From patchwork Tue Apr 7 05:09:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Ignatov X-Patchwork-Id: 1267182 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: incoming-bpf@patchwork.ozlabs.org Delivered-To: patchwork-incoming-bpf@bilbo.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=bpf-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=NP++ywlN; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48xFr31Y90z9sQt for ; Tue, 7 Apr 2020 15:11:31 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726761AbgDGFLa (ORCPT ); Tue, 7 Apr 2020 01:11:30 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:42974 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726399AbgDGFLa (ORCPT ); Tue, 7 Apr 2020 01:11:30 -0400 Received: from pps.filterd (m0044012.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0375BS8W026500 for ; Mon, 6 Apr 2020 22:11:29 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=a8YM6assk3NxfE3+ekPhSI0ysUvfXI8Gd1mI32iwHtE=; b=NP++ywlNjStEI5auuFSA5PDr0UOy2DLjB0VYi0CRPmhN4L3SnCnzKv4AO7DRRaPu+hCo iOX6JA1tYV/vq3wXFjypvp93e1iYbbfepveWRwYist+ziidxQMV3v7etTN07olivHLKp PtJEtgaPtAPDg5U36KFVILJHVfuWtygS9Fo= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 307a266yf5-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 06 Apr 2020 22:11:29 -0700 Received: from intmgw004.06.prn3.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1847.3; Mon, 6 Apr 2020 22:11:24 -0700 Received: by dev082.prn2.facebook.com (Postfix, from userid 572249) id 51FF83700D26; Mon, 6 Apr 2020 22:11:18 -0700 (PDT) Smtp-Origin-Hostprefix: dev From: Andrey Ignatov Smtp-Origin-Hostname: dev082.prn2.facebook.com To: CC: Andrey Ignatov , , , , Smtp-Origin-Cluster: prn2c23 Subject: [PATCH bpf 2/2] selftests/bpf: Add test for bpf_get_link_xdp_id Date: Mon, 6 Apr 2020 22:09:46 -0700 Message-ID: <2a9a6d1ce33b91ccc1aa3de6dba2d309f2062811.1586236080.git.rdna@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: References: MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.676 definitions=2020-04-07_01:2020-04-07,2020-04-06 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 mlxlogscore=524 malwarescore=0 suspectscore=15 priorityscore=1501 lowpriorityscore=0 phishscore=0 spamscore=0 adultscore=0 impostorscore=0 clxscore=1015 mlxscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004070042 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Add xdp_info selftest that makes sure that bpf_get_link_xdp_id returns valid prog_id for different input modes: * w/ and w/o flags when no program is attached; * w/ and w/o flags when one program is attached. Signed-off-by: Andrey Ignatov --- .../selftests/bpf/prog_tests/xdp_info.c | 68 +++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/xdp_info.c diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_info.c b/tools/testing/selftests/bpf/prog_tests/xdp_info.c new file mode 100644 index 000000000000..d2d7a283d72f --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/xdp_info.c @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include + +#define IFINDEX_LO 1 + +void test_xdp_info(void) +{ + __u32 len = sizeof(struct bpf_prog_info), duration = 0, prog_id; + const char *file = "./xdp_dummy.o"; + struct bpf_prog_info info = {}; + struct bpf_object *obj; + int err, prog_fd; + + /* Get prog_id for XDP_ATTACHED_NONE mode */ + + err = bpf_get_link_xdp_id(IFINDEX_LO, &prog_id, 0); + if (CHECK(err, "get_xdp_none", "errno=%d\n", errno)) + return; + if (CHECK(prog_id, "prog_id_none", "unexpected prog_id=%u\n", prog_id)) + return; + + err = bpf_get_link_xdp_id(IFINDEX_LO, &prog_id, XDP_FLAGS_SKB_MODE); + if (CHECK(err, "get_xdp_none_skb", "errno=%d\n", errno)) + return; + if (CHECK(prog_id, "prog_id_none_skb", "unexpected prog_id=%u\n", + prog_id)) + return; + + /* Setup prog */ + + err = bpf_prog_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd); + if (CHECK_FAIL(err)) + return; + + err = bpf_obj_get_info_by_fd(prog_fd, &info, &len); + if (CHECK(err, "get_prog_info", "errno=%d\n", errno)) + goto out_close; + + err = bpf_set_link_xdp_fd(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE); + if (CHECK(err, "set_xdp_skb", "errno=%d\n", errno)) + goto out_close; + + /* Get prog_id for single prog mode */ + + err = bpf_get_link_xdp_id(IFINDEX_LO, &prog_id, 0); + if (CHECK(err, "get_xdp", "errno=%d\n", errno)) + goto out; + if (CHECK(prog_id != info.id, "prog_id", "prog_id not available\n")) + goto out; + + err = bpf_get_link_xdp_id(IFINDEX_LO, &prog_id, XDP_FLAGS_SKB_MODE); + if (CHECK(err, "get_xdp_skb", "errno=%d\n", errno)) + goto out; + if (CHECK(prog_id != info.id, "prog_id_skb", "prog_id not available\n")) + goto out; + + err = bpf_get_link_xdp_id(IFINDEX_LO, &prog_id, XDP_FLAGS_DRV_MODE); + if (CHECK(err, "get_xdp_drv", "errno=%d\n", errno)) + goto out; + if (CHECK(prog_id, "prog_id_drv", "unexpected prog_id=%u\n", prog_id)) + goto out; + +out: + bpf_set_link_xdp_fd(IFINDEX_LO, -1, 0); +out_close: + bpf_object__close(obj); +}