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=-10.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,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 B6922C31E5E for ; Wed, 19 Jun 2019 17:00:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8E583217F4 for ; Wed, 19 Jun 2019 17:00:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="XaBnIKcR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726479AbfFSRAA (ORCPT ); Wed, 19 Jun 2019 13:00:00 -0400 Received: from mail-yw1-f74.google.com ([209.85.161.74]:33157 "EHLO mail-yw1-f74.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726191AbfFSRAA (ORCPT ); Wed, 19 Jun 2019 13:00:00 -0400 Received: by mail-yw1-f74.google.com with SMTP id d135so148456ywd.0 for ; Wed, 19 Jun 2019 10:00:00 -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=Wge+u5ZOZB6ul9wJMu3woe8hUr/62OhCT5ISxGP6XaM=; b=XaBnIKcRhQyFKt1NafIQRmeIT2dhr2iOIr4+7w0/5k02DC7F6PticelKK5XJlewXnL qvT5eLezM5oQrjM0vkuXsSSTwgCYU1K+kacU4+ji+v89H5Wyyi5Udcp+FcK7d8RUvUl8 UnNaen92/Wg/kfMz069GL5IdEvXWOavuDa0YKiMsQFz0kPuXaL8xxnYWmuditW7nWpyb SKTs1owy+Nza/f83+b59M4a3PpknZ0UKpQt4PjP3k06ftJEQg8T+3cp/N5w/+47vFeVK Z2KG2ehrOTGFpWD9dtAcx2QuyH4Z+3wWPCpH+0y/2EAnC9MDrMwczHb07GQgRlZ5XewI 9H6A== 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=Wge+u5ZOZB6ul9wJMu3woe8hUr/62OhCT5ISxGP6XaM=; b=ttuZPhUZqhdXRseMC6blhuw1EDhBRF+4cwrlYen/UqhefY8raJY/sJF00wABSYeZKa TTChLUsoiV72sRvMTbn2/J9pJW5oQqirD0YjFq7o0WAdYv2Bh/moUyepZWRkLrqtYo7u YLtbJAy3Q69ygObblD0QT+NgZlVaSZoqqhExlKiKE5CP+gICBU6EqANzVspIP6WtKP1V d2vCLC4qMAukrjfx4VUADSNFPGT2fsxVTQ2QfWUOfV3OIslUALX1cZBSAnw2/krPDPnC PaeExU+Ch+VtZWJdjZe3hr0KHvHlXw8eszHNr5B08207rigJbLrUayeK6+S4XN//vCvk DOsw== X-Gm-Message-State: APjAAAVD4SHpdKNevfOVrEC59ydfmUufngrC3c59Dgprlxjy6vTH6b2a zylkQ4UjWQW1m5LxmCr6mzFRzJo= X-Google-Smtp-Source: APXvYqza2edhpzvlAoLtZ+V41xL1NNpnIxk75jSZt9rpi7JO5QNQs4NRynT/dhlJMU0IhgBAEioXgNo= X-Received: by 2002:a25:3b48:: with SMTP id i69mr43895345yba.222.1560963599730; Wed, 19 Jun 2019 09:59:59 -0700 (PDT) Date: Wed, 19 Jun 2019 09:59:48 -0700 Message-Id: <20190619165957.235580-1-sdf@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.22.0.410.gd8fdbe21b5-goog Subject: [PATCH bpf-next v7 0/9] 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: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@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 (9): 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 selftests/bpf: add sockopt test that exercises BPF_F_ALLOW_MULTI bpf: add sockopt documentation bpftool: support cgroup sockopt Documentation/bpf/index.rst | 1 + Documentation/bpf/prog_cgroup_sockopt.rst | 82 ++ include/linux/bpf-cgroup.h | 43 + include/linux/bpf.h | 2 + include/linux/bpf_types.h | 1 + include/linux/filter.h | 14 + include/uapi/linux/bpf.h | 14 + kernel/bpf/cgroup.c | 317 +++++++ kernel/bpf/core.c | 9 + kernel/bpf/syscall.c | 19 + kernel/bpf/verifier.c | 13 + net/core/filter.c | 2 +- net/socket.c | 16 + .../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 | 3 + tools/testing/selftests/bpf/Makefile | 6 +- .../selftests/bpf/progs/sockopt_multi.c | 53 ++ .../testing/selftests/bpf/progs/sockopt_sk.c | 91 ++ .../selftests/bpf/test_section_names.c | 10 + tools/testing/selftests/bpf/test_sockopt.c | 892 ++++++++++++++++++ .../selftests/bpf/test_sockopt_multi.c | 276 ++++++ tools/testing/selftests/bpf/test_sockopt_sk.c | 185 ++++ 30 files changed, 2085 insertions(+), 10 deletions(-) create mode 100644 Documentation/bpf/prog_cgroup_sockopt.rst create mode 100644 tools/testing/selftests/bpf/progs/sockopt_multi.c 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_multi.c create mode 100644 tools/testing/selftests/bpf/test_sockopt_sk.c -- 2.22.0.410.gd8fdbe21b5-goog