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 E3791C48BE3 for ; Thu, 27 Jun 2019 20:38:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BB78E20B7C for ; Thu, 27 Jun 2019 20:38:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="im9YE5Ax" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726571AbfF0Ui7 (ORCPT ); Thu, 27 Jun 2019 16:38:59 -0400 Received: from mail-pf1-f201.google.com ([209.85.210.201]:38127 "EHLO mail-pf1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726497AbfF0Ui6 (ORCPT ); Thu, 27 Jun 2019 16:38:58 -0400 Received: by mail-pf1-f201.google.com with SMTP id e25so2298023pfn.5 for ; Thu, 27 Jun 2019 13:38:58 -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=IyeyMj4roDD0kDM67GID8k8aBjlB7wnRUksBjx9pO6o=; b=im9YE5Ax1IW3TiAXzjnhZUwpFA3CLsu0O+o+pmS2WAChzV0brY8wqf4rrA2X9VY3G9 2ASu1MOXrn2DbI1qIV0HCEe76a8sff5bcXJQQmGDltrVtHHLoOES72z0JlGrl7RLZiXO GR8psTsBy6loGsTn5hbYfI0nrd53wTW2p2tEBHQ/b81EjTEi3Q2yPV4Iik2jrM+tfsym 8nKIcDFJ8nICfKirQjsB69UQBK31ZYCm7Bwzv99iPorlCXru8ozc2EvX8EUsMG4tyPtb Iuq7ZxM9Y5lAX9y3kLVUNVEcpvIba2b03rhrDijhngsiGyMska08G/u6aKjkB/5k/MwO CAxA== 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=IyeyMj4roDD0kDM67GID8k8aBjlB7wnRUksBjx9pO6o=; b=eMotxGC3ib0NRGntZCJBk2a8tVmFVRbTqM40sOD4RSMN0UqKpsodYNz2sefqLLjj7B 89yZT0PdB0D/E6So8CzWRUMdgfKrFZhAO/DiJlwGLMfPUwIZaWuePGv1K1TxWN4J8des 665Vqe3nMTJt7vbwdJmygJRvZ3KrUlzxfXCEgcr7+/MFTBd7kb7ubVG/vYXCDcBoON/7 nQAccTWbsKkXItp1NM8XhJnRlYdqPcO7uBJuN/JY/pnMyYMFYUsEwjsdhj6KIMxliLgy SVG3JpFMFZN24J1FmgKLubLyYOUvoMeESvQ3m09v7aT11tONq7DuJNy2sRkPTMRd/5eP gStQ== X-Gm-Message-State: APjAAAWMtnmKDzDgDBwHEZzw6fr9DdGSik/Mor9bZWlXBe5CK/aZKU/l Ovsn9BuwgGTV9Lf27TaSAEJWPV07sjYXmsVET2DKW1CwxeADT8Yhu/Pc69fNBKmIlXwPz0BYLyq yYn919p+edeF/7erV4riGTGu9GcfStF94Z40NhYg0cAV6qgEdXlPnKA== X-Google-Smtp-Source: APXvYqycdK4YR0sCWfvO6YrXYvC0KrHBmL+yfD7s7GFgiCKWCMMrtTO9QS1AcKPy7G5GyvPd4GEgU9o= X-Received: by 2002:a63:18d:: with SMTP id 135mr5636361pgb.62.1561667937778; Thu, 27 Jun 2019 13:38:57 -0700 (PDT) Date: Thu, 27 Jun 2019 13:38:46 -0700 Message-Id: <20190627203855.10515-1-sdf@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.22.0.410.gd8fdbe21b5-goog Subject: [PATCH bpf-next v9 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: 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. v9: * allow overwriting setsocktop arguments (Alexei Starovoitov) (see individual changes for more changelog details) 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 | 93 ++ include/linux/bpf-cgroup.h | 45 + include/linux/bpf.h | 2 + include/linux/bpf_types.h | 1 + include/linux/filter.h | 10 + include/uapi/linux/bpf.h | 14 + kernel/bpf/cgroup.c | 333 ++++++ kernel/bpf/core.c | 9 + kernel/bpf/syscall.c | 19 + kernel/bpf/verifier.c | 8 + net/core/filter.c | 2 +- net/socket.c | 30 + .../bpftool/Documentation/bpftool-cgroup.rst | 7 +- .../bpftool/Documentation/bpftool-prog.rst | 3 +- tools/bpf/bpftool/bash-completion/bpftool | 9 +- 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 | 71 ++ .../testing/selftests/bpf/progs/sockopt_sk.c | 111 ++ .../selftests/bpf/test_section_names.c | 10 + tools/testing/selftests/bpf/test_sockopt.c | 1021 +++++++++++++++++ .../selftests/bpf/test_sockopt_multi.c | 374 ++++++ tools/testing/selftests/bpf/test_sockopt_sk.c | 214 ++++ 30 files changed, 2415 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