linux/lib/crc32test.c
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   1/*
   2 * Aug 8, 2011 Bob Pearson with help from Joakim Tjernlund and George Spelvin
   3 * cleaned up code to current version of sparse and added the slicing-by-8
   4 * algorithm to the closely similar existing slicing-by-4 algorithm.
   5 *
   6 * Oct 15, 2000 Matt Domsch <Matt_Domsch@dell.com>
   7 * Nicer crc32 functions/docs submitted by linux@horizon.com.  Thanks!
   8 * Code was from the public domain, copyright abandoned.  Code was
   9 * subsequently included in the kernel, thus was re-licensed under the
  10 * GNU GPL v2.
  11 *
  12 * Oct 12, 2000 Matt Domsch <Matt_Domsch@dell.com>
  13 * Same crc32 function was used in 5 other places in the kernel.
  14 * I made one version, and deleted the others.
  15 * There are various incantations of crc32().  Some use a seed of 0 or ~0.
  16 * Some xor at the end with ~0.  The generic crc32() function takes
  17 * seed as an argument, and doesn't xor at the end.  Then individual
  18 * users can do whatever they need.
  19 *   drivers/net/smc9194.c uses seed ~0, doesn't xor with ~0.
  20 *   fs/jffs2 uses seed 0, doesn't xor with ~0.
  21 *   fs/partitions/efi.c uses seed ~0, xor's with ~0.
  22 *
  23 * This source code is licensed under the GNU General Public License,
  24 * Version 2.  See the file COPYING for more details.
  25 */
  26
  27#include <linux/crc32.h>
  28#include <linux/module.h>
  29#include <linux/sched.h>
  30
  31#include "crc32defs.h"
  32
  33/* 4096 random bytes */
  34static u8 const __aligned(8) test_buf[] __initconst =
  35{
  36        0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30,
  37        0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4,
  38        0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60,
  39        0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c,
  40        0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4,
  41        0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a,
  42        0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a,
  43        0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4,
  44        0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9,
  45        0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4,
  46        0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca,
  47        0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61,
  48        0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e,
  49        0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 0x7a,
  50        0x8d, 0x07, 0x63, 0xdb, 0x40, 0xe9, 0x0b, 0x6f,
  51        0xad, 0x97, 0xf1, 0xed, 0xd0, 0x1e, 0x26, 0xfd,
  52        0xbf, 0xb7, 0xc8, 0x04, 0x94, 0xf8, 0x8b, 0x8c,
  53        0xf1, 0xab, 0x7a, 0xd4, 0xdd, 0xf3, 0xe8, 0x88,
  54        0xc3, 0xed, 0x17, 0x8a, 0x9b, 0x40, 0x0d, 0x53,
  55        0x62, 0x12, 0x03, 0x5f, 0x1b, 0x35, 0x32, 0x1f,
  56        0xb4, 0x7b, 0x93, 0x78, 0x0d, 0xdb, 0xce, 0xa4,
  57        0xc0, 0x47, 0xd5, 0xbf, 0x68, 0xe8, 0x5d, 0x74,
  58        0x8f, 0x8e, 0x75, 0x1c, 0xb2, 0x4f, 0x9a, 0x60,
  59        0xd1, 0xbe, 0x10, 0xf4, 0x5c, 0xa1, 0x53, 0x09,
  60        0xa5, 0xe0, 0x09, 0x54, 0x85, 0x5c, 0xdc, 0x07,
  61        0xe7, 0x21, 0x69, 0x7b, 0x8a, 0xfd, 0x90, 0xf1,
  62        0x22, 0xd0, 0xb4, 0x36, 0x28, 0xe6, 0xb8, 0x0f,
  63        0x39, 0xde, 0xc8, 0xf3, 0x86, 0x60, 0x34, 0xd2,
  64        0x5e, 0xdf, 0xfd, 0xcf, 0x0f, 0xa9, 0x65, 0xf0,
  65        0xd5, 0x4d, 0x96, 0x40, 0xe3, 0xdf, 0x3f, 0x95,
  66        0x5a, 0x39, 0x19, 0x93, 0xf4, 0x75, 0xce, 0x22,
  67        0x00, 0x1c, 0x93, 0xe2, 0x03, 0x66, 0xf4, 0x93,
  68        0x73, 0x86, 0x81, 0x8e, 0x29, 0x44, 0x48, 0x86,
  69        0x61, 0x7c, 0x48, 0xa3, 0x43, 0xd2, 0x9c, 0x8d,
  70        0xd4, 0x95, 0xdd, 0xe1, 0x22, 0x89, 0x3a, 0x40,
  71        0x4c, 0x1b, 0x8a, 0x04, 0xa8, 0x09, 0x69, 0x8b,
  72        0xea, 0xc6, 0x55, 0x8e, 0x57, 0xe6, 0x64, 0x35,
  73        0xf0, 0xc7, 0x16, 0x9f, 0x5d, 0x5e, 0x86, 0x40,
  74        0x46, 0xbb, 0xe5, 0x45, 0x88, 0xfe, 0xc9, 0x63,
  75        0x15, 0xfb, 0xf5, 0xbd, 0x71, 0x61, 0xeb, 0x7b,
  76        0x78, 0x70, 0x07, 0x31, 0x03, 0x9f, 0xb2, 0xc8,
  77        0xa7, 0xab, 0x47, 0xfd, 0xdf, 0xa0, 0x78, 0x72,
  78        0xa4, 0x2a, 0xe4, 0xb6, 0xba, 0xc0, 0x1e, 0x86,
  79        0x71, 0xe6, 0x3d, 0x18, 0x37, 0x70, 0xe6, 0xff,
  80        0xe0, 0xbc, 0x0b, 0x22, 0xa0, 0x1f, 0xd3, 0xed,
  81        0xa2, 0x55, 0x39, 0xab, 0xa8, 0x13, 0x73, 0x7c,
  82        0x3f, 0xb2, 0xd6, 0x19, 0xac, 0xff, 0x99, 0xed,
  83        0xe8, 0xe6, 0xa6, 0x22, 0xe3, 0x9c, 0xf1, 0x30,
  84        0xdc, 0x01, 0x0a, 0x56, 0xfa, 0xe4, 0xc9, 0x99,
  85        0xdd, 0xa8, 0xd8, 0xda, 0x35, 0x51, 0x73, 0xb4,
  86        0x40, 0x86, 0x85, 0xdb, 0x5c, 0xd5, 0x85, 0x80,
  87        0x14, 0x9c, 0xfd, 0x98, 0xa9, 0x82, 0xc5, 0x37,
  88        0xff, 0x32, 0x5d, 0xd0, 0x0b, 0xfa, 0xdc, 0x04,
  89        0x5e, 0x09, 0xd2, 0xca, 0x17, 0x4b, 0x1a, 0x8e,
  90        0x15, 0xe1, 0xcc, 0x4e, 0x52, 0x88, 0x35, 0xbd,
  91        0x48, 0xfe, 0x15, 0xa0, 0x91, 0xfd, 0x7e, 0x6c,
  92        0x0e, 0x5d, 0x79, 0x1b, 0x81, 0x79, 0xd2, 0x09,
  93        0x34, 0x70, 0x3d, 0x81, 0xec, 0xf6, 0x24, 0xbb,
  94        0xfb, 0xf1, 0x7b, 0xdf, 0x54, 0xea, 0x80, 0x9b,
  95        0xc7, 0x99, 0x9e, 0xbd, 0x16, 0x78, 0x12, 0x53,
  96        0x5e, 0x01, 0xa7, 0x4e, 0xbd, 0x67, 0xe1, 0x9b,
  97        0x4c, 0x0e, 0x61, 0x45, 0x97, 0xd2, 0xf0, 0x0f,
  98        0xfe, 0x15, 0x08, 0xb7, 0x11, 0x4c, 0xe7, 0xff,
  99        0x81, 0x53, 0xff, 0x91, 0x25, 0x38, 0x7e, 0x40,
 100        0x94, 0xe5, 0xe0, 0xad, 0xe6, 0xd9, 0x79, 0xb6,
 101        0x92, 0xc9, 0xfc, 0xde, 0xc3, 0x1a, 0x23, 0xbb,
 102        0xdd, 0xc8, 0x51, 0x0c, 0x3a, 0x72, 0xfa, 0x73,
 103        0x6f, 0xb7, 0xee, 0x61, 0x39, 0x03, 0x01, 0x3f,
 104        0x7f, 0x94, 0x2e, 0x2e, 0xba, 0x3a, 0xbb, 0xb4,
 105        0xfa, 0x6a, 0x17, 0xfe, 0xea, 0xef, 0x5e, 0x66,
 106        0x97, 0x3f, 0x32, 0x3d, 0xd7, 0x3e, 0xb1, 0xf1,
 107        0x6c, 0x14, 0x4c, 0xfd, 0x37, 0xd3, 0x38, 0x80,
 108        0xfb, 0xde, 0xa6, 0x24, 0x1e, 0xc8, 0xca, 0x7f,
 109        0x3a, 0x93, 0xd8, 0x8b, 0x18, 0x13, 0xb2, 0xe5,
 110        0xe4, 0x93, 0x05, 0x53, 0x4f, 0x84, 0x66, 0xa7,
 111        0x58, 0x5c, 0x7b, 0x86, 0x52, 0x6d, 0x0d, 0xce,
 112        0xa4, 0x30, 0x7d, 0xb6, 0x18, 0x9f, 0xeb, 0xff,
 113        0x22, 0xbb, 0x72, 0x29, 0xb9, 0x44, 0x0b, 0x48,
 114        0x1e, 0x84, 0x71, 0x81, 0xe3, 0x6d, 0x73, 0x26,
 115        0x92, 0xb4, 0x4d, 0x2a, 0x29, 0xb8, 0x1f, 0x72,
 116        0xed, 0xd0, 0xe1, 0x64, 0x77, 0xea, 0x8e, 0x88,
 117        0x0f, 0xef, 0x3f, 0xb1, 0x3b, 0xad, 0xf9, 0xc9,
 118        0x8b, 0xd0, 0xac, 0xc6, 0xcc, 0xa9, 0x40, 0xcc,
 119        0x76, 0xf6, 0x3b, 0x53, 0xb5, 0x88, 0xcb, 0xc8,
 120        0x37, 0xf1, 0xa2, 0xba, 0x23, 0x15, 0x99, 0x09,
 121        0xcc, 0xe7, 0x7a, 0x3b, 0x37, 0xf7, 0x58, 0xc8,
 122        0x46, 0x8c, 0x2b, 0x2f, 0x4e, 0x0e, 0xa6, 0x5c,
 123        0xea, 0x85, 0x55, 0xba, 0x02, 0x0e, 0x0e, 0x48,
 124        0xbc, 0xe1, 0xb1, 0x01, 0x35, 0x79, 0x13, 0x3d,
 125        0x1b, 0xc0, 0x53, 0x68, 0x11, 0xe7, 0x95, 0x0f,
 126        0x9d, 0x3f, 0x4c, 0x47, 0x7b, 0x4d, 0x1c, 0xae,
 127        0x50, 0x9b, 0xcb, 0xdd, 0x05, 0x8d, 0x9a, 0x97,
 128        0xfd, 0x8c, 0xef, 0x0c, 0x1d, 0x67, 0x73, 0xa8,
 129        0x28, 0x36, 0xd5, 0xb6, 0x92, 0x33, 0x40, 0x75,
 130        0x0b, 0x51, 0xc3, 0x64, 0xba, 0x1d, 0xc2, 0xcc,
 131        0xee, 0x7d, 0x54, 0x0f, 0x27, 0x69, 0xa7, 0x27,
 132        0x63, 0x30, 0x29, 0xd9, 0xc8, 0x84, 0xd8, 0xdf,
 133        0x9f, 0x68, 0x8d, 0x04, 0xca, 0xa6, 0xc5, 0xc7,
 134        0x7a, 0x5c, 0xc8, 0xd1, 0xcb, 0x4a, 0xec, 0xd0,
 135        0xd8, 0x20, 0x69, 0xc5, 0x17, 0xcd, 0x78, 0xc8,
 136        0x75, 0x23, 0x30, 0x69, 0xc9, 0xd4, 0xea, 0x5c,
 137        0x4f, 0x6b, 0x86, 0x3f, 0x8b, 0xfe, 0xee, 0x44,
 138        0xc9, 0x7c, 0xb7, 0xdd, 0x3e, 0xe5, 0xec, 0x54,
 139        0x03, 0x3e, 0xaa, 0x82, 0xc6, 0xdf, 0xb2, 0x38,
 140        0x0e, 0x5d, 0xb3, 0x88, 0xd9, 0xd3, 0x69, 0x5f,
 141        0x8f, 0x70, 0x8a, 0x7e, 0x11, 0xd9, 0x1e, 0x7b,
 142        0x38, 0xf1, 0x42, 0x1a, 0xc0, 0x35, 0xf5, 0xc7,
 143        0x36, 0x85, 0xf5, 0xf7, 0xb8, 0x7e, 0xc7, 0xef,
 144        0x18, 0xf1, 0x63, 0xd6, 0x7a, 0xc6, 0xc9, 0x0e,
 145        0x4d, 0x69, 0x4f, 0x84, 0xef, 0x26, 0x41, 0x0c,
 146        0xec, 0xc7, 0xe0, 0x7e, 0x3c, 0x67, 0x01, 0x4c,
 147        0x62, 0x1a, 0x20, 0x6f, 0xee, 0x47, 0x4d, 0xc0,
 148        0x99, 0x13, 0x8d, 0x91, 0x4a, 0x26, 0xd4, 0x37,
 149        0x28, 0x90, 0x58, 0x75, 0x66, 0x2b, 0x0a, 0xdf,
 150        0xda, 0xee, 0x92, 0x25, 0x90, 0x62, 0x39, 0x9e,
 151        0x44, 0x98, 0xad, 0xc1, 0x88, 0xed, 0xe4, 0xb4,
 152        0xaf, 0xf5, 0x8c, 0x9b, 0x48, 0x4d, 0x56, 0x60,
 153        0x97, 0x0f, 0x61, 0x59, 0x9e, 0xa6, 0x27, 0xfe,
 154        0xc1, 0x91, 0x15, 0x38, 0xb8, 0x0f, 0xae, 0x61,
 155        0x7d, 0x26, 0x13, 0x5a, 0x73, 0xff, 0x1c, 0xa3,
 156        0x61, 0x04, 0x58, 0x48, 0x55, 0x44, 0x11, 0xfe,
 157        0x15, 0xca, 0xc3, 0xbd, 0xca, 0xc5, 0xb4, 0x40,
 158        0x5d, 0x1b, 0x7f, 0x39, 0xb5, 0x9c, 0x35, 0xec,
 159        0x61, 0x15, 0x32, 0x32, 0xb8, 0x4e, 0x40, 0x9f,
 160        0x17, 0x1f, 0x0a, 0x4d, 0xa9, 0x91, 0xef, 0xb7,
 161        0xb0, 0xeb, 0xc2, 0x83, 0x9a, 0x6c, 0xd2, 0x79,
 162        0x43, 0x78, 0x5e, 0x2f, 0xe5, 0xdd, 0x1a, 0x3c,
 163        0x45, 0xab, 0x29, 0x40, 0x3a, 0x37, 0x5b, 0x6f,
 164        0xd7, 0xfc, 0x48, 0x64, 0x3c, 0x49, 0xfb, 0x21,
 165        0xbe, 0xc3, 0xff, 0x07, 0xfb, 0x17, 0xe9, 0xc9,
 166        0x0c, 0x4c, 0x5c, 0x15, 0x9e, 0x8e, 0x22, 0x30,
 167        0x0a, 0xde, 0x48, 0x7f, 0xdb, 0x0d, 0xd1, 0x2b,
 168        0x87, 0x38, 0x9e, 0xcc, 0x5a, 0x01, 0x16, 0xee,
 169        0x75, 0x49, 0x0d, 0x30, 0x01, 0x34, 0x6a, 0xb6,
 170        0x9a, 0x5a, 0x2a, 0xec, 0xbb, 0x48, 0xac, 0xd3,
 171        0x77, 0x83, 0xd8, 0x08, 0x86, 0x4f, 0x48, 0x09,
 172        0x29, 0x41, 0x79, 0xa1, 0x03, 0x12, 0xc4, 0xcd,
 173        0x90, 0x55, 0x47, 0x66, 0x74, 0x9a, 0xcc, 0x4f,
 174        0x35, 0x8c, 0xd6, 0x98, 0xef, 0xeb, 0x45, 0xb9,
 175        0x9a, 0x26, 0x2f, 0x39, 0xa5, 0x70, 0x6d, 0xfc,
 176        0xb4, 0x51, 0xee, 0xf4, 0x9c, 0xe7, 0x38, 0x59,
 177        0xad, 0xf4, 0xbc, 0x46, 0xff, 0x46, 0x8e, 0x60,
 178        0x9c, 0xa3, 0x60, 0x1d, 0xf8, 0x26, 0x72, 0xf5,
 179        0x72, 0x9d, 0x68, 0x80, 0x04, 0xf6, 0x0b, 0xa1,
 180        0x0a, 0xd5, 0xa7, 0x82, 0x3a, 0x3e, 0x47, 0xa8,
 181        0x5a, 0xde, 0x59, 0x4f, 0x7b, 0x07, 0xb3, 0xe9,
 182        0x24, 0x19, 0x3d, 0x34, 0x05, 0xec, 0xf1, 0xab,
 183        0x6e, 0x64, 0x8f, 0xd3, 0xe6, 0x41, 0x86, 0x80,
 184        0x70, 0xe3, 0x8d, 0x60, 0x9c, 0x34, 0x25, 0x01,
 185        0x07, 0x4d, 0x19, 0x41, 0x4e, 0x3d, 0x5c, 0x7e,
 186        0xa8, 0xf5, 0xcc, 0xd5, 0x7b, 0xe2, 0x7d, 0x3d,
 187        0x49, 0x86, 0x7d, 0x07, 0xb7, 0x10, 0xe3, 0x35,
 188        0xb8, 0x84, 0x6d, 0x76, 0xab, 0x17, 0xc6, 0x38,
 189        0xb4, 0xd3, 0x28, 0x57, 0xad, 0xd3, 0x88, 0x5a,
 190        0xda, 0xea, 0xc8, 0x94, 0xcc, 0x37, 0x19, 0xac,
 191        0x9c, 0x9f, 0x4b, 0x00, 0x15, 0xc0, 0xc8, 0xca,
 192        0x1f, 0x15, 0xaa, 0xe0, 0xdb, 0xf9, 0x2f, 0x57,
 193        0x1b, 0x24, 0xc7, 0x6f, 0x76, 0x29, 0xfb, 0xed,
 194        0x25, 0x0d, 0xc0, 0xfe, 0xbd, 0x5a, 0xbf, 0x20,
 195        0x08, 0x51, 0x05, 0xec, 0x71, 0xa3, 0xbf, 0xef,
 196        0x5e, 0x99, 0x75, 0xdb, 0x3c, 0x5f, 0x9a, 0x8c,
 197        0xbb, 0x19, 0x5c, 0x0e, 0x93, 0x19, 0xf8, 0x6a,
 198        0xbc, 0xf2, 0x12, 0x54, 0x2f, 0xcb, 0x28, 0x64,
 199        0x88, 0xb3, 0x92, 0x0d, 0x96, 0xd1, 0xa6, 0xe4,
 200        0x1f, 0xf1, 0x4d, 0xa4, 0xab, 0x1c, 0xee, 0x54,
 201        0xf2, 0xad, 0x29, 0x6d, 0x32, 0x37, 0xb2, 0x16,
 202        0x77, 0x5c, 0xdc, 0x2e, 0x54, 0xec, 0x75, 0x26,
 203        0xc6, 0x36, 0xd9, 0x17, 0x2c, 0xf1, 0x7a, 0xdc,
 204        0x4b, 0xf1, 0xe2, 0xd9, 0x95, 0xba, 0xac, 0x87,
 205        0xc1, 0xf3, 0x8e, 0x58, 0x08, 0xd8, 0x87, 0x60,
 206        0xc9, 0xee, 0x6a, 0xde, 0xa4, 0xd2, 0xfc, 0x0d,
 207        0xe5, 0x36, 0xc4, 0x5c, 0x52, 0xb3, 0x07, 0x54,
 208        0x65, 0x24, 0xc1, 0xb1, 0xd1, 0xb1, 0x53, 0x13,
 209        0x31, 0x79, 0x7f, 0x05, 0x76, 0xeb, 0x37, 0x59,
 210        0x15, 0x2b, 0xd1, 0x3f, 0xac, 0x08, 0x97, 0xeb,
 211        0x91, 0x98, 0xdf, 0x6c, 0x09, 0x0d, 0x04, 0x9f,
 212        0xdc, 0x3b, 0x0e, 0x60, 0x68, 0x47, 0x23, 0x15,
 213        0x16, 0xc6, 0x0b, 0x35, 0xf8, 0x77, 0xa2, 0x78,
 214        0x50, 0xd4, 0x64, 0x22, 0x33, 0xff, 0xfb, 0x93,
 215        0x71, 0x46, 0x50, 0x39, 0x1b, 0x9c, 0xea, 0x4e,
 216        0x8d, 0x0c, 0x37, 0xe5, 0x5c, 0x51, 0x3a, 0x31,
 217        0xb2, 0x85, 0x84, 0x3f, 0x41, 0xee, 0xa2, 0xc1,
 218        0xc6, 0x13, 0x3b, 0x54, 0x28, 0xd2, 0x18, 0x37,
 219        0xcc, 0x46, 0x9f, 0x6a, 0x91, 0x3d, 0x5a, 0x15,
 220        0x3c, 0x89, 0xa3, 0x61, 0x06, 0x7d, 0x2e, 0x78,
 221        0xbe, 0x7d, 0x40, 0xba, 0x2f, 0x95, 0xb1, 0x2f,
 222        0x87, 0x3b, 0x8a, 0xbe, 0x6a, 0xf4, 0xc2, 0x31,
 223        0x74, 0xee, 0x91, 0xe0, 0x23, 0xaa, 0x5d, 0x7f,
 224        0xdd, 0xf0, 0x44, 0x8c, 0x0b, 0x59, 0x2b, 0xfc,
 225        0x48, 0x3a, 0xdf, 0x07, 0x05, 0x38, 0x6c, 0xc9,
 226        0xeb, 0x18, 0x24, 0x68, 0x8d, 0x58, 0x98, 0xd3,
 227        0x31, 0xa3, 0xe4, 0x70, 0x59, 0xb1, 0x21, 0xbe,
 228        0x7e, 0x65, 0x7d, 0xb8, 0x04, 0xab, 0xf6, 0xe4,
 229        0xd7, 0xda, 0xec, 0x09, 0x8f, 0xda, 0x6d, 0x24,
 230        0x07, 0xcc, 0x29, 0x17, 0x05, 0x78, 0x1a, 0xc1,
 231        0xb1, 0xce, 0xfc, 0xaa, 0x2d, 0xe7, 0xcc, 0x85,
 232        0x84, 0x84, 0x03, 0x2a, 0x0c, 0x3f, 0xa9, 0xf8,
 233        0xfd, 0x84, 0x53, 0x59, 0x5c, 0xf0, 0xd4, 0x09,
 234        0xf0, 0xd2, 0x6c, 0x32, 0x03, 0xb0, 0xa0, 0x8c,
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 447        0x7a, 0xbb, 0x61, 0x82, 0xfe, 0x71, 0x89, 0xb2,
 448        0x22, 0x7c, 0x8e, 0x83, 0x04, 0xce, 0xf6, 0x5d,
 449        0x84, 0x8f, 0x95, 0x6a, 0x7f, 0xad, 0xfd, 0x32,
 450        0x9c, 0x5e, 0xe4, 0x9c, 0x89, 0x60, 0x54, 0xaa,
 451        0x96, 0x72, 0xd2, 0xd7, 0x36, 0x85, 0xa9, 0x45,
 452        0xd2, 0x2a, 0xa1, 0x81, 0x49, 0x6f, 0x7e, 0x04,
 453        0xfa, 0xe2, 0xfe, 0x90, 0x26, 0x77, 0x5a, 0x33,
 454        0xb8, 0x04, 0x9a, 0x7a, 0xe6, 0x4c, 0x4f, 0xad,
 455        0x72, 0x96, 0x08, 0x28, 0x58, 0x13, 0xf8, 0xc4,
 456        0x1c, 0xf0, 0xc3, 0x45, 0x95, 0x49, 0x20, 0x8c,
 457        0x9f, 0x39, 0x70, 0xe1, 0x77, 0xfe, 0xd5, 0x4b,
 458        0xaf, 0x86, 0xda, 0xef, 0x22, 0x06, 0x83, 0x36,
 459        0x29, 0x12, 0x11, 0x40, 0xbc, 0x3b, 0x86, 0xaa,
 460        0xaa, 0x65, 0x60, 0xc3, 0x80, 0xca, 0xed, 0xa9,
 461        0xf3, 0xb0, 0x79, 0x96, 0xa2, 0x55, 0x27, 0x28,
 462        0x55, 0x73, 0x26, 0xa5, 0x50, 0xea, 0x92, 0x4b,
 463        0x3c, 0x5c, 0x82, 0x33, 0xf0, 0x01, 0x3f, 0x03,
 464        0xc1, 0x08, 0x05, 0xbf, 0x98, 0xf4, 0x9b, 0x6d,
 465        0xa5, 0xa8, 0xb4, 0x82, 0x0c, 0x06, 0xfa, 0xff,
 466        0x2d, 0x08, 0xf3, 0x05, 0x4f, 0x57, 0x2a, 0x39,
 467        0xd4, 0x83, 0x0d, 0x75, 0x51, 0xd8, 0x5b, 0x1b,
 468        0xd3, 0x51, 0x5a, 0x32, 0x2a, 0x9b, 0x32, 0xb2,
 469        0xf2, 0xa4, 0x96, 0x12, 0xf2, 0xae, 0x40, 0x34,
 470        0x67, 0xa8, 0xf5, 0x44, 0xd5, 0x35, 0x53, 0xfe,
 471        0xa3, 0x60, 0x96, 0x63, 0x0f, 0x1f, 0x6e, 0xb0,
 472        0x5a, 0x42, 0xa6, 0xfc, 0x51, 0x0b, 0x60, 0x27,
 473        0xbc, 0x06, 0x71, 0xed, 0x65, 0x5b, 0x23, 0x86,
 474        0x4a, 0x07, 0x3b, 0x22, 0x07, 0x46, 0xe6, 0x90,
 475        0x3e, 0xf3, 0x25, 0x50, 0x1b, 0x4c, 0x7f, 0x03,
 476        0x08, 0xa8, 0x36, 0x6b, 0x87, 0xe5, 0xe3, 0xdb,
 477        0x9a, 0x38, 0x83, 0xff, 0x9f, 0x1a, 0x9f, 0x57,
 478        0xa4, 0x2a, 0xf6, 0x37, 0xbc, 0x1a, 0xff, 0xc9,
 479        0x1e, 0x35, 0x0c, 0xc3, 0x7c, 0xa3, 0xb2, 0xe5,
 480        0xd2, 0xc6, 0xb4, 0x57, 0x47, 0xe4, 0x32, 0x16,
 481        0x6d, 0xa9, 0xae, 0x64, 0xe6, 0x2d, 0x8d, 0xc5,
 482        0x8d, 0x50, 0x8e, 0xe8, 0x1a, 0x22, 0x34, 0x2a,
 483        0xd9, 0xeb, 0x51, 0x90, 0x4a, 0xb1, 0x41, 0x7d,
 484        0x64, 0xf9, 0xb9, 0x0d, 0xf6, 0x23, 0x33, 0xb0,
 485        0x33, 0xf4, 0xf7, 0x3f, 0x27, 0x84, 0xc6, 0x0f,
 486        0x54, 0xa5, 0xc0, 0x2e, 0xec, 0x0b, 0x3a, 0x48,
 487        0x6e, 0x80, 0x35, 0x81, 0x43, 0x9b, 0x90, 0xb1,
 488        0xd0, 0x2b, 0xea, 0x21, 0xdc, 0xda, 0x5b, 0x09,
 489        0xf4, 0xcc, 0x10, 0xb4, 0xc7, 0xfe, 0x79, 0x51,
 490        0xc3, 0xc5, 0xac, 0x88, 0x74, 0x84, 0x0b, 0x4b,
 491        0xca, 0x79, 0x16, 0x29, 0xfb, 0x69, 0x54, 0xdf,
 492        0x41, 0x7e, 0xe9, 0xc7, 0x8e, 0xea, 0xa5, 0xfe,
 493        0xfc, 0x76, 0x0e, 0x90, 0xc4, 0x92, 0x38, 0xad,
 494        0x7b, 0x48, 0xe6, 0x6e, 0xf7, 0x21, 0xfd, 0x4e,
 495        0x93, 0x0a, 0x7b, 0x41, 0x83, 0x68, 0xfb, 0x57,
 496        0x51, 0x76, 0x34, 0xa9, 0x6c, 0x00, 0xaa, 0x4f,
 497        0x66, 0x65, 0x98, 0x4a, 0x4f, 0xa3, 0xa0, 0xef,
 498        0x69, 0x3f, 0xe3, 0x1c, 0x92, 0x8c, 0xfd, 0xd8,
 499        0xe8, 0xde, 0x7c, 0x7f, 0x3e, 0x84, 0x8e, 0x69,
 500        0x3c, 0xf1, 0xf2, 0x05, 0x46, 0xdc, 0x2f, 0x9d,
 501        0x5e, 0x6e, 0x4c, 0xfb, 0xb5, 0x99, 0x2a, 0x59,
 502        0x63, 0xc1, 0x34, 0xbc, 0x57, 0xc0, 0x0d, 0xb9,
 503        0x61, 0x25, 0xf3, 0x33, 0x23, 0x51, 0xb6, 0x0d,
 504        0x07, 0xa6, 0xab, 0x94, 0x4a, 0xb7, 0x2a, 0xea,
 505        0xee, 0xac, 0xa3, 0xc3, 0x04, 0x8b, 0x0e, 0x56,
 506        0xfe, 0x44, 0xa7, 0x39, 0xe2, 0xed, 0xed, 0xb4,
 507        0x22, 0x2b, 0xac, 0x12, 0x32, 0x28, 0x91, 0xd8,
 508        0xa5, 0xab, 0xff, 0x5f, 0xe0, 0x4b, 0xda, 0x78,
 509        0x17, 0xda, 0xf1, 0x01, 0x5b, 0xcd, 0xe2, 0x5f,
 510        0x50, 0x45, 0x73, 0x2b, 0xe4, 0x76, 0x77, 0xf4,
 511        0x64, 0x1d, 0x43, 0xfb, 0x84, 0x7a, 0xea, 0x91,
 512        0xae, 0xf9, 0x9e, 0xb7, 0xb4, 0xb0, 0x91, 0x5f,
 513        0x16, 0x35, 0x9a, 0x11, 0xb8, 0xc7, 0xc1, 0x8c,
 514        0xc6, 0x10, 0x8d, 0x2f, 0x63, 0x4a, 0xa7, 0x57,
 515        0x3a, 0x51, 0xd6, 0x32, 0x2d, 0x64, 0x72, 0xd4,
 516        0x66, 0xdc, 0x10, 0xa6, 0x67, 0xd6, 0x04, 0x23,
 517        0x9d, 0x0a, 0x11, 0x77, 0xdd, 0x37, 0x94, 0x17,
 518        0x3c, 0xbf, 0x8b, 0x65, 0xb0, 0x2e, 0x5e, 0x66,
 519        0x47, 0x64, 0xac, 0xdd, 0xf0, 0x84, 0xfd, 0x39,
 520        0xfa, 0x15, 0x5d, 0xef, 0xae, 0xca, 0xc1, 0x36,
 521        0xa7, 0x5c, 0xbf, 0xc7, 0x08, 0xc2, 0x66, 0x00,
 522        0x74, 0x74, 0x4e, 0x27, 0x3f, 0x55, 0x8a, 0xb7,
 523        0x38, 0x66, 0x83, 0x6d, 0xcf, 0x99, 0x9e, 0x60,
 524        0x8f, 0xdd, 0x2e, 0x62, 0x22, 0x0e, 0xef, 0x0c,
 525        0x98, 0xa7, 0x85, 0x74, 0x3b, 0x9d, 0xec, 0x9e,
 526        0xa9, 0x19, 0x72, 0xa5, 0x7f, 0x2c, 0x39, 0xb7,
 527        0x7d, 0xb7, 0xf1, 0x12, 0x65, 0x27, 0x4b, 0x5a,
 528        0xde, 0x17, 0xfe, 0xad, 0x44, 0xf3, 0x20, 0x4d,
 529        0xfd, 0xe4, 0x1f, 0xb5, 0x81, 0xb0, 0x36, 0x37,
 530        0x08, 0x6f, 0xc3, 0x0c, 0xe9, 0x85, 0x98, 0x82,
 531        0xa9, 0x62, 0x0c, 0xc4, 0x97, 0xc0, 0x50, 0xc8,
 532        0xa7, 0x3c, 0x50, 0x9f, 0x43, 0xb9, 0xcd, 0x5e,
 533        0x4d, 0xfa, 0x1c, 0x4b, 0x0b, 0xa9, 0x98, 0x85,
 534        0x38, 0x92, 0xac, 0x8d, 0xe4, 0xad, 0x9b, 0x98,
 535        0xab, 0xd9, 0x38, 0xac, 0x62, 0x52, 0xa3, 0x22,
 536        0x63, 0x0f, 0xbf, 0x95, 0x48, 0xdf, 0x69, 0xe7,
 537        0x8b, 0x33, 0xd5, 0xb2, 0xbd, 0x05, 0x49, 0x49,
 538        0x9d, 0x57, 0x73, 0x19, 0x33, 0xae, 0xfa, 0x33,
 539        0xf1, 0x19, 0xa8, 0x80, 0xce, 0x04, 0x9f, 0xbc,
 540        0x1d, 0x65, 0x82, 0x1b, 0xe5, 0x3a, 0x51, 0xc8,
 541        0x1c, 0x21, 0xe3, 0x5d, 0xf3, 0x7d, 0x9b, 0x2f,
 542        0x2c, 0x1d, 0x4a, 0x7f, 0x9b, 0x68, 0x35, 0xa3,
 543        0xb2, 0x50, 0xf7, 0x62, 0x79, 0xcd, 0xf4, 0x98,
 544        0x4f, 0xe5, 0x63, 0x7c, 0x3e, 0x45, 0x31, 0x8c,
 545        0x16, 0xa0, 0x12, 0xc8, 0x58, 0xce, 0x39, 0xa6,
 546        0xbc, 0x54, 0xdb, 0xc5, 0xe0, 0xd5, 0xba, 0xbc,
 547        0xb9, 0x04, 0xf4, 0x8d, 0xe8, 0x2f, 0x15, 0x9d,
 548};
 549
 550/* 100 test cases */
 551static struct crc_test {
 552        u32 crc;        /* random starting crc */
 553        u32 start;      /* random 6 bit offset in buf */
 554        u32 length;     /* random 11 bit length of test */
 555        u32 crc_le;     /* expected crc32_le result */
 556        u32 crc_be;     /* expected crc32_be result */
 557        u32 crc32c_le;  /* expected crc32c_le result */
 558} const test[] __initconst =
 559{
 560        {0x674bf11d, 0x00000038, 0x00000542, 0x0af6d466, 0xd8b6e4c1, 0xf6e93d6c},
 561        {0x35c672c6, 0x0000003a, 0x000001aa, 0xc6d3dfba, 0x28aaf3ad, 0x0fe92aca},
 562        {0x496da28e, 0x00000039, 0x000005af, 0xd933660f, 0x5d57e81f, 0x52e1ebb8},
 563        {0x09a9b90e, 0x00000027, 0x000001f8, 0xb45fe007, 0xf45fca9a, 0x0798af9a},
 564        {0xdc97e5a9, 0x00000025, 0x000003b6, 0xf81a3562, 0xe0126ba2, 0x18eb3152},
 565        {0x47c58900, 0x0000000a, 0x000000b9, 0x8e58eccf, 0xf3afc793, 0xd00d08c7},
 566        {0x292561e8, 0x0000000c, 0x00000403, 0xa2ba8aaf, 0x0b797aed, 0x8ba966bc},
 567        {0x415037f6, 0x00000003, 0x00000676, 0xa17d52e8, 0x7f0fdf35, 0x11d694a2},
 568        {0x3466e707, 0x00000026, 0x00000042, 0x258319be, 0x75c484a2, 0x6ab3208d},
 569        {0xafd1281b, 0x00000023, 0x000002ee, 0x4428eaf8, 0x06c7ad10, 0xba4603c5},
 570        {0xd3857b18, 0x00000028, 0x000004a2, 0x5c430821, 0xb062b7cb, 0xe6071c6f},
 571        {0x1d825a8f, 0x0000002b, 0x0000050b, 0xd2c45f0c, 0xd68634e0, 0x179ec30a},
 572        {0x5033e3bc, 0x0000000b, 0x00000078, 0xa3ea4113, 0xac6d31fb, 0x0903beb8},
 573        {0x94f1fb5e, 0x0000000f, 0x000003a2, 0xfbfc50b1, 0x3cfe50ed, 0x6a7cb4fa},
 574        {0xc9a0fe14, 0x00000009, 0x00000473, 0x5fb61894, 0x87070591, 0xdb535801},
 575        {0x88a034b1, 0x0000001c, 0x000005ad, 0xc1b16053, 0x46f95c67, 0x92bed597},
 576        {0xf0f72239, 0x00000020, 0x0000026d, 0xa6fa58f3, 0xf8c2c1dd, 0x192a3f1b},
 577        {0xcc20a5e3, 0x0000003b, 0x0000067a, 0x7740185a, 0x308b979a, 0xccbaec1a},
 578        {0xce589c95, 0x0000002b, 0x00000641, 0xd055e987, 0x40aae25b, 0x7eabae4d},
 579        {0x78edc885, 0x00000035, 0x000005be, 0xa39cb14b, 0x035b0d1f, 0x28c72982},
 580        {0x9d40a377, 0x0000003b, 0x00000038, 0x1f47ccd2, 0x197fbc9d, 0xc3cd4d18},
 581        {0x703d0e01, 0x0000003c, 0x000006f1, 0x88735e7c, 0xfed57c5a, 0xbca8f0e7},
 582        {0x776bf505, 0x0000000f, 0x000005b2, 0x5cc4fc01, 0xf32efb97, 0x713f60b3},
 583        {0x4a3e7854, 0x00000027, 0x000004b8, 0x8d923c82, 0x0cbfb4a2, 0xebd08fd5},
 584        {0x209172dd, 0x0000003b, 0x00000356, 0xb89e9c2b, 0xd7868138, 0x64406c59},
 585        {0x3ba4cc5b, 0x0000002f, 0x00000203, 0xe51601a9, 0x5b2a1032, 0x7421890e},
 586        {0xfc62f297, 0x00000000, 0x00000079, 0x71a8e1a2, 0x5d88685f, 0xe9347603},
 587        {0x64280b8b, 0x00000016, 0x000007ab, 0x0fa7a30c, 0xda3a455f, 0x1bef9060},
 588        {0x97dd724b, 0x00000033, 0x000007ad, 0x5788b2f4, 0xd7326d32, 0x34720072},
 589        {0x61394b52, 0x00000035, 0x00000571, 0xc66525f1, 0xcabe7fef, 0x48310f59},
 590        {0x29b4faff, 0x00000024, 0x0000006e, 0xca13751e, 0x993648e0, 0x783a4213},
 591        {0x29bfb1dc, 0x0000000b, 0x00000244, 0x436c43f7, 0x429f7a59, 0x9e8efd41},
 592        {0x86ae934b, 0x00000035, 0x00000104, 0x0760ec93, 0x9cf7d0f4, 0xfc3d34a5},
 593        {0xc4c1024e, 0x0000002e, 0x000006b1, 0x6516a3ec, 0x19321f9c, 0x17a52ae2},
 594        {0x3287a80a, 0x00000026, 0x00000496, 0x0b257eb1, 0x754ebd51, 0x886d935a},
 595        {0xa4db423e, 0x00000023, 0x0000045d, 0x9b3a66dc, 0x873e9f11, 0xeaaeaeb2},
 596        {0x7a1078df, 0x00000015, 0x0000014a, 0x8c2484c5, 0x6a628659, 0x8e900a4b},
 597        {0x6048bd5b, 0x00000006, 0x0000006a, 0x897e3559, 0xac9961af, 0xd74662b1},
 598        {0xd8f9ea20, 0x0000003d, 0x00000277, 0x60eb905b, 0xed2aaf99, 0xd26752ba},
 599        {0xea5ec3b4, 0x0000002a, 0x000004fe, 0x869965dc, 0x6c1f833b, 0x8b1fcd62},
 600        {0x2dfb005d, 0x00000016, 0x00000345, 0x6a3b117e, 0xf05e8521, 0xf54342fe},
 601        {0x5a214ade, 0x00000020, 0x000005b6, 0x467f70be, 0xcb22ccd3, 0x5b95b988},
 602        {0xf0ab9cca, 0x00000032, 0x00000515, 0xed223df3, 0x7f3ef01d, 0x2e1176be},
 603        {0x91b444f9, 0x0000002e, 0x000007f8, 0x84e9a983, 0x5676756f, 0x66120546},
 604        {0x1b5d2ddb, 0x0000002e, 0x0000012c, 0xba638c4c, 0x3f42047b, 0xf256a5cc},
 605        {0xd824d1bb, 0x0000003a, 0x000007b5, 0x6288653b, 0x3a3ebea0, 0x4af1dd69},
 606        {0x0470180c, 0x00000034, 0x000001f0, 0x9d5b80d6, 0x3de08195, 0x56f0a04a},
 607        {0xffaa3a3f, 0x00000036, 0x00000299, 0xf3a82ab8, 0x53e0c13d, 0x74f6b6b2},
 608        {0x6406cfeb, 0x00000023, 0x00000600, 0xa920b8e8, 0xe4e2acf4, 0x085951fd},
 609        {0xb24aaa38, 0x0000003e, 0x000004a1, 0x657cc328, 0x5077b2c3, 0xc65387eb},
 610        {0x58b2ab7c, 0x00000039, 0x000002b4, 0x3a17ee7e, 0x9dcb3643, 0x1ca9257b},
 611        {0x3db85970, 0x00000006, 0x000002b6, 0x95268b59, 0xb9812c10, 0xfd196d76},
 612        {0x857830c5, 0x00000003, 0x00000590, 0x4ef439d5, 0xf042161d, 0x5ef88339},
 613        {0xe1fcd978, 0x0000003e, 0x000007d8, 0xae8d8699, 0xce0a1ef5, 0x2c3714d9},
 614        {0xb982a768, 0x00000016, 0x000006e0, 0x62fad3df, 0x5f8a067b, 0x58576548},
 615        {0x1d581ce8, 0x0000001e, 0x0000058b, 0xf0f5da53, 0x26e39eee, 0xfd7c57de},
 616        {0x2456719b, 0x00000025, 0x00000503, 0x4296ac64, 0xd50e4c14, 0xd5fedd59},
 617        {0xfae6d8f2, 0x00000000, 0x0000055d, 0x057fdf2e, 0x2a31391a, 0x1cc3b17b},
 618        {0xcba828e3, 0x00000039, 0x000002ce, 0xe3f22351, 0x8f00877b, 0x270eed73},
 619        {0x13d25952, 0x0000000a, 0x0000072d, 0x76d4b4cc, 0x5eb67ec3, 0x91ecbb11},
 620        {0x0342be3f, 0x00000015, 0x00000599, 0xec75d9f1, 0x9d4d2826, 0x05ed8d0c},
 621        {0xeaa344e0, 0x00000014, 0x000004d8, 0x72a4c981, 0x2064ea06, 0x0b09ad5b},
 622        {0xbbb52021, 0x0000003b, 0x00000272, 0x04af99fc, 0xaf042d35, 0xf8d511fb},
 623        {0xb66384dc, 0x0000001d, 0x000007fc, 0xd7629116, 0x782bd801, 0x5ad832cc},
 624        {0x616c01b6, 0x00000022, 0x000002c8, 0x5b1dab30, 0x783ce7d2, 0x1214d196},
 625        {0xce2bdaad, 0x00000016, 0x0000062a, 0x932535c8, 0x3f02926d, 0x5747218a},
 626        {0x00fe84d7, 0x00000005, 0x00000205, 0x850e50aa, 0x753d649c, 0xde8f14de},
 627        {0xbebdcb4c, 0x00000006, 0x0000055d, 0xbeaa37a2, 0x2d8c9eba, 0x3563b7b9},
 628        {0xd8b1a02a, 0x00000010, 0x00000387, 0x5017d2fc, 0x503541a5, 0x071475d0},
 629        {0x3b96cad2, 0x00000036, 0x00000347, 0x1d2372ae, 0x926cd90b, 0x54c79d60},
 630        {0xc94c1ed7, 0x00000005, 0x0000038b, 0x9e9fdb22, 0x144a9178, 0x4c53eee6},
 631        {0x1aad454e, 0x00000025, 0x000002b2, 0xc3f6315c, 0x5c7a35b3, 0x10137a3c},
 632        {0xa4fec9a6, 0x00000000, 0x000006d6, 0x90be5080, 0xa4107605, 0xaa9d6c73},
 633        {0x1bbe71e2, 0x0000001f, 0x000002fd, 0x4e504c3b, 0x284ccaf1, 0xb63d23e7},
 634        {0x4201c7e4, 0x00000002, 0x000002b7, 0x7822e3f9, 0x0cc912a9, 0x7f53e9cf},
 635        {0x23fddc96, 0x00000003, 0x00000627, 0x8a385125, 0x07767e78, 0x13c1cd83},
 636        {0xd82ba25c, 0x00000016, 0x0000063e, 0x98e4148a, 0x283330c9, 0x49ff5867},
 637        {0x786f2032, 0x0000002d, 0x0000060f, 0xf201600a, 0xf561bfcd, 0x8467f211},
 638        {0xfebe4e1f, 0x0000002a, 0x000004f2, 0x95e51961, 0xfd80dcab, 0x3f9683b2},
 639        {0x1a6e0a39, 0x00000008, 0x00000672, 0x8af6c2a5, 0x78dd84cb, 0x76a3f874},
 640        {0x56000ab8, 0x0000000e, 0x000000e5, 0x36bacb8f, 0x22ee1f77, 0x863b702f},
 641        {0x4717fe0c, 0x00000000, 0x000006ec, 0x8439f342, 0x5c8e03da, 0xdc6c58ff},
 642        {0xd5d5d68e, 0x0000003c, 0x000003a3, 0x46fff083, 0x177d1b39, 0x0622cc95},
 643        {0xc25dd6c6, 0x00000024, 0x000006c0, 0x5ceb8eb4, 0x892b0d16, 0xe85605cd},
 644        {0xe9b11300, 0x00000023, 0x00000683, 0x07a5d59a, 0x6c6a3208, 0x31da5f06},
 645        {0x95cd285e, 0x00000001, 0x00000047, 0x7b3a4368, 0x0202c07e, 0xa1f2e784},
 646        {0xd9245a25, 0x0000001e, 0x000003a6, 0xd33c1841, 0x1936c0d5, 0xb07cc616},
 647        {0x103279db, 0x00000006, 0x0000039b, 0xca09b8a0, 0x77d62892, 0xbf943b6c},
 648        {0x1cba3172, 0x00000027, 0x000001c8, 0xcb377194, 0xebe682db, 0x2c01af1c},
 649        {0x8f613739, 0x0000000c, 0x000001df, 0xb4b0bc87, 0x7710bd43, 0x0fe5f56d},
 650        {0x1c6aa90d, 0x0000001b, 0x0000053c, 0x70559245, 0xda7894ac, 0xf8943b2d},
 651        {0xaabe5b93, 0x0000003d, 0x00000715, 0xcdbf42fa, 0x0c3b99e7, 0xe4d89272},
 652        {0xf15dd038, 0x00000006, 0x000006db, 0x6e104aea, 0x8d5967f2, 0x7c2f6bbb},
 653        {0x584dd49c, 0x00000020, 0x000007bc, 0x36b6cfd6, 0xad4e23b2, 0xabbf388b},
 654        {0x5d8c9506, 0x00000020, 0x00000470, 0x4c62378e, 0x31d92640, 0x1dca1f4e},
 655        {0xb80d17b0, 0x00000032, 0x00000346, 0x22a5bb88, 0x9a7ec89f, 0x5c170e23},
 656        {0xdaf0592e, 0x00000023, 0x000007b0, 0x3cab3f99, 0x9b1fdd99, 0xc0e9d672},
 657        {0x4793cc85, 0x0000000d, 0x00000706, 0xe82e04f6, 0xed3db6b7, 0xc18bdc86},
 658        {0x82ebf64e, 0x00000009, 0x000007c3, 0x69d590a9, 0x9efa8499, 0xa874fcdd},
 659        {0xb18a0319, 0x00000026, 0x000007db, 0x1cf98dcc, 0x8fa9ad6a, 0x9dc0bb48},
 660};
 661
 662#include <linux/time.h>
 663
 664static int __init crc32c_test(void)
 665{
 666        int i;
 667        int errors = 0;
 668        int bytes = 0;
 669        u64 nsec;
 670        unsigned long flags;
 671
 672        /* keep static to prevent cache warming code from
 673         * getting eliminated by the compiler */
 674        static u32 crc;
 675
 676        /* pre-warm the cache */
 677        for (i = 0; i < 100; i++) {
 678                bytes += 2*test[i].length;
 679
 680                crc ^= __crc32c_le(test[i].crc, test_buf +
 681                    test[i].start, test[i].length);
 682        }
 683
 684        /* reduce OS noise */
 685        local_irq_save(flags);
 686
 687        nsec = ktime_get_ns();
 688        for (i = 0; i < 100; i++) {
 689                if (test[i].crc32c_le != __crc32c_le(test[i].crc, test_buf +
 690                    test[i].start, test[i].length))
 691                        errors++;
 692        }
 693        nsec = ktime_get_ns() - nsec;
 694
 695        local_irq_restore(flags);
 696
 697        pr_info("crc32c: CRC_LE_BITS = %d\n", CRC_LE_BITS);
 698
 699        if (errors)
 700                pr_warn("crc32c: %d self tests failed\n", errors);
 701        else {
 702                pr_info("crc32c: self tests passed, processed %d bytes in %lld nsec\n",
 703                        bytes, nsec);
 704        }
 705
 706        return 0;
 707}
 708
 709static int __init crc32c_combine_test(void)
 710{
 711        int i, j;
 712        int errors = 0, runs = 0;
 713
 714        for (i = 0; i < 10; i++) {
 715                u32 crc_full;
 716
 717                crc_full = __crc32c_le(test[i].crc, test_buf + test[i].start,
 718                                       test[i].length);
 719                for (j = 0; j <= test[i].length; ++j) {
 720                        u32 crc1, crc2;
 721                        u32 len1 = j, len2 = test[i].length - j;
 722
 723                        crc1 = __crc32c_le(test[i].crc, test_buf +
 724                                           test[i].start, len1);
 725                        crc2 = __crc32c_le(0, test_buf + test[i].start +
 726                                           len1, len2);
 727
 728                        if (!(crc_full == __crc32c_le_combine(crc1, crc2, len2) &&
 729                              crc_full == test[i].crc32c_le))
 730                                errors++;
 731                        runs++;
 732                        cond_resched();
 733                }
 734        }
 735
 736        if (errors)
 737                pr_warn("crc32c_combine: %d/%d self tests failed\n", errors, runs);
 738        else
 739                pr_info("crc32c_combine: %d self tests passed\n", runs);
 740
 741        return 0;
 742}
 743
 744static int __init crc32_test(void)
 745{
 746        int i;
 747        int errors = 0;
 748        int bytes = 0;
 749        u64 nsec;
 750        unsigned long flags;
 751
 752        /* keep static to prevent cache warming code from
 753         * getting eliminated by the compiler */
 754        static u32 crc;
 755
 756        /* pre-warm the cache */
 757        for (i = 0; i < 100; i++) {
 758                bytes += 2*test[i].length;
 759
 760                crc ^= crc32_le(test[i].crc, test_buf +
 761                    test[i].start, test[i].length);
 762
 763                crc ^= crc32_be(test[i].crc, test_buf +
 764                    test[i].start, test[i].length);
 765        }
 766
 767        /* reduce OS noise */
 768        local_irq_save(flags);
 769
 770        nsec = ktime_get_ns();
 771        for (i = 0; i < 100; i++) {
 772                if (test[i].crc_le != crc32_le(test[i].crc, test_buf +
 773                    test[i].start, test[i].length))
 774                        errors++;
 775
 776                if (test[i].crc_be != crc32_be(test[i].crc, test_buf +
 777                    test[i].start, test[i].length))
 778                        errors++;
 779        }
 780        nsec = ktime_get_ns() - nsec;
 781
 782        local_irq_restore(flags);
 783
 784        pr_info("crc32: CRC_LE_BITS = %d, CRC_BE BITS = %d\n",
 785                 CRC_LE_BITS, CRC_BE_BITS);
 786
 787        if (errors)
 788                pr_warn("crc32: %d self tests failed\n", errors);
 789        else {
 790                pr_info("crc32: self tests passed, processed %d bytes in %lld nsec\n",
 791                        bytes, nsec);
 792        }
 793
 794        return 0;
 795}
 796
 797static int __init crc32_combine_test(void)
 798{
 799        int i, j;
 800        int errors = 0, runs = 0;
 801
 802        for (i = 0; i < 10; i++) {
 803                u32 crc_full;
 804
 805                crc_full = crc32_le(test[i].crc, test_buf + test[i].start,
 806                                    test[i].length);
 807                for (j = 0; j <= test[i].length; ++j) {
 808                        u32 crc1, crc2;
 809                        u32 len1 = j, len2 = test[i].length - j;
 810
 811                        crc1 = crc32_le(test[i].crc, test_buf +
 812                                        test[i].start, len1);
 813                        crc2 = crc32_le(0, test_buf + test[i].start +
 814                                        len1, len2);
 815
 816                        if (!(crc_full == crc32_le_combine(crc1, crc2, len2) &&
 817                              crc_full == test[i].crc_le))
 818                                errors++;
 819                        runs++;
 820                        cond_resched();
 821                }
 822        }
 823
 824        if (errors)
 825                pr_warn("crc32_combine: %d/%d self tests failed\n", errors, runs);
 826        else
 827                pr_info("crc32_combine: %d self tests passed\n", runs);
 828
 829        return 0;
 830}
 831
 832static int __init crc32test_init(void)
 833{
 834        crc32_test();
 835        crc32c_test();
 836
 837        crc32_combine_test();
 838        crc32c_combine_test();
 839
 840        return 0;
 841}
 842
 843static void __exit crc32_exit(void)
 844{
 845}
 846
 847module_init(crc32test_init);
 848module_exit(crc32_exit);
 849
 850MODULE_AUTHOR("Matt Domsch <Matt_Domsch@dell.com>");
 851MODULE_DESCRIPTION("CRC32 selftest");
 852MODULE_LICENSE("GPL");
 853