lib/crc32test.c

   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 */
  34 static 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 */
 551 static 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
 664 static 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
 709 static 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
 744 static 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
 797 static 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
 832 static 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
 843 static void __exit crc32_exit(void)
 844 {
 845 }
 846
 847 module_init(crc32test_init);
 848 module_exit(crc32_exit);
 849
 850 MODULE_AUTHOR("Matt Domsch <Matt_Domsch@dell.com>");
 851 MODULE_DESCRIPTION("CRC32 selftest");
 852 MODULE_LICENSE("GPL");