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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 5B507C3A59B for ; Fri, 30 Aug 2019 15:19:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2FA7623427 for ; Fri, 30 Aug 2019 15:19:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=6wind.com header.i=@6wind.com header.b="AXNM1HLK" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728042AbfH3PTG (ORCPT ); Fri, 30 Aug 2019 11:19:06 -0400 Received: from mail-wr1-f53.google.com ([209.85.221.53]:40551 "EHLO mail-wr1-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728072AbfH3PTF (ORCPT ); Fri, 30 Aug 2019 11:19:05 -0400 Received: by mail-wr1-f53.google.com with SMTP id c3so7361077wrd.7 for ; Fri, 30 Aug 2019 08:19:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind.com; s=google; h=reply-to:subject:to:cc:references:from:organization:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=glVlYMR3iJhyiPBG5wCXHa8wRhub+uwH1lFexuA4XEI=; b=AXNM1HLKNPVcFv1ufegi7tAiysV9gC5dkmpDjJ/g3a7qS15K0LHy7sPnkUdWmJ49pA a9KTnCWb8JUYDurBTe5IljESci33si+SNwzSbpTja5gVCEs4Q5Psh8PE/pBzsOIb1xqm FJEfO5QJLm8Zhg63Vx91Wto15ufXq0Y2RtmXAFnn4R1YFKb8OU5GoJGB6EuKTu0SRxhj yvL+l4YDXLfvFOc9CUqdM2TVFZ8hxBI5KAw3ukAowJgDVojTUx3GuabRTVLGmkvKpHI5 pQ/Kcx3KgXhmJ732h9arKYdN3wNG5a+Eu1Xe0M7z52Ct5aUG1+mW5XvrmVgHxLDatHRh P84w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:reply-to:subject:to:cc:references:from :organization:message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=glVlYMR3iJhyiPBG5wCXHa8wRhub+uwH1lFexuA4XEI=; b=JgnmaJ9CdluUVO+kY6LY/mwaE1hk8aCCkB8wvcCFAsiyz9JtgLWLm569UzUhwD2xCY 4Lg/Efz2fxGG9icH1EVIg6j9ITjFYeM7ftgqkwUxbn9Da3iiCretMWkcgShH2+PzRGqh NgAE8LSANdvnt0vvg1Q2drAuiBTML5xG2dnK30P/zz8eDLfplmIbMJ57bnprkc9ib58H WXSCIGoWbylrt/Xdtj3IZFjwbdnlGfvzNmMryOtYb20+zDVM5AZc/wlqtrB9kCapKtrg rJBNO97WuP9TCP4evFpWG+qCtymV6270SEWtFWExl4AvGY8X61X0Go+QuOJLg1Q290eg H7fg== X-Gm-Message-State: APjAAAWm4a+9+IfhRNiiXmXfIZGSvjtL3vRqERRNWVF15Y82qD/9/Bo4 A6vJuYDOdwhXN6IAP03SMgM3tw== X-Google-Smtp-Source: APXvYqzWvQySjLF6+FggzOgd22xwvNvT+s3gjz+CDa4+QrDRWfsRdNlyCXLvTk1FytVHcJq6yIy4eg== X-Received: by 2002:a5d:6987:: with SMTP id g7mr5891327wru.306.1567178343683; Fri, 30 Aug 2019 08:19:03 -0700 (PDT) Received: from ?IPv6:2a01:e35:8b63:dc30:dd14:ded7:6a4e:962e? ([2a01:e35:8b63:dc30:dd14:ded7:6a4e:962e]) by smtp.gmail.com with ESMTPSA id z10sm1202415wrg.12.2019.08.30.08.19.02 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 30 Aug 2019 08:19:03 -0700 (PDT) Reply-To: nicolas.dichtel@6wind.com Subject: Re: [PATCH v2 bpf-next 2/3] bpf: implement CAP_BPF To: Alexei Starovoitov , Daniel Borkmann Cc: Alexei Starovoitov , luto@amacapital.net, davem@davemloft.net, peterz@infradead.org, rostedt@goodmis.org, netdev@vger.kernel.org, bpf@vger.kernel.org, kernel-team@fb.com, linux-api@vger.kernel.org References: <20190829051253.1927291-1-ast@kernel.org> <20190829051253.1927291-2-ast@kernel.org> <20190829173034.up5g74onaekp53zd@ast-mbp.dhcp.thefacebook.com> From: Nicolas Dichtel Organization: 6WIND Message-ID: <59ac111e-7ce7-5e00-32c9-9b55482fe701@6wind.com> Date: Fri, 30 Aug 2019 17:19:02 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190829173034.up5g74onaekp53zd@ast-mbp.dhcp.thefacebook.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Le 29/08/2019 à 19:30, Alexei Starovoitov a écrit : [snip] > These are the links that showing that k8 can delegates caps. > Are you saying that you know of folks who specifically > delegate cap_sys_admin and cap_net_admin _only_ to a container to run bpf in there? > Yes, we need cap_sys_admin only to load bpf: tc filter add dev eth0 ingress matchall action bpf obj ./tc_test_kern.o sec test I'm not sure to understand why cap_net_admin is not enough to run the previous command (ie why load is forbidden). I want to avoid sys_admin, thus cap_bpf will be ok. But we need to manage the backward compatibility. Regards, Nicolas