From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 6F43DC0044D for ; Wed, 4 Dec 2019 07:02:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 39E752073B for ; Wed, 4 Dec 2019 07:01:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="oG+C0Y+h" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727333AbfLDHA5 (ORCPT ); Wed, 4 Dec 2019 02:00:57 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:27198 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727244AbfLDHAy (ORCPT ); Wed, 4 Dec 2019 02:00:54 -0500 Received: from pps.filterd (m0109334.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xB46rIJh011495 for ; Tue, 3 Dec 2019 23:00:54 -0800 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-type; s=facebook; bh=0LlH/nLl5Dr0wbAqBTCW+ZHkKV0tDv5/l0BIkKZ/fLY=; b=oG+C0Y+hpC33HLnv16ir+7mA2DolqFW7yivtu0gxPmJe8mlOBcbzU10ekWG+G7K+UBP/ bjQerMATsJaa2QA+Umt3JJKAyc2wBlbCnzickEvbBKGJQHWb50owCP/AZ71wXRtzei9B 4rszqujRKCY9rF8Jrpwnb1OP41kgPZYa9BI= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2wp7rnr250-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 03 Dec 2019 23:00:54 -0800 Received: from 2401:db00:2120:81ca:face:0:31:0 (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::f) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Tue, 3 Dec 2019 23:00:52 -0800 Received: by devbig012.ftw2.facebook.com (Postfix, from userid 137359) id 97DFE2EC1853; Tue, 3 Dec 2019 23:00:51 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Andrii Nakryiko Smtp-Origin-Hostname: devbig012.ftw2.facebook.com To: , , , CC: , , Andrii Nakryiko Smtp-Origin-Cluster: ftw2c04 Subject: [RFC PATCH bpf-next 15/16] selftests/bpf: add test validating data section to struct convertion layout Date: Tue, 3 Dec 2019 23:00:14 -0800 Message-ID: <20191204070015.3523523-16-andriin@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191204070015.3523523-1-andriin@fb.com> References: <20191204070015.3523523-1-andriin@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-04_01:2019-12-04,2019-12-03 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 adultscore=0 lowpriorityscore=0 spamscore=0 impostorscore=0 mlxlogscore=935 phishscore=0 suspectscore=8 priorityscore=1501 mlxscore=0 bulkscore=0 malwarescore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912040050 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Add a simple selftests validating datasection-to-struct layour dumping. Global variables are constructed in such a way as to cause both natural and artificial padding (through custom alignment requirement). Signed-off-by: Andrii Nakryiko --- .../selftests/bpf/prog_tests/skeleton.c | 47 +++++++++++++++++++ .../selftests/bpf/progs/test_skeleton.c | 36 ++++++++++++++ 2 files changed, 83 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/skeleton.c create mode 100644 tools/testing/selftests/bpf/progs/test_skeleton.c diff --git a/tools/testing/selftests/bpf/prog_tests/skeleton.c b/tools/testing/selftests/bpf/prog_tests/skeleton.c new file mode 100644 index 000000000000..d65a0203e1df --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/skeleton.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0 +#include + +struct s { + int a; + long long b; +} __attribute__((packed)); + +#include "test_skeleton.skel.h" + +BPF_EMBED_OBJ(skeleton, "test_skeleton.o"); + +void test_skeleton(void) +{ + int duration = 0, err; + struct test_skeleton* skel; + struct test_skeleton__bss *bss; + + skel = test_skeleton__open_and_load(&skeleton_embed); + if (CHECK(!skel, "skel_open", "failed to open skeleton\n")) + return; + + bss = skel->bss; + bss->in1 = 1; + bss->in2 = 2; + bss->in3 = 3; + bss->in4 = 4; + bss->in5.a = 5; + bss->in5.b = 6; + + err = test_skeleton__attach(skel); + if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err)) + goto cleanup; + + /* trigger tracepoint */ + usleep(1); + + CHECK(bss->out1 != 1, "res1", "got %d != exp %d\n", bss->out1, 1); + CHECK(bss->out2 != 2, "res2", "got %lld != exp %d\n", bss->out2, 2); + CHECK(bss->out3 != 3, "res3", "got %d != exp %d\n", (int)bss->out3, 3); + CHECK(bss->out4 != 4, "res4", "got %lld != exp %d\n", bss->out4, 4); + CHECK(bss->out5.a != 5, "res5", "got %d != exp %d\n", bss->out5.a, 5); + CHECK(bss->out5.b != 6, "res6", "got %lld != exp %d\n", bss->out5.b, 6); + +cleanup: + test_skeleton__destroy(skel); +} diff --git a/tools/testing/selftests/bpf/progs/test_skeleton.c b/tools/testing/selftests/bpf/progs/test_skeleton.c new file mode 100644 index 000000000000..303a841c4d1c --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_skeleton.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2017 Facebook + +#include +#include "bpf_helpers.h" + +struct s { + int a; + long long b; +} __attribute__((packed)); + +int in1 = 0; +long long in2 = 0; +char in3 = '\0'; +long long in4 __attribute__((aligned(64))) = 0; +struct s in5 = {}; + +long long out2 = 0; +struct s out5 = {}; +char out3 = 0; +long long out4 = 0; +int out1 = 0; + + +SEC("raw_tp/sys_enter") +int handler(const void *ctx) +{ + out1 = in1; + out2 = in2; + out3 = in3; + out4 = in4; + out5 = in5; + return 0; +} + +char _license[] SEC("license") = "GPL"; -- 2.17.1