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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 EC5A1FA372C for ; Thu, 7 Nov 2019 05:47:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C233D21D7E for ; Thu, 7 Nov 2019 05:47:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573105637; bh=G0Yr8DKGhNdifJlFAJDuNXdk8g3RVi6KLLSurcm4m50=; h=From:To:CC:Subject:Date:In-Reply-To:References:List-ID:From; b=nKEEYOhABySy/0NVhMwBpNi858vzRUpt205Iyk9yMLskp7lDW0vFe4LICu7yMQ3MY RZsIQkyXVY7hz0u8guKMwTzR35ZJR6vh93+JZEUCyDr3tAPMBJI1GH8TF5p8sNPKfb Jr/+31Nd2bDw+nmcRRmqUd1cUo++4eIPehGKLcOM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726885AbfKGFrQ convert rfc822-to-8bit (ORCPT ); Thu, 7 Nov 2019 00:47:16 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:35728 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726496AbfKGFrP (ORCPT ); Thu, 7 Nov 2019 00:47:15 -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 xA75hGlJ016600 for ; Wed, 6 Nov 2019 21:47:14 -0800 Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2w41vxuh9v-13 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Wed, 06 Nov 2019 21:47:14 -0800 Received: from 2401:db00:2120:81ca:face:0:31:0 (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::130) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Wed, 6 Nov 2019 21:47:02 -0800 Received: by devbig007.ftw2.facebook.com (Postfix, from userid 572438) id 9212D760BC0; Wed, 6 Nov 2019 21:47:00 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Alexei Starovoitov Smtp-Origin-Hostname: devbig007.ftw2.facebook.com To: CC: , , , , Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH v2 bpf-next 08/17] selftests/bpf: Add fexit tests for BPF trampoline Date: Wed, 6 Nov 2019 21:46:35 -0800 Message-ID: <20191107054644.1285697-9-ast@kernel.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191107054644.1285697-1-ast@kernel.org> References: <20191107054644.1285697-1-ast@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-11-06_09:2019-11-06,2019-11-06 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 impostorscore=0 clxscore=1034 mlxscore=0 suspectscore=1 bulkscore=0 phishscore=0 adultscore=0 mlxlogscore=886 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1911070059 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Add fexit tests for BPF trampoline that checks kernel functions with up to 6 arguments of different sizes and their return values. Signed-off-by: Alexei Starovoitov --- .../selftests/bpf/prog_tests/fexit_test.c | 64 ++++++++++++ .../testing/selftests/bpf/progs/fexit_test.c | 98 +++++++++++++++++++ 2 files changed, 162 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/fexit_test.c create mode 100644 tools/testing/selftests/bpf/progs/fexit_test.c diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_test.c b/tools/testing/selftests/bpf/prog_tests/fexit_test.c new file mode 100644 index 000000000000..f99013222c74 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/fexit_test.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 Facebook */ +#include + +void test_fexit_test(void) +{ + struct bpf_prog_load_attr attr = { + .file = "./fexit_test.o", + }; + + char prog_name[] = "fexit/bpf_fentry_testX"; + struct bpf_object *obj = NULL, *pkt_obj; + int err, pkt_fd, kfree_skb_fd, i; + struct bpf_link *link[6] = {}; + struct bpf_program *prog[6]; + __u32 duration, retval; + struct bpf_map *data_map; + const int zero = 0; + u64 result[6]; + + err = bpf_prog_load("./test_pkt_access.o", BPF_PROG_TYPE_SCHED_CLS, + &pkt_obj, &pkt_fd); + if (CHECK(err, "prog_load sched cls", "err %d errno %d\n", err, errno)) + return; + err = bpf_prog_load_xattr(&attr, &obj, &kfree_skb_fd); + if (CHECK(err, "prog_load fail", "err %d errno %d\n", err, errno)) + goto close_prog; + + for (i = 0; i < 6; i++) { + prog_name[sizeof(prog_name) - 2] = '1' + i; + prog[i] = bpf_object__find_program_by_title(obj, prog_name); + if (CHECK(!prog[i], "find_prog", "prog %s not found\n", prog_name)) + goto close_prog; + link[i] = bpf_program__attach_trace(prog[i]); + if (CHECK(IS_ERR(link[i]), "attach_trace", "failed to link\n")) + goto close_prog; + } + data_map = bpf_object__find_map_by_name(obj, "fexit_te.bss"); + if (CHECK(!data_map, "find_data_map", "data map not found\n")) + goto close_prog; + + err = bpf_prog_test_run(pkt_fd, 1, &pkt_v6, sizeof(pkt_v6), + NULL, NULL, &retval, &duration); + CHECK(err || retval, "ipv6", + "err %d errno %d retval %d duration %d\n", + err, errno, retval, duration); + + err = bpf_map_lookup_elem(bpf_map__fd(data_map), &zero, &result); + if (CHECK(err, "get_result", + "failed to get output data: %d\n", err)) + goto close_prog; + + for (i = 0; i < 6; i++) + if (CHECK(result[i] != 1, "result", "bpf_fentry_test%d failed err %ld\n", + i + 1, result[i])) + goto close_prog; + +close_prog: + for (i = 0; i < 6; i++) + if (!IS_ERR_OR_NULL(link[i])) + bpf_link__destroy(link[i]); + bpf_object__close(obj); + bpf_object__close(pkt_obj); +} diff --git a/tools/testing/selftests/bpf/progs/fexit_test.c b/tools/testing/selftests/bpf/progs/fexit_test.c new file mode 100644 index 000000000000..8b98b1a51784 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/fexit_test.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 Facebook */ +#include +#include "bpf_helpers.h" + +char _license[] SEC("license") = "GPL"; + +struct test1 { + ks32 a; + ks32 ret; +}; +static volatile __u64 test1_result; +SEC("fexit/bpf_fentry_test1") +int test1(struct test1 *ctx) +{ + test1_result = ctx->a == 1 && ctx->ret == 2; + return 0; +} + +struct test2 { + ks32 a; + ku64 b; + ks32 ret; +}; +static volatile __u64 test2_result; +SEC("fexit/bpf_fentry_test2") +int test2(struct test2 *ctx) +{ + test2_result = ctx->a == 2 && ctx->b == 3 && ctx->ret == 5; + return 0; +} + +struct test3 { + ks8 a; + ks32 b; + ku64 c; + ks32 ret; +}; +static volatile __u64 test3_result; +SEC("fexit/bpf_fentry_test3") +int test3(struct test3 *ctx) +{ + test3_result = ctx->a == 4 && ctx->b == 5 && ctx->c == 6 && + ctx->ret == 15; + return 0; +} + +struct test4 { + void *a; + ks8 b; + ks32 c; + ku64 d; + ks32 ret; +}; +static volatile __u64 test4_result; +SEC("fexit/bpf_fentry_test4") +int test4(struct test4 *ctx) +{ + test4_result = ctx->a == (void *)7 && ctx->b == 8 && ctx->c == 9 && + ctx->d == 10 && ctx->ret == 34; + return 0; +} + +struct test5 { + ku64 a; + void *b; + ks16 c; + ks32 d; + ku64 e; + ks32 ret; +}; +static volatile __u64 test5_result; +SEC("fexit/bpf_fentry_test5") +int test5(struct test5 *ctx) +{ + test5_result = ctx->a == 11 && ctx->b == (void *)12 && ctx->c == 13 && + ctx->d == 14 && ctx->e == 15 && ctx->ret == 65; + return 0; +} + +struct test6 { + ku64 a; + void *b; + ks16 c; + ks32 d; + void *e; + ks64 f; + ks32 ret; +}; +static volatile __u64 test6_result; +SEC("fexit/bpf_fentry_test6") +int test6(struct test6 *ctx) +{ + test6_result = ctx->a == 16 && ctx->b == (void *)17 && ctx->c == 18 && + ctx->d == 19 && ctx->e == (void *)20 && ctx->f == 21 && + ctx->ret == 111; + return 0; +} -- 2.23.0