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=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=ham 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 40542C31E43 for ; Mon, 10 Jun 2019 16:34:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 151C020859 for ; Mon, 10 Jun 2019 16:34:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="VR3Q2lkJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728146AbfFJQeZ (ORCPT ); Mon, 10 Jun 2019 12:34:25 -0400 Received: from mail-vs1-f73.google.com ([209.85.217.73]:41929 "EHLO mail-vs1-f73.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728139AbfFJQeZ (ORCPT ); Mon, 10 Jun 2019 12:34:25 -0400 Received: by mail-vs1-f73.google.com with SMTP id a200so3223106vsd.8 for ; Mon, 10 Jun 2019 09:34:24 -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=WTJ0CLWWhp91boKJRzsc1QxdiFix806yxAsK82lwins=; b=VR3Q2lkJUDVvdBszcGrz/TkrHsxBfNsCPlb1XzX2K/bP0YDNw+BSHtov/YBzq4wHLq oZFJsM7TAc2hP3fhvQA0C4KzpepgQ2CSu9vhSA1klixENWXv74gKfvFWu7hpLq2v9w8Z PEDzD1CF+Ao/0Hfu5lSGpgjy/htcZp7OQlO+nV8gxnATyntN/WolqQ5kFoZmK51mDIIq Nit7k8Yk2DILCs76GPSMY1J91xxQlPPeVR3VRcd06o/73uz8RI8Oci6+SGOVrGMoENlU 97QIxxu2kQuzUC0CLhB3PMLt18YGs4WblXaYAAxFlQkD64mBX1fV7DF+a3XzRkDL+mXM yLPg== 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=WTJ0CLWWhp91boKJRzsc1QxdiFix806yxAsK82lwins=; b=H9ZcyBkT2VaB2p94TZO0f21+RRwm+F649/nJlwwsCvrZwk5Vi+v4/v5avS1GeuUmGo +9NO2Xnwh6QhnYkMCnMJlV+MHRV4YaZAnPGPWGn7qU6lAdzYK2K6E54u+UGMhXjKVNba 2L16bODqq6sNYCVXTLGnrbvpw9cdMsnbLC4UlZe5uzszUio6DJYiMr5GIeHt2yqNpJrb +77WkGGjBC0TZvV1LUyQp7zq9QCFzwMvCGQIOascVKvbwLpED/qGNZDWSJluivoejwp3 SQbl8lP6p8SvD7yoMkj/fxTxkda8EVMl2aqtoYWJzaXqCHRWYynTo1HUw9WKJ/+24nv+ ATng== X-Gm-Message-State: APjAAAUV0su+6ZRpDxhco5inArd2sPjzNjWb/+bJLkU5ZADNcndPaUW/ rIMVsTM97XhaUquwKGMlQC7479E= X-Google-Smtp-Source: APXvYqyTH5vQBy+TeDL2fFHLQxIvj7F6k90vf/dWf+3yvjjbN3VGdnuj4qUzSpY2+s9gzggvTb6wUBk= X-Received: by 2002:a9f:2372:: with SMTP id 105mr4190313uae.85.1560184464300; Mon, 10 Jun 2019 09:34:24 -0700 (PDT) Date: Mon, 10 Jun 2019 09:34:13 -0700 Message-Id: <20190610163421.208126-1-sdf@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.22.0.rc2.383.gf4fbbf30c2-goog Subject: [PATCH bpf-next v4 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: 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 (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 | 45 + include/linux/bpf_types.h | 1 + include/linux/filter.h | 13 + include/uapi/linux/bpf.h | 13 + kernel/bpf/cgroup.c | 262 ++++++ kernel/bpf/core.c | 9 + kernel/bpf/syscall.c | 19 + kernel/bpf/verifier.c | 15 + net/core/filter.c | 2 +- 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 | 67 ++ .../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, 1514 insertions(+), 10 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.rc2.383.gf4fbbf30c2-goog