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=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 669C4C432C3 for ; Thu, 14 Nov 2019 18:57:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3FA7320725 for ; Thu, 14 Nov 2019 18:57:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573757861; bh=zKtD8tcwUx4jEN8XcFZix/zgb9OyDV+K3ZiQna6u3Mo=; h=From:To:CC:Subject:Date:In-Reply-To:References:List-ID:From; b=Og1HjvHs+McYXAQR5MLg/o4tU4xB/bgldUPZ8s5m+xxRi11GXUjGI9R/qt1wJKbtp hOcSn355bSuGmNNCwvbOvtEK58S6y7DVzrfp8iKqXQ0NVFube/55xSvFBZoJU5qVfk bEm0EaAJhVB4vvdCYXvc+9tTcytIo6Wkrrt15Kjk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727126AbfKNS5k convert rfc822-to-8bit (ORCPT ); Thu, 14 Nov 2019 13:57:40 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:3648 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727059AbfKNS5k (ORCPT ); Thu, 14 Nov 2019 13:57:40 -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 xAEIhShT013417 for ; Thu, 14 Nov 2019 10:57:39 -0800 Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2w8rgdnqat-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 14 Nov 2019 10:57:38 -0800 Received: from 2401:db00:2050:5102:face:0:3b:0 (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 15.1.1713.5; Thu, 14 Nov 2019 10:57:37 -0800 Received: by devbig007.ftw2.facebook.com (Postfix, from userid 572438) id 48EC076071B; Thu, 14 Nov 2019 10:57:37 -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 08/20] bpf: Add kernel test functions for fentry testing Date: Thu, 14 Nov 2019 10:57:08 -0800 Message-ID: <20191114185720.1641606-9-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 lowpriorityscore=0 mlxlogscore=999 mlxscore=0 suspectscore=1 clxscore=1034 priorityscore=1501 phishscore=0 spamscore=0 bulkscore=0 adultscore=0 malwarescore=0 impostorscore=0 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 few kernel functions with various number of arguments, their types and sizes for BPF trampoline testing to cover different calling conventions. Signed-off-by: Alexei Starovoitov Acked-by: Song Liu --- net/bpf/test_run.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index 0be4497cb832..62933279fbba 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -105,6 +105,40 @@ static int bpf_test_finish(const union bpf_attr *kattr, return err; } +/* Integer types of various sizes and pointer combinations cover variety of + * architecture dependent calling conventions. 7+ can be supported in the + * future. + */ +int noinline bpf_fentry_test1(int a) +{ + return a + 1; +} + +int noinline bpf_fentry_test2(int a, u64 b) +{ + return a + b; +} + +int noinline bpf_fentry_test3(char a, int b, u64 c) +{ + return a + b + c; +} + +int noinline bpf_fentry_test4(void *a, char b, int c, u64 d) +{ + return (long)a + b + c + d; +} + +int noinline bpf_fentry_test5(u64 a, void *b, short c, int d, u64 e) +{ + return a + (long)b + c + d + e; +} + +int noinline bpf_fentry_test6(u64 a, void *b, short c, int d, void *e, u64 f) +{ + return a + (long)b + c + d + (long)e + f; +} + static void *bpf_test_init(const union bpf_attr *kattr, u32 size, u32 headroom, u32 tailroom) { @@ -122,6 +156,13 @@ static void *bpf_test_init(const union bpf_attr *kattr, u32 size, kfree(data); return ERR_PTR(-EFAULT); } + if (bpf_fentry_test1(1) != 2 || + bpf_fentry_test2(2, 3) != 5 || + bpf_fentry_test3(4, 5, 6) != 15 || + bpf_fentry_test4((void *)7, 8, 9, 10) != 34 || + bpf_fentry_test5(11, (void *)12, 13, 14, 15) != 65 || + bpf_fentry_test6(16, (void *)17, 18, 19, (void *)20, 21) != 111) + return ERR_PTR(-EFAULT); return data; } -- 2.23.0