From patchwork Wed Nov 6 23:12:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin KaFai Lau X-Patchwork-Id: 1190753 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.b="DD7iKWuq"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 477j3f63YYz9sP4 for ; Thu, 7 Nov 2019 10:12:14 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727315AbfKFXMN (ORCPT ); Wed, 6 Nov 2019 18:12:13 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:43790 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725937AbfKFXMN (ORCPT ); Wed, 6 Nov 2019 18:12:13 -0500 Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xA6NA1ld022394 for ; Wed, 6 Nov 2019 15:12:12 -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=V6b7+K6hHxAHP89Q7cYxIDWvSSbjdGdtxZxFrOEHw3k=; b=DD7iKWuqL+3QQ9ilVcDLYl1BloEBlP99i3EhaCZ025QYh+VLBuOGKej8AAbZIMmdM39S DUkwWsAgHtGMUkp2jsLDYWHfehoLmMS0ffFjP0VcAYOrPs11YCqNO+XuwPBKWRT89i38 CfyL2oIDepotB8fY83RN9jNawbD9cX31pQY= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2w41uj9ukt-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Wed, 06 Nov 2019 15:12:12 -0800 Received: from 2401:db00:2050:5102:face:0:3b:0 (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Wed, 6 Nov 2019 15:12:10 -0800 Received: by devbig005.ftw2.facebook.com (Postfix, from userid 6611) id 3A72E29431A0; Wed, 6 Nov 2019 15:12:10 -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 v2 bpf-next 0/2] bpf: Add array support to btf_struct_access Date: Wed, 6 Nov 2019 15:12:10 -0800 Message-ID: <20191106231210.3615828-1-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=2.50.10434:6.0.95, 18.0.572 definitions=2019-11-06_08:2019-11-06, 2019-11-06 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 bulkscore=0 clxscore=1015 suspectscore=8 priorityscore=1501 spamscore=0 mlxlogscore=848 lowpriorityscore=0 phishscore=0 malwarescore=0 mlxscore=0 adultscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1911060223 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This series adds array support to btf_struct_access(). Please see individual patch for details. v2: - Fix a divide-by-zero when there is empty array in a struct (e.g. "__u8 __cloned_offset[0];" in skbuff) - Add 'static' to a global var in prog_tests/kfree_skb.c Martin KaFai Lau (2): bpf: Add array support to btf_struct_access bpf: Add cb access in kfree_skb test kernel/bpf/btf.c | 187 +++++++++++++++--- .../selftests/bpf/prog_tests/kfree_skb.c | 54 +++-- tools/testing/selftests/bpf/progs/kfree_skb.c | 25 ++- 3 files changed, 220 insertions(+), 46 deletions(-)