[1/2] lib/crct10diftest.c add selftests for crct10dif

Commit Message

Zhihang Shao Nov. 13, 2024, 10:40 a.m. UTC

Add selftests for kernel's implementation of CRC-T10DIF algorithm.
The test data includes 100 randomly generated test-cases.
The selftest file is similar to what is done in lib/crc32test.c, and is
used to verify the correctness and measure performance improvement of
the CRC-T10DIF algorithm with zbc extension optimization.

Signed-off-by: Zhihang Shao <[e-mail]>
---
 lib/Kconfig         |   9 +
 lib/Makefile        |   1 +
 lib/crct10diftest.c | 687 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 697 insertions(+)
 create mode 100644 lib/crct10diftest.c

Comments

Eric Biggers Nov. 13, 2024, 1:46 p.m. UTC | #1

On Wed, Nov 13, 2024 at 10:40:35AM +0000, Zhihang Shao wrote:
> Add selftests for kernel's implementation of CRC-T10DIF algorithm.
> The test data includes 100 randomly generated test-cases.
> The selftest file is similar to what is done in lib/crc32test.c, and is
> used to verify the correctness and measure performance improvement of
> the CRC-T10DIF algorithm with zbc extension optimization.
> 
> Signed-off-by: Zhihang Shao <[e-mail]>
> ---
>  lib/Kconfig         |   9 +
>  lib/Makefile        |   1 +
>  lib/crct10diftest.c | 687 ++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 697 insertions(+)
>  create mode 100644 lib/crct10diftest.c

crc_t10dif_update() goes through the crypto API, so for now you should be able
to just use the crypto self-tests instead, i.e. boot a kernel with
CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y.

I am planning to fix the crct10dif library to be optimized directly (without
going through the crypto API), like what I am doing for crc32.  At that point a
crct10dif library test will be needed, and I'll add one then.

There are also several issues with the existing crc32 test which you're copying,
and which I'd like to address when adding a new test.  For example, the test
does not cover short lengths, and it runs the tests with IRQs disabled which
makes optimized code not used on many architectures.

- Eric

Patch

diff --git a/lib/Kconfig b/lib/Kconfig
index b38849af6f13..e0e488fd1307 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -187,6 +187,15 @@  config CRC32_SELFTEST
 	  and crc32_be over byte strings with random alignment and length
 	  and computes the total elapsed time and number of bytes processed.
 
+config CRCT10DIF_SELFTEST
+	tristate "CRCT10DIF perform self test on init"
+	depends on CRC_T10DIF
+	help
+	  This option enables the CRCT10DIF library functions to perform a
+	  self test on initialization. The self test computes crc_t10dif_update
+	  over byte strings with random alignment and length
+	  and computes the total elapsed time and number of bytes processed.
+
 choice
 	prompt "CRC32 implementation"
 	depends on CRC32
diff --git a/lib/Makefile b/lib/Makefile
index 773adf88af41..6dac65a3778c 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -161,6 +161,7 @@  obj-$(CONFIG_CRC_ITU_T)	+= crc-itu-t.o
 obj-$(CONFIG_CRC32)	+= crc32.o
 obj-$(CONFIG_CRC64)     += crc64.o
 obj-$(CONFIG_CRC32_SELFTEST)	+= crc32test.o
+obj-$(CONFIG_CRCT10DIF_SELFTEST)	+= crct10diftest.o
 obj-$(CONFIG_CRC4)	+= crc4.o
 obj-$(CONFIG_CRC7)	+= crc7.o
 obj-$(CONFIG_LIBCRC32C)	+= libcrc32c.o
diff --git a/lib/crct10diftest.c b/lib/crct10diftest.c
new file mode 100644
index 000000000000..9541892eb12c
--- /dev/null
+++ b/lib/crct10diftest.c
@@ -0,0 +1,687 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * CRC-T10DIF selftests
+ *
+ * Copyright (C) 2024 Institute of Software, CAS.
+ */
+#include <linux/crc-t10dif.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/time.h>
+
+static struct crc_test {
+	u16 crc; /* random starting crc*/
+	u16 start; /* random 6 bit offset in buf*/
+	u16 length; /* random 11 bit length of test*/
+	u16 crct10dif; /* expected crc_t10dif result*/
+} tests[] = {
+	{0xdead, 0x0009, 0x0030, 0x8419},
+	{0x37c8, 0x0014, 0x03f0, 0xf4b5},
+	{0x8f45, 0x002d, 0x03b0, 0x6937},
+	{0x4201, 0x0020, 0x0719, 0x665e},
+	{0xe102, 0x0037, 0x0599, 0xb45b},
+	{0xa65d, 0x0008, 0x024d, 0x95d3},
+	{0xadba, 0x0001, 0x0799, 0xbb14},
+	{0x4407, 0x0038, 0x06a3, 0xb401},
+	{0x5188, 0x000c, 0x03f5, 0xf00c},
+	{0x5120, 0x0025, 0x0255, 0x858b},
+	{0x6a92, 0x0006, 0x0559, 0x159a},
+	{0xfa66, 0x0032, 0x0561, 0x0916},
+	{0x40a9, 0x003a, 0x0179, 0x0eb5},
+	{0x3c82, 0x0006, 0x02f0, 0x598c},
+	{0xbe07, 0x000a, 0x0085, 0xb228},
+	{0x7942, 0x0029, 0x033b, 0x0cc4},
+	{0x1275, 0x0030, 0x041b, 0x87b3},
+	{0xb715, 0x0030, 0x03fa, 0xcda8},
+	{0x7476, 0x0013, 0x063b, 0x51e8},
+	{0xa5c5, 0x001c, 0x0245, 0x53af},
+	{0x3e97, 0x003e, 0x0575, 0xdacf},
+	{0xdf84, 0x0025, 0x0556, 0x1154},
+	{0x72ef, 0x001b, 0x079b, 0x07b3},
+	{0x6d04, 0x0016, 0x06fc, 0x8cdf},
+	{0xe206, 0x0017, 0x030e, 0xe609},
+	{0xc188, 0x0008, 0x02c3, 0x504b},
+	{0x705b, 0x003f, 0x04db, 0xcf7c},
+	{0x3c9b, 0x0021, 0x048f, 0x09f9},
+	{0x32df, 0x0004, 0x064c, 0x73fb},
+	{0x0269, 0x0022, 0x07f0, 0xa49e},
+	{0x717d, 0x000b, 0x018b, 0x2ba0},
+	{0xc261, 0x0007, 0x05fb, 0x726e},
+	{0x239f, 0x000a, 0x0582, 0xa055},
+	{0x6812, 0x0006, 0x0325, 0x6399},
+	{0x8145, 0x0001, 0x068e, 0x8a81},
+	{0xaf22, 0x001d, 0x0113, 0xeb59},
+	{0xb521, 0x001f, 0x0465, 0x0648},
+	{0x8b01, 0x0015, 0x04e4, 0xdbf6},
+	{0xf3e0, 0x002f, 0x0300, 0x01b3},
+	{0xa6f6, 0x003c, 0x02a8, 0x56f4},
+	{0x7a06, 0x002b, 0x07bc, 0x5df1},
+	{0x9071, 0x0022, 0x0286, 0x6d8a},
+	{0x8ae3, 0x0015, 0x0796, 0x4fa0},
+	{0x9432, 0x0029, 0x0406, 0xfb2d},
+	{0x3808, 0x002c, 0x00df, 0xb9b6},
+	{0xb4c1, 0x0003, 0x0788, 0x3e7e},
+	{0xbc32, 0x0008, 0x06e3, 0x9c4f},
+	{0xd384, 0x000c, 0x05be, 0x6505},
+	{0x51b7, 0x003a, 0x07a3, 0x4216},
+	{0xa85c, 0x0029, 0x03de, 0xdcfe},
+	{0x933e, 0x0034, 0x0544, 0xecac},
+	{0xcc1e, 0x000b, 0x00c5, 0x832b},
+	{0x99b7, 0x0024, 0x0730, 0x9541},
+	{0x9f67, 0x0038, 0x071a, 0x762b},
+	{0x2140, 0x003e, 0x06c1, 0xe6b5},
+	{0x0f8a, 0x003f, 0x024f, 0xfcdd},
+	{0xc9fa, 0x0032, 0x0369, 0x9192},
+	{0x5c1c, 0x0007, 0x0596, 0x074a},
+	{0xfabb, 0x001a, 0x06cb, 0xd699},
+	{0x9c25, 0x0010, 0x0300, 0x3571},
+	{0xf934, 0x0030, 0x0455, 0xd0ce},
+	{0x18e8, 0x002f, 0x0434, 0x8c42},
+	{0xd16d, 0x0036, 0x06ed, 0x247a},
+	{0x9f75, 0x003d, 0x0238, 0x2508},
+	{0xe32f, 0x0021, 0x03c6, 0x358a},
+	{0xbce8, 0x001c, 0x06a6, 0x11bd},
+	{0x9436, 0x0031, 0x067d, 0x4512},
+	{0xcd02, 0x003d, 0x0638, 0x2bef},
+	{0xdbad, 0x000d, 0x06d2, 0x4e67},
+	{0x65fd, 0x0006, 0x06be, 0xf178},
+	{0x05fc, 0x002b, 0x0062, 0x509d},
+	{0xcee8, 0x001a, 0x06e1, 0xccb1},
+	{0xe03c, 0x0027, 0x0163, 0x2633},
+	{0x6c03, 0x0009, 0x04c8, 0xfec2},
+	{0x657b, 0x0006, 0x0096, 0x1c5a},
+	{0x1cc3, 0x000e, 0x00b3, 0xd233},
+	{0x815c, 0x0005, 0x0506, 0xc241},
+	{0xaa8c, 0x0004, 0x06c3, 0x0e76},
+	{0x7970, 0x0025, 0x05fa, 0x4d7a},
+	{0x91c0, 0x001c, 0x0270, 0x40af},
+	{0x4f83, 0x0014, 0x0720, 0x9d03},
+	{0x0bdd, 0x0029, 0x03c1, 0xac55},
+	{0x372f, 0x0017, 0x03d5, 0x41d2},
+	{0x8325, 0x0009, 0x0463, 0x2add},
+	{0xf40e, 0x002a, 0x03da, 0x45ea},
+	{0x552e, 0x001e, 0x0723, 0x225a},
+	{0x41c3, 0x001d, 0x06f7, 0x1d61},
+	{0x09f9, 0x0027, 0x057f, 0x5cc0},
+	{0xfd3b, 0x0020, 0x0504, 0x8048},
+	{0xb889, 0x0005, 0x0271, 0x43e0},
+	{0xbd1c, 0x0007, 0x03aa, 0x7253},
+	{0xbad0, 0x000e, 0x04c3, 0x9855},
+	{0xc978, 0x001d, 0x0579, 0x2ab0},
+	{0x3b3b, 0x001c, 0x0545, 0x521a},
+	{0x41b9, 0x003c, 0x0082, 0x49b7},
+	{0x15a3, 0x0002, 0x0530, 0xf48a},
+	{0xeaa2, 0x0034, 0x03f8, 0x3aad},
+	{0x8af9, 0x0029, 0x02e3, 0x4b3d},
+	{0xb4b0, 0x000d, 0x0056, 0xecee},
+	{0x669b, 0x0019, 0x065f, 0x28d8},
+};
+
+static const u8 __aligned(8) test_buf[] __initconst = {
+	0x4d, 0x87, 0x5f, 0x10, 0x90, 0xd5, 0x31, 0x96,
+	0x3f, 0x5a, 0x50, 0xc7, 0x30, 0x80, 0x5f, 0x2c,
+	0x78, 0xf0, 0xa2, 0xb5, 0xfb, 0xf9, 0x83, 0x14,
+	0xe9, 0xb6, 0xaa, 0xe6, 0x39, 0x12, 0x0b, 0x87,
+	0x99, 0x6a, 0x97, 0x2a, 0x3f, 0xc8, 0xc0, 0x7e,
+	0x22, 0x10, 0x45, 0x52, 0x90, 0xa4, 0x7e, 0x08,
+	0x94, 0x21, 0xbe, 0x8f, 0x1a, 0x41, 0xa3, 0x04,
+	0xf7, 0x4d, 0xea, 0x30, 0x5f, 0xf5, 0xb7, 0xf9,
+	0x60, 0x4e, 0x23, 0x9f, 0x16, 0xe3, 0x1e, 0x38,
+	0xf3, 0x63, 0x8b, 0x84, 0x08, 0x09, 0x8c, 0x9c,
+	0x2a, 0x4a, 0x2c, 0x45, 0x8b, 0xcf, 0x49, 0x82,
+	0x1d, 0x33, 0xb3, 0x7c, 0x29, 0x6a, 0x75, 0x89,
+	0xb9, 0x98, 0x28, 0xcf, 0x7b, 0x46, 0x08, 0x6f,
+	0xaa, 0x93, 0xf3, 0xb2, 0x9c, 0x7f, 0x4e, 0xc7,
+	0xca, 0x7a, 0x0c, 0x55, 0x4a, 0x55, 0xd8, 0x67,
+	0x88, 0x8b, 0xe3, 0xb1, 0xf5, 0x59, 0x3a, 0xae,
+	0xf1, 0x63, 0x7e, 0x6d, 0xa9, 0x86, 0xdc, 0x53,
+	0x19, 0xcf, 0x05, 0xb5, 0x4e, 0x54, 0x7c, 0x18,
+	0xce, 0x88, 0x6e, 0x18, 0xdd, 0x46, 0x7f, 0x66,
+	0xd1, 0x63, 0x17, 0xc6, 0xbc, 0x52, 0x75, 0xad,
+	0xb5, 0xf3, 0x1a, 0x5e, 0x79, 0xf6, 0xb2, 0x92,
+	0xc5, 0xb7, 0x47, 0x14, 0x0b, 0xc4, 0x2c, 0xda,
+	0x4c, 0x9a, 0xf2, 0x2a, 0xe0, 0x72, 0x90, 0xb1,
+	0xd5, 0xa7, 0x78, 0x91, 0xf9, 0xed, 0x3e, 0xae,
+	0xe0, 0x59, 0x0d, 0x59, 0x4f, 0xbf, 0xeb, 0x15,
+	0x76, 0x32, 0x29, 0x82, 0xf6, 0x55, 0x5c, 0x43,
+	0xf0, 0x4e, 0x6d, 0xd0, 0xc0, 0xfd, 0x82, 0x95,
+	0xa4, 0xfa, 0x26, 0x9e, 0xe7, 0x65, 0x4c, 0xc7,
+	0xbe, 0x59, 0x20, 0x0d, 0x18, 0x0b, 0x22, 0x8f,
+	0x3d, 0x4b, 0x11, 0x34, 0xa1, 0x6d, 0x77, 0x91,
+	0xbb, 0xe4, 0x61, 0x7c, 0xe1, 0xe3, 0x11, 0x85,
+	0xdd, 0x38, 0x23, 0xc4, 0x9d, 0x70, 0x8b, 0x5b,
+	0xc9, 0xab, 0x68, 0xe2, 0xb6, 0x8b, 0x71, 0xf4,
+	0xd6, 0x82, 0x28, 0x77, 0xef, 0x9f, 0x08, 0xaa,
+	0x83, 0x6a, 0x26, 0x64, 0x4d, 0x38, 0xe9, 0x2b,
+	0x70, 0x0d, 0xef, 0x0d, 0x7d, 0x7b, 0x68, 0x46,
+	0x26, 0xd0, 0x28, 0xdd, 0x5b, 0x99, 0xd1, 0x32,
+	0x1b, 0xf9, 0xa9, 0x0a, 0x98, 0xb2, 0xb5, 0x1b,
+	0x1c, 0xdb, 0x7f, 0x69, 0x13, 0x68, 0x94, 0x83,
+	0x75, 0x84, 0x90, 0xf2, 0xff, 0xf8, 0x39, 0x25,
+	0xc9, 0x61, 0x02, 0x24, 0xfb, 0xd3, 0x56, 0x16,
+	0xcc, 0x00, 0x21, 0x64, 0xb2, 0xd6, 0x7f, 0xce,
+	0xb1, 0xfe, 0x37, 0xc5, 0x67, 0xcc, 0x48, 0xdc,
+	0x50, 0xd9, 0xcf, 0x4f, 0xd1, 0x08, 0x74, 0x9a,
+	0x69, 0x77, 0xbf, 0x64, 0x4a, 0x15, 0x7b, 0x17,
+	0x15, 0x9c, 0x7b, 0xc7, 0x72, 0xfb, 0x95, 0x23,
+	0xf9, 0xcd, 0xe8, 0x60, 0x99, 0x31, 0x3d, 0xe9,
+	0x0a, 0x0c, 0x38, 0xdb, 0x14, 0xac, 0x76, 0x7d,
+	0x23, 0x35, 0xe2, 0x6e, 0x4a, 0x5d, 0x85, 0x60,
+	0xf9, 0x00, 0x27, 0x6b, 0xfb, 0xbd, 0x8e, 0xf5,
+	0x8a, 0x77, 0x55, 0x23, 0xa8, 0x92, 0x0c, 0xb2,
+	0x9e, 0x44, 0x8d, 0xb2, 0xf0, 0x03, 0x30, 0x14,
+	0x38, 0x12, 0x82, 0x83, 0x6f, 0x07, 0xe3, 0x68,
+	0x07, 0x0a, 0xd3, 0x03, 0xc7, 0x61, 0xf8, 0x51,
+	0xd8, 0x4d, 0x74, 0x80, 0xe0, 0x80, 0x32, 0x7e,
+	0xc4, 0xc0, 0x31, 0xb5, 0xc3, 0x61, 0xc9, 0xfc,
+	0x73, 0x4b, 0x7f, 0xe2, 0x52, 0x62, 0x4a, 0x59,
+	0x6c, 0x1d, 0x5c, 0x34, 0x7e, 0x54, 0x85, 0x57,
+	0xa2, 0xfa, 0xd7, 0x82, 0x7a, 0x0a, 0x00, 0x3f,
+	0xca, 0x31, 0xf4, 0x8d, 0x92, 0xbd, 0x89, 0x05,
+	0x08, 0x08, 0xe7, 0x5a, 0x6a, 0x31, 0xb3, 0xd7,
+	0x4e, 0x10, 0x0b, 0xcd, 0x64, 0x90, 0x24, 0x06,
+	0x8a, 0xfb, 0x88, 0x05, 0x05, 0x89, 0x44, 0xcf,
+	0xba, 0x38, 0x5d, 0x4d, 0xf5, 0xe6, 0x52, 0xfd,
+	0xef, 0x3a, 0x57, 0x59, 0x6b, 0x0a, 0x30, 0xba,
+	0x1a, 0x3b, 0x87, 0x7f, 0xcc, 0xab, 0x85, 0x56,
+	0xa6, 0x0e, 0x5b, 0xac, 0x97, 0x9f, 0x7b, 0x51,
+	0xd7, 0xd8, 0x9e, 0xcc, 0xbf, 0xf1, 0xc9, 0xae,
+	0x2b, 0x20, 0x07, 0x96, 0x2b, 0x38, 0x50, 0x45,
+	0x73, 0xd7, 0xc4, 0x3f, 0x82, 0x4a, 0x96, 0x29,
+	0x58, 0xf1, 0xd5, 0xef, 0x91, 0x50, 0x40, 0x68,
+	0x29, 0xdf, 0x35, 0xe8, 0xd0, 0xfe, 0x96, 0xfb,
+	0x1f, 0x9d, 0x91, 0x4a, 0xd5, 0xe2, 0x8f, 0x49,
+	0xb9, 0x54, 0x88, 0x3c, 0x9e, 0x1e, 0x65, 0xf6,
+	0x10, 0x3a, 0xe5, 0xa1, 0x8a, 0x25, 0x09, 0xb3,
+	0x04, 0x3e, 0x9b, 0xd4, 0x3d, 0x31, 0xcf, 0x5c,
+	0xcf, 0x61, 0xa6, 0xa4, 0x43, 0x35, 0xed, 0xfc,
+	0x89, 0x76, 0x38, 0x27, 0x94, 0x9d, 0x1d, 0xa4,
+	0xd7, 0x02, 0x45, 0x62, 0x28, 0x4f, 0x15, 0x2c,
+	0x8d, 0xb1, 0x01, 0xca, 0xe2, 0xd0, 0x26, 0xb1,
+	0x31, 0xcc, 0x56, 0x74, 0x02, 0x43, 0x71, 0x8b,
+	0xb9, 0xa9, 0xb3, 0x4e, 0x47, 0xd0, 0xf2, 0x1e,
+	0xd3, 0x38, 0x80, 0xfb, 0x87, 0x96, 0x27, 0x14,
+	0x47, 0x28, 0xdf, 0x29, 0xf9, 0x05, 0xdb, 0x2a,
+	0xd2, 0x31, 0x9f, 0xd4, 0x74, 0x10, 0x5f, 0x2e,
+	0xb9, 0x12, 0x7c, 0x00, 0xe3, 0x6e, 0x1f, 0xb6,
+	0xa6, 0x9f, 0xb1, 0x2d, 0x35, 0xd8, 0x42, 0x7c,
+	0x01, 0x21, 0xa6, 0xfa, 0x26, 0x81, 0x24, 0xf8,
+	0xb2, 0xc3, 0xcc, 0x26, 0xd3, 0x2c, 0x54, 0x8d,
+	0x3e, 0xd0, 0x8d, 0x21, 0x3f, 0xac, 0xd7, 0xe5,
+	0x4c, 0x88, 0x13, 0x81, 0x61, 0x55, 0xfe, 0x62,
+	0x76, 0xa4, 0x5c, 0x9c, 0x25, 0x80, 0x95, 0xd7,
+	0x44, 0x61, 0xfd, 0x17, 0x8d, 0x52, 0xa4, 0xcc,
+	0x22, 0x32, 0xed, 0x61, 0xde, 0xc5, 0x47, 0x2a,
+	0x4d, 0x5a, 0xac, 0xae, 0xaf, 0xaa, 0x10, 0x25,
+	0x4e, 0x6c, 0xc1, 0x73, 0xed, 0x56, 0x4a, 0x31,
+	0xb8, 0x47, 0x48, 0x45, 0x99, 0xed, 0x11, 0xbc,
+	0x1f, 0xff, 0x1d, 0xfd, 0xc4, 0x64, 0x28, 0x11,
+	0xbe, 0xd4, 0xc0, 0x6d, 0x7e, 0xd0, 0x92, 0xcc,
+	0x3d, 0x54, 0x3f, 0x2a, 0xaa, 0x89, 0x5b, 0x62,
+	0xd0, 0xa3, 0xa8, 0x6a, 0x90, 0xb9, 0x26, 0xaf,
+	0xb8, 0x43, 0xad, 0x7c, 0xa8, 0xd5, 0x8e, 0x66,
+	0xa9, 0x4e, 0xd4, 0x27, 0x1e, 0x66, 0xf3, 0x5b,
+	0xba, 0x32, 0x85, 0x65, 0xbb, 0xe0, 0xc7, 0x8b,
+	0x84, 0x6f, 0xf5, 0x14, 0x29, 0x1b, 0xc4, 0xe1,
+	0x5f, 0x71, 0x5e, 0x07, 0x46, 0xec, 0x6d, 0xef,
+	0x3a, 0x41, 0x16, 0x58, 0xa8, 0x09, 0xb4, 0x62,
+	0x3b, 0x39, 0xc7, 0xf6, 0x1a, 0x8f, 0x81, 0x9e,
+	0xfe, 0x77, 0xb2, 0x27, 0x92, 0x76, 0x09, 0xf1,
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+	0x82, 0xa3, 0x06, 0x25, 0xba, 0xaf, 0x67, 0x5b,
+	0x49, 0x5a, 0x41, 0x18, 0x06, 0xe2, 0x8d, 0x6c,
+	0xb2, 0xb0, 0x32, 0x9d, 0x55, 0xbb, 0x61, 0x70,
+	0x88, 0x6b, 0x83, 0xa1, 0x5b, 0xbd, 0xc1, 0xdd,
+	0x60, 0xc7, 0x02, 0x1b, 0x76, 0x69, 0x76, 0xc0,
+	0xc4, 0xb7, 0xd8, 0xca, 0x99, 0x65, 0x36, 0x4c,
+	0x15, 0x69, 0xe9, 0x6a, 0x24, 0x4a, 0xda, 0xac,
+	0xb5, 0x5e, 0x4d, 0x10, 0x1b, 0x0f, 0xed, 0x7b,
+	0xd6, 0xef, 0x96, 0x4d, 0x58, 0x0d, 0x0d, 0x1c,
+	0xc4, 0xe5, 0xe7, 0x5e, 0x4b, 0x1d, 0xaa, 0x60,
+	0x86, 0x93, 0xcb, 0xaa, 0xdd, 0xa5, 0x57, 0x92,
+	0x03, 0xa4, 0xa2, 0x1e, 0xb3, 0x8f, 0x9a, 0x8a,
+	0x7e, 0x30, 0xd7, 0xd6, 0x3d, 0xe4, 0xf3, 0x02,
+	0xc9, 0xda, 0x60, 0x14, 0xf7, 0x0a, 0x75, 0x7e,
+	0x9d, 0x40, 0x28, 0x7a, 0xe5, 0x7f, 0x0c, 0xe9,
+	0x24, 0xae, 0x07, 0xd7, 0x3d, 0xa1, 0x61, 0xbb,
+	0xd2, 0x38, 0x91, 0x0f, 0x1c, 0x84, 0x11, 0xe6,
+	0x5e, 0x71, 0xfa, 0x56, 0x7b, 0x6f, 0xd4, 0x18,
+	0xaf, 0xfc, 0x92, 0x95, 0x7c, 0x9e, 0x7e, 0xa0,
+	0x4c, 0x85, 0x77, 0x89, 0x27, 0xd9, 0x44, 0xf9,
+	0x11, 0xd6, 0x08, 0x2e, 0x5a, 0x1a, 0x14, 0xb9,
+	0x8b, 0x0e, 0x0f, 0x07, 0x7e, 0xe3, 0x1f, 0x2d,
+	0xdf, 0xb2, 0xc2, 0x5b, 0x50, 0x40, 0xfb, 0x9d,
+	0xc6, 0x73, 0x26, 0xed, 0x4c, 0x6b, 0xe6, 0x5d,
+	0x41, 0xee, 0x8b, 0x9b, 0x08, 0x9f, 0x54, 0x94,
+	0xae, 0x63, 0x9b, 0x2c, 0x46, 0xba, 0x59, 0x26,
+	0x6c, 0x1c, 0x81, 0xbd, 0x5c, 0x7d, 0x5a, 0x22,
+	0xf0, 0x80, 0x0f, 0x3c, 0xeb, 0xf5, 0x99, 0x2c,
+	0xe4, 0x25, 0xc8, 0xec, 0xc4, 0x1c, 0x80, 0x72,
+	0x80, 0x1b, 0x9e, 0xc6, 0xd6, 0xf8, 0xec, 0x42,
+	0x14, 0x6e, 0xff, 0x70, 0xeb, 0x59, 0x93, 0xdb,
+	0xda, 0xa2, 0x17, 0xc5, 0x98, 0xb0, 0xf2, 0x7c,
+	0xd5, 0xba, 0x68, 0x9a, 0xd6, 0xe9, 0x0c, 0x56,
+	0x04, 0xab, 0x1d, 0xda, 0xa3, 0x09, 0x1d, 0xb7,
+	0x77, 0x1c, 0x27, 0x62, 0x76, 0xba, 0x3d, 0x50,
+	0x5d, 0x54, 0x15, 0xf5, 0x05, 0x07, 0x71, 0xda,
+	0xc1, 0xd9, 0x74, 0x98, 0xc2, 0x81, 0xee, 0xc7,
+	0x2c, 0x0b, 0xa1, 0xcf, 0x15, 0xbe, 0x86, 0x8c,
+	0xdb, 0xad, 0xef, 0x51, 0x68, 0x2c, 0xa1, 0xc5,
+	0x81, 0xb6, 0xba, 0x86, 0xbe, 0x2b, 0x60, 0x7f,
+	0x04, 0xd5, 0x17, 0xc7, 0x56, 0x06, 0x8e, 0x82,
+	0x11, 0x2f, 0x51, 0x26, 0xee, 0xd7, 0xb3, 0xc9,
+	0x84, 0xa2, 0x1a, 0xec, 0xce, 0xbb, 0xb1, 0x4f,
+	0x71, 0x6b, 0xd5, 0x2f, 0x96, 0x36, 0xaf, 0x9b,
+	0x0b, 0xc6, 0x62, 0x61, 0xcc, 0xf0, 0xe3, 0xde,
+	0x1f, 0x34, 0x04, 0x0d, 0x0b, 0xb7, 0xd6, 0x8f,
+	0x59, 0xf0, 0x7c, 0x28, 0xab, 0x2d, 0x77, 0x1d,
+	0x99, 0x4d, 0x4c, 0x2f, 0x83, 0xfb, 0xca, 0x8e,
+	0xc2, 0x2c, 0xef, 0x8e, 0x1c, 0xd2, 0x6c, 0x3c,
+	0x06, 0x71, 0x49, 0x11, 0x28, 0x20, 0xa0, 0x82,
+	0x10, 0x1c, 0xaa, 0xbc, 0x4a, 0x21, 0xd9, 0xe3,
+	0x6e, 0x25, 0x12, 0xf1, 0x21, 0xdd, 0x7f, 0xe3,
+	0x09, 0x6e, 0x71, 0x26, 0x40, 0xde, 0x62, 0x46,
+	0x4f, 0xab, 0x57, 0x77, 0xcb, 0xf8, 0xf9, 0xdc,
+	0x14, 0xa3, 0x98, 0x5e, 0xc5, 0x71, 0x41, 0x33,
+	0x96, 0x54, 0x25, 0xb7, 0x31, 0xa4, 0x9a, 0x3a,
+	0x13, 0x0c, 0x60, 0x53, 0xea, 0xc2, 0x9a, 0x39,
+	0x6e, 0xf1, 0xb0, 0x39, 0xe9, 0xaa, 0x15, 0xfe,
+	0x4d, 0xad, 0x5c, 0x12, 0x1e, 0x9e, 0x46, 0xb5,
+	0xf2, 0x6b, 0x6c, 0x23, 0x0f, 0x07, 0x5d, 0x22,
+	0x13, 0xbe, 0x76, 0xfd, 0x80, 0x10, 0x36, 0xee,
+	0x01, 0xe6, 0x28, 0xeb, 0x90, 0x3d, 0xe9, 0xde,
+	0xeb, 0x45, 0xf0, 0x09, 0xe3, 0x36, 0xbe, 0xd5,
+	0xa1, 0x2b, 0xf8, 0xb1, 0x32, 0x56, 0xd3, 0x45,
+	0x14, 0x49, 0x42, 0x94, 0x59, 0x78, 0x83, 0x5b,
+	0x5e, 0xab, 0x46, 0xef, 0xe8, 0x2f, 0xcd, 0xd3,
+	0x74, 0xbd, 0xdd, 0x58, 0xf4, 0x9b, 0x2d, 0x95,
+	0xc6, 0x26, 0x46, 0xf8, 0x7c, 0x1a, 0x3d, 0x90,
+	0x63, 0x7f, 0x24, 0xbd, 0xf7, 0xa7, 0x18, 0x56,
+	0x52, 0x5e, 0x45, 0x3b, 0x8d, 0x12, 0x0e, 0x01,
+	0xcf, 0xeb, 0x59, 0xc3, 0x87, 0x87, 0x59, 0x4d,
+	0xad, 0x9f, 0x46, 0x29, 0xb9, 0x83, 0xb9, 0x1d,
+	0x03, 0xdd, 0xda, 0xfa, 0x85, 0xf2, 0x50, 0xd7,
+	0x50, 0x95, 0x12, 0xdd, 0xa7, 0x21, 0xde, 0x77,
+	0x0c, 0x38, 0x3a, 0x93, 0xbf, 0x93, 0xe1, 0x6c,
+	0x33, 0x27, 0x95, 0xec, 0xaa, 0x4e, 0x09, 0xad,
+	0x2b, 0xe3, 0xa8, 0xb0, 0xd5, 0xf8, 0x88, 0x25,
+	0x8e, 0x9a, 0x02, 0x35, 0xbb, 0xe1, 0xac, 0xc8,
+	0x19, 0xe7, 0x5b, 0xd8, 0x7a, 0x3c, 0x44, 0xad,
+	0x63, 0xd9, 0x9a, 0x0e, 0x27, 0xa3, 0xbb, 0x52,
+	0x87, 0x63, 0x03, 0x5c, 0x5c, 0x8b, 0x82, 0xea,
+	0x25, 0x84, 0x1f, 0xe1, 0x65, 0xcc, 0xa9, 0x7e,
+	0xb3, 0x04, 0x56, 0x2d, 0x41, 0x9a, 0xdb, 0xa4,
+	0x73, 0x75, 0xb2, 0x9a, 0x18, 0x6e, 0xed, 0x9f,
+	0xd1, 0xf0, 0xfc, 0x2d, 0x7b, 0x7e, 0x17, 0xa0,
+	0x02, 0x37, 0x81, 0x68, 0x03, 0x2a, 0xe6, 0xb6,
+	0x2f, 0x3d, 0xe3, 0x70, 0xd7, 0xbe, 0x14, 0x4b,
+	0x33, 0xc7, 0xe5, 0x4c, 0x35, 0xd2, 0xeb, 0x06,
+	0xc2, 0xe7, 0x34, 0x3d, 0x65, 0x4b, 0xde, 0x68,
+	0x82, 0x5f, 0xd0, 0x85, 0x8a, 0xb6, 0x3b, 0xb9,
+	0xf3, 0x1f, 0x29, 0xcb, 0xdd, 0x3d, 0x16, 0x11,
+	0x04, 0xfb, 0x5d, 0x39, 0xce, 0x48, 0x40, 0x90,
+	0x30, 0x74, 0xce, 0x95, 0xbf, 0xac, 0xfd, 0x42,
+	0x0b, 0xcd, 0xc7, 0x95, 0x84, 0x03, 0x4e, 0x77,
+	0x22, 0x77, 0x42, 0xff, 0xb5, 0x58, 0x10, 0xb9,
+	0x54, 0x6d, 0xf3, 0x22, 0xb6, 0x33, 0xb2, 0xe6,
+	0xa7, 0x80, 0x7b, 0x66, 0x2c, 0x79, 0xa8, 0x38,
+	0x46, 0x70, 0xcd, 0xca, 0x73, 0x1c, 0x42, 0x95,
+	0x93, 0x84, 0x94, 0x48, 0xdd, 0xa5, 0x02, 0x31,
+	0x12, 0xf5, 0x53, 0xc8, 0x28, 0x05, 0xae, 0xcf,
+	0x86, 0x2a, 0x35, 0xb2, 0xa3, 0xde, 0xea, 0xe9,
+	0x4e, 0xb8, 0xb4, 0xc1, 0xd4, 0xf6, 0x56, 0x67,
+	0x7a, 0xea, 0xb0, 0x57, 0x8f, 0xb2, 0x88, 0xa2,
+	0xa7, 0xdb, 0x6a, 0xcf, 0xe1, 0x19, 0x9e, 0x67,
+	0x43, 0xd3, 0x19, 0xe6, 0xb1, 0x04, 0xcf, 0xff,
+	0xbc, 0x83, 0xc0, 0x90, 0x79, 0x16, 0xf7, 0xf4,
+	0x01, 0xa7, 0x4b, 0x90, 0x59, 0xd4, 0x32, 0x00,
+	0xaf, 0x9d, 0xcf, 0x90, 0xb6, 0x6d, 0xf7, 0xf9,
+	0x41, 0x11, 0xdf, 0xf2, 0x15, 0xae, 0xf2, 0xd1,
+	0x32, 0xb2, 0x61, 0xab, 0xc9, 0x58, 0x9f, 0xca,
+	0x00, 0xeb, 0x5a, 0x59, 0xbf, 0x8d, 0x5a, 0x6e,
+	0x2a, 0x29, 0xff, 0xe0, 0x97, 0xf6, 0xd9, 0xd8,
+	0x07, 0xb8, 0xca, 0x1c, 0x66, 0xbc, 0xed, 0x98,
+	0x6f, 0x4e, 0x44, 0x38, 0xa7, 0xe3, 0x02, 0xa7,
+	0xce, 0x5c, 0x00, 0x8d, 0xe9, 0x5a, 0xfc, 0x13,
+	0x84, 0xfb, 0xf3, 0x1b, 0xf1, 0xcc, 0xf3, 0xf9,
+	0x84, 0xbd, 0x15, 0xeb, 0x7a, 0x03, 0x83, 0xe9,
+	0x51, 0xc7, 0x21, 0xf8, 0xab, 0x23, 0x9f, 0x79,
+	0x7f, 0xa0, 0x07, 0x69, 0xfa, 0x03, 0x7c, 0x7e,
+	0xfe, 0x70, 0x99, 0xef, 0x3c, 0x8c, 0xe8, 0xc1,
+	0x4a, 0xfe, 0xac, 0xc4, 0x01, 0x2f, 0xad, 0x52,
+	0xf7, 0xce, 0x4b, 0xa2, 0xf1, 0xea, 0x1b, 0x70,
+	0x8a, 0x22, 0xd9, 0x85, 0x25, 0x56, 0x03, 0x23,
+	0xc6, 0x9d, 0x13, 0x02, 0x29, 0xfb, 0xc3, 0x73,
+	0xf9, 0x6f, 0x37, 0xfa, 0x9f, 0xe4, 0x4d, 0x96,
+	0xb2, 0x98, 0x38, 0xa3, 0x82, 0x53, 0x14, 0x0d,
+	0x76, 0xed, 0x92, 0x9b, 0x43, 0x95, 0xbf, 0x09,
+	0x32, 0xd2, 0x0c, 0x5c, 0xcd, 0xcf, 0xcf, 0xc7,
+	0x3f, 0x07, 0xc1, 0xde, 0xeb, 0x0e, 0x74, 0x9e,
+	0xa6, 0xac, 0x41, 0x29, 0xff, 0x55, 0x36, 0x75,
+	0x43, 0xc8, 0x11, 0x86, 0x5d, 0xd0, 0x90, 0x90,
+	0xa2, 0x9c, 0xec, 0x6f, 0x6b, 0xbb, 0x36, 0xaa,
+	0xc2, 0xf8, 0x88, 0xae, 0x06, 0xfc, 0x4c, 0xad,
+	0xa8, 0x8d, 0xd6, 0xa8, 0xe3, 0x0c, 0x1d, 0x26,
+	0xd4, 0x2e, 0xac, 0x31, 0xfe, 0x3c, 0xc1, 0xa0,
+	0xd8, 0xad, 0x10, 0x44, 0x69, 0x46, 0xee, 0x2b,
+	0x3e, 0x77, 0xd9, 0x45, 0x73, 0x25, 0xf2, 0x1c,
+	0xb3, 0xc8, 0xc4, 0x96, 0xd4, 0xe1, 0xbc, 0xa8,
+	0x10, 0x68, 0xd9, 0x0e, 0xa5, 0x9b, 0xaf, 0x7d,
+	0x48, 0xbf, 0xc1, 0xb1, 0x05, 0xb0, 0xdd, 0x44,
+	0x27, 0xb6, 0x89, 0x9a, 0xdc, 0x7b, 0xb6, 0x8f,
+	0x43, 0x7a, 0x25, 0x17, 0x5c, 0xe1, 0xbf, 0x6c,
+	0x49, 0x98, 0x7a, 0xee, 0x33, 0x29, 0x6c, 0x7c,
+	0xe8, 0x2d, 0x2d, 0xee, 0xdd, 0x0a, 0x32, 0x04,
+	0xc1, 0xbb, 0x9f, 0x9d, 0x36, 0x55, 0x2c, 0x79,
+	0xd0, 0x51, 0x90, 0x2c, 0x32, 0x4f, 0x98, 0x7b,
+	0xe7, 0x12, 0x6a, 0x1b, 0x3c, 0xd6, 0x97, 0x24,
+	0x03, 0xc4, 0x12, 0xe1, 0xcf, 0x44, 0xe5, 0x90,
+	0xff, 0x84, 0x2d, 0x35, 0xda, 0x59, 0xae, 0xaa,
+	0xaa, 0x3e, 0xd6, 0xdc, 0x8d, 0x6e, 0x57, 0x75,
+	0x80, 0xc1, 0x90, 0xbc, 0x97, 0x27, 0xe1, 0x9b,
+	0xeb, 0xf3, 0x7c, 0xba, 0x38, 0x61, 0x4a, 0x37,
+	0xe6, 0x77, 0x6d, 0xc0, 0xd0, 0x1b, 0x6a, 0x7a,
+	0x5a, 0x40, 0x56, 0xe7, 0xae, 0xae, 0x5c, 0x2e,
+	0x6f, 0xec, 0xeb, 0x07, 0x13, 0xcc, 0xa2, 0xff,
+	0xbf, 0x1e, 0xb9, 0xf7, 0x7f, 0x04, 0x2f, 0x65,
+	0x7b, 0x9c, 0x25, 0x4c, 0xb7, 0x8f, 0xc6, 0x11,
+	0xcf, 0x1d, 0xf9, 0x7d, 0xcb, 0x55, 0xac, 0x3a,
+	0x42, 0x97, 0x41, 0x55, 0x63, 0xe3, 0x54, 0x22,
+	0x01, 0x0e, 0x1a, 0x81, 0x12, 0x49, 0xe6, 0x8d,
+	0xe5, 0x0c, 0xd9, 0x9c, 0x9b, 0xa0, 0xae, 0x6b,
+	0xbd, 0xa7, 0xe8, 0x88, 0xfc, 0x94, 0xc2, 0x3e,
+	0x2b, 0x04, 0x94, 0x8e, 0xe7, 0xe8, 0xb1, 0xe9,
+	0xf6, 0xcb, 0x6a, 0x08, 0x14, 0x50, 0x96, 0xf9,
+	0x5c, 0x6f, 0x95, 0xf8, 0x0f, 0x43, 0x63, 0xcc,
+	0xea, 0x4b, 0x54, 0xe7, 0xe0, 0x17, 0x25, 0x0b,
+	0x1b, 0xb9, 0x9a, 0x02, 0xa2, 0x4b, 0xeb, 0x98,
+	0x16, 0x55, 0xa1, 0x2a, 0xa6, 0x37, 0x23, 0x02,
+	0xa6, 0xb8, 0xfa, 0xb6, 0xfc, 0x5d, 0x82, 0xe6,
+	0xa9, 0xd7, 0xcd, 0x89, 0xee, 0xf3, 0x94, 0x09,
+	0xac, 0x2e, 0x0b, 0x4e, 0x79, 0xf7, 0xe7, 0x8f,
+	0x4c, 0x88, 0xb9, 0xf2, 0xbf, 0xdc, 0xf5, 0x65,
+	0x95, 0xef, 0x1b, 0x91, 0x4d, 0x9e, 0x77, 0xf6,
+	0x75, 0x45, 0x7f, 0x63, 0x38, 0x13, 0x6c, 0xe4,
+	0x42, 0x77, 0x33, 0xbb, 0x6e, 0x1a, 0x4b, 0xbb,
+	0xa2, 0x04, 0xad, 0x61, 0xe1, 0xa2, 0xc6, 0x76,
+	0x92, 0xe2, 0x07, 0xdf, 0x80, 0x7e, 0xd5, 0xf5,
+	0xc3, 0x54, 0x58, 0xfb, 0x67, 0xc4, 0xe0, 0xa9,
+	0x3b, 0x13, 0x65, 0xaa, 0x2d, 0xb0, 0x65, 0xcf,
+	0xb4, 0x12, 0x30, 0x95, 0xb5, 0xf6, 0x0b, 0x47,
+	0xd8, 0x12, 0x26, 0x58, 0x91, 0xfb, 0x4d, 0x54,
+	0x4f, 0xa5, 0x50, 0xb6, 0x69, 0x30, 0x60, 0xa5,
+	0x43, 0xc5, 0x4f, 0x70, 0x75, 0xb4, 0x3f, 0x29,
+	0xc6, 0x6f, 0xbf, 0x7b, 0x65, 0xca, 0xc2, 0x3e,
+	0xdd, 0xe8, 0x96, 0x6e, 0xe3, 0xe4, 0xc2, 0x32,
+	0x89, 0x12, 0xe9, 0xf3, 0x42, 0x49, 0x98, 0x85,
+	0x0e, 0xe7, 0xf5, 0x83, 0x9b, 0x34, 0xac, 0x61,
+	0xa3, 0x6b, 0xdd, 0x09, 0x36, 0x9f, 0x47, 0x13,
+	0x88, 0xdd, 0x81, 0x6b, 0xc1, 0x43, 0x9e, 0x4b,
+	0x56, 0x87, 0x3e, 0x98, 0xd0, 0xd6, 0x1e, 0xde,
+	0xbd, 0x13, 0x61, 0x58, 0x48, 0x0d, 0xb9, 0xeb,
+};
+
+static int __init crct10dif_test_init(void)
+{
+	int i;
+	int errors = 0;
+	int bytes = 0;
+	u64 nsec;
+	unsigned long flags;
+
+	static u16 crc;
+
+	for (i = 0; i < 100; i++) {
+		bytes += tests[i].length;
+		crc ^= crc_t10dif_generic(tests[i].crc, test_buf +
+		tests[i].start, tests[i].length);
+	}
+
+	local_irq_save(flags);
+
+	nsec = ktime_get_ns();
+
+	for (i = 0; i < 100; i++) {
+		if (tests[i].crct10dif != crc_t10dif_update(
+			tests[i].crc,
+			test_buf + tests[i].start,
+			tests[i].length))
+			errors++;
+	}
+
+	nsec = ktime_get_ns() - nsec;
+
+	local_irq_restore(flags);
+
+	if (errors)
+		pr_warn("crct10dif: %d self tests failed\n", errors);
+	else
+		pr_info("crct10dif: self tests passed, processed %d bytes in %lld nsec\n",
+		bytes, nsec);
+
+	return 0;
+}
+
+static void __exit crct10dif_test_exit(void)
+{
+	pr_info("CRC-T10DIF test module unloaded.\n");
+}
+
+module_init(crct10dif_test_init);
+module_exit(crct10dif_test_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("CRC-T10DIF Test Module");