From patchwork Sat Nov 21 02:46:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrii Nakryiko X-Patchwork-Id: 330262 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=-12.0 required=3.0 tests=BAYES_00,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT 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 96BE8C2D0E4 for ; Sat, 21 Nov 2020 02:46:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5425522403 for ; Sat, 21 Nov 2020 02:46:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726913AbgKUCq1 convert rfc822-to-8bit (ORCPT ); Fri, 20 Nov 2020 21:46:27 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:62830 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725785AbgKUCq1 (ORCPT ); Fri, 20 Nov 2020 21:46:27 -0500 Received: from pps.filterd (m0109332.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AL2ewhm018834 for ; Fri, 20 Nov 2020 18:46:26 -0800 Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 34xat44x76-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 20 Nov 2020 18:46:26 -0800 Received: from intmgw005.03.ash8.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Fri, 20 Nov 2020 18:46:25 -0800 Received: by devbig012.ftw2.facebook.com (Postfix, from userid 137359) id 538E72EC9CD8; Fri, 20 Nov 2020 18:46:20 -0800 (PST) From: Andrii Nakryiko To: , , , CC: , Subject: [PATCH bpf-next 0/7] Add kernel modules support for tracing BPF program attachments Date: Fri, 20 Nov 2020 18:46:09 -0800 Message-ID: <20201121024616.1588175-1-andrii@kernel.org> X-Mailer: git-send-email 2.24.1 X-FB-Internal: Safe X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-11-20_17:2020-11-20,2020-11-20 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 impostorscore=0 mlxscore=0 adultscore=0 malwarescore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 phishscore=0 clxscore=1015 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011210019 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Building on top of two previous patch sets ([0] and not yet landed [1]), this patch sets extends kernel and libbpf with support for attaching BTF-powered raw tracepoint (tp_btf) and tracing (fentry/fexit/fmod_ret/lsm) BPF programs to BPF hooks defined in kernel modules. Kernel UAPI for BPF_PROG_LOAD is extended with extra parameter (attach_btf_obj_id) which allows to specify kernel module BTF in which the BTF type is identifed by attach_btf_id.