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,URIBL_BLOCKED,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 6EEE2C432C3 for ; Thu, 14 Nov 2019 18:57:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4BDC320723 for ; Thu, 14 Nov 2019 18:57:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573757877; bh=qR3Mp39DqWLnYYIgQmgK8CsuPBngfquTtGIAQABM0KI=; h=From:To:CC:Subject:Date:In-Reply-To:References:List-ID:From; b=KNICbxuHPjo1s00aoxVEvgNWZpkoR2UgIduleMuS2FQMl9WiwoN5BOz9CPhnzSdI7 SRnrhZ4o8p5IzrA/Lrxoud73qgIhVTR9GKx2n53Oq+9vrbyau8bHpXshixeE3Q5gUL DCFVnp6tgQjFpJ1Zo+8SUQZgzkQMRO7Tm2kaNNiI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727295AbfKNS54 convert rfc822-to-8bit (ORCPT ); Thu, 14 Nov 2019 13:57:56 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:50726 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727272AbfKNS5y (ORCPT ); Thu, 14 Nov 2019 13:57:54 -0500 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 xAEIeDFo016537 for ; Thu, 14 Nov 2019 10:57:54 -0800 Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2w8u0tcu8p-7 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 14 Nov 2019 10:57:53 -0800 Received: from 2401:db00:2050:5076:face:0:1f:0 (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Thu, 14 Nov 2019 10:57:46 -0800 Received: by devbig007.ftw2.facebook.com (Postfix, from userid 572438) id 742AD76071B; Thu, 14 Nov 2019 10:57:45 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Alexei Starovoitov Smtp-Origin-Hostname: devbig007.ftw2.facebook.com To: CC: , , , , Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH v4 bpf-next 12/20] selftests/bpf: Add stress test for maximum number of progs Date: Thu, 14 Nov 2019 10:57:12 -0800 Message-ID: <20191114185720.1641606-13-ast@kernel.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191114185720.1641606-1-ast@kernel.org> References: <20191114185720.1641606-1-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=2019-11-14_05:2019-11-14,2019-11-14 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 spamscore=0 suspectscore=1 malwarescore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 bulkscore=0 mlxlogscore=936 impostorscore=0 mlxscore=0 clxscore=1034 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1911140157 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Add stress test for maximum number of attached BPF programs per BPF trampoline. Signed-off-by: Alexei Starovoitov Acked-by: Song Liu --- .../selftests/bpf/prog_tests/fexit_stress.c | 76 +++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/fexit_stress.c diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_stress.c b/tools/testing/selftests/bpf/prog_tests/fexit_stress.c new file mode 100644 index 000000000000..3b9dbf7433f0 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/fexit_stress.c @@ -0,0 +1,76 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 Facebook */ +#include + +/* x86-64 fits 55 JITed and 43 interpreted progs into half page */ +#define CNT 40 + +void test_fexit_stress(void) +{ + char test_skb[128] = {}; + int fexit_fd[CNT] = {}; + int link_fd[CNT] = {}; + __u32 duration = 0; + char error[4096]; + __u32 prog_ret; + int err, i, filter_fd; + + const struct bpf_insn trace_program[] = { + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }; + + struct bpf_load_program_attr load_attr = { + .prog_type = BPF_PROG_TYPE_TRACING, + .license = "GPL", + .insns = trace_program, + .insns_cnt = sizeof(trace_program) / sizeof(struct bpf_insn), + .expected_attach_type = BPF_TRACE_FEXIT, + }; + + const struct bpf_insn skb_program[] = { + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }; + + struct bpf_load_program_attr skb_load_attr = { + .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, + .license = "GPL", + .insns = skb_program, + .insns_cnt = sizeof(skb_program) / sizeof(struct bpf_insn), + }; + + err = libbpf_find_vmlinux_btf_id("bpf_fentry_test1", + load_attr.expected_attach_type); + if (CHECK(err <= 0, "find_vmlinux_btf_id", "failed: %d\n", err)) + goto out; + load_attr.attach_btf_id = err; + + for (i = 0; i < CNT; i++) { + fexit_fd[i] = bpf_load_program_xattr(&load_attr, error, sizeof(error)); + if (CHECK(fexit_fd[i] < 0, "fexit loaded", + "failed: %d errno %d\n", fexit_fd[i], errno)) + goto out; + link_fd[i] = bpf_raw_tracepoint_open(NULL, fexit_fd[i]); + if (CHECK(link_fd[i] < 0, "fexit attach failed", + "prog %d failed: %d err %d\n", i, link_fd[i], errno)) + goto out; + } + + filter_fd = bpf_load_program_xattr(&skb_load_attr, error, sizeof(error)); + if (CHECK(filter_fd < 0, "test_program_loaded", "failed: %d errno %d\n", + filter_fd, errno)) + goto out; + + err = bpf_prog_test_run(filter_fd, 1, test_skb, sizeof(test_skb), 0, + 0, &prog_ret, 0); + close(filter_fd); + CHECK_FAIL(err); +out: + for (i = 0; i < CNT; i++) { + if (link_fd[i]) + close(link_fd[i]); + if (fexit_fd[i]) + close(fexit_fd[i]); + } +} -- 2.23.0