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=-10.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_MED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable 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 A39A2C28EB3 for ; Thu, 6 Jun 2019 17:51:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7F38120872 for ; Thu, 6 Jun 2019 17:51:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="dcY56VPl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728865AbfFFRvu (ORCPT ); Thu, 6 Jun 2019 13:51:50 -0400 Received: from mail-ua1-f74.google.com ([209.85.222.74]:38156 "EHLO mail-ua1-f74.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728816AbfFFRvt (ORCPT ); Thu, 6 Jun 2019 13:51:49 -0400 Received: by mail-ua1-f74.google.com with SMTP id j22so607885uaq.5 for ; Thu, 06 Jun 2019 10:51:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=JCwv+UD4yQBiRat0LbHtuxWmZ8WThdMX43Z60hYFlcA=; b=dcY56VPlNU1UmmXBB1IyITcEr//sUVUAdlNZy9SuAbRjX9y/SMTDEDPQdr+g7EEB6r ZOuf2dPmD+E495d2hfhPWCPPRFRjlcU/DTvh2Pk7IyB+gEv7RfzDUT8aDXbEHdyCTXvF z4vog1tCuslJzLz6rXp2mWCcUFzQFzP6RYPHdLKubVpNeu7vov1uJuaqh0r/hwYAfuMS TxD7DtwiEFKZuMOyDGk/Qf0dPM0wMbUGPvpkOctCJQY5/8/3XvBegwbdYwJOuitgeKh3 Y4DiV2dI12XrTScKe6FWTXOIal8kgoQ148W17MaI+j3LDfY6xtJrJwWZgoD6RfegEbxZ NCfw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=JCwv+UD4yQBiRat0LbHtuxWmZ8WThdMX43Z60hYFlcA=; b=fwlmGMEMJp5JD044niAtJ4pn/BnvZHScB/oTkTADlBSIWug2ZmERdUAoaBrWjbysD3 X9mHIelbcz09PL9v50SFfcPgMIZUHGBzhDTcS5k948pBC18x5hUds+YlT3wBW0OAcYfV 4/hlQJlP/JissyRCmUPcDF934yAA9xKDoScwCN9/29j34A+x9xxu/fBFHjczPri2X5Zr PqlyJvN+EUQOAIHRly/QCTiESjvdLKmBpBphwuxxfh+QsW6eekhhp/vmy+0ImxKe2RQq eTOE9elofeE09vRSntXX5PDA/y0gq8pe8bxb52kZqVK9uQ/0z0pvuufRE+WrH38w/kEB xVVw== X-Gm-Message-State: APjAAAXbJNT57vGDUIkFIgWZQSmNWJYT+cR4zHFX4Wj22YhjOLGnI5Yi 7hVWFwovLZysoZvQrCVgrHupRuZVZTfgkxnYmCGEwb9cAWWy/f4AWGjQe7yxMdwOIIt3FDrX7t8 H778YRpc8Es8JrokhO/BQl6dv+D37CXDpDJRBSfxoniKY2a9x2HFQ8A== X-Google-Smtp-Source: APXvYqwKk+I4HbuA4RcglkP8o46iI6xbteS+/MuFwJyr/XWMftq/+pw8TuJDIwz+Yidoj+OgCKZAOXQ= X-Received: by 2002:a1f:a1c8:: with SMTP id k191mr6874449vke.77.1559843508489; Thu, 06 Jun 2019 10:51:48 -0700 (PDT) Date: Thu, 6 Jun 2019 10:51:38 -0700 Message-Id: <20190606175146.205269-1-sdf@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.22.0.rc1.311.g5d7573a151-goog Subject: [PATCH bpf-next v2 0/8] bpf: getsockopt and setsockopt hooks From: Stanislav Fomichev To: netdev@vger.kernel.org, bpf@vger.kernel.org Cc: davem@davemloft.net, ast@kernel.org, daniel@iogearbox.net, Stanislav Fomichev Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This series implements two new per-cgroup hooks: getsockopt and setsockopt along with a new sockopt program type. The idea is pretty similar to recently introduced cgroup sysctl hooks, but implementation is simpler (no need to convert to/from strings). What this can be applied to: * move business logic of what tos/priority/etc can be set by containers (either pass or reject) * handle existing options (or introduce new ones) differently by propagating some information in cgroup/socket local storage Compared to a simple syscall/{g,s}etsockopt tracepoint, those hooks are context aware. Meaning, they can access underlying socket and use cgroup and socket local storage. Stanislav Fomichev (8): bpf: implement getsockopt and setsockopt hooks bpf: sync bpf.h to tools/ libbpf: support sockopt hooks selftests/bpf: test sockopt section name selftests/bpf: add sockopt test selftests/bpf: add sockopt test that exercises sk helpers bpf: add sockopt documentation bpftool: support cgroup sockopt Documentation/bpf/index.rst | 1 + Documentation/bpf/prog_cgroup_sockopt.rst | 39 + include/linux/bpf-cgroup.h | 29 + include/linux/bpf.h | 46 ++ include/linux/bpf_types.h | 1 + include/linux/filter.h | 13 + include/uapi/linux/bpf.h | 14 + kernel/bpf/cgroup.c | 277 +++++++ kernel/bpf/core.c | 9 + kernel/bpf/syscall.c | 19 + kernel/bpf/verifier.c | 15 + net/core/filter.c | 4 +- net/socket.c | 18 + .../bpftool/Documentation/bpftool-cgroup.rst | 7 +- .../bpftool/Documentation/bpftool-prog.rst | 2 +- tools/bpf/bpftool/bash-completion/bpftool | 8 +- tools/bpf/bpftool/cgroup.c | 5 +- tools/bpf/bpftool/main.h | 1 + tools/bpf/bpftool/prog.c | 3 +- tools/include/uapi/linux/bpf.h | 14 + tools/lib/bpf/libbpf.c | 5 + tools/lib/bpf/libbpf_probes.c | 1 + tools/testing/selftests/bpf/.gitignore | 2 + tools/testing/selftests/bpf/Makefile | 4 +- .../testing/selftests/bpf/progs/sockopt_sk.c | 77 ++ .../selftests/bpf/test_section_names.c | 10 + tools/testing/selftests/bpf/test_sockopt.c | 773 ++++++++++++++++++ tools/testing/selftests/bpf/test_sockopt_sk.c | 156 ++++ 28 files changed, 1542 insertions(+), 11 deletions(-) create mode 100644 Documentation/bpf/prog_cgroup_sockopt.rst create mode 100644 tools/testing/selftests/bpf/progs/sockopt_sk.c create mode 100644 tools/testing/selftests/bpf/test_sockopt.c create mode 100644 tools/testing/selftests/bpf/test_sockopt_sk.c -- 2.22.0.rc1.311.g5d7573a151-goog