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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT 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 8915BC10F00 for ; Thu, 28 Feb 2019 23:19:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 59DFB2075B for ; Thu, 28 Feb 2019 23:19:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729591AbfB1XTI (ORCPT ); Thu, 28 Feb 2019 18:19:08 -0500 Received: from www62.your-server.de ([213.133.104.62]:52334 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728823AbfB1XTI (ORCPT ); Thu, 28 Feb 2019 18:19:08 -0500 Received: from [178.197.248.21] (helo=localhost) by www62.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89_1) (envelope-from ) id 1gzUxC-0000lH-EH; Fri, 01 Mar 2019 00:19:02 +0100 From: Daniel Borkmann To: ast@fb.com Cc: bpf@vger.kernel.org, netdev@vger.kernel.org, joe@wand.net.nz, john.fastabend@gmail.com, tgraf@suug.ch, yhs@fb.com, andriin@fb.com, jakub.kicinski@netronome.com, lmb@cloudflare.com, Daniel Borkmann Subject: [PATCH bpf-next v2 0/7] BPF support for global data Date: Fri, 1 Mar 2019 00:18:22 +0100 Message-Id: <20190228231829.11993-1-daniel@iogearbox.net> X-Mailer: git-send-email 2.9.5 X-Authenticated-Sender: daniel@iogearbox.net X-Virus-Scanned: Clear (ClamAV 0.100.2/25374/Thu Feb 28 11:38:05 2019) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This series is a major rework of previously submitted libbpf patches [0] in order to add global data support for BPF. The kernel has been extended to add proper infrastructure that allows for full .bss/.data/.rodata sections on BPF loader side based upon feedback from LPC discussions [1]. Latter support is then also added into libbpf in this series which allows for more natural C-like programming of BPF programs. For more information on loader, please refer to 'bpf, libbpf: support global data/bss/ rodata sections' patch in this series. Joint work with Joe Stringer. Thanks a lot! v1 -> v2: - Instead of 32-bit static data, implement full global data support. [0] https://patchwork.ozlabs.org/cover/1040290/ [1] http://vger.kernel.org/lpc-bpf2018.html#session-3 Daniel Borkmann (5): bpf: implement lookup-free direct value access bpf: add program side {rd,wr}only support bpf, obj: allow . char as part of the name bpf, libbpf: support global data/bss/rodata sections bpf, selftest: test {rd,wr}only flags and direct value access Joe Stringer (2): bpf, libbpf: refactor relocation handling bpf, selftest: test global data/bss/rodata sections include/linux/bpf.h | 24 ++ include/linux/bpf_verifier.h | 4 + include/uapi/linux/bpf.h | 16 +- kernel/bpf/arraymap.c | 35 +- kernel/bpf/core.c | 3 +- kernel/bpf/disasm.c | 5 +- kernel/bpf/hashtab.c | 2 +- kernel/bpf/local_storage.c | 2 +- kernel/bpf/lpm_trie.c | 2 +- kernel/bpf/queue_stack_maps.c | 3 +- kernel/bpf/syscall.c | 35 +- kernel/bpf/verifier.c | 103 ++++-- tools/bpf/bpftool/xlated_dumper.c | 3 + tools/include/linux/filter.h | 19 +- tools/include/uapi/linux/bpf.h | 16 +- tools/lib/bpf/libbpf.c | 321 ++++++++++++++---- tools/testing/selftests/bpf/bpf_helpers.h | 2 +- .../selftests/bpf/progs/test_global_data.c | 61 ++++ tools/testing/selftests/bpf/test_progs.c | 50 +++ tools/testing/selftests/bpf/test_verifier.c | 40 ++- .../selftests/bpf/verifier/array_access.c | 159 +++++++++ .../bpf/verifier/direct_value_access.c | 170 ++++++++++ 22 files changed, 955 insertions(+), 120 deletions(-) create mode 100644 tools/testing/selftests/bpf/progs/test_global_data.c create mode 100644 tools/testing/selftests/bpf/verifier/direct_value_access.c -- 2.17.1