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-rw-r--r--lib/crc32test.c856
1 files changed, 856 insertions, 0 deletions
diff --git a/lib/crc32test.c b/lib/crc32test.c
new file mode 100644
index 000000000000..97d6a57cefcc
--- /dev/null
+++ b/lib/crc32test.c
@@ -0,0 +1,856 @@
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,
235 0x52, 0xeb, 0x23, 0x91, 0x88, 0x43, 0x13, 0x46,
236 0xf6, 0x1e, 0xb4, 0x1b, 0xf5, 0x8e, 0x3a, 0xb5,
237 0x3d, 0x00, 0xf6, 0xe5, 0x08, 0x3d, 0x5f, 0x39,
238 0xd3, 0x21, 0x69, 0xbc, 0x03, 0x22, 0x3a, 0xd2,
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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 local_irq_disable();
687
688 nsec = ktime_get_ns();
689 for (i = 0; i < 100; i++) {
690 if (test[i].crc32c_le != __crc32c_le(test[i].crc, test_buf +
691 test[i].start, test[i].length))
692 errors++;
693 }
694 nsec = ktime_get_ns() - nsec;
695
696 local_irq_restore(flags);
697 local_irq_enable();
698
699 pr_info("crc32c: CRC_LE_BITS = %d\n", CRC_LE_BITS);
700
701 if (errors)
702 pr_warn("crc32c: %d self tests failed\n", errors);
703 else {
704 pr_info("crc32c: self tests passed, processed %d bytes in %lld nsec\n",
705 bytes, nsec);
706 }
707
708 return 0;
709}
710
711static int __init crc32c_combine_test(void)
712{
713 int i, j;
714 int errors = 0, runs = 0;
715
716 for (i = 0; i < 10; i++) {
717 u32 crc_full;
718
719 crc_full = __crc32c_le(test[i].crc, test_buf + test[i].start,
720 test[i].length);
721 for (j = 0; j <= test[i].length; ++j) {
722 u32 crc1, crc2;
723 u32 len1 = j, len2 = test[i].length - j;
724
725 crc1 = __crc32c_le(test[i].crc, test_buf +
726 test[i].start, len1);
727 crc2 = __crc32c_le(0, test_buf + test[i].start +
728 len1, len2);
729
730 if (!(crc_full == __crc32c_le_combine(crc1, crc2, len2) &&
731 crc_full == test[i].crc32c_le))
732 errors++;
733 runs++;
734 cond_resched();
735 }
736 }
737
738 if (errors)
739 pr_warn("crc32c_combine: %d/%d self tests failed\n", errors, runs);
740 else
741 pr_info("crc32c_combine: %d self tests passed\n", runs);
742
743 return 0;
744}
745
746static int __init crc32_test(void)
747{
748 int i;
749 int errors = 0;
750 int bytes = 0;
751 u64 nsec;
752 unsigned long flags;
753
754 /* keep static to prevent cache warming code from
755 * getting eliminated by the compiler */
756 static u32 crc;
757
758 /* pre-warm the cache */
759 for (i = 0; i < 100; i++) {
760 bytes += 2*test[i].length;
761
762 crc ^= crc32_le(test[i].crc, test_buf +
763 test[i].start, test[i].length);
764
765 crc ^= crc32_be(test[i].crc, test_buf +
766 test[i].start, test[i].length);
767 }
768
769 /* reduce OS noise */
770 local_irq_save(flags);
771 local_irq_disable();
772
773 nsec = ktime_get_ns();
774 for (i = 0; i < 100; i++) {
775 if (test[i].crc_le != crc32_le(test[i].crc, test_buf +
776 test[i].start, test[i].length))
777 errors++;
778
779 if (test[i].crc_be != crc32_be(test[i].crc, test_buf +
780 test[i].start, test[i].length))
781 errors++;
782 }
783 nsec = ktime_get_ns() - nsec;
784
785 local_irq_restore(flags);
786 local_irq_enable();
787
788 pr_info("crc32: CRC_LE_BITS = %d, CRC_BE BITS = %d\n",
789 CRC_LE_BITS, CRC_BE_BITS);
790
791 if (errors)
792 pr_warn("crc32: %d self tests failed\n", errors);
793 else {
794 pr_info("crc32: self tests passed, processed %d bytes in %lld nsec\n",
795 bytes, nsec);
796 }
797
798 return 0;
799}
800
801static int __init crc32_combine_test(void)
802{
803 int i, j;
804 int errors = 0, runs = 0;
805
806 for (i = 0; i < 10; i++) {
807 u32 crc_full;
808
809 crc_full = crc32_le(test[i].crc, test_buf + test[i].start,
810 test[i].length);
811 for (j = 0; j <= test[i].length; ++j) {
812 u32 crc1, crc2;
813 u32 len1 = j, len2 = test[i].length - j;
814
815 crc1 = crc32_le(test[i].crc, test_buf +
816 test[i].start, len1);
817 crc2 = crc32_le(0, test_buf + test[i].start +
818 len1, len2);
819
820 if (!(crc_full == crc32_le_combine(crc1, crc2, len2) &&
821 crc_full == test[i].crc_le))
822 errors++;
823 runs++;
824 cond_resched();
825 }
826 }
827
828 if (errors)
829 pr_warn("crc32_combine: %d/%d self tests failed\n", errors, runs);
830 else
831 pr_info("crc32_combine: %d self tests passed\n", runs);
832
833 return 0;
834}
835
836static int __init crc32test_init(void)
837{
838 crc32_test();
839 crc32c_test();
840
841 crc32_combine_test();
842 crc32c_combine_test();
843
844 return 0;
845}
846
847static void __exit crc32_exit(void)
848{
849}
850
851module_init(crc32test_init);
852module_exit(crc32_exit);
853
854MODULE_AUTHOR("Matt Domsch <Matt_Domsch@dell.com>");
855MODULE_DESCRIPTION("CRC32 selftest");
856MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-31 14:06:24 -0400