski@gmail.com> In-Reply-To: <20200420183409.210660-1-zenczykowski@gmail.com> From: Alexei Starovoitov Date: Sun, 26 Apr 2020 09:02:49 -0700 Message-ID: Subject: Re: [PATCH] net: bpf: Allow TC programs to call BPF_FUNC_skb_change_head To: =?UTF-8?Q?Maciej_=C5=BBenczykowski?= Cc: =?UTF-8?Q?Maciej_=C5=BBenczykowski?= , Alexei Starovoitov , Daniel Borkmann , Linux Network Development Mailing List , LKML , "David S . Miller" , Lorenzo Colitti Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 20, 2020 at 11:34 AM Maciej =C5=BBenczykowski wrote: > > From: Lorenzo Colitti > > This allows TC eBPF programs to modify and forward (redirect) packets > from interfaces without ethernet headers (for example cellular) > to interfaces with (for example ethernet/wifi). > > The lack of this appears to simply be an oversight. > > Tested: > in active use in Android R on 4.14+ devices for ipv6 > cellular to wifi tethering offload. > > Signed-off-by: Lorenzo Colitti > Signed-off-by: Maciej =C5=BBenczykowski Applied. Thanks