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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 /* see: Documentation/crc32.txt for a description of algorithms */
28
29 #include <linux/crc32.h>
30 #include <linux/module.h>
31 #include <linux/types.h>
32 #include "crc32defs.h"
33
34 #if CRC_LE_BITS > 8
35 # define tole(x) ((__force u32) __constant_cpu_to_le32(x))
36 #else
37 # define tole(x) (x)
38 #endif
39
40 #if CRC_BE_BITS > 8
41 # define tobe(x) ((__force u32) __constant_cpu_to_be32(x))
42 #else
43 # define tobe(x) (x)
44 #endif
45
46 #include "crc32table.h"
47
48 MODULE_AUTHOR("Matt Domsch <Matt_Domsch@dell.com>");
49 MODULE_DESCRIPTION("Various CRC32 calculations");
50 MODULE_LICENSE("GPL");
51
52 #if CRC_LE_BITS > 8 || CRC_BE_BITS > 8
53
54 /* implements slicing-by-4 or slicing-by-8 algorithm */
55 static inline u32
56 crc32_body(u32 crc, unsigned char const *buf, size_t len, const u32 (*tab)[256])
57 {
58 # ifdef __LITTLE_ENDIAN
59 # define DO_CRC(x) crc = t0[(crc ^ (x)) & 255] ^ (crc >> 8)
60 # define DO_CRC4 (t3[(q) & 255] ^ t2[(q >> 8) & 255] ^ \
61 t1[(q >> 16) & 255] ^ t0[(q >> 24) & 255])
62 # define DO_CRC8 (t7[(q) & 255] ^ t6[(q >> 8) & 255] ^ \
63 t5[(q >> 16) & 255] ^ t4[(q >> 24) & 255])
64 # else
65 # define DO_CRC(x) crc = t0[((crc >> 24) ^ (x)) & 255] ^ (crc << 8)
66 # define DO_CRC4 (t0[(q) & 255] ^ t1[(q >> 8) & 255] ^ \
67 t2[(q >> 16) & 255] ^ t3[(q >> 24) & 255])
68 # define DO_CRC8 (t4[(q) & 255] ^ t5[(q >> 8) & 255] ^ \
69 t6[(q >> 16) & 255] ^ t7[(q >> 24) & 255])
70 # endif
71 const u32 *b;
72 size_t rem_len;
73 # ifdef CONFIG_X86
74 size_t i;
75 # endif
76 const u32 *t0=tab[0], *t1=tab[1], *t2=tab[2], *t3=tab[3];
77 const u32 *t4 = tab[4], *t5 = tab[5], *t6 = tab[6], *t7 = tab[7];
78 u32 q;
79
80 /* Align it */
81 if (unlikely((long)buf & 3 && len)) {
82 do {
83 DO_CRC(*buf++);
84 } while ((--len) && ((long)buf)&3);
85 }
86
87 # if CRC_LE_BITS == 32
88 rem_len = len & 3;
89 len = len >> 2;
90 # else
91 rem_len = len & 7;
92 len = len >> 3;
93 # endif
94
95 b = (const u32 *)buf;
96 # ifdef CONFIG_X86
97 --b;
98 for (i = 0; i < len; i++) {
99 # else
100 for (--b; len; --len) {
101 # endif
102 q = crc ^ *++b; /* use pre increment for speed */
103 # if CRC_LE_BITS == 32
104 crc = DO_CRC4;
105 # else
106 crc = DO_CRC8;
107 q = *++b;
108 crc ^= DO_CRC4;
109 # endif
110 }
111 len = rem_len;
112 /* And the last few bytes */
113 if (len) {
114 u8 *p = (u8 *)(b + 1) - 1;
115 # ifdef CONFIG_X86
116 for (i = 0; i < len; i++)
117 DO_CRC(*++p); /* use pre increment for speed */
118 # else
119 do {
120 DO_CRC(*++p); /* use pre increment for speed */
121 } while (--len);
122 # endif
123 }
124 return crc;
125 #undef DO_CRC
126 #undef DO_CRC4
127 #undef DO_CRC8
128 }
129 #endif
130
131 /**
132 * crc32_le() - Calculate bitwise little-endian Ethernet AUTODIN II CRC32
133 * @crc: seed value for computation. ~0 for Ethernet, sometimes 0 for
134 * other uses, or the previous crc32 value if computing incrementally.
135 * @p: pointer to buffer over which CRC is run
136 * @len: length of buffer @p
137 */
138 static inline u32 __pure crc32_le_generic(u32 crc, unsigned char const *p,
139 size_t len, const u32 (*tab)[256],
140 u32 polynomial)
141 {
142 #if CRC_LE_BITS == 1
143 int i;
144 while (len--) {
145 crc ^= *p++;
146 for (i = 0; i < 8; i++)
147 crc = (crc >> 1) ^ ((crc & 1) ? polynomial : 0);
148 }
149 # elif CRC_LE_BITS == 2
150 while (len--) {
151 crc ^= *p++;
152 crc = (crc >> 2) ^ tab[0][crc & 3];
153 crc = (crc >> 2) ^ tab[0][crc & 3];
154 crc = (crc >> 2) ^ tab[0][crc & 3];
155 crc = (crc >> 2) ^ tab[0][crc & 3];
156 }
157 # elif CRC_LE_BITS == 4
158 while (len--) {
159 crc ^= *p++;
160 crc = (crc >> 4) ^ tab[0][crc & 15];
161 crc = (crc >> 4) ^ tab[0][crc & 15];
162 }
163 # elif CRC_LE_BITS == 8
164 /* aka Sarwate algorithm */
165 while (len--) {
166 crc ^= *p++;
167 crc = (crc >> 8) ^ tab[0][crc & 255];
168 }
169 # else
170 crc = (__force u32) __cpu_to_le32(crc);
171 crc = crc32_body(crc, p, len, tab);
172 crc = __le32_to_cpu((__force __le32)crc);
173 #endif
174 return crc;
175 }
176
177 #if CRC_LE_BITS == 1
178 u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)
179 {
180 return crc32_le_generic(crc, p, len, NULL, CRCPOLY_LE);
181 }
182 u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len)
183 {
184 return crc32_le_generic(crc, p, len, NULL, CRC32C_POLY_LE);
185 }
186 #else
187 u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)
188 {
189 return crc32_le_generic(crc, p, len, crc32table_le, CRCPOLY_LE);
190 }
191 u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len)
192 {
193 return crc32_le_generic(crc, p, len, crc32ctable_le, CRC32C_POLY_LE);
194 }
195 #endif
196 EXPORT_SYMBOL(crc32_le);
197 EXPORT_SYMBOL(__crc32c_le);
198
199 /**
200 * crc32_be() - Calculate bitwise big-endian Ethernet AUTODIN II CRC32
201 * @crc: seed value for computation. ~0 for Ethernet, sometimes 0 for
202 * other uses, or the previous crc32 value if computing incrementally.
203 * @p: pointer to buffer over which CRC is run
204 * @len: length of buffer @p
205 */
206 static inline u32 __pure crc32_be_generic(u32 crc, unsigned char const *p,
207 size_t len, const u32 (*tab)[256],
208 u32 polynomial)
209 {
210 #if CRC_BE_BITS == 1
211 int i;
212 while (len--) {
213 crc ^= *p++ << 24;
214 for (i = 0; i < 8; i++)
215 crc =
216 (crc << 1) ^ ((crc & 0x80000000) ? polynomial :
217 0);
218 }
219 # elif CRC_BE_BITS == 2
220 while (len--) {
221 crc ^= *p++ << 24;
222 crc = (crc << 2) ^ tab[0][crc >> 30];
223 crc = (crc << 2) ^ tab[0][crc >> 30];
224 crc = (crc << 2) ^ tab[0][crc >> 30];
225 crc = (crc << 2) ^ tab[0][crc >> 30];
226 }
227 # elif CRC_BE_BITS == 4
228 while (len--) {
229 crc ^= *p++ << 24;
230 crc = (crc << 4) ^ tab[0][crc >> 28];
231 crc = (crc << 4) ^ tab[0][crc >> 28];
232 }
233 # elif CRC_BE_BITS == 8
234 while (len--) {
235 crc ^= *p++ << 24;
236 crc = (crc << 8) ^ tab[0][crc >> 24];
237 }
238 # else
239 crc = (__force u32) __cpu_to_be32(crc);
240 crc = crc32_body(crc, p, len, tab);
241 crc = __be32_to_cpu((__force __be32)crc);
242 # endif
243 return crc;
244 }
245
246 #if CRC_LE_BITS == 1
247 u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
248 {
249 return crc32_be_generic(crc, p, len, NULL, CRCPOLY_BE);
250 }
251 #else
252 u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
253 {
254 return crc32_be_generic(crc, p, len, crc32table_be, CRCPOLY_BE);
255 }
256 #endif
257 EXPORT_SYMBOL(crc32_be);
258
259 #ifdef CONFIG_CRC32_SELFTEST
260
261 /* 4096 random bytes */
262 static u8 __attribute__((__aligned__(8))) test_buf[] =
263 {
264 0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30,
265 0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4,
266 0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60,
267 0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c,
268 0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4,
269 0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a,
270 0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a,
271 0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4,
272 0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9,
273 0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4,
274 0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca,
275 0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61,
276 0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e,
277 0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 0x7a,
278 0x8d, 0x07, 0x63, 0xdb, 0x40, 0xe9, 0x0b, 0x6f,
279 0xad, 0x97, 0xf1, 0xed, 0xd0, 0x1e, 0x26, 0xfd,
280 0xbf, 0xb7, 0xc8, 0x04, 0x94, 0xf8, 0x8b, 0x8c,
281 0xf1, 0xab, 0x7a, 0xd4, 0xdd, 0xf3, 0xe8, 0x88,
282 0xc3, 0xed, 0x17, 0x8a, 0x9b, 0x40, 0x0d, 0x53,
283 0x62, 0x12, 0x03, 0x5f, 0x1b, 0x35, 0x32, 0x1f,
284 0xb4, 0x7b, 0x93, 0x78, 0x0d, 0xdb, 0xce, 0xa4,
285 0xc0, 0x47, 0xd5, 0xbf, 0x68, 0xe8, 0x5d, 0x74,
286 0x8f, 0x8e, 0x75, 0x1c, 0xb2, 0x4f, 0x9a, 0x60,
287 0xd1, 0xbe, 0x10, 0xf4, 0x5c, 0xa1, 0x53, 0x09,
288 0xa5, 0xe0, 0x09, 0x54, 0x85, 0x5c, 0xdc, 0x07,
289 0xe7, 0x21, 0x69, 0x7b, 0x8a, 0xfd, 0x90, 0xf1,
290 0x22, 0xd0, 0xb4, 0x36, 0x28, 0xe6, 0xb8, 0x0f,
291 0x39, 0xde, 0xc8, 0xf3, 0x86, 0x60, 0x34, 0xd2,
292 0x5e, 0xdf, 0xfd, 0xcf, 0x0f, 0xa9, 0x65, 0xf0,
293 0xd5, 0x4d, 0x96, 0x40, 0xe3, 0xdf, 0x3f, 0x95,
294 0x5a, 0x39, 0x19, 0x93, 0xf4, 0x75, 0xce, 0x22,
295 0x00, 0x1c, 0x93, 0xe2, 0x03, 0x66, 0xf4, 0x93,
296 0x73, 0x86, 0x81, 0x8e, 0x29, 0x44, 0x48, 0x86,
297 0x61, 0x7c, 0x48, 0xa3, 0x43, 0xd2, 0x9c, 0x8d,
298 0xd4, 0x95, 0xdd, 0xe1, 0x22, 0x89, 0x3a, 0x40,
299 0x4c, 0x1b, 0x8a, 0x04, 0xa8, 0x09, 0x69, 0x8b,
300 0xea, 0xc6, 0x55, 0x8e, 0x57, 0xe6, 0x64, 0x35,
301 0xf0, 0xc7, 0x16, 0x9f, 0x5d, 0x5e, 0x86, 0x40,
302 0x46, 0xbb, 0xe5, 0x45, 0x88, 0xfe, 0xc9, 0x63,
303 0x15, 0xfb, 0xf5, 0xbd, 0x71, 0x61, 0xeb, 0x7b,
304 0x78, 0x70, 0x07, 0x31, 0x03, 0x9f, 0xb2, 0xc8,
305 0xa7, 0xab, 0x47, 0xfd, 0xdf, 0xa0, 0x78, 0x72,
306 0xa4, 0x2a, 0xe4, 0xb6, 0xba, 0xc0, 0x1e, 0x86,
307 0x71, 0xe6, 0x3d, 0x18, 0x37, 0x70, 0xe6, 0xff,
308 0xe0, 0xbc, 0x0b, 0x22, 0xa0, 0x1f, 0xd3, 0xed,
309 0xa2, 0x55, 0x39, 0xab, 0xa8, 0x13, 0x73, 0x7c,
310 0x3f, 0xb2, 0xd6, 0x19, 0xac, 0xff, 0x99, 0xed,
311 0xe8, 0xe6, 0xa6, 0x22, 0xe3, 0x9c, 0xf1, 0x30,
312 0xdc, 0x01, 0x0a, 0x56, 0xfa, 0xe4, 0xc9, 0x99,
313 0xdd, 0xa8, 0xd8, 0xda, 0x35, 0x51, 0x73, 0xb4,
314 0x40, 0x86, 0x85, 0xdb, 0x5c, 0xd5, 0x85, 0x80,
315 0x14, 0x9c, 0xfd, 0x98, 0xa9, 0x82, 0xc5, 0x37,
316 0xff, 0x32, 0x5d, 0xd0, 0x0b, 0xfa, 0xdc, 0x04,
317 0x5e, 0x09, 0xd2, 0xca, 0x17, 0x4b, 0x1a, 0x8e,
318 0x15, 0xe1, 0xcc, 0x4e, 0x52, 0x88, 0x35, 0xbd,
319 0x48, 0xfe, 0x15, 0xa0, 0x91, 0xfd, 0x7e, 0x6c,
320 0x0e, 0x5d, 0x79, 0x1b, 0x81, 0x79, 0xd2, 0x09,
321 0x34, 0x70, 0x3d, 0x81, 0xec, 0xf6, 0x24, 0xbb,
322 0xfb, 0xf1, 0x7b, 0xdf, 0x54, 0xea, 0x80, 0x9b,
323 0xc7, 0x99, 0x9e, 0xbd, 0x16, 0x78, 0x12, 0x53,
324 0x5e, 0x01, 0xa7, 0x4e, 0xbd, 0x67, 0xe1, 0x9b,
325 0x4c, 0x0e, 0x61, 0x45, 0x97, 0xd2, 0xf0, 0x0f,
326 0xfe, 0x15, 0x08, 0xb7, 0x11, 0x4c, 0xe7, 0xff,
327 0x81, 0x53, 0xff, 0x91, 0x25, 0x38, 0x7e, 0x40,
328 0x94, 0xe5, 0xe0, 0xad, 0xe6, 0xd9, 0x79, 0xb6,
329 0x92, 0xc9, 0xfc, 0xde, 0xc3, 0x1a, 0x23, 0xbb,
330 0xdd, 0xc8, 0x51, 0x0c, 0x3a, 0x72, 0xfa, 0x73,
331 0x6f, 0xb7, 0xee, 0x61, 0x39, 0x03, 0x01, 0x3f,
332 0x7f, 0x94, 0x2e, 0x2e, 0xba, 0x3a, 0xbb, 0xb4,
333 0xfa, 0x6a, 0x17, 0xfe, 0xea, 0xef, 0x5e, 0x66,
334 0x97, 0x3f, 0x32, 0x3d, 0xd7, 0x3e, 0xb1, 0xf1,
335 0x6c, 0x14, 0x4c, 0xfd, 0x37, 0xd3, 0x38, 0x80,
336 0xfb, 0xde, 0xa6, 0x24, 0x1e, 0xc8, 0xca, 0x7f,
337 0x3a, 0x93, 0xd8, 0x8b, 0x18, 0x13, 0xb2, 0xe5,
338 0xe4, 0x93, 0x05, 0x53, 0x4f, 0x84, 0x66, 0xa7,
339 0x58, 0x5c, 0x7b, 0x86, 0x52, 0x6d, 0x0d, 0xce,
340 0xa4, 0x30, 0x7d, 0xb6, 0x18, 0x9f, 0xeb, 0xff,
341 0x22, 0xbb, 0x72, 0x29, 0xb9, 0x44, 0x0b, 0x48,
342 0x1e, 0x84, 0x71, 0x81, 0xe3, 0x6d, 0x73, 0x26,
343 0x92, 0xb4, 0x4d, 0x2a, 0x29, 0xb8, 0x1f, 0x72,
344 0xed, 0xd0, 0xe1, 0x64, 0x77, 0xea, 0x8e, 0x88,
345 0x0f, 0xef, 0x3f, 0xb1, 0x3b, 0xad, 0xf9, 0xc9,
346 0x8b, 0xd0, 0xac, 0xc6, 0xcc, 0xa9, 0x40, 0xcc,
347 0x76, 0xf6, 0x3b, 0x53, 0xb5, 0x88, 0xcb, 0xc8,
348 0x37, 0xf1, 0xa2, 0xba, 0x23, 0x15, 0x99, 0x09,
349 0xcc, 0xe7, 0x7a, 0x3b, 0x37, 0xf7, 0x58, 0xc8,
350 0x46, 0x8c, 0x2b, 0x2f, 0x4e, 0x0e, 0xa6, 0x5c,
351 0xea, 0x85, 0x55, 0xba, 0x02, 0x0e, 0x0e, 0x48,
352 0xbc, 0xe1, 0xb1, 0x01, 0x35, 0x79, 0x13, 0x3d,
353 0x1b, 0xc0, 0x53, 0x68, 0x11, 0xe7, 0x95, 0x0f,
354 0x9d, 0x3f, 0x4c, 0x47, 0x7b, 0x4d, 0x1c, 0xae,
355 0x50, 0x9b, 0xcb, 0xdd, 0x05, 0x8d, 0x9a, 0x97,
356 0xfd, 0x8c, 0xef, 0x0c, 0x1d, 0x67, 0x73, 0xa8,
357 0x28, 0x36, 0xd5, 0xb6, 0x92, 0x33, 0x40, 0x75,
358 0x0b, 0x51, 0xc3, 0x64, 0xba, 0x1d, 0xc2, 0xcc,
359 0xee, 0x7d, 0x54, 0x0f, 0x27, 0x69, 0xa7, 0x27,
360 0x63, 0x30, 0x29, 0xd9, 0xc8, 0x84, 0xd8, 0xdf,
361 0x9f, 0x68, 0x8d, 0x04, 0xca, 0xa6, 0xc5, 0xc7,
362 0x7a, 0x5c, 0xc8, 0xd1, 0xcb, 0x4a, 0xec, 0xd0,
363 0xd8, 0x20, 0x69, 0xc5, 0x17, 0xcd, 0x78, 0xc8,
364 0x75, 0x23, 0x30, 0x69, 0xc9, 0xd4, 0xea, 0x5c,
365 0x4f, 0x6b, 0x86, 0x3f, 0x8b, 0xfe, 0xee, 0x44,
366 0xc9, 0x7c, 0xb7, 0xdd, 0x3e, 0xe5, 0xec, 0x54,
367 0x03, 0x3e, 0xaa, 0x82, 0xc6, 0xdf, 0xb2, 0x38,
368 0x0e, 0x5d, 0xb3, 0x88, 0xd9, 0xd3, 0x69, 0x5f,
369 0x8f, 0x70, 0x8a, 0x7e, 0x11, 0xd9, 0x1e, 0x7b,
370 0x38, 0xf1, 0x42, 0x1a, 0xc0, 0x35, 0xf5, 0xc7,
371 0x36, 0x85, 0xf5, 0xf7, 0xb8, 0x7e, 0xc7, 0xef,
372 0x18, 0xf1, 0x63, 0xd6, 0x7a, 0xc6, 0xc9, 0x0e,
373 0x4d, 0x69, 0x4f, 0x84, 0xef, 0x26, 0x41, 0x0c,
374 0xec, 0xc7, 0xe0, 0x7e, 0x3c, 0x67, 0x01, 0x4c,
375 0x62, 0x1a, 0x20, 0x6f, 0xee, 0x47, 0x4d, 0xc0,
376 0x99, 0x13, 0x8d, 0x91, 0x4a, 0x26, 0xd4, 0x37,
377 0x28, 0x90, 0x58, 0x75, 0x66, 0x2b, 0x0a, 0xdf,
378 0xda, 0xee, 0x92, 0x25, 0x90, 0x62, 0x39, 0x9e,
379 0x44, 0x98, 0xad, 0xc1, 0x88, 0xed, 0xe4, 0xb4,
380 0xaf, 0xf5, 0x8c, 0x9b, 0x48, 0x4d, 0x56, 0x60,
381 0x97, 0x0f, 0x61, 0x59, 0x9e, 0xa6, 0x27, 0xfe,
382 0xc1, 0x91, 0x15, 0x38, 0xb8, 0x0f, 0xae, 0x61,
383 0x7d, 0x26, 0x13, 0x5a, 0x73, 0xff, 0x1c, 0xa3,
384 0x61, 0x04, 0x58, 0x48, 0x55, 0x44, 0x11, 0xfe,
385 0x15, 0xca, 0xc3, 0xbd, 0xca, 0xc5, 0xb4, 0x40,
386 0x5d, 0x1b, 0x7f, 0x39, 0xb5, 0x9c, 0x35, 0xec,
387 0x61, 0x15, 0x32, 0x32, 0xb8, 0x4e, 0x40, 0x9f,
388 0x17, 0x1f, 0x0a, 0x4d, 0xa9, 0x91, 0xef, 0xb7,
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606 0x6c, 0x26, 0x52, 0xc3, 0xb3, 0xd4, 0x67, 0xf5,
607 0xe3, 0x04, 0xb7, 0xf4, 0xcb, 0x80, 0xb8, 0xcb,
608 0x77, 0x56, 0x3e, 0xaa, 0x57, 0x54, 0xee, 0xb4,
609 0x2c, 0x67, 0xcf, 0xf2, 0xdc, 0xbe, 0x55, 0xf9,
610 0x43, 0x1f, 0x6e, 0x22, 0x97, 0x67, 0x7f, 0xc4,
611 0xef, 0xb1, 0x26, 0x31, 0x1e, 0x27, 0xdf, 0x41,
612 0x80, 0x47, 0x6c, 0xe2, 0xfa, 0xa9, 0x8c, 0x2a,
613 0xf6, 0xf2, 0xab, 0xf0, 0x15, 0xda, 0x6c, 0xc8,
614 0xfe, 0xb5, 0x23, 0xde, 0xa9, 0x05, 0x3f, 0x06,
615 0x54, 0x4c, 0xcd, 0xe1, 0xab, 0xfc, 0x0e, 0x62,
616 0x33, 0x31, 0x73, 0x2c, 0x76, 0xcb, 0xb4, 0x47,
617 0x1e, 0x20, 0xad, 0xd8, 0xf2, 0x31, 0xdd, 0xc4,
618 0x8b, 0x0c, 0x77, 0xbe, 0xe1, 0x8b, 0x26, 0x00,
619 0x02, 0x58, 0xd6, 0x8d, 0xef, 0xad, 0x74, 0x67,
620 0xab, 0x3f, 0xef, 0xcb, 0x6f, 0xb0, 0xcc, 0x81,
621 0x44, 0x4c, 0xaf, 0xe9, 0x49, 0x4f, 0xdb, 0xa0,
622 0x25, 0xa4, 0xf0, 0x89, 0xf1, 0xbe, 0xd8, 0x10,
623 0xff, 0xb1, 0x3b, 0x4b, 0xfa, 0x98, 0xf5, 0x79,
624 0x6d, 0x1e, 0x69, 0x4d, 0x57, 0xb1, 0xc8, 0x19,
625 0x1b, 0xbd, 0x1e, 0x8c, 0x84, 0xb7, 0x7b, 0xe8,
626 0xd2, 0x2d, 0x09, 0x41, 0x41, 0x37, 0x3d, 0xb1,
627 0x6f, 0x26, 0x5d, 0x71, 0x16, 0x3d, 0xb7, 0x83,
628 0x27, 0x2c, 0xa7, 0xb6, 0x50, 0xbd, 0x91, 0x86,
629 0xab, 0x24, 0xa1, 0x38, 0xfd, 0xea, 0x71, 0x55,
630 0x7e, 0x9a, 0x07, 0x77, 0x4b, 0xfa, 0x61, 0x66,
631 0x20, 0x1e, 0x28, 0x95, 0x18, 0x1b, 0xa4, 0xa0,
632 0xfd, 0xc0, 0x89, 0x72, 0x43, 0xd9, 0x3b, 0x49,
633 0x5a, 0x3f, 0x9d, 0xbf, 0xdb, 0xb4, 0x46, 0xea,
634 0x42, 0x01, 0x77, 0x23, 0x68, 0x95, 0xb6, 0x24,
635 0xb3, 0xa8, 0x6c, 0x28, 0x3b, 0x11, 0x40, 0x7e,
636 0x18, 0x65, 0x6d, 0xd8, 0x24, 0x42, 0x7d, 0x88,
637 0xc0, 0x52, 0xd9, 0x05, 0xe4, 0x95, 0x90, 0x87,
638 0x8c, 0xf4, 0xd0, 0x6b, 0xb9, 0x83, 0x99, 0x34,
639 0x6d, 0xfe, 0x54, 0x40, 0x94, 0x52, 0x21, 0x4f,
640 0x14, 0x25, 0xc5, 0xd6, 0x5e, 0x95, 0xdc, 0x0a,
641 0x2b, 0x89, 0x20, 0x11, 0x84, 0x48, 0xd6, 0x3a,
642 0xcd, 0x5c, 0x24, 0xad, 0x62, 0xe3, 0xb1, 0x93,
643 0x25, 0x8d, 0xcd, 0x7e, 0xfc, 0x27, 0xa3, 0x37,
644 0xfd, 0x84, 0xfc, 0x1b, 0xb2, 0xf1, 0x27, 0x38,
645 0x5a, 0xb7, 0xfc, 0xf2, 0xfa, 0x95, 0x66, 0xd4,
646 0xfb, 0xba, 0xa7, 0xd7, 0xa3, 0x72, 0x69, 0x48,
647 0x48, 0x8c, 0xeb, 0x28, 0x89, 0xfe, 0x33, 0x65,
648 0x5a, 0x36, 0x01, 0x7e, 0x06, 0x79, 0x0a, 0x09,
649 0x3b, 0x74, 0x11, 0x9a, 0x6e, 0xbf, 0xd4, 0x9e,
650 0x58, 0x90, 0x49, 0x4f, 0x4d, 0x08, 0xd4, 0xe5,
651 0x4a, 0x09, 0x21, 0xef, 0x8b, 0xb8, 0x74, 0x3b,
652 0x91, 0xdd, 0x36, 0x85, 0x60, 0x2d, 0xfa, 0xd4,
653 0x45, 0x7b, 0x45, 0x53, 0xf5, 0x47, 0x87, 0x7e,
654 0xa6, 0x37, 0xc8, 0x78, 0x7a, 0x68, 0x9d, 0x8d,
655 0x65, 0x2c, 0x0e, 0x91, 0x5c, 0xa2, 0x60, 0xf0,
656 0x8e, 0x3f, 0xe9, 0x1a, 0xcd, 0xaa, 0xe7, 0xd5,
657 0x77, 0x18, 0xaf, 0xc9, 0xbc, 0x18, 0xea, 0x48,
658 0x1b, 0xfb, 0x22, 0x48, 0x70, 0x16, 0x29, 0x9e,
659 0x5b, 0xc1, 0x2c, 0x66, 0x23, 0xbc, 0xf0, 0x1f,
660 0xef, 0xaf, 0xe4, 0xd6, 0x04, 0x19, 0x82, 0x7a,
661 0x0b, 0xba, 0x4b, 0x46, 0xb1, 0x6a, 0x85, 0x5d,
662 0xb4, 0x73, 0xd6, 0x21, 0xa1, 0x71, 0x60, 0x14,
663 0xee, 0x0a, 0x77, 0xc4, 0x66, 0x2e, 0xf9, 0x69,
664 0x30, 0xaf, 0x41, 0x0b, 0xc8, 0x83, 0x3c, 0x53,
665 0x99, 0x19, 0x27, 0x46, 0xf7, 0x41, 0x6e, 0x56,
666 0xdc, 0x94, 0x28, 0x67, 0x4e, 0xb7, 0x25, 0x48,
667 0x8a, 0xc2, 0xe0, 0x60, 0x96, 0xcc, 0x18, 0xf4,
668 0x84, 0xdd, 0xa7, 0x5e, 0x3e, 0x05, 0x0b, 0x26,
669 0x26, 0xb2, 0x5c, 0x1f, 0x57, 0x1a, 0x04, 0x7e,
670 0x6a, 0xe3, 0x2f, 0xb4, 0x35, 0xb6, 0x38, 0x40,
671 0x40, 0xcd, 0x6f, 0x87, 0x2e, 0xef, 0xa3, 0xd7,
672 0xa9, 0xc2, 0xe8, 0x0d, 0x27, 0xdf, 0x44, 0x62,
673 0x99, 0xa0, 0xfc, 0xcf, 0x81, 0x78, 0xcb, 0xfe,
674 0xe5, 0xa0, 0x03, 0x4e, 0x6c, 0xd7, 0xf4, 0xaf,
675 0x7a, 0xbb, 0x61, 0x82, 0xfe, 0x71, 0x89, 0xb2,
676 0x22, 0x7c, 0x8e, 0x83, 0x04, 0xce, 0xf6, 0x5d,
677 0x84, 0x8f, 0x95, 0x6a, 0x7f, 0xad, 0xfd, 0x32,
678 0x9c, 0x5e, 0xe4, 0x9c, 0x89, 0x60, 0x54, 0xaa,
679 0x96, 0x72, 0xd2, 0xd7, 0x36, 0x85, 0xa9, 0x45,
680 0xd2, 0x2a, 0xa1, 0x81, 0x49, 0x6f, 0x7e, 0x04,
681 0xfa, 0xe2, 0xfe, 0x90, 0x26, 0x77, 0x5a, 0x33,
682 0xb8, 0x04, 0x9a, 0x7a, 0xe6, 0x4c, 0x4f, 0xad,
683 0x72, 0x96, 0x08, 0x28, 0x58, 0x13, 0xf8, 0xc4,
684 0x1c, 0xf0, 0xc3, 0x45, 0x95, 0x49, 0x20, 0x8c,
685 0x9f, 0x39, 0x70, 0xe1, 0x77, 0xfe, 0xd5, 0x4b,
686 0xaf, 0x86, 0xda, 0xef, 0x22, 0x06, 0x83, 0x36,
687 0x29, 0x12, 0x11, 0x40, 0xbc, 0x3b, 0x86, 0xaa,
688 0xaa, 0x65, 0x60, 0xc3, 0x80, 0xca, 0xed, 0xa9,
689 0xf3, 0xb0, 0x79, 0x96, 0xa2, 0x55, 0x27, 0x28,
690 0x55, 0x73, 0x26, 0xa5, 0x50, 0xea, 0x92, 0x4b,
691 0x3c, 0x5c, 0x82, 0x33, 0xf0, 0x01, 0x3f, 0x03,
692 0xc1, 0x08, 0x05, 0xbf, 0x98, 0xf4, 0x9b, 0x6d,
693 0xa5, 0xa8, 0xb4, 0x82, 0x0c, 0x06, 0xfa, 0xff,
694 0x2d, 0x08, 0xf3, 0x05, 0x4f, 0x57, 0x2a, 0x39,
695 0xd4, 0x83, 0x0d, 0x75, 0x51, 0xd8, 0x5b, 0x1b,
696 0xd3, 0x51, 0x5a, 0x32, 0x2a, 0x9b, 0x32, 0xb2,
697 0xf2, 0xa4, 0x96, 0x12, 0xf2, 0xae, 0x40, 0x34,
698 0x67, 0xa8, 0xf5, 0x44, 0xd5, 0x35, 0x53, 0xfe,
699 0xa3, 0x60, 0x96, 0x63, 0x0f, 0x1f, 0x6e, 0xb0,
700 0x5a, 0x42, 0xa6, 0xfc, 0x51, 0x0b, 0x60, 0x27,
701 0xbc, 0x06, 0x71, 0xed, 0x65, 0x5b, 0x23, 0x86,
702 0x4a, 0x07, 0x3b, 0x22, 0x07, 0x46, 0xe6, 0x90,
703 0x3e, 0xf3, 0x25, 0x50, 0x1b, 0x4c, 0x7f, 0x03,
704 0x08, 0xa8, 0x36, 0x6b, 0x87, 0xe5, 0xe3, 0xdb,
705 0x9a, 0x38, 0x83, 0xff, 0x9f, 0x1a, 0x9f, 0x57,
706 0xa4, 0x2a, 0xf6, 0x37, 0xbc, 0x1a, 0xff, 0xc9,
707 0x1e, 0x35, 0x0c, 0xc3, 0x7c, 0xa3, 0xb2, 0xe5,
708 0xd2, 0xc6, 0xb4, 0x57, 0x47, 0xe4, 0x32, 0x16,
709 0x6d, 0xa9, 0xae, 0x64, 0xe6, 0x2d, 0x8d, 0xc5,
710 0x8d, 0x50, 0x8e, 0xe8, 0x1a, 0x22, 0x34, 0x2a,
711 0xd9, 0xeb, 0x51, 0x90, 0x4a, 0xb1, 0x41, 0x7d,
712 0x64, 0xf9, 0xb9, 0x0d, 0xf6, 0x23, 0x33, 0xb0,
713 0x33, 0xf4, 0xf7, 0x3f, 0x27, 0x84, 0xc6, 0x0f,
714 0x54, 0xa5, 0xc0, 0x2e, 0xec, 0x0b, 0x3a, 0x48,
715 0x6e, 0x80, 0x35, 0x81, 0x43, 0x9b, 0x90, 0xb1,
716 0xd0, 0x2b, 0xea, 0x21, 0xdc, 0xda, 0x5b, 0x09,
717 0xf4, 0xcc, 0x10, 0xb4, 0xc7, 0xfe, 0x79, 0x51,
718 0xc3, 0xc5, 0xac, 0x88, 0x74, 0x84, 0x0b, 0x4b,
719 0xca, 0x79, 0x16, 0x29, 0xfb, 0x69, 0x54, 0xdf,
720 0x41, 0x7e, 0xe9, 0xc7, 0x8e, 0xea, 0xa5, 0xfe,
721 0xfc, 0x76, 0x0e, 0x90, 0xc4, 0x92, 0x38, 0xad,
722 0x7b, 0x48, 0xe6, 0x6e, 0xf7, 0x21, 0xfd, 0x4e,
723 0x93, 0x0a, 0x7b, 0x41, 0x83, 0x68, 0xfb, 0x57,
724 0x51, 0x76, 0x34, 0xa9, 0x6c, 0x00, 0xaa, 0x4f,
725 0x66, 0x65, 0x98, 0x4a, 0x4f, 0xa3, 0xa0, 0xef,
726 0x69, 0x3f, 0xe3, 0x1c, 0x92, 0x8c, 0xfd, 0xd8,
727 0xe8, 0xde, 0x7c, 0x7f, 0x3e, 0x84, 0x8e, 0x69,
728 0x3c, 0xf1, 0xf2, 0x05, 0x46, 0xdc, 0x2f, 0x9d,
729 0x5e, 0x6e, 0x4c, 0xfb, 0xb5, 0x99, 0x2a, 0x59,
730 0x63, 0xc1, 0x34, 0xbc, 0x57, 0xc0, 0x0d, 0xb9,
731 0x61, 0x25, 0xf3, 0x33, 0x23, 0x51, 0xb6, 0x0d,
732 0x07, 0xa6, 0xab, 0x94, 0x4a, 0xb7, 0x2a, 0xea,
733 0xee, 0xac, 0xa3, 0xc3, 0x04, 0x8b, 0x0e, 0x56,
734 0xfe, 0x44, 0xa7, 0x39, 0xe2, 0xed, 0xed, 0xb4,
735 0x22, 0x2b, 0xac, 0x12, 0x32, 0x28, 0x91, 0xd8,
736 0xa5, 0xab, 0xff, 0x5f, 0xe0, 0x4b, 0xda, 0x78,
737 0x17, 0xda, 0xf1, 0x01, 0x5b, 0xcd, 0xe2, 0x5f,
738 0x50, 0x45, 0x73, 0x2b, 0xe4, 0x76, 0x77, 0xf4,
739 0x64, 0x1d, 0x43, 0xfb, 0x84, 0x7a, 0xea, 0x91,
740 0xae, 0xf9, 0x9e, 0xb7, 0xb4, 0xb0, 0x91, 0x5f,
741 0x16, 0x35, 0x9a, 0x11, 0xb8, 0xc7, 0xc1, 0x8c,
742 0xc6, 0x10, 0x8d, 0x2f, 0x63, 0x4a, 0xa7, 0x57,
743 0x3a, 0x51, 0xd6, 0x32, 0x2d, 0x64, 0x72, 0xd4,
744 0x66, 0xdc, 0x10, 0xa6, 0x67, 0xd6, 0x04, 0x23,
745 0x9d, 0x0a, 0x11, 0x77, 0xdd, 0x37, 0x94, 0x17,
746 0x3c, 0xbf, 0x8b, 0x65, 0xb0, 0x2e, 0x5e, 0x66,
747 0x47, 0x64, 0xac, 0xdd, 0xf0, 0x84, 0xfd, 0x39,
748 0xfa, 0x15, 0x5d, 0xef, 0xae, 0xca, 0xc1, 0x36,
749 0xa7, 0x5c, 0xbf, 0xc7, 0x08, 0xc2, 0x66, 0x00,
750 0x74, 0x74, 0x4e, 0x27, 0x3f, 0x55, 0x8a, 0xb7,
751 0x38, 0x66, 0x83, 0x6d, 0xcf, 0x99, 0x9e, 0x60,
752 0x8f, 0xdd, 0x2e, 0x62, 0x22, 0x0e, 0xef, 0x0c,
753 0x98, 0xa7, 0x85, 0x74, 0x3b, 0x9d, 0xec, 0x9e,
754 0xa9, 0x19, 0x72, 0xa5, 0x7f, 0x2c, 0x39, 0xb7,
755 0x7d, 0xb7, 0xf1, 0x12, 0x65, 0x27, 0x4b, 0x5a,
756 0xde, 0x17, 0xfe, 0xad, 0x44, 0xf3, 0x20, 0x4d,
757 0xfd, 0xe4, 0x1f, 0xb5, 0x81, 0xb0, 0x36, 0x37,
758 0x08, 0x6f, 0xc3, 0x0c, 0xe9, 0x85, 0x98, 0x82,
759 0xa9, 0x62, 0x0c, 0xc4, 0x97, 0xc0, 0x50, 0xc8,
760 0xa7, 0x3c, 0x50, 0x9f, 0x43, 0xb9, 0xcd, 0x5e,
761 0x4d, 0xfa, 0x1c, 0x4b, 0x0b, 0xa9, 0x98, 0x85,
762 0x38, 0x92, 0xac, 0x8d, 0xe4, 0xad, 0x9b, 0x98,
763 0xab, 0xd9, 0x38, 0xac, 0x62, 0x52, 0xa3, 0x22,
764 0x63, 0x0f, 0xbf, 0x95, 0x48, 0xdf, 0x69, 0xe7,
765 0x8b, 0x33, 0xd5, 0xb2, 0xbd, 0x05, 0x49, 0x49,
766 0x9d, 0x57, 0x73, 0x19, 0x33, 0xae, 0xfa, 0x33,
767 0xf1, 0x19, 0xa8, 0x80, 0xce, 0x04, 0x9f, 0xbc,
768 0x1d, 0x65, 0x82, 0x1b, 0xe5, 0x3a, 0x51, 0xc8,
769 0x1c, 0x21, 0xe3, 0x5d, 0xf3, 0x7d, 0x9b, 0x2f,
770 0x2c, 0x1d, 0x4a, 0x7f, 0x9b, 0x68, 0x35, 0xa3,
771 0xb2, 0x50, 0xf7, 0x62, 0x79, 0xcd, 0xf4, 0x98,
772 0x4f, 0xe5, 0x63, 0x7c, 0x3e, 0x45, 0x31, 0x8c,
773 0x16, 0xa0, 0x12, 0xc8, 0x58, 0xce, 0x39, 0xa6,
774 0xbc, 0x54, 0xdb, 0xc5, 0xe0, 0xd5, 0xba, 0xbc,
775 0xb9, 0x04, 0xf4, 0x8d, 0xe8, 0x2f, 0x15, 0x9d,
776 };
777
778 /* 100 test cases */
779 static struct crc_test {
780 u32 crc; /* random starting crc */
781 u32 start; /* random 6 bit offset in buf */
782 u32 length; /* random 11 bit length of test */
783 u32 crc_le; /* expected crc32_le result */
784 u32 crc_be; /* expected crc32_be result */
785 u32 crc32c_le; /* expected crc32c_le result */
786 } test[] =
787 {
788 {0x674bf11d, 0x00000038, 0x00000542, 0x0af6d466, 0xd8b6e4c1,
789 0xf6e93d6c},
790 {0x35c672c6, 0x0000003a, 0x000001aa, 0xc6d3dfba, 0x28aaf3ad,
791 0x0fe92aca},
792 {0x496da28e, 0x00000039, 0x000005af, 0xd933660f, 0x5d57e81f,
793 0x52e1ebb8},
794 {0x09a9b90e, 0x00000027, 0x000001f8, 0xb45fe007, 0xf45fca9a,
795 0x0798af9a},
796 {0xdc97e5a9, 0x00000025, 0x000003b6, 0xf81a3562, 0xe0126ba2,
797 0x18eb3152},
798 {0x47c58900, 0x0000000a, 0x000000b9, 0x8e58eccf, 0xf3afc793,
799 0xd00d08c7},
800 {0x292561e8, 0x0000000c, 0x00000403, 0xa2ba8aaf, 0x0b797aed,
801 0x8ba966bc},
802 {0x415037f6, 0x00000003, 0x00000676, 0xa17d52e8, 0x7f0fdf35,
803 0x11d694a2},
804 {0x3466e707, 0x00000026, 0x00000042, 0x258319be, 0x75c484a2,
805 0x6ab3208d},
806 {0xafd1281b, 0x00000023, 0x000002ee, 0x4428eaf8, 0x06c7ad10,
807 0xba4603c5},
808 {0xd3857b18, 0x00000028, 0x000004a2, 0x5c430821, 0xb062b7cb,
809 0xe6071c6f},
810 {0x1d825a8f, 0x0000002b, 0x0000050b, 0xd2c45f0c, 0xd68634e0,
811 0x179ec30a},
812 {0x5033e3bc, 0x0000000b, 0x00000078, 0xa3ea4113, 0xac6d31fb,
813 0x0903beb8},
814 {0x94f1fb5e, 0x0000000f, 0x000003a2, 0xfbfc50b1, 0x3cfe50ed,
815 0x6a7cb4fa},
816 {0xc9a0fe14, 0x00000009, 0x00000473, 0x5fb61894, 0x87070591,
817 0xdb535801},
818 {0x88a034b1, 0x0000001c, 0x000005ad, 0xc1b16053, 0x46f95c67,
819 0x92bed597},
820 {0xf0f72239, 0x00000020, 0x0000026d, 0xa6fa58f3, 0xf8c2c1dd,
821 0x192a3f1b},
822 {0xcc20a5e3, 0x0000003b, 0x0000067a, 0x7740185a, 0x308b979a,
823 0xccbaec1a},
824 {0xce589c95, 0x0000002b, 0x00000641, 0xd055e987, 0x40aae25b,
825 0x7eabae4d},
826 {0x78edc885, 0x00000035, 0x000005be, 0xa39cb14b, 0x035b0d1f,
827 0x28c72982},
828 {0x9d40a377, 0x0000003b, 0x00000038, 0x1f47ccd2, 0x197fbc9d,
829 0xc3cd4d18},
830 {0x703d0e01, 0x0000003c, 0x000006f1, 0x88735e7c, 0xfed57c5a,
831 0xbca8f0e7},
832 {0x776bf505, 0x0000000f, 0x000005b2, 0x5cc4fc01, 0xf32efb97,
833 0x713f60b3},
834 {0x4a3e7854, 0x00000027, 0x000004b8, 0x8d923c82, 0x0cbfb4a2,
835 0xebd08fd5},
836 {0x209172dd, 0x0000003b, 0x00000356, 0xb89e9c2b, 0xd7868138,
837 0x64406c59},
838 {0x3ba4cc5b, 0x0000002f, 0x00000203, 0xe51601a9, 0x5b2a1032,
839 0x7421890e},
840 {0xfc62f297, 0x00000000, 0x00000079, 0x71a8e1a2, 0x5d88685f,
841 0xe9347603},
842 {0x64280b8b, 0x00000016, 0x000007ab, 0x0fa7a30c, 0xda3a455f,
843 0x1bef9060},
844 {0x97dd724b, 0x00000033, 0x000007ad, 0x5788b2f4, 0xd7326d32,
845 0x34720072},
846 {0x61394b52, 0x00000035, 0x00000571, 0xc66525f1, 0xcabe7fef,
847 0x48310f59},
848 {0x29b4faff, 0x00000024, 0x0000006e, 0xca13751e, 0x993648e0,
849 0x783a4213},
850 {0x29bfb1dc, 0x0000000b, 0x00000244, 0x436c43f7, 0x429f7a59,
851 0x9e8efd41},
852 {0x86ae934b, 0x00000035, 0x00000104, 0x0760ec93, 0x9cf7d0f4,
853 0xfc3d34a5},
854 {0xc4c1024e, 0x0000002e, 0x000006b1, 0x6516a3ec, 0x19321f9c,
855 0x17a52ae2},
856 {0x3287a80a, 0x00000026, 0x00000496, 0x0b257eb1, 0x754ebd51,
857 0x886d935a},
858 {0xa4db423e, 0x00000023, 0x0000045d, 0x9b3a66dc, 0x873e9f11,
859 0xeaaeaeb2},
860 {0x7a1078df, 0x00000015, 0x0000014a, 0x8c2484c5, 0x6a628659,
861 0x8e900a4b},
862 {0x6048bd5b, 0x00000006, 0x0000006a, 0x897e3559, 0xac9961af,
863 0xd74662b1},
864 {0xd8f9ea20, 0x0000003d, 0x00000277, 0x60eb905b, 0xed2aaf99,
865 0xd26752ba},
866 {0xea5ec3b4, 0x0000002a, 0x000004fe, 0x869965dc, 0x6c1f833b,
867 0x8b1fcd62},
868 {0x2dfb005d, 0x00000016, 0x00000345, 0x6a3b117e, 0xf05e8521,
869 0xf54342fe},
870 {0x5a214ade, 0x00000020, 0x000005b6, 0x467f70be, 0xcb22ccd3,
871 0x5b95b988},
872 {0xf0ab9cca, 0x00000032, 0x00000515, 0xed223df3, 0x7f3ef01d,
873 0x2e1176be},
874 {0x91b444f9, 0x0000002e, 0x000007f8, 0x84e9a983, 0x5676756f,
875 0x66120546},
876 {0x1b5d2ddb, 0x0000002e, 0x0000012c, 0xba638c4c, 0x3f42047b,
877 0xf256a5cc},
878 {0xd824d1bb, 0x0000003a, 0x000007b5, 0x6288653b, 0x3a3ebea0,
879 0x4af1dd69},
880 {0x0470180c, 0x00000034, 0x000001f0, 0x9d5b80d6, 0x3de08195,
881 0x56f0a04a},
882 {0xffaa3a3f, 0x00000036, 0x00000299, 0xf3a82ab8, 0x53e0c13d,
883 0x74f6b6b2},
884 {0x6406cfeb, 0x00000023, 0x00000600, 0xa920b8e8, 0xe4e2acf4,
885 0x085951fd},
886 {0xb24aaa38, 0x0000003e, 0x000004a1, 0x657cc328, 0x5077b2c3,
887 0xc65387eb},
888 {0x58b2ab7c, 0x00000039, 0x000002b4, 0x3a17ee7e, 0x9dcb3643,
889 0x1ca9257b},
890 {0x3db85970, 0x00000006, 0x000002b6, 0x95268b59, 0xb9812c10,
891 0xfd196d76},
892 {0x857830c5, 0x00000003, 0x00000590, 0x4ef439d5, 0xf042161d,
893 0x5ef88339},
894 {0xe1fcd978, 0x0000003e, 0x000007d8, 0xae8d8699, 0xce0a1ef5,
895 0x2c3714d9},
896 {0xb982a768, 0x00000016, 0x000006e0, 0x62fad3df, 0x5f8a067b,
897 0x58576548},
898 {0x1d581ce8, 0x0000001e, 0x0000058b, 0xf0f5da53, 0x26e39eee,
899 0xfd7c57de},
900 {0x2456719b, 0x00000025, 0x00000503, 0x4296ac64, 0xd50e4c14,
901 0xd5fedd59},
902 {0xfae6d8f2, 0x00000000, 0x0000055d, 0x057fdf2e, 0x2a31391a,
903 0x1cc3b17b},
904 {0xcba828e3, 0x00000039, 0x000002ce, 0xe3f22351, 0x8f00877b,
905 0x270eed73},
906 {0x13d25952, 0x0000000a, 0x0000072d, 0x76d4b4cc, 0x5eb67ec3,
907 0x91ecbb11},
908 {0x0342be3f, 0x00000015, 0x00000599, 0xec75d9f1, 0x9d4d2826,
909 0x05ed8d0c},
910 {0xeaa344e0, 0x00000014, 0x000004d8, 0x72a4c981, 0x2064ea06,
911 0x0b09ad5b},
912 {0xbbb52021, 0x0000003b, 0x00000272, 0x04af99fc, 0xaf042d35,
913 0xf8d511fb},
914 {0xb66384dc, 0x0000001d, 0x000007fc, 0xd7629116, 0x782bd801,
915 0x5ad832cc},
916 {0x616c01b6, 0x00000022, 0x000002c8, 0x5b1dab30, 0x783ce7d2,
917 0x1214d196},
918 {0xce2bdaad, 0x00000016, 0x0000062a, 0x932535c8, 0x3f02926d,
919 0x5747218a},
920 {0x00fe84d7, 0x00000005, 0x00000205, 0x850e50aa, 0x753d649c,
921 0xde8f14de},
922 {0xbebdcb4c, 0x00000006, 0x0000055d, 0xbeaa37a2, 0x2d8c9eba,
923 0x3563b7b9},
924 {0xd8b1a02a, 0x00000010, 0x00000387, 0x5017d2fc, 0x503541a5,
925 0x071475d0},
926 {0x3b96cad2, 0x00000036, 0x00000347, 0x1d2372ae, 0x926cd90b,
927 0x54c79d60},
928 {0xc94c1ed7, 0x00000005, 0x0000038b, 0x9e9fdb22, 0x144a9178,
929 0x4c53eee6},
930 {0x1aad454e, 0x00000025, 0x000002b2, 0xc3f6315c, 0x5c7a35b3,
931 0x10137a3c},
932 {0xa4fec9a6, 0x00000000, 0x000006d6, 0x90be5080, 0xa4107605,
933 0xaa9d6c73},
934 {0x1bbe71e2, 0x0000001f, 0x000002fd, 0x4e504c3b, 0x284ccaf1,
935 0xb63d23e7},
936 {0x4201c7e4, 0x00000002, 0x000002b7, 0x7822e3f9, 0x0cc912a9,
937 0x7f53e9cf},
938 {0x23fddc96, 0x00000003, 0x00000627, 0x8a385125, 0x07767e78,
939 0x13c1cd83},
940 {0xd82ba25c, 0x00000016, 0x0000063e, 0x98e4148a, 0x283330c9,
941 0x49ff5867},
942 {0x786f2032, 0x0000002d, 0x0000060f, 0xf201600a, 0xf561bfcd,
943 0x8467f211},
944 {0xfebe4e1f, 0x0000002a, 0x000004f2, 0x95e51961, 0xfd80dcab,
945 0x3f9683b2},
946 {0x1a6e0a39, 0x00000008, 0x00000672, 0x8af6c2a5, 0x78dd84cb,
947 0x76a3f874},
948 {0x56000ab8, 0x0000000e, 0x000000e5, 0x36bacb8f, 0x22ee1f77,
949 0x863b702f},
950 {0x4717fe0c, 0x00000000, 0x000006ec, 0x8439f342, 0x5c8e03da,
951 0xdc6c58ff},
952 {0xd5d5d68e, 0x0000003c, 0x000003a3, 0x46fff083, 0x177d1b39,
953 0x0622cc95},
954 {0xc25dd6c6, 0x00000024, 0x000006c0, 0x5ceb8eb4, 0x892b0d16,
955 0xe85605cd},
956 {0xe9b11300, 0x00000023, 0x00000683, 0x07a5d59a, 0x6c6a3208,
957 0x31da5f06},
958 {0x95cd285e, 0x00000001, 0x00000047, 0x7b3a4368, 0x0202c07e,
959 0xa1f2e784},
960 {0xd9245a25, 0x0000001e, 0x000003a6, 0xd33c1841, 0x1936c0d5,
961 0xb07cc616},
962 {0x103279db, 0x00000006, 0x0000039b, 0xca09b8a0, 0x77d62892,
963 0xbf943b6c},
964 {0x1cba3172, 0x00000027, 0x000001c8, 0xcb377194, 0xebe682db,
965 0x2c01af1c},
966 {0x8f613739, 0x0000000c, 0x000001df, 0xb4b0bc87, 0x7710bd43,
967 0x0fe5f56d},
968 {0x1c6aa90d, 0x0000001b, 0x0000053c, 0x70559245, 0xda7894ac,
969 0xf8943b2d},
970 {0xaabe5b93, 0x0000003d, 0x00000715, 0xcdbf42fa, 0x0c3b99e7,
971 0xe4d89272},
972 {0xf15dd038, 0x00000006, 0x000006db, 0x6e104aea, 0x8d5967f2,
973 0x7c2f6bbb},
974 {0x584dd49c, 0x00000020, 0x000007bc, 0x36b6cfd6, 0xad4e23b2,
975 0xabbf388b},
976 {0x5d8c9506, 0x00000020, 0x00000470, 0x4c62378e, 0x31d92640,
977 0x1dca1f4e},
978 {0xb80d17b0, 0x00000032, 0x00000346, 0x22a5bb88, 0x9a7ec89f,
979 0x5c170e23},
980 {0xdaf0592e, 0x00000023, 0x000007b0, 0x3cab3f99, 0x9b1fdd99,
981 0xc0e9d672},
982 {0x4793cc85, 0x0000000d, 0x00000706, 0xe82e04f6, 0xed3db6b7,
983 0xc18bdc86},
984 {0x82ebf64e, 0x00000009, 0x000007c3, 0x69d590a9, 0x9efa8499,
985 0xa874fcdd},
986 {0xb18a0319, 0x00000026, 0x000007db, 0x1cf98dcc, 0x8fa9ad6a,
987 0x9dc0bb48},
988 };
989
990 #include <linux/time.h>
991
992 static int __init crc32c_test(void)
993 {
994 int i;
995 int errors = 0;
996 int bytes = 0;
997 struct timespec start, stop;
998 u64 nsec;
999 unsigned long flags;
1000
1001 /* keep static to prevent cache warming code from
1002 * getting eliminated by the compiler */
1003 static u32 crc;
1004
1005 /* pre-warm the cache */
1006 for (i = 0; i < 100; i++) {
1007 bytes += 2*test[i].length;
1008
1009 crc ^= __crc32c_le(test[i].crc, test_buf +
1010 test[i].start, test[i].length);
1011 }
1012
1013 /* reduce OS noise */
1014 local_irq_save(flags);
1015 local_irq_disable();
1016
1017 getnstimeofday(&start);
1018 for (i = 0; i < 100; i++) {
1019 if (test[i].crc32c_le != __crc32c_le(test[i].crc, test_buf +
1020 test[i].start, test[i].length))
1021 errors++;
1022 }
1023 getnstimeofday(&stop);
1024
1025 local_irq_restore(flags);
1026 local_irq_enable();
1027
1028 nsec = stop.tv_nsec - start.tv_nsec +
1029 1000000000 * (stop.tv_sec - start.tv_sec);
1030
1031 pr_info("crc32c: CRC_LE_BITS = %d\n", CRC_LE_BITS);
1032
1033 if (errors)
1034 pr_warn("crc32c: %d self tests failed\n", errors);
1035 else {
1036 pr_info("crc32c: self tests passed, processed %d bytes in %lld nsec\n",
1037 bytes, nsec);
1038 }
1039
1040 return 0;
1041 }
1042
1043 static int __init crc32_test(void)
1044 {
1045 int i;
1046 int errors = 0;
1047 int bytes = 0;
1048 struct timespec start, stop;
1049 u64 nsec;
1050 unsigned long flags;
1051
1052 /* keep static to prevent cache warming code from
1053 * getting eliminated by the compiler */
1054 static u32 crc;
1055
1056 /* pre-warm the cache */
1057 for (i = 0; i < 100; i++) {
1058 bytes += 2*test[i].length;
1059
1060 crc ^= crc32_le(test[i].crc, test_buf +
1061 test[i].start, test[i].length);
1062
1063 crc ^= crc32_be(test[i].crc, test_buf +
1064 test[i].start, test[i].length);
1065 }
1066
1067 /* reduce OS noise */
1068 local_irq_save(flags);
1069 local_irq_disable();
1070
1071 getnstimeofday(&start);
1072 for (i = 0; i < 100; i++) {
1073 if (test[i].crc_le != crc32_le(test[i].crc, test_buf +
1074 test[i].start, test[i].length))
1075 errors++;
1076
1077 if (test[i].crc_be != crc32_be(test[i].crc, test_buf +
1078 test[i].start, test[i].length))
1079 errors++;
1080 }
1081 getnstimeofday(&stop);
1082
1083 local_irq_restore(flags);
1084 local_irq_enable();
1085
1086 nsec = stop.tv_nsec - start.tv_nsec +
1087 1000000000 * (stop.tv_sec - start.tv_sec);
1088
1089 pr_info("crc32: CRC_LE_BITS = %d, CRC_BE BITS = %d\n",
1090 CRC_LE_BITS, CRC_BE_BITS);
1091
1092 if (errors)
1093 pr_warn("crc32: %d self tests failed\n", errors);
1094 else {
1095 pr_info("crc32: self tests passed, processed %d bytes in %lld nsec\n",
1096 bytes, nsec);
1097 }
1098
1099 return 0;
1100 }
1101
1102 static int __init crc32test_init(void)
1103 {
1104 crc32_test();
1105 crc32c_test();
1106 return 0;
1107 }
1108
1109 static void __exit crc32_exit(void)
1110 {
1111 }
1112
1113 module_init(crc32test_init);
1114 module_exit(crc32_exit);
1115 #endif /* CONFIG_CRC32_SELFTEST */
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