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xfs_io: add crc32 self test

PATCH Superseded Darrick J. Wong 2 participants 4 messages Oct 30, 2018

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Darrick J. Wong

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PATCH 1/1 xfs_io: add crc32 self test

From: Darrick J. Wong <[email protected]>

Add a self test for crc32 into xfs_io so that xfstests can check the operation of the (potentially cross-compiled) package binaries by isolating the self test code to a header file that can be included by the build system self test and xfs_io.

Signed-off-by Darrick J. Wong <[email protected]>
---
 include/crc32selftest.h |  706 +++++++++++++++++++++++++++++++++++++++++++++++
 io/Makefile             |    8 -
 io/crc32selftest.c      |   51 +++
 io/init.c               |    1 
 io/io.h                 |    1 
 libfrog/crc32.c         |  669 ---------------------------------------------
 6 files changed, 764 insertions(+), 672 deletions(-)
 create mode 100644 include/crc32selftest.h
 create mode 100644 io/crc32selftest.c
include/crc32selftest.h new file +706 -0
new file mode 100644
index 00000000..75215c3f
@@ -0,0 +1,706 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Aug 8, 2011 Bob Pearson with help from Joakim Tjernlund and George Spelvin
+ * cleaned up code to current version of sparse and added the slicing-by-8
+ * algorithm to the closely similar existing slicing-by-4 algorithm.
+ * Oct 15, 2000 Matt Domsch <[email protected]>
+ * Nicer crc32 functions/docs submitted by [email protected].  Thanks!
+ * Code was from the public domain, copyright abandoned.  Code was
+ * subsequently included in the kernel, thus was re-licensed under the
+ * GNU GPL v2.
+ * Oct 12, 2000 Matt Domsch <[email protected]>
+ * Same crc32 function was used in 5 other places in the kernel.
+ * I made one version, and deleted the others.
+ * There are various incantations of crc32().  Some use a seed of 0 or ~0.
+ * Some xor at the end with ~0.  The generic crc32() function takes
+ * seed as an argument, and doesn't xor at the end.  Then individual
+ * users can do whatever they need.
+ *   drivers/net/smc9194.c uses seed ~0, doesn't xor with ~0.
+ *   fs/jffs2 uses seed 0, doesn't xor with ~0.
+ *   fs/partitions/efi.c uses seed ~0, xor's with ~0.
+ */
+
+/* see: Documentation/crc32.txt for a description of algorithms */
+
+/*
+ * lifted from the 3.8-rc2 kernel source for xfsprogs. Killed CONFIG_X86
+ * specific bits for just the generic algorithm. Also removed the big endian
+ * version of the algorithm as XFS only uses the little endian CRC version to
+ * match the hardware acceleration available on Intel CPUs.
+ */
+
+/* This is just the crc32 self test bits from crc32.c. */
+
+#ifndef _LIBFROG_CRC32SELFTEST_H_
+#define _LIBFROG_CRC32SELFTEST_H_
+
+/* 4096 random bytes */
+static uint8_t __attribute__((__aligned__(8))) test_buf[] =
+{
+	0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30,
+	0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4,
+	0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60,
+	0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c,
+	0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4,
+	0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a,
+	0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a,
+	0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4,
+	0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9,
+	0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4,
+	0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca,
+	0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61,
+	0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e,
+	0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 0x7a,
+	0x8d, 0x07, 0x63, 0xdb, 0x40, 0xe9, 0x0b, 0x6f,
+	0xad, 0x97, 0xf1, 0xed, 0xd0, 0x1e, 0x26, 0xfd,
+	0xbf, 0xb7, 0xc8, 0x04, 0x94, 0xf8, 0x8b, 0x8c,
+	0xf1, 0xab, 0x7a, 0xd4, 0xdd, 0xf3, 0xe8, 0x88,
+	0xc3, 0xed, 0x17, 0x8a, 0x9b, 0x40, 0x0d, 0x53,
+	0x62, 0x12, 0x03, 0x5f, 0x1b, 0x35, 0x32, 0x1f,
+	0xb4, 0x7b, 0x93, 0x78, 0x0d, 0xdb, 0xce, 0xa4,
+	0xc0, 0x47, 0xd5, 0xbf, 0x68, 0xe8, 0x5d, 0x74,
+	0x8f, 0x8e, 0x75, 0x1c, 0xb2, 0x4f, 0x9a, 0x60,
+	0xd1, 0xbe, 0x10, 0xf4, 0x5c, 0xa1, 0x53, 0x09,
+	0xa5, 0xe0, 0x09, 0x54, 0x85, 0x5c, 0xdc, 0x07,
+	0xe7, 0x21, 0x69, 0x7b, 0x8a, 0xfd, 0x90, 0xf1,
+	0x22, 0xd0, 0xb4, 0x36, 0x28, 0xe6, 0xb8, 0x0f,
+	0x39, 0xde, 0xc8, 0xf3, 0x86, 0x60, 0x34, 0xd2,
+	0x5e, 0xdf, 0xfd, 0xcf, 0x0f, 0xa9, 0x65, 0xf0,
+	0xd5, 0x4d, 0x96, 0x40, 0xe3, 0xdf, 0x3f, 0x95,
+	0x5a, 0x39, 0x19, 0x93, 0xf4, 0x75, 0xce, 0x22,
+	0x00, 0x1c, 0x93, 0xe2, 0x03, 0x66, 0xf4, 0x93,
+	0x73, 0x86, 0x81, 0x8e, 0x29, 0x44, 0x48, 0x86,
+	0x61, 0x7c, 0x48, 0xa3, 0x43, 0xd2, 0x9c, 0x8d,
+	0xd4, 0x95, 0xdd, 0xe1, 0x22, 0x89, 0x3a, 0x40,
+	0x4c, 0x1b, 0x8a, 0x04, 0xa8, 0x09, 0x69, 0x8b,
+	0xea, 0xc6, 0x55, 0x8e, 0x57, 0xe6, 0x64, 0x35,
+	0xf0, 0xc7, 0x16, 0x9f, 0x5d, 0x5e, 0x86, 0x40,
+	0x46, 0xbb, 0xe5, 0x45, 0x88, 0xfe, 0xc9, 0x63,
+	0x15, 0xfb, 0xf5, 0xbd, 0x71, 0x61, 0xeb, 0x7b,
+	0x78, 0x70, 0x07, 0x31, 0x03, 0x9f, 0xb2, 0xc8,
+	0xa7, 0xab, 0x47, 0xfd, 0xdf, 0xa0, 0x78, 0x72,
+	0xa4, 0x2a, 0xe4, 0xb6, 0xba, 0xc0, 0x1e, 0x86,
+	0x71, 0xe6, 0x3d, 0x18, 0x37, 0x70, 0xe6, 0xff,
+	0xe0, 0xbc, 0x0b, 0x22, 0xa0, 0x1f, 0xd3, 0xed,
+	0xa2, 0x55, 0x39, 0xab, 0xa8, 0x13, 0x73, 0x7c,
+	0x3f, 0xb2, 0xd6, 0x19, 0xac, 0xff, 0x99, 0xed,
+	0xe8, 0xe6, 0xa6, 0x22, 0xe3, 0x9c, 0xf1, 0x30,
+	0xdc, 0x01, 0x0a, 0x56, 0xfa, 0xe4, 0xc9, 0x99,
+	0xdd, 0xa8, 0xd8, 0xda, 0x35, 0x51, 0x73, 0xb4,
+	0x40, 0x86, 0x85, 0xdb, 0x5c, 0xd5, 0x85, 0x80,
+	0x14, 0x9c, 0xfd, 0x98, 0xa9, 0x82, 0xc5, 0x37,
+	0xff, 0x32, 0x5d, 0xd0, 0x0b, 0xfa, 0xdc, 0x04,
+	0x5e, 0x09, 0xd2, 0xca, 0x17, 0x4b, 0x1a, 0x8e,
+	0x15, 0xe1, 0xcc, 0x4e, 0x52, 0x88, 0x35, 0xbd,
+	0x48, 0xfe, 0x15, 0xa0, 0x91, 0xfd, 0x7e, 0x6c,
+	0x0e, 0x5d, 0x79, 0x1b, 0x81, 0x79, 0xd2, 0x09,
+	0x34, 0x70, 0x3d, 0x81, 0xec, 0xf6, 0x24, 0xbb,
+	0xfb, 0xf1, 0x7b, 0xdf, 0x54, 0xea, 0x80, 0x9b,
+	0xc7, 0x99, 0x9e, 0xbd, 0x16, 0x78, 0x12, 0x53,
+	0x5e, 0x01, 0xa7, 0x4e, 0xbd, 0x67, 0xe1, 0x9b,
+	0x4c, 0x0e, 0x61, 0x45, 0x97, 0xd2, 0xf0, 0x0f,
+	0xfe, 0x15, 0x08, 0xb7, 0x11, 0x4c, 0xe7, 0xff,
+	0x81, 0x53, 0xff, 0x91, 0x25, 0x38, 0x7e, 0x40,
+	0x94, 0xe5, 0xe0, 0xad, 0xe6, 0xd9, 0x79, 0xb6,
+	0x92, 0xc9, 0xfc, 0xde, 0xc3, 0x1a, 0x23, 0xbb,
+	0xdd, 0xc8, 0x51, 0x0c, 0x3a, 0x72, 0xfa, 0x73,
+	0x6f, 0xb7, 0xee, 0x61, 0x39, 0x03, 0x01, 0x3f,
+	0x7f, 0x94, 0x2e, 0x2e, 0xba, 0x3a, 0xbb, 0xb4,
+	0xfa, 0x6a, 0x17, 0xfe, 0xea, 0xef, 0x5e, 0x66,
+	0x97, 0x3f, 0x32, 0x3d, 0xd7, 0x3e, 0xb1, 0xf1,
+	0x6c, 0x14, 0x4c, 0xfd, 0x37, 0xd3, 0x38, 0x80,
+	0xfb, 0xde, 0xa6, 0x24, 0x1e, 0xc8, 0xca, 0x7f,
+	0x3a, 0x93, 0xd8, 0x8b, 0x18, 0x13, 0xb2, 0xe5,
+	0xe4, 0x93, 0x05, 0x53, 0x4f, 0x84, 0x66, 0xa7,
+	0x58, 0x5c, 0x7b, 0x86, 0x52, 0x6d, 0x0d, 0xce,
+	0xa4, 0x30, 0x7d, 0xb6, 0x18, 0x9f, 0xeb, 0xff,
+	0x22, 0xbb, 0x72, 0x29, 0xb9, 0x44, 0x0b, 0x48,
+	0x1e, 0x84, 0x71, 0x81, 0xe3, 0x6d, 0x73, 0x26,
+	0x92, 0xb4, 0x4d, 0x2a, 0x29, 0xb8, 0x1f, 0x72,
+	0xed, 0xd0, 0xe1, 0x64, 0x77, 0xea, 0x8e, 0x88,
+	0x0f, 0xef, 0x3f, 0xb1, 0x3b, 0xad, 0xf9, 0xc9,
+	0x8b, 0xd0, 0xac, 0xc6, 0xcc, 0xa9, 0x40, 0xcc,
+	0x76, 0xf6, 0x3b, 0x53, 0xb5, 0x88, 0xcb, 0xc8,
+	0x37, 0xf1, 0xa2, 0xba, 0x23, 0x15, 0x99, 0x09,
+	0xcc, 0xe7, 0x7a, 0x3b, 0x37, 0xf7, 0x58, 0xc8,
+	0x46, 0x8c, 0x2b, 0x2f, 0x4e, 0x0e, 0xa6, 0x5c,
+	0xea, 0x85, 0x55, 0xba, 0x02, 0x0e, 0x0e, 0x48,
+	0xbc, 0xe1, 0xb1, 0x01, 0x35, 0x79, 0x13, 0x3d,
+	0x1b, 0xc0, 0x53, 0x68, 0x11, 0xe7, 0x95, 0x0f,
+	0x9d, 0x3f, 0x4c, 0x47, 0x7b, 0x4d, 0x1c, 0xae,
+	0x50, 0x9b, 0xcb, 0xdd, 0x05, 0x8d, 0x9a, 0x97,
+	0xfd, 0x8c, 0xef, 0x0c, 0x1d, 0x67, 0x73, 0xa8,
+	0x28, 0x36, 0xd5, 0xb6, 0x92, 0x33, 0x40, 0x75,
+	0x0b, 0x51, 0xc3, 0x64, 0xba, 0x1d, 0xc2, 0xcc,
+	0xee, 0x7d, 0x54, 0x0f, 0x27, 0x69, 0xa7, 0x27,
+	0x63, 0x30, 0x29, 0xd9, 0xc8, 0x84, 0xd8, 0xdf,
+	0x9f, 0x68, 0x8d, 0x04, 0xca, 0xa6, 0xc5, 0xc7,
+	0x7a, 0x5c, 0xc8, 0xd1, 0xcb, 0x4a, 0xec, 0xd0,
+	0xd8, 0x20, 0x69, 0xc5, 0x17, 0xcd, 0x78, 0xc8,
+	0x75, 0x23, 0x30, 0x69, 0xc9, 0xd4, 0xea, 0x5c,
+	0x4f, 0x6b, 0x86, 0x3f, 0x8b, 0xfe, 0xee, 0x44,
+	0xc9, 0x7c, 0xb7, 0xdd, 0x3e, 0xe5, 0xec, 0x54,
+	0x03, 0x3e, 0xaa, 0x82, 0xc6, 0xdf, 0xb2, 0x38,
+	0x0e, 0x5d, 0xb3, 0x88, 0xd9, 0xd3, 0x69, 0x5f,
+	0x8f, 0x70, 0x8a, 0x7e, 0x11, 0xd9, 0x1e, 0x7b,
+	0x38, 0xf1, 0x42, 0x1a, 0xc0, 0x35, 0xf5, 0xc7,
+	0x36, 0x85, 0xf5, 0xf7, 0xb8, 0x7e, 0xc7, 0xef,
+	0x18, 0xf1, 0x63, 0xd6, 0x7a, 0xc6, 0xc9, 0x0e,
+	0x4d, 0x69, 0x4f, 0x84, 0xef, 0x26, 0x41, 0x0c,
+	0xec, 0xc7, 0xe0, 0x7e, 0x3c, 0x67, 0x01, 0x4c,
+	0x62, 0x1a, 0x20, 0x6f, 0xee, 0x47, 0x4d, 0xc0,
+	0x99, 0x13, 0x8d, 0x91, 0x4a, 0x26, 0xd4, 0x37,
+	0x28, 0x90, 0x58, 0x75, 0x66, 0x2b, 0x0a, 0xdf,
+	0xda, 0xee, 0x92, 0x25, 0x90, 0x62, 0x39, 0x9e,
+	0x44, 0x98, 0xad, 0xc1, 0x88, 0xed, 0xe4, 0xb4,
+	0xaf, 0xf5, 0x8c, 0x9b, 0x48, 0x4d, 0x56, 0x60,
+	0x97, 0x0f, 0x61, 0x59, 0x9e, 0xa6, 0x27, 0xfe,
+	0xc1, 0x91, 0x15, 0x38, 0xb8, 0x0f, 0xae, 0x61,
+	0x7d, 0x26, 0x13, 0x5a, 0x73, 0xff, 0x1c, 0xa3,
+	0x61, 0x04, 0x58, 0x48, 0x55, 0x44, 0x11, 0xfe,
+	0x15, 0xca, 0xc3, 0xbd, 0xca, 0xc5, 0xb4, 0x40,
+	0x5d, 0x1b, 0x7f, 0x39, 0xb5, 0x9c, 0x35, 0xec,
+	0x61, 0x15, 0x32, 0x32, 0xb8, 0x4e, 0x40, 0x9f,
+	0x17, 0x1f, 0x0a, 0x4d, 0xa9, 0x91, 0xef, 0xb7,
+	0xb0, 0xeb, 0xc2, 0x83, 0x9a, 0x6c, 0xd2, 0x79,
+	0x43, 0x78, 0x5e, 0x2f, 0xe5, 0xdd, 0x1a, 0x3c,
+	0x45, 0xab, 0x29, 0x40, 0x3a, 0x37, 0x5b, 0x6f,
+	0xd7, 0xfc, 0x48, 0x64, 0x3c, 0x49, 0xfb, 0x21,
+	0xbe, 0xc3, 0xff, 0x07, 0xfb, 0x17, 0xe9, 0xc9,
+	0x0c, 0x4c, 0x5c, 0x15, 0x9e, 0x8e, 0x22, 0x30,
+	0x0a, 0xde, 0x48, 0x7f, 0xdb, 0x0d, 0xd1, 0x2b,
+	0x87, 0x38, 0x9e, 0xcc, 0x5a, 0x01, 0x16, 0xee,
+	0x75, 0x49, 0x0d, 0x30, 0x01, 0x34, 0x6a, 0xb6,
+	0x9a, 0x5a, 0x2a, 0xec, 0xbb, 0x48, 0xac, 0xd3,
+	0x77, 0x83, 0xd8, 0x08, 0x86, 0x4f, 0x48, 0x09,
+	0x29, 0x41, 0x79, 0xa1, 0x03, 0x12, 0xc4, 0xcd,
+	0x90, 0x55, 0x47, 0x66, 0x74, 0x9a, 0xcc, 0x4f,
+	0x35, 0x8c, 0xd6, 0x98, 0xef, 0xeb, 0x45, 0xb9,
+	0x9a, 0x26, 0x2f, 0x39, 0xa5, 0x70, 0x6d, 0xfc,
+	0xb4, 0x51, 0xee, 0xf4, 0x9c, 0xe7, 0x38, 0x59,
+	0xad, 0xf4, 0xbc, 0x46, 0xff, 0x46, 0x8e, 0x60,
+	0x9c, 0xa3, 0x60, 0x1d, 0xf8, 0x26, 0x72, 0xf5,
+	0x72, 0x9d, 0x68, 0x80, 0x04, 0xf6, 0x0b, 0xa1,
+	0x0a, 0xd5, 0xa7, 0x82, 0x3a, 0x3e, 0x47, 0xa8,
+	0x5a, 0xde, 0x59, 0x4f, 0x7b, 0x07, 0xb3, 0xe9,
+	0x24, 0x19, 0x3d, 0x34, 0x05, 0xec, 0xf1, 0xab,
+	0x6e, 0x64, 0x8f, 0xd3, 0xe6, 0x41, 0x86, 0x80,
+	0x70, 0xe3, 0x8d, 0x60, 0x9c, 0x34, 0x25, 0x01,
+	0x07, 0x4d, 0x19, 0x41, 0x4e, 0x3d, 0x5c, 0x7e,
+	0xa8, 0xf5, 0xcc, 0xd5, 0x7b, 0xe2, 0x7d, 0x3d,
+	0x49, 0x86, 0x7d, 0x07, 0xb7, 0x10, 0xe3, 0x35,
+	0xb8, 0x84, 0x6d, 0x76, 0xab, 0x17, 0xc6, 0x38,
+	0xb4, 0xd3, 0x28, 0x57, 0xad, 0xd3, 0x88, 0x5a,
+	0xda, 0xea, 0xc8, 0x94, 0xcc, 0x37, 0x19, 0xac,
+	0x9c, 0x9f, 0x4b, 0x00, 0x15, 0xc0, 0xc8, 0xca,
+	0x1f, 0x15, 0xaa, 0xe0, 0xdb, 0xf9, 0x2f, 0x57,
+	0x1b, 0x24, 0xc7, 0x6f, 0x76, 0x29, 0xfb, 0xed,
+	0x25, 0x0d, 0xc0, 0xfe, 0xbd, 0x5a, 0xbf, 0x20,
+	0x08, 0x51, 0x05, 0xec, 0x71, 0xa3, 0xbf, 0xef,
+	0x5e, 0x99, 0x75, 0xdb, 0x3c, 0x5f, 0x9a, 0x8c,
+	0xbb, 0x19, 0x5c, 0x0e, 0x93, 0x19, 0xf8, 0x6a,
+	0xbc, 0xf2, 0x12, 0x54, 0x2f, 0xcb, 0x28, 0x64,
+	0x88, 0xb3, 0x92, 0x0d, 0x96, 0xd1, 0xa6, 0xe4,
+	0x1f, 0xf1, 0x4d, 0xa4, 0xab, 0x1c, 0xee, 0x54,
+	0xf2, 0xad, 0x29, 0x6d, 0x32, 0x37, 0xb2, 0x16,
+	0x77, 0x5c, 0xdc, 0x2e, 0x54, 0xec, 0x75, 0x26,
+	0xc6, 0x36, 0xd9, 0x17, 0x2c, 0xf1, 0x7a, 0xdc,
+	0x4b, 0xf1, 0xe2, 0xd9, 0x95, 0xba, 0xac, 0x87,
+	0xc1, 0xf3, 0x8e, 0x58, 0x08, 0xd8, 0x87, 0x60,
+	0xc9, 0xee, 0x6a, 0xde, 0xa4, 0xd2, 0xfc, 0x0d,
+	0xe5, 0x36, 0xc4, 0x5c, 0x52, 0xb3, 0x07, 0x54,
+	0x65, 0x24, 0xc1, 0xb1, 0xd1, 0xb1, 0x53, 0x13,
+	0x31, 0x79, 0x7f, 0x05, 0x76, 0xeb, 0x37, 0x59,
+	0x15, 0x2b, 0xd1, 0x3f, 0xac, 0x08, 0x97, 0xeb,
+	0x91, 0x98, 0xdf, 0x6c, 0x09, 0x0d, 0x04, 0x9f,
+	0xdc, 0x3b, 0x0e, 0x60, 0x68, 0x47, 0x23, 0x15,
+	0x16, 0xc6, 0x0b, 0x35, 0xf8, 0x77, 0xa2, 0x78,
+	0x50, 0xd4, 0x64, 0x22, 0x33, 0xff, 0xfb, 0x93,
+	0x71, 0x46, 0x50, 0x39, 0x1b, 0x9c, 0xea, 0x4e,
+	0x8d, 0x0c, 0x37, 0xe5, 0x5c, 0x51, 0x3a, 0x31,
+	0xb2, 0x85, 0x84, 0x3f, 0x41, 0xee, 0xa2, 0xc1,
+	0xc6, 0x13, 0x3b, 0x54, 0x28, 0xd2, 0x18, 0x37,
+	0xcc, 0x46, 0x9f, 0x6a, 0x91, 0x3d, 0x5a, 0x15,
+	0x3c, 0x89, 0xa3, 0x61, 0x06, 0x7d, 0x2e, 0x78,
+	0xbe, 0x7d, 0x40, 0xba, 0x2f, 0x95, 0xb1, 0x2f,
+	0x87, 0x3b, 0x8a, 0xbe, 0x6a, 0xf4, 0xc2, 0x31,
+	0x74, 0xee, 0x91, 0xe0, 0x23, 0xaa, 0x5d, 0x7f,
+	0xdd, 0xf0, 0x44, 0x8c, 0x0b, 0x59, 0x2b, 0xfc,
+	0x48, 0x3a, 0xdf, 0x07, 0x05, 0x38, 0x6c, 0xc9,
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+	0xdc, 0x94, 0x28, 0x67, 0x4e, 0xb7, 0x25, 0x48,
+	0x8a, 0xc2, 0xe0, 0x60, 0x96, 0xcc, 0x18, 0xf4,
+	0x84, 0xdd, 0xa7, 0x5e, 0x3e, 0x05, 0x0b, 0x26,
+	0x26, 0xb2, 0x5c, 0x1f, 0x57, 0x1a, 0x04, 0x7e,
+	0x6a, 0xe3, 0x2f, 0xb4, 0x35, 0xb6, 0x38, 0x40,
+	0x40, 0xcd, 0x6f, 0x87, 0x2e, 0xef, 0xa3, 0xd7,
+	0xa9, 0xc2, 0xe8, 0x0d, 0x27, 0xdf, 0x44, 0x62,
+	0x99, 0xa0, 0xfc, 0xcf, 0x81, 0x78, 0xcb, 0xfe,
+	0xe5, 0xa0, 0x03, 0x4e, 0x6c, 0xd7, 0xf4, 0xaf,
+	0x7a, 0xbb, 0x61, 0x82, 0xfe, 0x71, 0x89, 0xb2,
+	0x22, 0x7c, 0x8e, 0x83, 0x04, 0xce, 0xf6, 0x5d,
+	0x84, 0x8f, 0x95, 0x6a, 0x7f, 0xad, 0xfd, 0x32,
+	0x9c, 0x5e, 0xe4, 0x9c, 0x89, 0x60, 0x54, 0xaa,
+	0x96, 0x72, 0xd2, 0xd7, 0x36, 0x85, 0xa9, 0x45,
+	0xd2, 0x2a, 0xa1, 0x81, 0x49, 0x6f, 0x7e, 0x04,
+	0xfa, 0xe2, 0xfe, 0x90, 0x26, 0x77, 0x5a, 0x33,
+	0xb8, 0x04, 0x9a, 0x7a, 0xe6, 0x4c, 0x4f, 0xad,
+	0x72, 0x96, 0x08, 0x28, 0x58, 0x13, 0xf8, 0xc4,
+	0x1c, 0xf0, 0xc3, 0x45, 0x95, 0x49, 0x20, 0x8c,
+	0x9f, 0x39, 0x70, 0xe1, 0x77, 0xfe, 0xd5, 0x4b,
+	0xaf, 0x86, 0xda, 0xef, 0x22, 0x06, 0x83, 0x36,
+	0x29, 0x12, 0x11, 0x40, 0xbc, 0x3b, 0x86, 0xaa,
+	0xaa, 0x65, 0x60, 0xc3, 0x80, 0xca, 0xed, 0xa9,
+	0xf3, 0xb0, 0x79, 0x96, 0xa2, 0x55, 0x27, 0x28,
+	0x55, 0x73, 0x26, 0xa5, 0x50, 0xea, 0x92, 0x4b,
+	0x3c, 0x5c, 0x82, 0x33, 0xf0, 0x01, 0x3f, 0x03,
+	0xc1, 0x08, 0x05, 0xbf, 0x98, 0xf4, 0x9b, 0x6d,
+	0xa5, 0xa8, 0xb4, 0x82, 0x0c, 0x06, 0xfa, 0xff,
+	0x2d, 0x08, 0xf3, 0x05, 0x4f, 0x57, 0x2a, 0x39,
+	0xd4, 0x83, 0x0d, 0x75, 0x51, 0xd8, 0x5b, 0x1b,
+	0xd3, 0x51, 0x5a, 0x32, 0x2a, 0x9b, 0x32, 0xb2,
+	0xf2, 0xa4, 0x96, 0x12, 0xf2, 0xae, 0x40, 0x34,
+	0x67, 0xa8, 0xf5, 0x44, 0xd5, 0x35, 0x53, 0xfe,
+	0xa3, 0x60, 0x96, 0x63, 0x0f, 0x1f, 0x6e, 0xb0,
+	0x5a, 0x42, 0xa6, 0xfc, 0x51, 0x0b, 0x60, 0x27,
+	0xbc, 0x06, 0x71, 0xed, 0x65, 0x5b, 0x23, 0x86,
+	0x4a, 0x07, 0x3b, 0x22, 0x07, 0x46, 0xe6, 0x90,
+	0x3e, 0xf3, 0x25, 0x50, 0x1b, 0x4c, 0x7f, 0x03,
+	0x08, 0xa8, 0x36, 0x6b, 0x87, 0xe5, 0xe3, 0xdb,
+	0x9a, 0x38, 0x83, 0xff, 0x9f, 0x1a, 0x9f, 0x57,
+	0xa4, 0x2a, 0xf6, 0x37, 0xbc, 0x1a, 0xff, 0xc9,
+	0x1e, 0x35, 0x0c, 0xc3, 0x7c, 0xa3, 0xb2, 0xe5,
+	0xd2, 0xc6, 0xb4, 0x57, 0x47, 0xe4, 0x32, 0x16,
+	0x6d, 0xa9, 0xae, 0x64, 0xe6, 0x2d, 0x8d, 0xc5,
+	0x8d, 0x50, 0x8e, 0xe8, 0x1a, 0x22, 0x34, 0x2a,
+	0xd9, 0xeb, 0x51, 0x90, 0x4a, 0xb1, 0x41, 0x7d,
+	0x64, 0xf9, 0xb9, 0x0d, 0xf6, 0x23, 0x33, 0xb0,
+	0x33, 0xf4, 0xf7, 0x3f, 0x27, 0x84, 0xc6, 0x0f,
+	0x54, 0xa5, 0xc0, 0x2e, 0xec, 0x0b, 0x3a, 0x48,
+	0x6e, 0x80, 0x35, 0x81, 0x43, 0x9b, 0x90, 0xb1,
+	0xd0, 0x2b, 0xea, 0x21, 0xdc, 0xda, 0x5b, 0x09,
+	0xf4, 0xcc, 0x10, 0xb4, 0xc7, 0xfe, 0x79, 0x51,
+	0xc3, 0xc5, 0xac, 0x88, 0x74, 0x84, 0x0b, 0x4b,
+	0xca, 0x79, 0x16, 0x29, 0xfb, 0x69, 0x54, 0xdf,
+	0x41, 0x7e, 0xe9, 0xc7, 0x8e, 0xea, 0xa5, 0xfe,
+	0xfc, 0x76, 0x0e, 0x90, 0xc4, 0x92, 0x38, 0xad,
+	0x7b, 0x48, 0xe6, 0x6e, 0xf7, 0x21, 0xfd, 0x4e,
+	0x93, 0x0a, 0x7b, 0x41, 0x83, 0x68, 0xfb, 0x57,
+	0x51, 0x76, 0x34, 0xa9, 0x6c, 0x00, 0xaa, 0x4f,
+	0x66, 0x65, 0x98, 0x4a, 0x4f, 0xa3, 0xa0, 0xef,
+	0x69, 0x3f, 0xe3, 0x1c, 0x92, 0x8c, 0xfd, 0xd8,
+	0xe8, 0xde, 0x7c, 0x7f, 0x3e, 0x84, 0x8e, 0x69,
+	0x3c, 0xf1, 0xf2, 0x05, 0x46, 0xdc, 0x2f, 0x9d,
+	0x5e, 0x6e, 0x4c, 0xfb, 0xb5, 0x99, 0x2a, 0x59,
+	0x63, 0xc1, 0x34, 0xbc, 0x57, 0xc0, 0x0d, 0xb9,
+	0x61, 0x25, 0xf3, 0x33, 0x23, 0x51, 0xb6, 0x0d,
+	0x07, 0xa6, 0xab, 0x94, 0x4a, 0xb7, 0x2a, 0xea,
+	0xee, 0xac, 0xa3, 0xc3, 0x04, 0x8b, 0x0e, 0x56,
+	0xfe, 0x44, 0xa7, 0x39, 0xe2, 0xed, 0xed, 0xb4,
+	0x22, 0x2b, 0xac, 0x12, 0x32, 0x28, 0x91, 0xd8,
+	0xa5, 0xab, 0xff, 0x5f, 0xe0, 0x4b, 0xda, 0x78,
+	0x17, 0xda, 0xf1, 0x01, 0x5b, 0xcd, 0xe2, 0x5f,
+	0x50, 0x45, 0x73, 0x2b, 0xe4, 0x76, 0x77, 0xf4,
+	0x64, 0x1d, 0x43, 0xfb, 0x84, 0x7a, 0xea, 0x91,
+	0xae, 0xf9, 0x9e, 0xb7, 0xb4, 0xb0, 0x91, 0x5f,
+	0x16, 0x35, 0x9a, 0x11, 0xb8, 0xc7, 0xc1, 0x8c,
+	0xc6, 0x10, 0x8d, 0x2f, 0x63, 0x4a, 0xa7, 0x57,
+	0x3a, 0x51, 0xd6, 0x32, 0x2d, 0x64, 0x72, 0xd4,
+	0x66, 0xdc, 0x10, 0xa6, 0x67, 0xd6, 0x04, 0x23,
+	0x9d, 0x0a, 0x11, 0x77, 0xdd, 0x37, 0x94, 0x17,
+	0x3c, 0xbf, 0x8b, 0x65, 0xb0, 0x2e, 0x5e, 0x66,
+	0x47, 0x64, 0xac, 0xdd, 0xf0, 0x84, 0xfd, 0x39,
+	0xfa, 0x15, 0x5d, 0xef, 0xae, 0xca, 0xc1, 0x36,
+	0xa7, 0x5c, 0xbf, 0xc7, 0x08, 0xc2, 0x66, 0x00,
+	0x74, 0x74, 0x4e, 0x27, 0x3f, 0x55, 0x8a, 0xb7,
+	0x38, 0x66, 0x83, 0x6d, 0xcf, 0x99, 0x9e, 0x60,
+	0x8f, 0xdd, 0x2e, 0x62, 0x22, 0x0e, 0xef, 0x0c,
+	0x98, 0xa7, 0x85, 0x74, 0x3b, 0x9d, 0xec, 0x9e,
+	0xa9, 0x19, 0x72, 0xa5, 0x7f, 0x2c, 0x39, 0xb7,
+	0x7d, 0xb7, 0xf1, 0x12, 0x65, 0x27, 0x4b, 0x5a,
+	0xde, 0x17, 0xfe, 0xad, 0x44, 0xf3, 0x20, 0x4d,
+	0xfd, 0xe4, 0x1f, 0xb5, 0x81, 0xb0, 0x36, 0x37,
+	0x08, 0x6f, 0xc3, 0x0c, 0xe9, 0x85, 0x98, 0x82,
+	0xa9, 0x62, 0x0c, 0xc4, 0x97, 0xc0, 0x50, 0xc8,
+	0xa7, 0x3c, 0x50, 0x9f, 0x43, 0xb9, 0xcd, 0x5e,
+	0x4d, 0xfa, 0x1c, 0x4b, 0x0b, 0xa9, 0x98, 0x85,
+	0x38, 0x92, 0xac, 0x8d, 0xe4, 0xad, 0x9b, 0x98,
+	0xab, 0xd9, 0x38, 0xac, 0x62, 0x52, 0xa3, 0x22,
+	0x63, 0x0f, 0xbf, 0x95, 0x48, 0xdf, 0x69, 0xe7,
+	0x8b, 0x33, 0xd5, 0xb2, 0xbd, 0x05, 0x49, 0x49,
+	0x9d, 0x57, 0x73, 0x19, 0x33, 0xae, 0xfa, 0x33,
+	0xf1, 0x19, 0xa8, 0x80, 0xce, 0x04, 0x9f, 0xbc,
+	0x1d, 0x65, 0x82, 0x1b, 0xe5, 0x3a, 0x51, 0xc8,
+	0x1c, 0x21, 0xe3, 0x5d, 0xf3, 0x7d, 0x9b, 0x2f,
+	0x2c, 0x1d, 0x4a, 0x7f, 0x9b, 0x68, 0x35, 0xa3,
+	0xb2, 0x50, 0xf7, 0x62, 0x79, 0xcd, 0xf4, 0x98,
+	0x4f, 0xe5, 0x63, 0x7c, 0x3e, 0x45, 0x31, 0x8c,
+	0x16, 0xa0, 0x12, 0xc8, 0x58, 0xce, 0x39, 0xa6,
+	0xbc, 0x54, 0xdb, 0xc5, 0xe0, 0xd5, 0xba, 0xbc,
+	0xb9, 0x04, 0xf4, 0x8d, 0xe8, 0x2f, 0x15, 0x9d,
+};
+
+/* 100 test cases */
+static struct crc_test {
+	uint32_t crc;	/* random starting crc */
+	uint32_t start;	/* random 6 bit offset in buf */
+	uint32_t length;	/* random 11 bit length of test */
+	uint32_t crc32c_le;	/* expected crc32c_le result */
+} test[] =
+{
+	{0x674bf11d, 0x00000038, 0x00000542, 0xf6e93d6c},
+	{0x35c672c6, 0x0000003a, 0x000001aa, 0x0fe92aca},
+	{0x496da28e, 0x00000039, 0x000005af, 0x52e1ebb8},
+	{0x09a9b90e, 0x00000027, 0x000001f8, 0x0798af9a},
+	{0xdc97e5a9, 0x00000025, 0x000003b6, 0x18eb3152},
+	{0x47c58900, 0x0000000a, 0x000000b9, 0xd00d08c7},
+	{0x292561e8, 0x0000000c, 0x00000403, 0x8ba966bc},
+	{0x415037f6, 0x00000003, 0x00000676, 0x11d694a2},
+	{0x3466e707, 0x00000026, 0x00000042, 0x6ab3208d},
+	{0xafd1281b, 0x00000023, 0x000002ee, 0xba4603c5},
+	{0xd3857b18, 0x00000028, 0x000004a2, 0xe6071c6f},
+	{0x1d825a8f, 0x0000002b, 0x0000050b, 0x179ec30a},
+	{0x5033e3bc, 0x0000000b, 0x00000078, 0x0903beb8},
+	{0x94f1fb5e, 0x0000000f, 0x000003a2, 0x6a7cb4fa},
+	{0xc9a0fe14, 0x00000009, 0x00000473, 0xdb535801},
+	{0x88a034b1, 0x0000001c, 0x000005ad, 0x92bed597},
+	{0xf0f72239, 0x00000020, 0x0000026d, 0x192a3f1b},
+	{0xcc20a5e3, 0x0000003b, 0x0000067a, 0xccbaec1a},
+	{0xce589c95, 0x0000002b, 0x00000641, 0x7eabae4d},
+	{0x78edc885, 0x00000035, 0x000005be, 0x28c72982},
+	{0x9d40a377, 0x0000003b, 0x00000038, 0xc3cd4d18},
+	{0x703d0e01, 0x0000003c, 0x000006f1, 0xbca8f0e7},
+	{0x776bf505, 0x0000000f, 0x000005b2, 0x713f60b3},
+	{0x4a3e7854, 0x00000027, 0x000004b8, 0xebd08fd5},
+	{0x209172dd, 0x0000003b, 0x00000356, 0x64406c59},
+	{0x3ba4cc5b, 0x0000002f, 0x00000203, 0x7421890e},
+	{0xfc62f297, 0x00000000, 0x00000079, 0xe9347603},
+	{0x64280b8b, 0x00000016, 0x000007ab, 0x1bef9060},
+	{0x97dd724b, 0x00000033, 0x000007ad, 0x34720072},
+	{0x61394b52, 0x00000035, 0x00000571, 0x48310f59},
+	{0x29b4faff, 0x00000024, 0x0000006e, 0x783a4213},
+	{0x29bfb1dc, 0x0000000b, 0x00000244, 0x9e8efd41},
+	{0x86ae934b, 0x00000035, 0x00000104, 0xfc3d34a5},
+	{0xc4c1024e, 0x0000002e, 0x000006b1, 0x17a52ae2},
+	{0x3287a80a, 0x00000026, 0x00000496, 0x886d935a},
+	{0xa4db423e, 0x00000023, 0x0000045d, 0xeaaeaeb2},
+	{0x7a1078df, 0x00000015, 0x0000014a, 0x8e900a4b},
+	{0x6048bd5b, 0x00000006, 0x0000006a, 0xd74662b1},
+	{0xd8f9ea20, 0x0000003d, 0x00000277, 0xd26752ba},
+	{0xea5ec3b4, 0x0000002a, 0x000004fe, 0x8b1fcd62},
+	{0x2dfb005d, 0x00000016, 0x00000345, 0xf54342fe},
+	{0x5a214ade, 0x00000020, 0x000005b6, 0x5b95b988},
+	{0xf0ab9cca, 0x00000032, 0x00000515, 0x2e1176be},
+	{0x91b444f9, 0x0000002e, 0x000007f8, 0x66120546},
+	{0x1b5d2ddb, 0x0000002e, 0x0000012c, 0xf256a5cc},
+	{0xd824d1bb, 0x0000003a, 0x000007b5, 0x4af1dd69},
+	{0x0470180c, 0x00000034, 0x000001f0, 0x56f0a04a},
+	{0xffaa3a3f, 0x00000036, 0x00000299, 0x74f6b6b2},
+	{0x6406cfeb, 0x00000023, 0x00000600, 0x085951fd},
+	{0xb24aaa38, 0x0000003e, 0x000004a1, 0xc65387eb},
+	{0x58b2ab7c, 0x00000039, 0x000002b4, 0x1ca9257b},
+	{0x3db85970, 0x00000006, 0x000002b6, 0xfd196d76},
+	{0x857830c5, 0x00000003, 0x00000590, 0x5ef88339},
+	{0xe1fcd978, 0x0000003e, 0x000007d8, 0x2c3714d9},
+	{0xb982a768, 0x00000016, 0x000006e0, 0x58576548},
+	{0x1d581ce8, 0x0000001e, 0x0000058b, 0xfd7c57de},
+	{0x2456719b, 0x00000025, 0x00000503, 0xd5fedd59},
+	{0xfae6d8f2, 0x00000000, 0x0000055d, 0x1cc3b17b},
+	{0xcba828e3, 0x00000039, 0x000002ce, 0x270eed73},
+	{0x13d25952, 0x0000000a, 0x0000072d, 0x91ecbb11},
+	{0x0342be3f, 0x00000015, 0x00000599, 0x05ed8d0c},
+	{0xeaa344e0, 0x00000014, 0x000004d8, 0x0b09ad5b},
+	{0xbbb52021, 0x0000003b, 0x00000272, 0xf8d511fb},
+	{0xb66384dc, 0x0000001d, 0x000007fc, 0x5ad832cc},
+	{0x616c01b6, 0x00000022, 0x000002c8, 0x1214d196},
+	{0xce2bdaad, 0x00000016, 0x0000062a, 0x5747218a},
+	{0x00fe84d7, 0x00000005, 0x00000205, 0xde8f14de},
+	{0xbebdcb4c, 0x00000006, 0x0000055d, 0x3563b7b9},
+	{0xd8b1a02a, 0x00000010, 0x00000387, 0x071475d0},
+	{0x3b96cad2, 0x00000036, 0x00000347, 0x54c79d60},
+	{0xc94c1ed7, 0x00000005, 0x0000038b, 0x4c53eee6},
+	{0x1aad454e, 0x00000025, 0x000002b2, 0x10137a3c},
+	{0xa4fec9a6, 0x00000000, 0x000006d6, 0xaa9d6c73},
+	{0x1bbe71e2, 0x0000001f, 0x000002fd, 0xb63d23e7},
+	{0x4201c7e4, 0x00000002, 0x000002b7, 0x7f53e9cf},
+	{0x23fddc96, 0x00000003, 0x00000627, 0x13c1cd83},
+	{0xd82ba25c, 0x00000016, 0x0000063e, 0x49ff5867},
+	{0x786f2032, 0x0000002d, 0x0000060f, 0x8467f211},
+	{0xfebe4e1f, 0x0000002a, 0x000004f2, 0x3f9683b2},
+	{0x1a6e0a39, 0x00000008, 0x00000672, 0x76a3f874},
+	{0x56000ab8, 0x0000000e, 0x000000e5, 0x863b702f},
+	{0x4717fe0c, 0x00000000, 0x000006ec, 0xdc6c58ff},
+	{0xd5d5d68e, 0x0000003c, 0x000003a3, 0x0622cc95},
+	{0xc25dd6c6, 0x00000024, 0x000006c0, 0xe85605cd},
+	{0xe9b11300, 0x00000023, 0x00000683, 0x31da5f06},
+	{0x95cd285e, 0x00000001, 0x00000047, 0xa1f2e784},
+	{0xd9245a25, 0x0000001e, 0x000003a6, 0xb07cc616},
+	{0x103279db, 0x00000006, 0x0000039b, 0xbf943b6c},
+	{0x1cba3172, 0x00000027, 0x000001c8, 0x2c01af1c},
+	{0x8f613739, 0x0000000c, 0x000001df, 0x0fe5f56d},
+	{0x1c6aa90d, 0x0000001b, 0x0000053c, 0xf8943b2d},
+	{0xaabe5b93, 0x0000003d, 0x00000715, 0xe4d89272},
+	{0xf15dd038, 0x00000006, 0x000006db, 0x7c2f6bbb},
+	{0x584dd49c, 0x00000020, 0x000007bc, 0xabbf388b},
+	{0x5d8c9506, 0x00000020, 0x00000470, 0x1dca1f4e},
+	{0xb80d17b0, 0x00000032, 0x00000346, 0x5c170e23},
+	{0xdaf0592e, 0x00000023, 0x000007b0, 0xc0e9d672},
+	{0x4793cc85, 0x0000000d, 0x00000706, 0xc18bdc86},
+	{0x82ebf64e, 0x00000009, 0x000007c3, 0xa874fcdd},
+	{0xb18a0319, 0x00000026, 0x000007db, 0x9dc0bb48},
+};
+
+static int
+crc32c_test(void)
+{
+	int i;
+	int errors = 0;
+	int bytes = 0;
+	struct timeval start, stop;
+	uint64_t usec;
+
+	/* keep static to prevent cache warming code from
+	 * getting eliminated by the compiler */
+	static uint32_t crc;
+
+	/* pre-warm the cache */
+	for (i = 0; i < 100; i++) {
+		bytes += 2*test[i].length;
+
+		crc ^= crc32c_le(test[i].crc, test_buf +
+		    test[i].start, test[i].length);
+	}
+
+	gettimeofday(&start, NULL);
+	for (i = 0; i < 100; i++) {
+		if (test[i].crc32c_le != crc32c_le(test[i].crc, test_buf +
+		    test[i].start, test[i].length))
+			errors++;
+	}
+	gettimeofday(&stop, NULL);
+
+	usec = stop.tv_usec - start.tv_usec +
+		1000000 * (stop.tv_sec - start.tv_sec);
+
+	if (errors)
+		printf("crc32c: %d self tests failed\n", errors);
+	else {
+		printf("crc32c: tests passed, %d bytes in %" PRIu64 " usec\n",
+			bytes, usec);
+	}
+
+	return errors;
+}
+
+#endif /* _LIBFROG_CRC32SELFTEST_H_ */
io/Makefile +4 -4
index 6270fc16..fb253313 100644
@@ -9,10 +9,10 @@ LTCOMMAND = xfs_io
 LSRCFILES = xfs_bmap.sh xfs_freeze.sh xfs_mkfile.sh
 HFILES = init.h io.h
 CFILES = init.c \
-	attr.c bmap.c cowextsize.c encrypt.c file.c freeze.c fsync.c \
-	getrusage.c imap.c inject.c label.c link.c mmap.c open.c parent.c \
-	pread.c prealloc.c pwrite.c reflink.c resblks.c scrub.c seek.c \
-	shutdown.c stat.c swapext.c sync.c truncate.c utimes.c
+	attr.c bmap.c crc32selftest.c cowextsize.c encrypt.c file.c freeze.c \
+	fsync.c getrusage.c imap.c inject.c label.c link.c mmap.c open.c \
+	parent.c pread.c prealloc.c pwrite.c reflink.c resblks.c scrub.c \
+	seek.c shutdown.c stat.c swapext.c sync.c truncate.c utimes.c
 
 LLDLIBS = $(LIBXCMD) $(LIBHANDLE) $(LIBFROG) $(LIBPTHREAD)
 LTDEPENDENCIES = $(LIBXCMD) $(LIBHANDLE) $(LIBFROG)
io/crc32selftest.c new file +51 -0

51 lines not on this page · raw message

io/init.c +1 -0
index b5eade39..53b754e4 100644
@@ -85,6 +85,7 @@ init_commands(void)
 	sync_range_init();
 	truncate_init();
 	utimes_init();
+	crc32selftest_init();
 }
 
 /*
io/io.h +1 -0
index 9278ad00..847b4759 100644
@@ -182,3 +182,4 @@ extern void		log_writes_init(void);
 
 extern void		scrub_init(void);
 extern void		repair_init(void);
+extern void		crc32selftest_init(void);
libfrog/crc32.c +1 -668

675 lines not on this page · raw message

#1 lore raw
Quoted 7 lines · Darrick J. Wong

From: Darrick J. Wong <[email protected]>

Add a self test for crc32 into xfs_io so that xfstests can check the operation of the (potentially cross-compiled) package binaries by isolating the self test code to a header file that can be included by the build system self test and xfs_io.

Quoted 8 lines
Signed-off-by Darrick J. Wong <[email protected]>
---
 include/crc32selftest.h |  706 +++++++++++++++++++++++++++++++++++++++++++++++
 io/Makefile             |    8 -
 io/crc32selftest.c      |   51 +++
 io/init.c               |    1 
 io/io.h                 |    1 
 libfrog/crc32.c         |  669 ---------------------------------------------

needs a manpage change as well I think.

Quoted 4 lines
 6 files changed, 764 insertions(+), 672 deletions(-)
 create mode 100644 include/crc32selftest.h
 create mode 100644 io/crc32selftest.c

...

Quoted 25 lines
io/crc32selftest.c new file +19 -0
new file mode 100644
index 00000000..c0b4b2f4
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 Oracle, Inc.
+ * All Rights Reserved.
+ */
+
+#include "platform_defs.h"
+#include "command.h"
+#include "init.h"
+#include "io.h"
+#include "crc32c.h"
+#include "crc32selftest.h"
+
+static int
+crc32selftest_f(
+	int		argc,
+	char		**argv)
+{
+	int		c;

io/crc32selftest.c line 29

Quoted 10 lines
io/crc32selftest.c new file +10 -0
+	int		errors;
+
+	while ((c = getopt(argc, argv, "")) != EOF) {
+		switch (c) {
+		default:
+			fprintf(stderr,
+_("Bad option for crc32selftest command.\n"));
+			return 0;
+		}
+	}

I think we can drop the getopt bits altogether because:

io/crc32selftest.c line 39

Quoted 9 lines
io/crc32selftest.c new file +9 -0
+	errors = crc32c_test();
+	return errors == 0 ? 0 : 1;
+}
+
+static const cmdinfo_t	crc32selftest_cmd = {
+	.name		= "crc32selftest",
+	.cfunc		= crc32selftest_f,
+	.argmin		= 0,
+	.argmax		= 0,

This command structure doesn't even let us get there:

# io/xfs_io -c "crc32selftest foo"
bad argument count 1 to crc32selftest, expected 0 arguments
# io/xfs_io -c "crc32selftest -f"
bad argument count 1 to crc32selftest, expected 0 arguments

and other "argmax" functions (freeze, thaw, close, munmap...) don't bother with getopt at all.

io/crc32selftest.c line 41

Quoted 2 lines
io/crc32selftest.c new file +2 -0
+	.canpush	= 0,
+	.args		= "",

drop this I think, otherwise we get a weird space in usage:

crc32selftest -- crc32c self test

vs

crc32selftest -- crc32c self test

because

        if (ct->args)
                printf("%s ", ct->args);
        printf("-- %s\n", ct->oneline);

io/crc32selftest.c line 51

Quoted 11 lines
io/crc32selftest.c new file +10 -0
+	.flags		= CMD_FLAG_ONESHOT | CMD_FLAG_FOREIGN_OK |
+			  CMD_NOFILE_OK | CMD_NOMAP_OK,
+	.oneline	= N_("crc32c self test"),
 
+};
+
+void
+crc32selftest_init(void)
+{
+	add_command(&crc32selftest_cmd);
+}

ok is it better to call this crc32c selftest or crc32 selftest? Seems a little inconsistent in the naming.

Quoted 21 lines
io/init.c +1 -0
index b5eade39..53b754e4 100644
@@ -85,6 +85,7 @@ init_commands(void)
 	sync_range_init();
 	truncate_init();
 	utimes_init();
+	crc32selftest_init();
 }
 
 /*
io/io.h +1 -0
index 9278ad00..847b4759 100644
@@ -182,3 +182,4 @@ extern void		log_writes_init(void);
 
 extern void		scrub_init(void);
 extern void		repair_init(void);
+extern void		crc32selftest_init(void);
author
#2 lore raw
Quoted 17 lines · Eric Sandeen
Quoted 7 lines · Darrick J. Wong

From: Darrick J. Wong <[email protected]>

Add a self test for crc32 into xfs_io so that xfstests can check the operation of the (potentially cross-compiled) package binaries by isolating the self test code to a header file that can be included by the build system self test and xfs_io.

Quoted 8 lines
Signed-off-by Darrick J. Wong <[email protected]>
---
 include/crc32selftest.h |  706 +++++++++++++++++++++++++++++++++++++++++++++++
 io/Makefile             |    8 -
 io/crc32selftest.c      |   51 +++
 io/init.c               |    1 
 io/io.h                 |    1 
 libfrog/crc32.c         |  669 ---------------------------------------------
Quoted 1 line

needs a manpage change as well I think.

Dangit, I forgot to port that over when I moved the command.

Quoted 57 lines
Quoted 4 lines
 6 files changed, 764 insertions(+), 672 deletions(-)
 create mode 100644 include/crc32selftest.h
 create mode 100644 io/crc32selftest.c

...

Quoted 25 lines
io/crc32selftest.c new file +19 -0
new file mode 100644
index 00000000..c0b4b2f4
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 Oracle, Inc.
+ * All Rights Reserved.
+ */
+
+#include "platform_defs.h"
+#include "command.h"
+#include "init.h"
+#include "io.h"
+#include "crc32c.h"
+#include "crc32selftest.h"
+
+static int
+crc32selftest_f(
+	int		argc,
+	char		**argv)
+{
+	int		c;

io/crc32selftest.c line 29

Quoted 10 lines
io/crc32selftest.c new file +10 -0
+	int		errors;
+
+	while ((c = getopt(argc, argv, "")) != EOF) {
+		switch (c) {
+		default:
+			fprintf(stderr,
+_("Bad option for crc32selftest command.\n"));
+			return 0;
+		}
+	}

I think we can drop the getopt bits altogether because:

io/crc32selftest.c line 39

Quoted 9 lines
io/crc32selftest.c new file +9 -0
+	errors = crc32c_test();
+	return errors == 0 ? 0 : 1;
+}
+
+static const cmdinfo_t	crc32selftest_cmd = {
+	.name		= "crc32selftest",
+	.cfunc		= crc32selftest_f,
+	.argmin		= 0,
+	.argmax		= 0,

This command structure doesn't even let us get there:

Quoted 7 lines
# io/xfs_io -c "crc32selftest foo"
bad argument count 1 to crc32selftest, expected 0 arguments
# io/xfs_io -c "crc32selftest -f"
bad argument count 1 to crc32selftest, expected 0 arguments

and other "argmax" functions (freeze, thaw, close, munmap...) don't bother with getopt at all.

ok.

Quoted 9 lines

io/crc32selftest.c line 41

Quoted 2 lines
io/crc32selftest.c new file +2 -0
+	.canpush	= 0,
+	.args		= "",

drop this I think, otherwise we get a weird space in usage:

crc32selftest -- crc32c self test

vs

Quoted 8 lines

crc32selftest -- crc32c self test

because

        if (ct->args)
                printf("%s ", ct->args);
        printf("-- %s\n", ct->oneline);

Aha, that's why it does that...

Quoted 4 lines
Quoted 3 lines
io/crc32selftest.c new file +3 -0
+	.flags		= CMD_FLAG_ONESHOT | CMD_FLAG_FOREIGN_OK |
+			  CMD_NOFILE_OK | CMD_NOMAP_OK,
+	.oneline	= N_("crc32c self test"),
Quoted 9 lines

io/crc32selftest.c line 51

Quoted 7 lines
io/crc32selftest.c new file +7 -0
+};
+
+void
+crc32selftest_init(void)
+{
+	add_command(&crc32selftest_cmd);
+}

ok is it better to call this crc32c selftest or crc32 selftest? Seems a little inconsistent in the naming.

crc32cselftest it is then.

--D

Quoted 23 lines
Quoted 21 lines
io/init.c +1 -0
index b5eade39..53b754e4 100644
@@ -85,6 +85,7 @@ init_commands(void)
 	sync_range_init();
 	truncate_init();
 	utimes_init();
+	crc32selftest_init();
 }
 
 /*
io/io.h +1 -0
index 9278ad00..847b4759 100644
@@ -182,3 +182,4 @@ extern void		log_writes_init(void);
 
 extern void		scrub_init(void);
 extern void		repair_init(void);
+extern void		crc32selftest_init(void);
author
#3 lore raw

PATCH v2 1/1 xfs_io: add crc32 self test

In reply to Darrick J. Wong

From: Darrick J. Wong <[email protected]>

Add a self test for crc32c into xfs_io so that xfstests can check the operation of the (potentially cross-compiled) package binaries by isolating the self test code to a header file that can be included by the build system self test and xfs_io.

Signed-off-by Darrick J. Wong <[email protected]>

---
v2: crc32selftest -> crc32cselftest, other command form changes

---
 include/crc32cselftest.h |  706 ++++++++++++++++++++++++++++++++++++++++++++++
 io/Makefile              |    8 -
 io/crc32cselftest.c      |   37 ++
 io/init.c                |    1 
 io/io.h                  |    1 
 libfrog/crc32.c          |  669 --------------------------------------------
 man/man8/xfs_io.8        |    4 
 7 files changed, 754 insertions(+), 672 deletions(-)
 create mode 100644 include/crc32cselftest.h
 create mode 100644 io/crc32cselftest.c
include/crc32cselftest.h new file +706 -0
new file mode 100644
index 00000000..11da676b
@@ -0,0 +1,706 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Aug 8, 2011 Bob Pearson with help from Joakim Tjernlund and George Spelvin
+ * cleaned up code to current version of sparse and added the slicing-by-8
+ * algorithm to the closely similar existing slicing-by-4 algorithm.
+ * Oct 15, 2000 Matt Domsch <[email protected]>
+ * Nicer crc32 functions/docs submitted by [email protected].  Thanks!
+ * Code was from the public domain, copyright abandoned.  Code was
+ * subsequently included in the kernel, thus was re-licensed under the
+ * GNU GPL v2.
+ * Oct 12, 2000 Matt Domsch <[email protected]>
+ * Same crc32 function was used in 5 other places in the kernel.
+ * I made one version, and deleted the others.
+ * There are various incantations of crc32().  Some use a seed of 0 or ~0.
+ * Some xor at the end with ~0.  The generic crc32() function takes
+ * seed as an argument, and doesn't xor at the end.  Then individual
+ * users can do whatever they need.
+ *   drivers/net/smc9194.c uses seed ~0, doesn't xor with ~0.
+ *   fs/jffs2 uses seed 0, doesn't xor with ~0.
+ *   fs/partitions/efi.c uses seed ~0, xor's with ~0.
+ */
+
+/* see: Documentation/crc32.txt for a description of algorithms */
+
+/*
+ * lifted from the 3.8-rc2 kernel source for xfsprogs. Killed CONFIG_X86
+ * specific bits for just the generic algorithm. Also removed the big endian
+ * version of the algorithm as XFS only uses the little endian CRC version to
+ * match the hardware acceleration available on Intel CPUs.
+ */
+
+/* This is just the crc32 self test bits from crc32.c. */
+
+#ifndef _LIBFROG_CRC32CSELFTEST_H_
+#define _LIBFROG_CRC32CSELFTEST_H_
+
+/* 4096 random bytes */
+static uint8_t __attribute__((__aligned__(8))) test_buf[] =
+{
+	0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30,
+	0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4,
+	0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60,
+	0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c,
+	0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4,
+	0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a,
+	0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a,
+	0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4,
+	0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9,
+	0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4,
+	0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca,
+	0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61,
+	0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e,
+	0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 0x7a,
+	0x8d, 0x07, 0x63, 0xdb, 0x40, 0xe9, 0x0b, 0x6f,
+	0xad, 0x97, 0xf1, 0xed, 0xd0, 0x1e, 0x26, 0xfd,
+	0xbf, 0xb7, 0xc8, 0x04, 0x94, 0xf8, 0x8b, 0x8c,
+	0xf1, 0xab, 0x7a, 0xd4, 0xdd, 0xf3, 0xe8, 0x88,
+	0xc3, 0xed, 0x17, 0x8a, 0x9b, 0x40, 0x0d, 0x53,
+	0x62, 0x12, 0x03, 0x5f, 0x1b, 0x35, 0x32, 0x1f,
+	0xb4, 0x7b, 0x93, 0x78, 0x0d, 0xdb, 0xce, 0xa4,
+	0xc0, 0x47, 0xd5, 0xbf, 0x68, 0xe8, 0x5d, 0x74,
+	0x8f, 0x8e, 0x75, 0x1c, 0xb2, 0x4f, 0x9a, 0x60,
+	0xd1, 0xbe, 0x10, 0xf4, 0x5c, 0xa1, 0x53, 0x09,
+	0xa5, 0xe0, 0x09, 0x54, 0x85, 0x5c, 0xdc, 0x07,
+	0xe7, 0x21, 0x69, 0x7b, 0x8a, 0xfd, 0x90, 0xf1,
+	0x22, 0xd0, 0xb4, 0x36, 0x28, 0xe6, 0xb8, 0x0f,
+	0x39, 0xde, 0xc8, 0xf3, 0x86, 0x60, 0x34, 0xd2,
+	0x5e, 0xdf, 0xfd, 0xcf, 0x0f, 0xa9, 0x65, 0xf0,
+	0xd5, 0x4d, 0x96, 0x40, 0xe3, 0xdf, 0x3f, 0x95,
+	0x5a, 0x39, 0x19, 0x93, 0xf4, 0x75, 0xce, 0x22,
+	0x00, 0x1c, 0x93, 0xe2, 0x03, 0x66, 0xf4, 0x93,
+	0x73, 0x86, 0x81, 0x8e, 0x29, 0x44, 0x48, 0x86,
+	0x61, 0x7c, 0x48, 0xa3, 0x43, 0xd2, 0x9c, 0x8d,
+	0xd4, 0x95, 0xdd, 0xe1, 0x22, 0x89, 0x3a, 0x40,
+	0x4c, 0x1b, 0x8a, 0x04, 0xa8, 0x09, 0x69, 0x8b,
+	0xea, 0xc6, 0x55, 0x8e, 0x57, 0xe6, 0x64, 0x35,
+	0xf0, 0xc7, 0x16, 0x9f, 0x5d, 0x5e, 0x86, 0x40,
+	0x46, 0xbb, 0xe5, 0x45, 0x88, 0xfe, 0xc9, 0x63,
+	0x15, 0xfb, 0xf5, 0xbd, 0x71, 0x61, 0xeb, 0x7b,
+	0x78, 0x70, 0x07, 0x31, 0x03, 0x9f, 0xb2, 0xc8,
+	0xa7, 0xab, 0x47, 0xfd, 0xdf, 0xa0, 0x78, 0x72,
+	0xa4, 0x2a, 0xe4, 0xb6, 0xba, 0xc0, 0x1e, 0x86,
+	0x71, 0xe6, 0x3d, 0x18, 0x37, 0x70, 0xe6, 0xff,
+	0xe0, 0xbc, 0x0b, 0x22, 0xa0, 0x1f, 0xd3, 0xed,
+	0xa2, 0x55, 0x39, 0xab, 0xa8, 0x13, 0x73, 0x7c,
+	0x3f, 0xb2, 0xd6, 0x19, 0xac, 0xff, 0x99, 0xed,
+	0xe8, 0xe6, 0xa6, 0x22, 0xe3, 0x9c, 0xf1, 0x30,
+	0xdc, 0x01, 0x0a, 0x56, 0xfa, 0xe4, 0xc9, 0x99,
+	0xdd, 0xa8, 0xd8, 0xda, 0x35, 0x51, 0x73, 0xb4,
+	0x40, 0x86, 0x85, 0xdb, 0x5c, 0xd5, 0x85, 0x80,
+	0x14, 0x9c, 0xfd, 0x98, 0xa9, 0x82, 0xc5, 0x37,
+	0xff, 0x32, 0x5d, 0xd0, 0x0b, 0xfa, 0xdc, 0x04,
+	0x5e, 0x09, 0xd2, 0xca, 0x17, 0x4b, 0x1a, 0x8e,
+	0x15, 0xe1, 0xcc, 0x4e, 0x52, 0x88, 0x35, 0xbd,
+	0x48, 0xfe, 0x15, 0xa0, 0x91, 0xfd, 0x7e, 0x6c,
+	0x0e, 0x5d, 0x79, 0x1b, 0x81, 0x79, 0xd2, 0x09,
+	0x34, 0x70, 0x3d, 0x81, 0xec, 0xf6, 0x24, 0xbb,
+	0xfb, 0xf1, 0x7b, 0xdf, 0x54, 0xea, 0x80, 0x9b,
+	0xc7, 0x99, 0x9e, 0xbd, 0x16, 0x78, 0x12, 0x53,
+	0x5e, 0x01, 0xa7, 0x4e, 0xbd, 0x67, 0xe1, 0x9b,
+	0x4c, 0x0e, 0x61, 0x45, 0x97, 0xd2, 0xf0, 0x0f,
+	0xfe, 0x15, 0x08, 0xb7, 0x11, 0x4c, 0xe7, 0xff,
+	0x81, 0x53, 0xff, 0x91, 0x25, 0x38, 0x7e, 0x40,
+	0x94, 0xe5, 0xe0, 0xad, 0xe6, 0xd9, 0x79, 0xb6,
+	0x92, 0xc9, 0xfc, 0xde, 0xc3, 0x1a, 0x23, 0xbb,
+	0xdd, 0xc8, 0x51, 0x0c, 0x3a, 0x72, 0xfa, 0x73,
+	0x6f, 0xb7, 0xee, 0x61, 0x39, 0x03, 0x01, 0x3f,
+	0x7f, 0x94, 0x2e, 0x2e, 0xba, 0x3a, 0xbb, 0xb4,
+	0xfa, 0x6a, 0x17, 0xfe, 0xea, 0xef, 0x5e, 0x66,
+	0x97, 0x3f, 0x32, 0x3d, 0xd7, 0x3e, 0xb1, 0xf1,
+	0x6c, 0x14, 0x4c, 0xfd, 0x37, 0xd3, 0x38, 0x80,
+	0xfb, 0xde, 0xa6, 0x24, 0x1e, 0xc8, 0xca, 0x7f,
+	0x3a, 0x93, 0xd8, 0x8b, 0x18, 0x13, 0xb2, 0xe5,
+	0xe4, 0x93, 0x05, 0x53, 0x4f, 0x84, 0x66, 0xa7,
+	0x58, 0x5c, 0x7b, 0x86, 0x52, 0x6d, 0x0d, 0xce,
+	0xa4, 0x30, 0x7d, 0xb6, 0x18, 0x9f, 0xeb, 0xff,
+	0x22, 0xbb, 0x72, 0x29, 0xb9, 0x44, 0x0b, 0x48,
+	0x1e, 0x84, 0x71, 0x81, 0xe3, 0x6d, 0x73, 0x26,
+	0x92, 0xb4, 0x4d, 0x2a, 0x29, 0xb8, 0x1f, 0x72,
+	0xed, 0xd0, 0xe1, 0x64, 0x77, 0xea, 0x8e, 0x88,
+	0x0f, 0xef, 0x3f, 0xb1, 0x3b, 0xad, 0xf9, 0xc9,
+	0x8b, 0xd0, 0xac, 0xc6, 0xcc, 0xa9, 0x40, 0xcc,
+	0x76, 0xf6, 0x3b, 0x53, 0xb5, 0x88, 0xcb, 0xc8,
+	0x37, 0xf1, 0xa2, 0xba, 0x23, 0x15, 0x99, 0x09,
+	0xcc, 0xe7, 0x7a, 0x3b, 0x37, 0xf7, 0x58, 0xc8,
+	0x46, 0x8c, 0x2b, 0x2f, 0x4e, 0x0e, 0xa6, 0x5c,
+	0xea, 0x85, 0x55, 0xba, 0x02, 0x0e, 0x0e, 0x48,
+	0xbc, 0xe1, 0xb1, 0x01, 0x35, 0x79, 0x13, 0x3d,
+	0x1b, 0xc0, 0x53, 0x68, 0x11, 0xe7, 0x95, 0x0f,
+	0x9d, 0x3f, 0x4c, 0x47, 0x7b, 0x4d, 0x1c, 0xae,
+	0x50, 0x9b, 0xcb, 0xdd, 0x05, 0x8d, 0x9a, 0x97,
+	0xfd, 0x8c, 0xef, 0x0c, 0x1d, 0x67, 0x73, 0xa8,
+	0x28, 0x36, 0xd5, 0xb6, 0x92, 0x33, 0x40, 0x75,
+	0x0b, 0x51, 0xc3, 0x64, 0xba, 0x1d, 0xc2, 0xcc,
+	0xee, 0x7d, 0x54, 0x0f, 0x27, 0x69, 0xa7, 0x27,
+	0x63, 0x30, 0x29, 0xd9, 0xc8, 0x84, 0xd8, 0xdf,
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+	0x67, 0x0e, 0xa0, 0x70, 0x04, 0x47, 0x29, 0x40,
+	0x86, 0x0d, 0x34, 0x56, 0xa7, 0xc9, 0x35, 0x59,
+	0x68, 0xdc, 0x93, 0x81, 0x70, 0xee, 0x86, 0xd9,
+	0x80, 0x06, 0x40, 0x4f, 0x1a, 0x0d, 0x40, 0x30,
+	0x0b, 0xcb, 0x96, 0x47, 0xc1, 0xb7, 0x52, 0xfd,
+	0x56, 0xe0, 0x72, 0x4b, 0xfb, 0xbd, 0x92, 0x45,
+	0x61, 0x71, 0xc2, 0x33, 0x11, 0xbf, 0x52, 0x83,
+	0x79, 0x26, 0xe0, 0x49, 0x6b, 0xb7, 0x05, 0x8b,
+	0xe8, 0x0e, 0x87, 0x31, 0xd7, 0x9d, 0x8a, 0xf5,
+	0xc0, 0x5f, 0x2e, 0x58, 0x4a, 0xdb, 0x11, 0xb3,
+	0x6c, 0x30, 0x2a, 0x46, 0x19, 0xe3, 0x27, 0x84,
+	0x1f, 0x63, 0x6e, 0xf6, 0x57, 0xc7, 0xc9, 0xd8,
+	0x5e, 0xba, 0xb3, 0x87, 0xd5, 0x83, 0x26, 0x34,
+	0x21, 0x9e, 0x65, 0xde, 0x42, 0xd3, 0xbe, 0x7b,
+	0xbc, 0x91, 0x71, 0x44, 0x4d, 0x99, 0x3b, 0x31,
+	0xe5, 0x3f, 0x11, 0x4e, 0x7f, 0x13, 0x51, 0x3b,
+	0xae, 0x79, 0xc9, 0xd3, 0x81, 0x8e, 0x25, 0x40,
+	0x10, 0xfc, 0x07, 0x1e, 0xf9, 0x7b, 0x9a, 0x4b,
+	0x6c, 0xe3, 0xb3, 0xad, 0x1a, 0x0a, 0xdd, 0x9e,
+	0x59, 0x0c, 0xa2, 0xcd, 0xae, 0x48, 0x4a, 0x38,
+	0x5b, 0x47, 0x41, 0x94, 0x65, 0x6b, 0xbb, 0xeb,
+	0x5b, 0xe3, 0xaf, 0x07, 0x5b, 0xd4, 0x4a, 0xa2,
+	0xc9, 0x5d, 0x2f, 0x64, 0x03, 0xd7, 0x3a, 0x2c,
+	0x6e, 0xce, 0x76, 0x95, 0xb4, 0xb3, 0xc0, 0xf1,
+	0xe2, 0x45, 0x73, 0x7a, 0x5c, 0xab, 0xc1, 0xfc,
+	0x02, 0x8d, 0x81, 0x29, 0xb3, 0xac, 0x07, 0xec,
+	0x40, 0x7d, 0x45, 0xd9, 0x7a, 0x59, 0xee, 0x34,
+	0xf0, 0xe9, 0xd5, 0x7b, 0x96, 0xb1, 0x3d, 0x95,
+	0xcc, 0x86, 0xb5, 0xb6, 0x04, 0x2d, 0xb5, 0x92,
+	0x7e, 0x76, 0xf4, 0x06, 0xa9, 0xa3, 0x12, 0x0f,
+	0xb1, 0xaf, 0x26, 0xba, 0x7c, 0xfc, 0x7e, 0x1c,
+	0xbc, 0x2c, 0x49, 0x97, 0x53, 0x60, 0x13, 0x0b,
+	0xa6, 0x61, 0x83, 0x89, 0x42, 0xd4, 0x17, 0x0c,
+	0x6c, 0x26, 0x52, 0xc3, 0xb3, 0xd4, 0x67, 0xf5,
+	0xe3, 0x04, 0xb7, 0xf4, 0xcb, 0x80, 0xb8, 0xcb,
+	0x77, 0x56, 0x3e, 0xaa, 0x57, 0x54, 0xee, 0xb4,
+	0x2c, 0x67, 0xcf, 0xf2, 0xdc, 0xbe, 0x55, 0xf9,
+	0x43, 0x1f, 0x6e, 0x22, 0x97, 0x67, 0x7f, 0xc4,
+	0xef, 0xb1, 0x26, 0x31, 0x1e, 0x27, 0xdf, 0x41,
+	0x80, 0x47, 0x6c, 0xe2, 0xfa, 0xa9, 0x8c, 0x2a,
+	0xf6, 0xf2, 0xab, 0xf0, 0x15, 0xda, 0x6c, 0xc8,
+	0xfe, 0xb5, 0x23, 0xde, 0xa9, 0x05, 0x3f, 0x06,
+	0x54, 0x4c, 0xcd, 0xe1, 0xab, 0xfc, 0x0e, 0x62,
+	0x33, 0x31, 0x73, 0x2c, 0x76, 0xcb, 0xb4, 0x47,
+	0x1e, 0x20, 0xad, 0xd8, 0xf2, 0x31, 0xdd, 0xc4,
+	0x8b, 0x0c, 0x77, 0xbe, 0xe1, 0x8b, 0x26, 0x00,
+	0x02, 0x58, 0xd6, 0x8d, 0xef, 0xad, 0x74, 0x67,
+	0xab, 0x3f, 0xef, 0xcb, 0x6f, 0xb0, 0xcc, 0x81,
+	0x44, 0x4c, 0xaf, 0xe9, 0x49, 0x4f, 0xdb, 0xa0,
+	0x25, 0xa4, 0xf0, 0x89, 0xf1, 0xbe, 0xd8, 0x10,
+	0xff, 0xb1, 0x3b, 0x4b, 0xfa, 0x98, 0xf5, 0x79,
+	0x6d, 0x1e, 0x69, 0x4d, 0x57, 0xb1, 0xc8, 0x19,
+	0x1b, 0xbd, 0x1e, 0x8c, 0x84, 0xb7, 0x7b, 0xe8,
+	0xd2, 0x2d, 0x09, 0x41, 0x41, 0x37, 0x3d, 0xb1,
+	0x6f, 0x26, 0x5d, 0x71, 0x16, 0x3d, 0xb7, 0x83,
+	0x27, 0x2c, 0xa7, 0xb6, 0x50, 0xbd, 0x91, 0x86,
+	0xab, 0x24, 0xa1, 0x38, 0xfd, 0xea, 0x71, 0x55,
+	0x7e, 0x9a, 0x07, 0x77, 0x4b, 0xfa, 0x61, 0x66,
+	0x20, 0x1e, 0x28, 0x95, 0x18, 0x1b, 0xa4, 0xa0,
+	0xfd, 0xc0, 0x89, 0x72, 0x43, 0xd9, 0x3b, 0x49,
+	0x5a, 0x3f, 0x9d, 0xbf, 0xdb, 0xb4, 0x46, 0xea,
+	0x42, 0x01, 0x77, 0x23, 0x68, 0x95, 0xb6, 0x24,
+	0xb3, 0xa8, 0x6c, 0x28, 0x3b, 0x11, 0x40, 0x7e,
+	0x18, 0x65, 0x6d, 0xd8, 0x24, 0x42, 0x7d, 0x88,
+	0xc0, 0x52, 0xd9, 0x05, 0xe4, 0x95, 0x90, 0x87,
+	0x8c, 0xf4, 0xd0, 0x6b, 0xb9, 0x83, 0x99, 0x34,
+	0x6d, 0xfe, 0x54, 0x40, 0x94, 0x52, 0x21, 0x4f,
+	0x14, 0x25, 0xc5, 0xd6, 0x5e, 0x95, 0xdc, 0x0a,
+	0x2b, 0x89, 0x20, 0x11, 0x84, 0x48, 0xd6, 0x3a,
+	0xcd, 0x5c, 0x24, 0xad, 0x62, 0xe3, 0xb1, 0x93,
+	0x25, 0x8d, 0xcd, 0x7e, 0xfc, 0x27, 0xa3, 0x37,
+	0xfd, 0x84, 0xfc, 0x1b, 0xb2, 0xf1, 0x27, 0x38,
+	0x5a, 0xb7, 0xfc, 0xf2, 0xfa, 0x95, 0x66, 0xd4,
+	0xfb, 0xba, 0xa7, 0xd7, 0xa3, 0x72, 0x69, 0x48,
+	0x48, 0x8c, 0xeb, 0x28, 0x89, 0xfe, 0x33, 0x65,
+	0x5a, 0x36, 0x01, 0x7e, 0x06, 0x79, 0x0a, 0x09,
+	0x3b, 0x74, 0x11, 0x9a, 0x6e, 0xbf, 0xd4, 0x9e,
+	0x58, 0x90, 0x49, 0x4f, 0x4d, 0x08, 0xd4, 0xe5,
+	0x4a, 0x09, 0x21, 0xef, 0x8b, 0xb8, 0x74, 0x3b,
+	0x91, 0xdd, 0x36, 0x85, 0x60, 0x2d, 0xfa, 0xd4,
+	0x45, 0x7b, 0x45, 0x53, 0xf5, 0x47, 0x87, 0x7e,
+	0xa6, 0x37, 0xc8, 0x78, 0x7a, 0x68, 0x9d, 0x8d,
+	0x65, 0x2c, 0x0e, 0x91, 0x5c, 0xa2, 0x60, 0xf0,
+	0x8e, 0x3f, 0xe9, 0x1a, 0xcd, 0xaa, 0xe7, 0xd5,
+	0x77, 0x18, 0xaf, 0xc9, 0xbc, 0x18, 0xea, 0x48,
+	0x1b, 0xfb, 0x22, 0x48, 0x70, 0x16, 0x29, 0x9e,
+	0x5b, 0xc1, 0x2c, 0x66, 0x23, 0xbc, 0xf0, 0x1f,
+	0xef, 0xaf, 0xe4, 0xd6, 0x04, 0x19, 0x82, 0x7a,
+	0x0b, 0xba, 0x4b, 0x46, 0xb1, 0x6a, 0x85, 0x5d,
+	0xb4, 0x73, 0xd6, 0x21, 0xa1, 0x71, 0x60, 0x14,
+	0xee, 0x0a, 0x77, 0xc4, 0x66, 0x2e, 0xf9, 0x69,
+	0x30, 0xaf, 0x41, 0x0b, 0xc8, 0x83, 0x3c, 0x53,
+	0x99, 0x19, 0x27, 0x46, 0xf7, 0x41, 0x6e, 0x56,
+	0xdc, 0x94, 0x28, 0x67, 0x4e, 0xb7, 0x25, 0x48,
+	0x8a, 0xc2, 0xe0, 0x60, 0x96, 0xcc, 0x18, 0xf4,
+	0x84, 0xdd, 0xa7, 0x5e, 0x3e, 0x05, 0x0b, 0x26,
+	0x26, 0xb2, 0x5c, 0x1f, 0x57, 0x1a, 0x04, 0x7e,
+	0x6a, 0xe3, 0x2f, 0xb4, 0x35, 0xb6, 0x38, 0x40,
+	0x40, 0xcd, 0x6f, 0x87, 0x2e, 0xef, 0xa3, 0xd7,
+	0xa9, 0xc2, 0xe8, 0x0d, 0x27, 0xdf, 0x44, 0x62,
+	0x99, 0xa0, 0xfc, 0xcf, 0x81, 0x78, 0xcb, 0xfe,
+	0xe5, 0xa0, 0x03, 0x4e, 0x6c, 0xd7, 0xf4, 0xaf,
+	0x7a, 0xbb, 0x61, 0x82, 0xfe, 0x71, 0x89, 0xb2,
+	0x22, 0x7c, 0x8e, 0x83, 0x04, 0xce, 0xf6, 0x5d,
+	0x84, 0x8f, 0x95, 0x6a, 0x7f, 0xad, 0xfd, 0x32,
+	0x9c, 0x5e, 0xe4, 0x9c, 0x89, 0x60, 0x54, 0xaa,
+	0x96, 0x72, 0xd2, 0xd7, 0x36, 0x85, 0xa9, 0x45,
+	0xd2, 0x2a, 0xa1, 0x81, 0x49, 0x6f, 0x7e, 0x04,
+	0xfa, 0xe2, 0xfe, 0x90, 0x26, 0x77, 0x5a, 0x33,
+	0xb8, 0x04, 0x9a, 0x7a, 0xe6, 0x4c, 0x4f, 0xad,
+	0x72, 0x96, 0x08, 0x28, 0x58, 0x13, 0xf8, 0xc4,
+	0x1c, 0xf0, 0xc3, 0x45, 0x95, 0x49, 0x20, 0x8c,
+	0x9f, 0x39, 0x70, 0xe1, 0x77, 0xfe, 0xd5, 0x4b,
+	0xaf, 0x86, 0xda, 0xef, 0x22, 0x06, 0x83, 0x36,
+	0x29, 0x12, 0x11, 0x40, 0xbc, 0x3b, 0x86, 0xaa,
+	0xaa, 0x65, 0x60, 0xc3, 0x80, 0xca, 0xed, 0xa9,
+	0xf3, 0xb0, 0x79, 0x96, 0xa2, 0x55, 0x27, 0x28,
+	0x55, 0x73, 0x26, 0xa5, 0x50, 0xea, 0x92, 0x4b,
+	0x3c, 0x5c, 0x82, 0x33, 0xf0, 0x01, 0x3f, 0x03,
+	0xc1, 0x08, 0x05, 0xbf, 0x98, 0xf4, 0x9b, 0x6d,
+	0xa5, 0xa8, 0xb4, 0x82, 0x0c, 0x06, 0xfa, 0xff,
+	0x2d, 0x08, 0xf3, 0x05, 0x4f, 0x57, 0x2a, 0x39,
+	0xd4, 0x83, 0x0d, 0x75, 0x51, 0xd8, 0x5b, 0x1b,
+	0xd3, 0x51, 0x5a, 0x32, 0x2a, 0x9b, 0x32, 0xb2,
+	0xf2, 0xa4, 0x96, 0x12, 0xf2, 0xae, 0x40, 0x34,
+	0x67, 0xa8, 0xf5, 0x44, 0xd5, 0x35, 0x53, 0xfe,
+	0xa3, 0x60, 0x96, 0x63, 0x0f, 0x1f, 0x6e, 0xb0,
+	0x5a, 0x42, 0xa6, 0xfc, 0x51, 0x0b, 0x60, 0x27,
+	0xbc, 0x06, 0x71, 0xed, 0x65, 0x5b, 0x23, 0x86,
+	0x4a, 0x07, 0x3b, 0x22, 0x07, 0x46, 0xe6, 0x90,
+	0x3e, 0xf3, 0x25, 0x50, 0x1b, 0x4c, 0x7f, 0x03,
+	0x08, 0xa8, 0x36, 0x6b, 0x87, 0xe5, 0xe3, 0xdb,
+	0x9a, 0x38, 0x83, 0xff, 0x9f, 0x1a, 0x9f, 0x57,
+	0xa4, 0x2a, 0xf6, 0x37, 0xbc, 0x1a, 0xff, 0xc9,
+	0x1e, 0x35, 0x0c, 0xc3, 0x7c, 0xa3, 0xb2, 0xe5,
+	0xd2, 0xc6, 0xb4, 0x57, 0x47, 0xe4, 0x32, 0x16,
+	0x6d, 0xa9, 0xae, 0x64, 0xe6, 0x2d, 0x8d, 0xc5,
+	0x8d, 0x50, 0x8e, 0xe8, 0x1a, 0x22, 0x34, 0x2a,
+	0xd9, 0xeb, 0x51, 0x90, 0x4a, 0xb1, 0x41, 0x7d,
+	0x64, 0xf9, 0xb9, 0x0d, 0xf6, 0x23, 0x33, 0xb0,
+	0x33, 0xf4, 0xf7, 0x3f, 0x27, 0x84, 0xc6, 0x0f,
+	0x54, 0xa5, 0xc0, 0x2e, 0xec, 0x0b, 0x3a, 0x48,
+	0x6e, 0x80, 0x35, 0x81, 0x43, 0x9b, 0x90, 0xb1,
+	0xd0, 0x2b, 0xea, 0x21, 0xdc, 0xda, 0x5b, 0x09,
+	0xf4, 0xcc, 0x10, 0xb4, 0xc7, 0xfe, 0x79, 0x51,
+	0xc3, 0xc5, 0xac, 0x88, 0x74, 0x84, 0x0b, 0x4b,
+	0xca, 0x79, 0x16, 0x29, 0xfb, 0x69, 0x54, 0xdf,
+	0x41, 0x7e, 0xe9, 0xc7, 0x8e, 0xea, 0xa5, 0xfe,
+	0xfc, 0x76, 0x0e, 0x90, 0xc4, 0x92, 0x38, 0xad,
+	0x7b, 0x48, 0xe6, 0x6e, 0xf7, 0x21, 0xfd, 0x4e,
+	0x93, 0x0a, 0x7b, 0x41, 0x83, 0x68, 0xfb, 0x57,
+	0x51, 0x76, 0x34, 0xa9, 0x6c, 0x00, 0xaa, 0x4f,
+	0x66, 0x65, 0x98, 0x4a, 0x4f, 0xa3, 0xa0, 0xef,
+	0x69, 0x3f, 0xe3, 0x1c, 0x92, 0x8c, 0xfd, 0xd8,
+	0xe8, 0xde, 0x7c, 0x7f, 0x3e, 0x84, 0x8e, 0x69,
+	0x3c, 0xf1, 0xf2, 0x05, 0x46, 0xdc, 0x2f, 0x9d,
+	0x5e, 0x6e, 0x4c, 0xfb, 0xb5, 0x99, 0x2a, 0x59,
+	0x63, 0xc1, 0x34, 0xbc, 0x57, 0xc0, 0x0d, 0xb9,
+	0x61, 0x25, 0xf3, 0x33, 0x23, 0x51, 0xb6, 0x0d,
+	0x07, 0xa6, 0xab, 0x94, 0x4a, 0xb7, 0x2a, 0xea,
+	0xee, 0xac, 0xa3, 0xc3, 0x04, 0x8b, 0x0e, 0x56,
+	0xfe, 0x44, 0xa7, 0x39, 0xe2, 0xed, 0xed, 0xb4,
+	0x22, 0x2b, 0xac, 0x12, 0x32, 0x28, 0x91, 0xd8,
+	0xa5, 0xab, 0xff, 0x5f, 0xe0, 0x4b, 0xda, 0x78,
+	0x17, 0xda, 0xf1, 0x01, 0x5b, 0xcd, 0xe2, 0x5f,
+	0x50, 0x45, 0x73, 0x2b, 0xe4, 0x76, 0x77, 0xf4,
+	0x64, 0x1d, 0x43, 0xfb, 0x84, 0x7a, 0xea, 0x91,
+	0xae, 0xf9, 0x9e, 0xb7, 0xb4, 0xb0, 0x91, 0x5f,
+	0x16, 0x35, 0x9a, 0x11, 0xb8, 0xc7, 0xc1, 0x8c,
+	0xc6, 0x10, 0x8d, 0x2f, 0x63, 0x4a, 0xa7, 0x57,
+	0x3a, 0x51, 0xd6, 0x32, 0x2d, 0x64, 0x72, 0xd4,
+	0x66, 0xdc, 0x10, 0xa6, 0x67, 0xd6, 0x04, 0x23,
+	0x9d, 0x0a, 0x11, 0x77, 0xdd, 0x37, 0x94, 0x17,
+	0x3c, 0xbf, 0x8b, 0x65, 0xb0, 0x2e, 0x5e, 0x66,
+	0x47, 0x64, 0xac, 0xdd, 0xf0, 0x84, 0xfd, 0x39,
+	0xfa, 0x15, 0x5d, 0xef, 0xae, 0xca, 0xc1, 0x36,
+	0xa7, 0x5c, 0xbf, 0xc7, 0x08, 0xc2, 0x66, 0x00,
+	0x74, 0x74, 0x4e, 0x27, 0x3f, 0x55, 0x8a, 0xb7,
+	0x38, 0x66, 0x83, 0x6d, 0xcf, 0x99, 0x9e, 0x60,
+	0x8f, 0xdd, 0x2e, 0x62, 0x22, 0x0e, 0xef, 0x0c,
+	0x98, 0xa7, 0x85, 0x74, 0x3b, 0x9d, 0xec, 0x9e,
+	0xa9, 0x19, 0x72, 0xa5, 0x7f, 0x2c, 0x39, 0xb7,
+	0x7d, 0xb7, 0xf1, 0x12, 0x65, 0x27, 0x4b, 0x5a,
+	0xde, 0x17, 0xfe, 0xad, 0x44, 0xf3, 0x20, 0x4d,
+	0xfd, 0xe4, 0x1f, 0xb5, 0x81, 0xb0, 0x36, 0x37,
+	0x08, 0x6f, 0xc3, 0x0c, 0xe9, 0x85, 0x98, 0x82,
+	0xa9, 0x62, 0x0c, 0xc4, 0x97, 0xc0, 0x50, 0xc8,
+	0xa7, 0x3c, 0x50, 0x9f, 0x43, 0xb9, 0xcd, 0x5e,
+	0x4d, 0xfa, 0x1c, 0x4b, 0x0b, 0xa9, 0x98, 0x85,
+	0x38, 0x92, 0xac, 0x8d, 0xe4, 0xad, 0x9b, 0x98,
+	0xab, 0xd9, 0x38, 0xac, 0x62, 0x52, 0xa3, 0x22,
+	0x63, 0x0f, 0xbf, 0x95, 0x48, 0xdf, 0x69, 0xe7,
+	0x8b, 0x33, 0xd5, 0xb2, 0xbd, 0x05, 0x49, 0x49,
+	0x9d, 0x57, 0x73, 0x19, 0x33, 0xae, 0xfa, 0x33,
+	0xf1, 0x19, 0xa8, 0x80, 0xce, 0x04, 0x9f, 0xbc,
+	0x1d, 0x65, 0x82, 0x1b, 0xe5, 0x3a, 0x51, 0xc8,
+	0x1c, 0x21, 0xe3, 0x5d, 0xf3, 0x7d, 0x9b, 0x2f,
+	0x2c, 0x1d, 0x4a, 0x7f, 0x9b, 0x68, 0x35, 0xa3,
+	0xb2, 0x50, 0xf7, 0x62, 0x79, 0xcd, 0xf4, 0x98,
+	0x4f, 0xe5, 0x63, 0x7c, 0x3e, 0x45, 0x31, 0x8c,
+	0x16, 0xa0, 0x12, 0xc8, 0x58, 0xce, 0x39, 0xa6,
+	0xbc, 0x54, 0xdb, 0xc5, 0xe0, 0xd5, 0xba, 0xbc,
+	0xb9, 0x04, 0xf4, 0x8d, 0xe8, 0x2f, 0x15, 0x9d,
+};
+
+/* 100 test cases */
+static struct crc_test {
+	uint32_t crc;	/* random starting crc */
+	uint32_t start;	/* random 6 bit offset in buf */
+	uint32_t length;	/* random 11 bit length of test */
+	uint32_t crc32c_le;	/* expected crc32c_le result */
+} test[] =
+{
+	{0x674bf11d, 0x00000038, 0x00000542, 0xf6e93d6c},
+	{0x35c672c6, 0x0000003a, 0x000001aa, 0x0fe92aca},
+	{0x496da28e, 0x00000039, 0x000005af, 0x52e1ebb8},
+	{0x09a9b90e, 0x00000027, 0x000001f8, 0x0798af9a},
+	{0xdc97e5a9, 0x00000025, 0x000003b6, 0x18eb3152},
+	{0x47c58900, 0x0000000a, 0x000000b9, 0xd00d08c7},
+	{0x292561e8, 0x0000000c, 0x00000403, 0x8ba966bc},
+	{0x415037f6, 0x00000003, 0x00000676, 0x11d694a2},
+	{0x3466e707, 0x00000026, 0x00000042, 0x6ab3208d},
+	{0xafd1281b, 0x00000023, 0x000002ee, 0xba4603c5},
+	{0xd3857b18, 0x00000028, 0x000004a2, 0xe6071c6f},
+	{0x1d825a8f, 0x0000002b, 0x0000050b, 0x179ec30a},
+	{0x5033e3bc, 0x0000000b, 0x00000078, 0x0903beb8},
+	{0x94f1fb5e, 0x0000000f, 0x000003a2, 0x6a7cb4fa},
+	{0xc9a0fe14, 0x00000009, 0x00000473, 0xdb535801},
+	{0x88a034b1, 0x0000001c, 0x000005ad, 0x92bed597},
+	{0xf0f72239, 0x00000020, 0x0000026d, 0x192a3f1b},
+	{0xcc20a5e3, 0x0000003b, 0x0000067a, 0xccbaec1a},
+	{0xce589c95, 0x0000002b, 0x00000641, 0x7eabae4d},
+	{0x78edc885, 0x00000035, 0x000005be, 0x28c72982},
+	{0x9d40a377, 0x0000003b, 0x00000038, 0xc3cd4d18},
+	{0x703d0e01, 0x0000003c, 0x000006f1, 0xbca8f0e7},
+	{0x776bf505, 0x0000000f, 0x000005b2, 0x713f60b3},
+	{0x4a3e7854, 0x00000027, 0x000004b8, 0xebd08fd5},
+	{0x209172dd, 0x0000003b, 0x00000356, 0x64406c59},
+	{0x3ba4cc5b, 0x0000002f, 0x00000203, 0x7421890e},
+	{0xfc62f297, 0x00000000, 0x00000079, 0xe9347603},
+	{0x64280b8b, 0x00000016, 0x000007ab, 0x1bef9060},
+	{0x97dd724b, 0x00000033, 0x000007ad, 0x34720072},
+	{0x61394b52, 0x00000035, 0x00000571, 0x48310f59},
+	{0x29b4faff, 0x00000024, 0x0000006e, 0x783a4213},
+	{0x29bfb1dc, 0x0000000b, 0x00000244, 0x9e8efd41},
+	{0x86ae934b, 0x00000035, 0x00000104, 0xfc3d34a5},
+	{0xc4c1024e, 0x0000002e, 0x000006b1, 0x17a52ae2},
+	{0x3287a80a, 0x00000026, 0x00000496, 0x886d935a},
+	{0xa4db423e, 0x00000023, 0x0000045d, 0xeaaeaeb2},
+	{0x7a1078df, 0x00000015, 0x0000014a, 0x8e900a4b},
+	{0x6048bd5b, 0x00000006, 0x0000006a, 0xd74662b1},
+	{0xd8f9ea20, 0x0000003d, 0x00000277, 0xd26752ba},
+	{0xea5ec3b4, 0x0000002a, 0x000004fe, 0x8b1fcd62},
+	{0x2dfb005d, 0x00000016, 0x00000345, 0xf54342fe},
+	{0x5a214ade, 0x00000020, 0x000005b6, 0x5b95b988},
+	{0xf0ab9cca, 0x00000032, 0x00000515, 0x2e1176be},
+	{0x91b444f9, 0x0000002e, 0x000007f8, 0x66120546},
+	{0x1b5d2ddb, 0x0000002e, 0x0000012c, 0xf256a5cc},
+	{0xd824d1bb, 0x0000003a, 0x000007b5, 0x4af1dd69},
+	{0x0470180c, 0x00000034, 0x000001f0, 0x56f0a04a},
+	{0xffaa3a3f, 0x00000036, 0x00000299, 0x74f6b6b2},
+	{0x6406cfeb, 0x00000023, 0x00000600, 0x085951fd},
+	{0xb24aaa38, 0x0000003e, 0x000004a1, 0xc65387eb},
+	{0x58b2ab7c, 0x00000039, 0x000002b4, 0x1ca9257b},
+	{0x3db85970, 0x00000006, 0x000002b6, 0xfd196d76},
+	{0x857830c5, 0x00000003, 0x00000590, 0x5ef88339},
+	{0xe1fcd978, 0x0000003e, 0x000007d8, 0x2c3714d9},
+	{0xb982a768, 0x00000016, 0x000006e0, 0x58576548},
+	{0x1d581ce8, 0x0000001e, 0x0000058b, 0xfd7c57de},
+	{0x2456719b, 0x00000025, 0x00000503, 0xd5fedd59},
+	{0xfae6d8f2, 0x00000000, 0x0000055d, 0x1cc3b17b},
+	{0xcba828e3, 0x00000039, 0x000002ce, 0x270eed73},
+	{0x13d25952, 0x0000000a, 0x0000072d, 0x91ecbb11},
+	{0x0342be3f, 0x00000015, 0x00000599, 0x05ed8d0c},
+	{0xeaa344e0, 0x00000014, 0x000004d8, 0x0b09ad5b},
+	{0xbbb52021, 0x0000003b, 0x00000272, 0xf8d511fb},
+	{0xb66384dc, 0x0000001d, 0x000007fc, 0x5ad832cc},
+	{0x616c01b6, 0x00000022, 0x000002c8, 0x1214d196},
+	{0xce2bdaad, 0x00000016, 0x0000062a, 0x5747218a},
+	{0x00fe84d7, 0x00000005, 0x00000205, 0xde8f14de},
+	{0xbebdcb4c, 0x00000006, 0x0000055d, 0x3563b7b9},
+	{0xd8b1a02a, 0x00000010, 0x00000387, 0x071475d0},
+	{0x3b96cad2, 0x00000036, 0x00000347, 0x54c79d60},
+	{0xc94c1ed7, 0x00000005, 0x0000038b, 0x4c53eee6},
+	{0x1aad454e, 0x00000025, 0x000002b2, 0x10137a3c},
+	{0xa4fec9a6, 0x00000000, 0x000006d6, 0xaa9d6c73},
+	{0x1bbe71e2, 0x0000001f, 0x000002fd, 0xb63d23e7},
+	{0x4201c7e4, 0x00000002, 0x000002b7, 0x7f53e9cf},
+	{0x23fddc96, 0x00000003, 0x00000627, 0x13c1cd83},
+	{0xd82ba25c, 0x00000016, 0x0000063e, 0x49ff5867},
+	{0x786f2032, 0x0000002d, 0x0000060f, 0x8467f211},
+	{0xfebe4e1f, 0x0000002a, 0x000004f2, 0x3f9683b2},
+	{0x1a6e0a39, 0x00000008, 0x00000672, 0x76a3f874},
+	{0x56000ab8, 0x0000000e, 0x000000e5, 0x863b702f},
+	{0x4717fe0c, 0x00000000, 0x000006ec, 0xdc6c58ff},
+	{0xd5d5d68e, 0x0000003c, 0x000003a3, 0x0622cc95},
+	{0xc25dd6c6, 0x00000024, 0x000006c0, 0xe85605cd},
+	{0xe9b11300, 0x00000023, 0x00000683, 0x31da5f06},
+	{0x95cd285e, 0x00000001, 0x00000047, 0xa1f2e784},
+	{0xd9245a25, 0x0000001e, 0x000003a6, 0xb07cc616},
+	{0x103279db, 0x00000006, 0x0000039b, 0xbf943b6c},
+	{0x1cba3172, 0x00000027, 0x000001c8, 0x2c01af1c},
+	{0x8f613739, 0x0000000c, 0x000001df, 0x0fe5f56d},
+	{0x1c6aa90d, 0x0000001b, 0x0000053c, 0xf8943b2d},
+	{0xaabe5b93, 0x0000003d, 0x00000715, 0xe4d89272},
+	{0xf15dd038, 0x00000006, 0x000006db, 0x7c2f6bbb},
+	{0x584dd49c, 0x00000020, 0x000007bc, 0xabbf388b},
+	{0x5d8c9506, 0x00000020, 0x00000470, 0x1dca1f4e},
+	{0xb80d17b0, 0x00000032, 0x00000346, 0x5c170e23},
+	{0xdaf0592e, 0x00000023, 0x000007b0, 0xc0e9d672},
+	{0x4793cc85, 0x0000000d, 0x00000706, 0xc18bdc86},
+	{0x82ebf64e, 0x00000009, 0x000007c3, 0xa874fcdd},
+	{0xb18a0319, 0x00000026, 0x000007db, 0x9dc0bb48},
+};
+
+static int
+crc32c_test(void)
+{
+	int i;
+	int errors = 0;
+	int bytes = 0;
+	struct timeval start, stop;
+	uint64_t usec;
+
+	/* keep static to prevent cache warming code from
+	 * getting eliminated by the compiler */
+	static uint32_t crc;
+
+	/* pre-warm the cache */
+	for (i = 0; i < 100; i++) {
+		bytes += 2*test[i].length;
+
+		crc ^= crc32c_le(test[i].crc, test_buf +
+		    test[i].start, test[i].length);
+	}
+
+	gettimeofday(&start, NULL);
+	for (i = 0; i < 100; i++) {
+		if (test[i].crc32c_le != crc32c_le(test[i].crc, test_buf +
+		    test[i].start, test[i].length))
+			errors++;
+	}
+	gettimeofday(&stop, NULL);
+
+	usec = stop.tv_usec - start.tv_usec +
+		1000000 * (stop.tv_sec - start.tv_sec);
+
+	if (errors)
+		printf("crc32c: %d self tests failed\n", errors);
+	else {
+		printf("crc32c: tests passed, %d bytes in %" PRIu64 " usec\n",
+			bytes, usec);
+	}
+
+	return errors;
+}
+
+#endif /* _LIBFROG_CRC32CSELFTEST_H_ */
io/Makefile +4 -4
index 6270fc16..484e2b5a 100644
@@ -9,10 +9,10 @@ LTCOMMAND = xfs_io
 LSRCFILES = xfs_bmap.sh xfs_freeze.sh xfs_mkfile.sh
 HFILES = init.h io.h
 CFILES = init.c \
-	attr.c bmap.c cowextsize.c encrypt.c file.c freeze.c fsync.c \
-	getrusage.c imap.c inject.c label.c link.c mmap.c open.c parent.c \
-	pread.c prealloc.c pwrite.c reflink.c resblks.c scrub.c seek.c \
-	shutdown.c stat.c swapext.c sync.c truncate.c utimes.c
+	attr.c bmap.c crc32cselftest.c cowextsize.c encrypt.c file.c freeze.c \
+	fsync.c getrusage.c imap.c inject.c label.c link.c mmap.c open.c \
+	parent.c pread.c prealloc.c pwrite.c reflink.c resblks.c scrub.c \
+	seek.c shutdown.c stat.c swapext.c sync.c truncate.c utimes.c
 
 LLDLIBS = $(LIBXCMD) $(LIBHANDLE) $(LIBFROG) $(LIBPTHREAD)
 LTDEPENDENCIES = $(LIBXCMD) $(LIBHANDLE) $(LIBFROG)
io/crc32cselftest.c new file +37 -0
new file mode 100644
index 00000000..28201384
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 Oracle, Inc.
+ * All Rights Reserved.
+ */
+
+#include "platform_defs.h"
+#include "command.h"
+#include "init.h"
+#include "io.h"
+#include "crc32c.h"
+#include "crc32cselftest.h"
+
+static int
+crc32cselftest_f(
+	int		argc,
+	char		**argv)
+{
+	return crc32c_test() != 0;
+}
+
+static const cmdinfo_t	crc32cselftest_cmd = {
+	.name		= "crc32cselftest",
+	.cfunc		= crc32cselftest_f,
+	.argmin		= 0,
+	.argmax		= 0,
+	.canpush	= 0,
+	.flags		= CMD_FLAG_ONESHOT | CMD_FLAG_FOREIGN_OK |
+			  CMD_NOFILE_OK | CMD_NOMAP_OK,
+	.oneline	= N_("self test of crc32c implementation"),
+};
+
+void
+crc32cselftest_init(void)
+{
+	add_command(&crc32cselftest_cmd);
+}
io/init.c +1 -0
index b5eade39..83f08f2d 100644
@@ -85,6 +85,7 @@ init_commands(void)
 	sync_range_init();
 	truncate_init();
 	utimes_init();
+	crc32cselftest_init();
 }
 
 /*
io/io.h +1 -0
index 9278ad00..75ce7aab 100644
@@ -182,3 +182,4 @@ extern void		log_writes_init(void);
 
 extern void		scrub_init(void);
 extern void		repair_init(void);
+extern void		crc32cselftest_init(void);
libfrog/crc32.c +1 -668

675 lines not on this page · raw message

man/man8/xfs_io.8 +4 -0
index cce4dcb9..f1099c32 100644
@@ -1222,6 +1222,10 @@ If the label is longer than the filesystem will accept,
 .B xfs_io
 will print an error message.  XFS filesystem labels can be at most 12
 characters long.
+.TP
+.B crc32cselftest
+Test the internal crc32c implementation to make sure that it computes results
+correctly.
 .SH SEE ALSO
 .BR mkfs.xfs (8),
 .BR xfsctl (3),