From patchwork Wed Mar 6 14:47:30 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Cody X-Patchwork-Id: 225513 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 75BD02C02C1 for ; Thu, 7 Mar 2013 01:48:13 +1100 (EST) Received: from localhost ([::1]:36185 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UDFdb-0001LO-NR for incoming@patchwork.ozlabs.org; Wed, 06 Mar 2013 09:48:11 -0500 Received: from eggs.gnu.org ([208.118.235.92]:53761) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UDFd7-00017f-9I for qemu-devel@nongnu.org; Wed, 06 Mar 2013 09:47:47 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UDFcz-0002QH-Ni for qemu-devel@nongnu.org; Wed, 06 Mar 2013 09:47:41 -0500 Received: from mx1.redhat.com ([209.132.183.28]:24387) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UDFcz-0002Q4-GL for qemu-devel@nongnu.org; Wed, 06 Mar 2013 09:47:33 -0500 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r26ElWHk025880 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 6 Mar 2013 09:47:32 -0500 Received: from localhost (ovpn-112-42.phx2.redhat.com [10.3.112.42]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id r26ElUTE011568 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Wed, 6 Mar 2013 09:47:31 -0500 From: Jeff Cody To: qemu-devel@nongnu.org Date: Wed, 6 Mar 2013 09:47:30 -0500 Message-Id: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: kwolf@redhat.com, sw@weilnetz.de, stefanha@redhat.com Subject: [Qemu-devel] [PATCH 2/7] qemu: add castagnoli crc32c checksum algorithm X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This adds the Castagnoli CRC32C algorithm, using the 0x11EDC6F41 polynomial. This is extracted from the linux kernel cryptographic crc32.c module. The algorithm is based on: Castagnoli93: Guy Castagnoli and Stefan Braeuer and Martin Herrman "Optimization of Cyclic Redundancy-Check Codes with 24 and 32 Parity Bits", IEEE Transactions on Communication, Volume 41, Number 6, June 1993 Signed-off-by: Jeff Cody --- include/qemu/crc32c.h | 35 +++++++++++++++ util/Makefile.objs | 1 + util/crc32c.c | 115 ++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 151 insertions(+) create mode 100644 include/qemu/crc32c.h create mode 100644 util/crc32c.c diff --git a/include/qemu/crc32c.h b/include/qemu/crc32c.h new file mode 100644 index 0000000..56d1c3b --- /dev/null +++ b/include/qemu/crc32c.h @@ -0,0 +1,35 @@ +/* + * Castagnoli CRC32C Checksum Algorithm + * + * Polynomial: 0x11EDC6F41 + * + * Castagnoli93: Guy Castagnoli and Stefan Braeuer and Martin Herrman + * "Optimization of Cyclic Redundancy-Check Codes with 24 + * and 32 Parity Bits",IEEE Transactions on Communication, + * Volume 41, Number 6, June 1993 + * + * Copyright (c) 2013 Red Hat, Inc., + * + * Authors: + * Jeff Cody + * + * Based on the Linux kernel cryptographic crc32c module, + * + * Copyright (c) 2004 Cisco Systems, Inc. + * Copyright (c) 2008 Herbert Xu + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + */ + +#ifndef QEMU_CRC32_H +#define QEMU_CRC32_H + +#include "qemu-common.h" + +uint32_t crc32c(uint32_t crc, const uint8_t *data, unsigned int length); + +#endif diff --git a/util/Makefile.objs b/util/Makefile.objs index 495a178..3dd2eda 100644 --- a/util/Makefile.objs +++ b/util/Makefile.objs @@ -8,3 +8,4 @@ util-obj-y += error.o qemu-error.o util-obj-$(CONFIG_POSIX) += compatfd.o util-obj-y += iov.o aes.o qemu-config.o qemu-sockets.o uri.o notify.o util-obj-y += qemu-option.o qemu-progress.o +util-obj-y += crc32c.o diff --git a/util/crc32c.c b/util/crc32c.c new file mode 100644 index 0000000..8866327 --- /dev/null +++ b/util/crc32c.c @@ -0,0 +1,115 @@ +/* + * Castagnoli CRC32C Checksum Algorithm + * + * Polynomial: 0x11EDC6F41 + * + * Castagnoli93: Guy Castagnoli and Stefan Braeuer and Martin Herrman + * "Optimization of Cyclic Redundancy-Check Codes with 24 + * and 32 Parity Bits",IEEE Transactions on Communication, + * Volume 41, Number 6, June 1993 + * + * Copyright (c) 2013 Red Hat, Inc., + * + * Authors: + * Jeff Cody + * + * Based on the Linux kernel cryptographic crc32c module, + * + * Copyright (c) 2004 Cisco Systems, Inc. + * Copyright (c) 2008 Herbert Xu + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + */ + +#include "qemu-common.h" +#include "qemu/crc32c.h" + +/* + * This is the CRC-32C table + * Generated with: + * width = 32 bits + * poly = 0x1EDC6F41 + * reflect input bytes = true + * reflect output bytes = true + */ + +static const uint32_t crc32c_table[256] = { + 0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L, + 0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL, + 0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL, + 0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L, + 0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL, + 0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L, + 0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L, + 0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL, + 0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL, + 0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L, + 0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L, + 0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL, + 0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L, + 0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL, + 0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL, + 0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L, + 0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L, + 0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L, + 0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L, + 0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L, + 0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L, + 0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L, + 0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L, + 0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L, + 0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L, + 0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L, + 0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L, + 0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L, + 0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L, + 0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L, + 0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L, + 0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L, + 0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL, + 0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L, + 0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L, + 0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL, + 0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L, + 0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL, + 0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL, + 0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L, + 0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L, + 0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL, + 0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL, + 0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L, + 0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL, + 0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L, + 0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L, + 0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL, + 0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L, + 0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL, + 0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL, + 0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L, + 0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL, + 0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L, + 0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L, + 0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL, + 0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL, + 0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L, + 0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L, + 0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL, + 0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L, + 0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL, + 0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL, + 0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L +}; + + +uint32_t crc32c(uint32_t crc, const uint8_t *data, unsigned int length) +{ + while (length--) { + crc = crc32c_table[(crc ^ *data++) & 0xFFL] ^ (crc >> 8); + } + return crc^0xffffffff; +} +