From patchwork Sat Apr 28 11:29:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Kodanev X-Patchwork-Id: 906088 X-Patchwork-Delegate: jan.stancek@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=lists.linux.it (client-ip=213.254.12.146; helo=picard.linux.it; envelope-from=ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=oracle.com header.i=@oracle.com header.b="K7uFW/O/"; dkim-atps=neutral Received: from picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40Y7dz63sCz9s08 for ; Sat, 28 Apr 2018 21:20:52 +1000 (AEST) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id 0CE6D3E6338 for ; Sat, 28 Apr 2018 13:20:49 +0200 (CEST) X-Original-To: ltp@lists.linux.it Delivered-To: ltp@picard.linux.it Received: from in-2.smtp.seeweb.it (in-2.smtp.seeweb.it [217.194.8.2]) by picard.linux.it (Postfix) with ESMTP id 27E9C3E6328 for ; Sat, 28 Apr 2018 13:20:47 +0200 (CEST) Received: from userp2120.oracle.com (userp2120.oracle.com [156.151.31.85]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by in-2.smtp.seeweb.it (Postfix) with ESMTPS id 5F0256008DA for ; Sat, 28 Apr 2018 13:20:46 +0200 (CEST) Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w3SBGZxM162663; Sat, 28 Apr 2018 11:20:39 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id; s=corp-2017-10-26; bh=ria6eMXP2n/FE+6LJMYdfWf/1wMbiGsA4e3X6sSo/w0=; b=K7uFW/O/uMQxEYlWAnJKO0MXrnORrMsVPdqBtWJiOj83GrmQ8V0zX8m+WkTNTjL/SJqv rMzUab9BBjGnZyLjW8URn0gKubVjDOcoMXYdccocNRvMLUyNNuDFhHXfVdb90laMhtCr a/b0TEufQ1xVhzdt2UDa2YqVejG8t0RouVwZfe27krk/f/vuqMLYIWbVZOntpHq+2lJA aJk4O8NHVJvpcEX7rmSGThX3EkXc1tL38NeP1I6FH907smBZ1gZPmKIdhUXv32Qy7CwM ubzDyF3Dc/+51aoyJKssu+oDUh7SrfROxIqrUAUO56RBGM1Gep0aXM6H7pw0HDWgffdD 1A== Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by userp2120.oracle.com with ESMTP id 2hmhmf8jjd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 28 Apr 2018 11:20:39 +0000 Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w3SBKclO002499 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 28 Apr 2018 11:20:38 GMT Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id w3SBKbIi004911; Sat, 28 Apr 2018 11:20:38 GMT Received: from ak.ru.oracle.com (/10.162.80.29) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sat, 28 Apr 2018 04:20:37 -0700 From: Alexey Kodanev To: ltp@lists.linux.it Date: Sat, 28 Apr 2018 14:29:55 +0300 Message-Id: <1524914997-27080-1-git-send-email-alexey.kodanev@oracle.com> X-Mailer: git-send-email 1.7.1 X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8876 signatures=668698 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1804280109 X-Virus-Scanned: clamav-milter 0.99.2 at in-2.smtp.seeweb.it X-Virus-Status: Clean X-Spam-Status: No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, SPF_HELO_PASS, SPF_PASS autolearn=disabled version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on in-2.smtp.seeweb.it Subject: [LTP] [PATCH v3 1/3] lib/tst_checksum: add crc32c checksum X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.18 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it Sender: "ltp" It will be used to make a SCTP packet in the test. Signed-off-by: Alexey Kodanev --- v3: use SPDX License-Identifier v2: As suggested by Cyril: * updated the docs, added section 2.2.25 * added 'tst_' prefix * changed type 'int' to 'size_t' for the buffer length doc/test-writing-guidelines.txt | 6 +++ include/tst_checksum.h | 16 ++++++++ lib/tst_checksum.c | 81 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 103 insertions(+), 0 deletions(-) create mode 100644 include/tst_checksum.h create mode 100644 lib/tst_checksum.c diff --git a/doc/test-writing-guidelines.txt b/doc/test-writing-guidelines.txt index cbbfe6c..8e405a0 100644 --- a/doc/test-writing-guidelines.txt +++ b/doc/test-writing-guidelines.txt @@ -1366,6 +1366,12 @@ For reference to tainted kernels, see kernel documentation: Documentation/admin-guide/tainted-kernels.rst or https://www.kernel.org/doc/html/latest/admin-guide/tainted-kernels.html +2.2.25 Checksums +^^^^^^^^^^^^^^^^ + +CRC32c checksum generation is supported by LTP. In order to use it, the +test should include "tst_checksum.h" header, then can call tst_crc32c(). + 2.3 Writing a testcase in shell ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ diff --git a/include/tst_checksum.h b/include/tst_checksum.h new file mode 100644 index 0000000..4f43115 --- /dev/null +++ b/include/tst_checksum.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 + * Copyright (c) 2018 Oracle and/or its affiliates. All Rights Reserved. + */ + +#ifndef TST_CHECKSUM_H__ +#define TST_CHECKSUM_H__ + +#include +#include + +/* + * Generates CRC32c checksum. + */ +uint32_t tst_crc32c(uint8_t *buf, size_t buf_len); + +#endif diff --git a/lib/tst_checksum.c b/lib/tst_checksum.c new file mode 100644 index 0000000..9aaf9d4 --- /dev/null +++ b/lib/tst_checksum.c @@ -0,0 +1,81 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2018 Oracle and/or its affiliates. All Rights Reserved. */ + +#include "tst_checksum.h" + +static const uint32_t crc32c_table[] = { + 0x00000000, 0xf26b8303, 0xe13b70f7, 0x1350f3f4, + 0xc79a971f, 0x35f1141c, 0x26a1e7e8, 0xd4ca64eb, + 0x8ad958cf, 0x78b2dbcc, 0x6be22838, 0x9989ab3b, + 0x4d43cfd0, 0xbf284cd3, 0xac78bf27, 0x5e133c24, + 0x105ec76f, 0xe235446c, 0xf165b798, 0x030e349b, + 0xd7c45070, 0x25afd373, 0x36ff2087, 0xc494a384, + 0x9a879fa0, 0x68ec1ca3, 0x7bbcef57, 0x89d76c54, + 0x5d1d08bf, 0xaf768bbc, 0xbc267848, 0x4e4dfb4b, + 0x20bd8ede, 0xd2d60ddd, 0xc186fe29, 0x33ed7d2a, + 0xe72719c1, 0x154c9ac2, 0x061c6936, 0xf477ea35, + 0xaa64d611, 0x580f5512, 0x4b5fa6e6, 0xb93425e5, + 0x6dfe410e, 0x9f95c20d, 0x8cc531f9, 0x7eaeb2fa, + 0x30e349b1, 0xc288cab2, 0xd1d83946, 0x23b3ba45, + 0xf779deae, 0x05125dad, 0x1642ae59, 0xe4292d5a, + 0xba3a117e, 0x4851927d, 0x5b016189, 0xa96ae28a, + 0x7da08661, 0x8fcb0562, 0x9c9bf696, 0x6ef07595, + 0x417b1dbc, 0xb3109ebf, 0xa0406d4b, 0x522bee48, + 0x86e18aa3, 0x748a09a0, 0x67dafa54, 0x95b17957, + 0xcba24573, 0x39c9c670, 0x2a993584, 0xd8f2b687, + 0x0c38d26c, 0xfe53516f, 0xed03a29b, 0x1f682198, + 0x5125dad3, 0xa34e59d0, 0xb01eaa24, 0x42752927, + 0x96bf4dcc, 0x64d4cecf, 0x77843d3b, 0x85efbe38, + 0xdbfc821c, 0x2997011f, 0x3ac7f2eb, 0xc8ac71e8, + 0x1c661503, 0xee0d9600, 0xfd5d65f4, 0x0f36e6f7, + 0x61c69362, 0x93ad1061, 0x80fde395, 0x72966096, + 0xa65c047d, 0x5437877e, 0x4767748a, 0xb50cf789, + 0xeb1fcbad, 0x197448ae, 0x0a24bb5a, 0xf84f3859, + 0x2c855cb2, 0xdeeedfb1, 0xcdbe2c45, 0x3fd5af46, + 0x7198540d, 0x83f3d70e, 0x90a324fa, 0x62c8a7f9, + 0xb602c312, 0x44694011, 0x5739b3e5, 0xa55230e6, + 0xfb410cc2, 0x092a8fc1, 0x1a7a7c35, 0xe811ff36, + 0x3cdb9bdd, 0xceb018de, 0xdde0eb2a, 0x2f8b6829, + 0x82f63b78, 0x709db87b, 0x63cd4b8f, 0x91a6c88c, + 0x456cac67, 0xb7072f64, 0xa457dc90, 0x563c5f93, + 0x082f63b7, 0xfa44e0b4, 0xe9141340, 0x1b7f9043, + 0xcfb5f4a8, 0x3dde77ab, 0x2e8e845f, 0xdce5075c, + 0x92a8fc17, 0x60c37f14, 0x73938ce0, 0x81f80fe3, + 0x55326b08, 0xa759e80b, 0xb4091bff, 0x466298fc, + 0x1871a4d8, 0xea1a27db, 0xf94ad42f, 0x0b21572c, + 0xdfeb33c7, 0x2d80b0c4, 0x3ed04330, 0xccbbc033, + 0xa24bb5a6, 0x502036a5, 0x4370c551, 0xb11b4652, + 0x65d122b9, 0x97baa1ba, 0x84ea524e, 0x7681d14d, + 0x2892ed69, 0xdaf96e6a, 0xc9a99d9e, 0x3bc21e9d, + 0xef087a76, 0x1d63f975, 0x0e330a81, 0xfc588982, + 0xb21572c9, 0x407ef1ca, 0x532e023e, 0xa145813d, + 0x758fe5d6, 0x87e466d5, 0x94b49521, 0x66df1622, + 0x38cc2a06, 0xcaa7a905, 0xd9f75af1, 0x2b9cd9f2, + 0xff56bd19, 0x0d3d3e1a, 0x1e6dcdee, 0xec064eed, + 0xc38d26c4, 0x31e6a5c7, 0x22b65633, 0xd0ddd530, + 0x0417b1db, 0xf67c32d8, 0xe52cc12c, 0x1747422f, + 0x49547e0b, 0xbb3ffd08, 0xa86f0efc, 0x5a048dff, + 0x8ecee914, 0x7ca56a17, 0x6ff599e3, 0x9d9e1ae0, + 0xd3d3e1ab, 0x21b862a8, 0x32e8915c, 0xc083125f, + 0x144976b4, 0xe622f5b7, 0xf5720643, 0x07198540, + 0x590ab964, 0xab613a67, 0xb831c993, 0x4a5a4a90, + 0x9e902e7b, 0x6cfbad78, 0x7fab5e8c, 0x8dc0dd8f, + 0xe330a81a, 0x115b2b19, 0x020bd8ed, 0xf0605bee, + 0x24aa3f05, 0xd6c1bc06, 0xc5914ff2, 0x37faccf1, + 0x69e9f0d5, 0x9b8273d6, 0x88d28022, 0x7ab90321, + 0xae7367ca, 0x5c18e4c9, 0x4f48173d, 0xbd23943e, + 0xf36e6f75, 0x0105ec76, 0x12551f82, 0xe03e9c81, + 0x34f4f86a, 0xc69f7b69, 0xd5cf889d, 0x27a40b9e, + 0x79b737ba, 0x8bdcb4b9, 0x988c474d, 0x6ae7c44e, + 0xbe2da0a5, 0x4c4623a6, 0x5f16d052, 0xad7d5351, +}; + +uint32_t tst_crc32c(uint8_t *buf, size_t buf_len) +{ + uint32_t crc = 0xffffffff; + + while (buf_len--) + crc = crc32c_table[(crc ^ (*buf++)) & 0xff] ^ (crc >> 8); + + return ~crc; +}