From patchwork Fri Dec 27 11:06:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michal Rostecki X-Patchwork-Id: 1215681 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.de Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47kmCl6DDcz9sQp for ; Fri, 27 Dec 2019 23:21:55 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727134AbfL0MVv (ORCPT ); Fri, 27 Dec 2019 07:21:51 -0500 Received: from mx2.suse.de ([195.135.220.15]:38860 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726408AbfL0MVu (ORCPT ); Fri, 27 Dec 2019 07:21:50 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id A7DE2B285; Fri, 27 Dec 2019 12:21:48 +0000 (UTC) From: Michal Rostecki To: bpf@vger.kernel.org Cc: Alexei Starovoitov , Daniel Borkmann , Martin KaFai Lau , Song Liu , Yonghong Song , Andrii Nakryiko , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Michal Rostecki Subject: [PATCH bpf-next 0/2] bpftool/libbpf: Add probe for large INSN limit Date: Fri, 27 Dec 2019 12:06:03 +0100 Message-Id: <20191227110605.1757-1-mrostecki@suse.de> X-Mailer: git-send-email 2.16.4 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This series implements a new BPF feature probe which checks for the commit c04c0d2b968a ("bpf: increase complexity limit and maximum program size"), which increases the maximum program size to 1M. It's based on the similar check in Cilium, althogh Cilium is already aiming to use bpftool checks and eventually drop all its custom checks. Examples of outputs: # bpftool feature probe [...] Scanning miscellaneous eBPF features... Large complexity limit and maximum program size (1M) is available # bpftool feature probe macros [...] /*** eBPF misc features ***/ #define HAVE_HAVE_LARGE_INSN_LIMIT # bpftool feature probe -j | jq '.["misc"]' { "have_large_insn_limit": true } Michal Rostecki (2): libbpf: Add probe for large INSN limit bpftool: Add misc secion and probe for large INSN limit tools/bpf/bpftool/feature.c | 18 ++++++++++++++++++ tools/lib/bpf/libbpf.h | 1 + tools/lib/bpf/libbpf.map | 1 + tools/lib/bpf/libbpf_probes.c | 23 +++++++++++++++++++++++ 4 files changed, 43 insertions(+)