From patchwork Tue Jan 14 22:43:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin KaFai Lau X-Patchwork-Id: 1223104 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=pass (p=none dis=none) header.from=fb.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=fb.com header.i=@fb.com header.a=rsa-sha256 header.s=facebook header.b=OGcajhWN; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47y59Q1Tn9z9sR1 for ; Wed, 15 Jan 2020 09:44:10 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728862AbgANWoE (ORCPT ); Tue, 14 Jan 2020 17:44:04 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:3816 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728808AbgANWoE (ORCPT ); Tue, 14 Jan 2020 17:44:04 -0500 Received: from pps.filterd (m0109333.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 00EMf4m5024529 for ; Tue, 14 Jan 2020 14:44:03 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=facebook; bh=Jv/VhNZ8ABSGPShN5dnCdYgIamQhgkzjl0EizyqxjPQ=; b=OGcajhWNxzJNIlV8uzOAbd/8nYkr9ywYZVpHbHD8AlYNwFHOgE+okJPBkGwnoW91TaJf EpDJ23aj+fn1gotBfP4Y/jnirm92e7b2vnhdhzY96BBUWY/BgsMy7rSpAYw0Atrc2OzX oiv2yNAtcRcCJNQFb3+94kwo6yEegQ63ikA= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2xhftutcnb-6 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 14 Jan 2020 14:44:03 -0800 Received: from intmgw001.06.prn3.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Tue, 14 Jan 2020 14:44:02 -0800 Received: by devbig005.ftw2.facebook.com (Postfix, from userid 6611) id EAED629438DC; Tue, 14 Jan 2020 14:43:58 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Martin KaFai Lau Smtp-Origin-Hostname: devbig005.ftw2.facebook.com To: CC: Alexei Starovoitov , Daniel Borkmann , David Miller , , Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH bpf-next 0/5] bpftool: Support dumping a map with btf_vmlinux_value_type_id Date: Tue, 14 Jan 2020 14:43:58 -0800 Message-ID: <20200114224358.3027079-1-kafai@fb.com> X-Mailer: git-send-email 2.17.1 X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-01-14_06:2020-01-14,2020-01-14 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 spamscore=0 malwarescore=0 impostorscore=0 mlxscore=0 bulkscore=0 priorityscore=1501 adultscore=0 suspectscore=13 lowpriorityscore=0 mlxlogscore=536 clxscore=1015 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-2001140174 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org When a map is storing a kernel's struct, its map_info->btf_vmlinux_value_type_id is set. The first map type supporting it is BPF_MAP_TYPE_STRUCT_OPS. This series adds support to dump this kind of map with BTF. The first two patches are bug fixes which only applicable to in bpf-next. Please see individual patches for details. Martin KaFai Lau (5): bpftool: Fix a leak of btf object bpftool: Fix missing BTF output for json during map dump libbpf: Expose bpf_find_kernel_btf to libbpf_internal.h bpftool: Add struct_ops map name bpftool: Support dumping a map with btf_vmlinux_value_type_id tools/bpf/bpftool/map.c | 84 ++++++++++++++++++--------------- tools/lib/bpf/libbpf.c | 3 +- tools/lib/bpf/libbpf_internal.h | 1 + 3 files changed, 49 insertions(+), 39 deletions(-)