Revision a742994aa2e271eb8cd8e043d276515ec858ed73 authored by Filipe Manana on 13 February 2015, 16:56:14 UTC, committed by Chris Mason on 14 February 2015, 16:22:49 UTC
If we are recording in the tree log that an inode has new names (new hard
links were added), we would drop items, belonging to the inode, that we
shouldn't:
1) When the flag BTRFS_INODE_COPY_EVERYTHING is set in the inode's runtime
flags, we ended up dropping all the extent and xattr items that were
previously logged. This was done only in memory, since logging a new
name doesn't imply syncing the log;
2) When the flag BTRFS_INODE_COPY_EVERYTHING is set in the inode's runtime
flags, we ended up dropping all the xattr items that were previously
logged. Like the case before, this was done only in memory because
logging a new name doesn't imply syncing the log.
This led to some surprises in scenarios such as the following:
1) write some extents to an inode;
2) fsync the inode;
3) truncate the inode or delete/modify some of its xattrs
4) add a new hard link for that inode
5) fsync some other file, to force the log tree to be durably persisted
6) power failure happens
The next time the fs is mounted, the fsync log replay code is executed,
and the resulting file doesn't have the content it had when the last fsync
against it was performed, instead if has a content matching what it had
when the last transaction commit happened.
So change the behaviour such that when a new name is logged, only the inode
item and reference items are processed.
This is easy to reproduce with the test I just made for xfstests, whose
main body is:
_scratch_mkfs >> $seqres.full 2>&1
_init_flakey
_mount_flakey
# Create our test file with some data.
$XFS_IO_PROG -f -c "pwrite -S 0xaa -b 8K 0 8K" \
$SCRATCH_MNT/foo | _filter_xfs_io
# Make sure the file is durably persisted.
sync
# Append some data to our file, to increase its size.
$XFS_IO_PROG -f -c "pwrite -S 0xcc -b 4K 8K 4K" \
$SCRATCH_MNT/foo | _filter_xfs_io
# Fsync the file, so from this point on if a crash/power failure happens, our
# new data is guaranteed to be there next time the fs is mounted.
$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/foo
# Now shrink our file to 5000 bytes.
$XFS_IO_PROG -c "truncate 5000" $SCRATCH_MNT/foo
# Now do an expanding truncate to a size larger than what we had when we last
# fsync'ed our file. This is just to verify that after power failure and
# replaying the fsync log, our file matches what it was when we last fsync'ed
# it - 12Kb size, first 8Kb of data had a value of 0xaa and the last 4Kb of
# data had a value of 0xcc.
$XFS_IO_PROG -c "truncate 32K" $SCRATCH_MNT/foo
# Add one hard link to our file. This made btrfs drop all of our file's
# metadata from the fsync log, including the metadata relative to the
# extent we just wrote and fsync'ed. This change was made only to the fsync
# log in memory, so adding the hard link alone doesn't change the persisted
# fsync log. This happened because the previous truncates set the runtime
# flag BTRFS_INODE_NEEDS_FULL_SYNC in the btrfs inode structure.
ln $SCRATCH_MNT/foo $SCRATCH_MNT/foo_link
# Now make sure the in memory fsync log is durably persisted.
# Creating and fsync'ing another file will do it.
# After this our persisted fsync log will no longer have metadata for our file
# foo that points to the extent we wrote and fsync'ed before.
touch $SCRATCH_MNT/bar
$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/bar
# As expected, before the crash/power failure, we should be able to see a file
# with a size of 32Kb, with its first 5000 bytes having the value 0xaa and all
# the remaining bytes with value 0x00.
echo "File content before:"
od -t x1 $SCRATCH_MNT/foo
# Simulate a crash/power loss.
_load_flakey_table $FLAKEY_DROP_WRITES
_unmount_flakey
_load_flakey_table $FLAKEY_ALLOW_WRITES
_mount_flakey
# After mounting the fs again, the fsync log was replayed.
# The expected result is to see a file with a size of 12Kb, with its first 8Kb
# of data having the value 0xaa and its last 4Kb of data having a value of 0xcc.
# The btrfs bug used to leave the file as it used te be as of the last
# transaction commit - that is, with a size of 8Kb with all bytes having a
# value of 0xaa.
echo "File content after:"
od -t x1 $SCRATCH_MNT/foo
The test case for xfstests follows soon.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
1 parent 1a4bcf4
crc32.c
/*
* 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 <Matt_Domsch@dell.com>
* Nicer crc32 functions/docs submitted by linux@horizon.com. 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 <Matt_Domsch@dell.com>
* 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.
*
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*/
/* see: Documentation/crc32.txt for a description of algorithms */
#include <linux/crc32.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/sched.h>
#include "crc32defs.h"
#if CRC_LE_BITS > 8
# define tole(x) ((__force u32) cpu_to_le32(x))
#else
# define tole(x) (x)
#endif
#if CRC_BE_BITS > 8
# define tobe(x) ((__force u32) cpu_to_be32(x))
#else
# define tobe(x) (x)
#endif
#include "crc32table.h"
MODULE_AUTHOR("Matt Domsch <Matt_Domsch@dell.com>");
MODULE_DESCRIPTION("Various CRC32 calculations");
MODULE_LICENSE("GPL");
#if CRC_LE_BITS > 8 || CRC_BE_BITS > 8
/* implements slicing-by-4 or slicing-by-8 algorithm */
static inline u32 __pure
crc32_body(u32 crc, unsigned char const *buf, size_t len, const u32 (*tab)[256])
{
# ifdef __LITTLE_ENDIAN
# define DO_CRC(x) crc = t0[(crc ^ (x)) & 255] ^ (crc >> 8)
# define DO_CRC4 (t3[(q) & 255] ^ t2[(q >> 8) & 255] ^ \
t1[(q >> 16) & 255] ^ t0[(q >> 24) & 255])
# define DO_CRC8 (t7[(q) & 255] ^ t6[(q >> 8) & 255] ^ \
t5[(q >> 16) & 255] ^ t4[(q >> 24) & 255])
# else
# define DO_CRC(x) crc = t0[((crc >> 24) ^ (x)) & 255] ^ (crc << 8)
# define DO_CRC4 (t0[(q) & 255] ^ t1[(q >> 8) & 255] ^ \
t2[(q >> 16) & 255] ^ t3[(q >> 24) & 255])
# define DO_CRC8 (t4[(q) & 255] ^ t5[(q >> 8) & 255] ^ \
t6[(q >> 16) & 255] ^ t7[(q >> 24) & 255])
# endif
const u32 *b;
size_t rem_len;
# ifdef CONFIG_X86
size_t i;
# endif
const u32 *t0=tab[0], *t1=tab[1], *t2=tab[2], *t3=tab[3];
# if CRC_LE_BITS != 32
const u32 *t4 = tab[4], *t5 = tab[5], *t6 = tab[6], *t7 = tab[7];
# endif
u32 q;
/* Align it */
if (unlikely((long)buf & 3 && len)) {
do {
DO_CRC(*buf++);
} while ((--len) && ((long)buf)&3);
}
# if CRC_LE_BITS == 32
rem_len = len & 3;
len = len >> 2;
# else
rem_len = len & 7;
len = len >> 3;
# endif
b = (const u32 *)buf;
# ifdef CONFIG_X86
--b;
for (i = 0; i < len; i++) {
# else
for (--b; len; --len) {
# endif
q = crc ^ *++b; /* use pre increment for speed */
# if CRC_LE_BITS == 32
crc = DO_CRC4;
# else
crc = DO_CRC8;
q = *++b;
crc ^= DO_CRC4;
# endif
}
len = rem_len;
/* And the last few bytes */
if (len) {
u8 *p = (u8 *)(b + 1) - 1;
# ifdef CONFIG_X86
for (i = 0; i < len; i++)
DO_CRC(*++p); /* use pre increment for speed */
# else
do {
DO_CRC(*++p); /* use pre increment for speed */
} while (--len);
# endif
}
return crc;
#undef DO_CRC
#undef DO_CRC4
#undef DO_CRC8
}
#endif
/**
* crc32_le_generic() - Calculate bitwise little-endian Ethernet AUTODIN II
* CRC32/CRC32C
* @crc: seed value for computation. ~0 for Ethernet, sometimes 0 for other
* uses, or the previous crc32/crc32c value if computing incrementally.
* @p: pointer to buffer over which CRC32/CRC32C is run
* @len: length of buffer @p
* @tab: little-endian Ethernet table
* @polynomial: CRC32/CRC32c LE polynomial
*/
static inline u32 __pure crc32_le_generic(u32 crc, unsigned char const *p,
size_t len, const u32 (*tab)[256],
u32 polynomial)
{
#if CRC_LE_BITS == 1
int i;
while (len--) {
crc ^= *p++;
for (i = 0; i < 8; i++)
crc = (crc >> 1) ^ ((crc & 1) ? polynomial : 0);
}
# elif CRC_LE_BITS == 2
while (len--) {
crc ^= *p++;
crc = (crc >> 2) ^ tab[0][crc & 3];
crc = (crc >> 2) ^ tab[0][crc & 3];
crc = (crc >> 2) ^ tab[0][crc & 3];
crc = (crc >> 2) ^ tab[0][crc & 3];
}
# elif CRC_LE_BITS == 4
while (len--) {
crc ^= *p++;
crc = (crc >> 4) ^ tab[0][crc & 15];
crc = (crc >> 4) ^ tab[0][crc & 15];
}
# elif CRC_LE_BITS == 8
/* aka Sarwate algorithm */
while (len--) {
crc ^= *p++;
crc = (crc >> 8) ^ tab[0][crc & 255];
}
# else
crc = (__force u32) __cpu_to_le32(crc);
crc = crc32_body(crc, p, len, tab);
crc = __le32_to_cpu((__force __le32)crc);
#endif
return crc;
}
#if CRC_LE_BITS == 1
u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)
{
return crc32_le_generic(crc, p, len, NULL, CRCPOLY_LE);
}
u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len)
{
return crc32_le_generic(crc, p, len, NULL, CRC32C_POLY_LE);
}
#else
u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)
{
return crc32_le_generic(crc, p, len,
(const u32 (*)[256])crc32table_le, CRCPOLY_LE);
}
u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len)
{
return crc32_le_generic(crc, p, len,
(const u32 (*)[256])crc32ctable_le, CRC32C_POLY_LE);
}
#endif
EXPORT_SYMBOL(crc32_le);
EXPORT_SYMBOL(__crc32c_le);
/*
* This multiplies the polynomials x and y modulo the given modulus.
* This follows the "little-endian" CRC convention that the lsbit
* represents the highest power of x, and the msbit represents x^0.
*/
static u32 __attribute_const__ gf2_multiply(u32 x, u32 y, u32 modulus)
{
u32 product = x & 1 ? y : 0;
int i;
for (i = 0; i < 31; i++) {
product = (product >> 1) ^ (product & 1 ? modulus : 0);
x >>= 1;
product ^= x & 1 ? y : 0;
}
return product;
}
/**
* crc32_generic_shift - Append len 0 bytes to crc, in logarithmic time
* @crc: The original little-endian CRC (i.e. lsbit is x^31 coefficient)
* @len: The number of bytes. @crc is multiplied by x^(8*@len)
* @polynomial: The modulus used to reduce the result to 32 bits.
*
* It's possible to parallelize CRC computations by computing a CRC
* over separate ranges of a buffer, then summing them.
* This shifts the given CRC by 8*len bits (i.e. produces the same effect
* as appending len bytes of zero to the data), in time proportional
* to log(len).
*/
static u32 __attribute_const__ crc32_generic_shift(u32 crc, size_t len,
u32 polynomial)
{
u32 power = polynomial; /* CRC of x^32 */
int i;
/* Shift up to 32 bits in the simple linear way */
for (i = 0; i < 8 * (int)(len & 3); i++)
crc = (crc >> 1) ^ (crc & 1 ? polynomial : 0);
len >>= 2;
if (!len)
return crc;
for (;;) {
/* "power" is x^(2^i), modulo the polynomial */
if (len & 1)
crc = gf2_multiply(crc, power, polynomial);
len >>= 1;
if (!len)
break;
/* Square power, advancing to x^(2^(i+1)) */
power = gf2_multiply(power, power, polynomial);
}
return crc;
}
u32 __attribute_const__ crc32_le_shift(u32 crc, size_t len)
{
return crc32_generic_shift(crc, len, CRCPOLY_LE);
}
u32 __attribute_const__ __crc32c_le_shift(u32 crc, size_t len)
{
return crc32_generic_shift(crc, len, CRC32C_POLY_LE);
}
EXPORT_SYMBOL(crc32_le_shift);
EXPORT_SYMBOL(__crc32c_le_shift);
/**
* crc32_be_generic() - Calculate bitwise big-endian Ethernet AUTODIN II CRC32
* @crc: seed value for computation. ~0 for Ethernet, sometimes 0 for
* other uses, or the previous crc32 value if computing incrementally.
* @p: pointer to buffer over which CRC32 is run
* @len: length of buffer @p
* @tab: big-endian Ethernet table
* @polynomial: CRC32 BE polynomial
*/
static inline u32 __pure crc32_be_generic(u32 crc, unsigned char const *p,
size_t len, const u32 (*tab)[256],
u32 polynomial)
{
#if CRC_BE_BITS == 1
int i;
while (len--) {
crc ^= *p++ << 24;
for (i = 0; i < 8; i++)
crc =
(crc << 1) ^ ((crc & 0x80000000) ? polynomial :
0);
}
# elif CRC_BE_BITS == 2
while (len--) {
crc ^= *p++ << 24;
crc = (crc << 2) ^ tab[0][crc >> 30];
crc = (crc << 2) ^ tab[0][crc >> 30];
crc = (crc << 2) ^ tab[0][crc >> 30];
crc = (crc << 2) ^ tab[0][crc >> 30];
}
# elif CRC_BE_BITS == 4
while (len--) {
crc ^= *p++ << 24;
crc = (crc << 4) ^ tab[0][crc >> 28];
crc = (crc << 4) ^ tab[0][crc >> 28];
}
# elif CRC_BE_BITS == 8
while (len--) {
crc ^= *p++ << 24;
crc = (crc << 8) ^ tab[0][crc >> 24];
}
# else
crc = (__force u32) __cpu_to_be32(crc);
crc = crc32_body(crc, p, len, tab);
crc = __be32_to_cpu((__force __be32)crc);
# endif
return crc;
}
#if CRC_LE_BITS == 1
u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
{
return crc32_be_generic(crc, p, len, NULL, CRCPOLY_BE);
}
#else
u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
{
return crc32_be_generic(crc, p, len,
(const u32 (*)[256])crc32table_be, CRCPOLY_BE);
}
#endif
EXPORT_SYMBOL(crc32_be);
#ifdef CONFIG_CRC32_SELFTEST
/* 4096 random bytes */
static u8 const __aligned(8) test_buf[] __initconst =
{
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,
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0xae, 0xab, 0x74, 0x96, 0x32, 0xc7, 0x4c, 0x56,
0x3c, 0x89, 0x0f, 0x96, 0x0b, 0x42, 0xc0, 0xcb,
0xee, 0x0f, 0x0b, 0x8c, 0xfb, 0x7e, 0x47, 0x7b,
0x64, 0x48, 0xfd, 0xb2, 0x00, 0x80, 0x89, 0xa5,
0x13, 0x55, 0x62, 0xfc, 0x8f, 0xe2, 0x42, 0x03,
0xb7, 0x4e, 0x2a, 0x79, 0xb4, 0x82, 0xea, 0x23,
0x49, 0xda, 0xaf, 0x52, 0x63, 0x1e, 0x60, 0x03,
0x89, 0x06, 0x44, 0x46, 0x08, 0xc3, 0xc4, 0x87,
0x70, 0x2e, 0xda, 0x94, 0xad, 0x6b, 0xe0, 0xe4,
0xd1, 0x8a, 0x06, 0xc2, 0xa8, 0xc0, 0xa7, 0x43,
0x3c, 0x47, 0x52, 0x0e, 0xc3, 0x77, 0x81, 0x11,
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 {
u32 crc; /* random starting crc */
u32 start; /* random 6 bit offset in buf */
u32 length; /* random 11 bit length of test */
u32 crc_le; /* expected crc32_le result */
u32 crc_be; /* expected crc32_be result */
u32 crc32c_le; /* expected crc32c_le result */
} const test[] __initconst =
{
{0x674bf11d, 0x00000038, 0x00000542, 0x0af6d466, 0xd8b6e4c1, 0xf6e93d6c},
{0x35c672c6, 0x0000003a, 0x000001aa, 0xc6d3dfba, 0x28aaf3ad, 0x0fe92aca},
{0x496da28e, 0x00000039, 0x000005af, 0xd933660f, 0x5d57e81f, 0x52e1ebb8},
{0x09a9b90e, 0x00000027, 0x000001f8, 0xb45fe007, 0xf45fca9a, 0x0798af9a},
{0xdc97e5a9, 0x00000025, 0x000003b6, 0xf81a3562, 0xe0126ba2, 0x18eb3152},
{0x47c58900, 0x0000000a, 0x000000b9, 0x8e58eccf, 0xf3afc793, 0xd00d08c7},
{0x292561e8, 0x0000000c, 0x00000403, 0xa2ba8aaf, 0x0b797aed, 0x8ba966bc},
{0x415037f6, 0x00000003, 0x00000676, 0xa17d52e8, 0x7f0fdf35, 0x11d694a2},
{0x3466e707, 0x00000026, 0x00000042, 0x258319be, 0x75c484a2, 0x6ab3208d},
{0xafd1281b, 0x00000023, 0x000002ee, 0x4428eaf8, 0x06c7ad10, 0xba4603c5},
{0xd3857b18, 0x00000028, 0x000004a2, 0x5c430821, 0xb062b7cb, 0xe6071c6f},
{0x1d825a8f, 0x0000002b, 0x0000050b, 0xd2c45f0c, 0xd68634e0, 0x179ec30a},
{0x5033e3bc, 0x0000000b, 0x00000078, 0xa3ea4113, 0xac6d31fb, 0x0903beb8},
{0x94f1fb5e, 0x0000000f, 0x000003a2, 0xfbfc50b1, 0x3cfe50ed, 0x6a7cb4fa},
{0xc9a0fe14, 0x00000009, 0x00000473, 0x5fb61894, 0x87070591, 0xdb535801},
{0x88a034b1, 0x0000001c, 0x000005ad, 0xc1b16053, 0x46f95c67, 0x92bed597},
{0xf0f72239, 0x00000020, 0x0000026d, 0xa6fa58f3, 0xf8c2c1dd, 0x192a3f1b},
{0xcc20a5e3, 0x0000003b, 0x0000067a, 0x7740185a, 0x308b979a, 0xccbaec1a},
{0xce589c95, 0x0000002b, 0x00000641, 0xd055e987, 0x40aae25b, 0x7eabae4d},
{0x78edc885, 0x00000035, 0x000005be, 0xa39cb14b, 0x035b0d1f, 0x28c72982},
{0x9d40a377, 0x0000003b, 0x00000038, 0x1f47ccd2, 0x197fbc9d, 0xc3cd4d18},
{0x703d0e01, 0x0000003c, 0x000006f1, 0x88735e7c, 0xfed57c5a, 0xbca8f0e7},
{0x776bf505, 0x0000000f, 0x000005b2, 0x5cc4fc01, 0xf32efb97, 0x713f60b3},
{0x4a3e7854, 0x00000027, 0x000004b8, 0x8d923c82, 0x0cbfb4a2, 0xebd08fd5},
{0x209172dd, 0x0000003b, 0x00000356, 0xb89e9c2b, 0xd7868138, 0x64406c59},
{0x3ba4cc5b, 0x0000002f, 0x00000203, 0xe51601a9, 0x5b2a1032, 0x7421890e},
{0xfc62f297, 0x00000000, 0x00000079, 0x71a8e1a2, 0x5d88685f, 0xe9347603},
{0x64280b8b, 0x00000016, 0x000007ab, 0x0fa7a30c, 0xda3a455f, 0x1bef9060},
{0x97dd724b, 0x00000033, 0x000007ad, 0x5788b2f4, 0xd7326d32, 0x34720072},
{0x61394b52, 0x00000035, 0x00000571, 0xc66525f1, 0xcabe7fef, 0x48310f59},
{0x29b4faff, 0x00000024, 0x0000006e, 0xca13751e, 0x993648e0, 0x783a4213},
{0x29bfb1dc, 0x0000000b, 0x00000244, 0x436c43f7, 0x429f7a59, 0x9e8efd41},
{0x86ae934b, 0x00000035, 0x00000104, 0x0760ec93, 0x9cf7d0f4, 0xfc3d34a5},
{0xc4c1024e, 0x0000002e, 0x000006b1, 0x6516a3ec, 0x19321f9c, 0x17a52ae2},
{0x3287a80a, 0x00000026, 0x00000496, 0x0b257eb1, 0x754ebd51, 0x886d935a},
{0xa4db423e, 0x00000023, 0x0000045d, 0x9b3a66dc, 0x873e9f11, 0xeaaeaeb2},
{0x7a1078df, 0x00000015, 0x0000014a, 0x8c2484c5, 0x6a628659, 0x8e900a4b},
{0x6048bd5b, 0x00000006, 0x0000006a, 0x897e3559, 0xac9961af, 0xd74662b1},
{0xd8f9ea20, 0x0000003d, 0x00000277, 0x60eb905b, 0xed2aaf99, 0xd26752ba},
{0xea5ec3b4, 0x0000002a, 0x000004fe, 0x869965dc, 0x6c1f833b, 0x8b1fcd62},
{0x2dfb005d, 0x00000016, 0x00000345, 0x6a3b117e, 0xf05e8521, 0xf54342fe},
{0x5a214ade, 0x00000020, 0x000005b6, 0x467f70be, 0xcb22ccd3, 0x5b95b988},
{0xf0ab9cca, 0x00000032, 0x00000515, 0xed223df3, 0x7f3ef01d, 0x2e1176be},
{0x91b444f9, 0x0000002e, 0x000007f8, 0x84e9a983, 0x5676756f, 0x66120546},
{0x1b5d2ddb, 0x0000002e, 0x0000012c, 0xba638c4c, 0x3f42047b, 0xf256a5cc},
{0xd824d1bb, 0x0000003a, 0x000007b5, 0x6288653b, 0x3a3ebea0, 0x4af1dd69},
{0x0470180c, 0x00000034, 0x000001f0, 0x9d5b80d6, 0x3de08195, 0x56f0a04a},
{0xffaa3a3f, 0x00000036, 0x00000299, 0xf3a82ab8, 0x53e0c13d, 0x74f6b6b2},
{0x6406cfeb, 0x00000023, 0x00000600, 0xa920b8e8, 0xe4e2acf4, 0x085951fd},
{0xb24aaa38, 0x0000003e, 0x000004a1, 0x657cc328, 0x5077b2c3, 0xc65387eb},
{0x58b2ab7c, 0x00000039, 0x000002b4, 0x3a17ee7e, 0x9dcb3643, 0x1ca9257b},
{0x3db85970, 0x00000006, 0x000002b6, 0x95268b59, 0xb9812c10, 0xfd196d76},
{0x857830c5, 0x00000003, 0x00000590, 0x4ef439d5, 0xf042161d, 0x5ef88339},
{0xe1fcd978, 0x0000003e, 0x000007d8, 0xae8d8699, 0xce0a1ef5, 0x2c3714d9},
{0xb982a768, 0x00000016, 0x000006e0, 0x62fad3df, 0x5f8a067b, 0x58576548},
{0x1d581ce8, 0x0000001e, 0x0000058b, 0xf0f5da53, 0x26e39eee, 0xfd7c57de},
{0x2456719b, 0x00000025, 0x00000503, 0x4296ac64, 0xd50e4c14, 0xd5fedd59},
{0xfae6d8f2, 0x00000000, 0x0000055d, 0x057fdf2e, 0x2a31391a, 0x1cc3b17b},
{0xcba828e3, 0x00000039, 0x000002ce, 0xe3f22351, 0x8f00877b, 0x270eed73},
{0x13d25952, 0x0000000a, 0x0000072d, 0x76d4b4cc, 0x5eb67ec3, 0x91ecbb11},
{0x0342be3f, 0x00000015, 0x00000599, 0xec75d9f1, 0x9d4d2826, 0x05ed8d0c},
{0xeaa344e0, 0x00000014, 0x000004d8, 0x72a4c981, 0x2064ea06, 0x0b09ad5b},
{0xbbb52021, 0x0000003b, 0x00000272, 0x04af99fc, 0xaf042d35, 0xf8d511fb},
{0xb66384dc, 0x0000001d, 0x000007fc, 0xd7629116, 0x782bd801, 0x5ad832cc},
{0x616c01b6, 0x00000022, 0x000002c8, 0x5b1dab30, 0x783ce7d2, 0x1214d196},
{0xce2bdaad, 0x00000016, 0x0000062a, 0x932535c8, 0x3f02926d, 0x5747218a},
{0x00fe84d7, 0x00000005, 0x00000205, 0x850e50aa, 0x753d649c, 0xde8f14de},
{0xbebdcb4c, 0x00000006, 0x0000055d, 0xbeaa37a2, 0x2d8c9eba, 0x3563b7b9},
{0xd8b1a02a, 0x00000010, 0x00000387, 0x5017d2fc, 0x503541a5, 0x071475d0},
{0x3b96cad2, 0x00000036, 0x00000347, 0x1d2372ae, 0x926cd90b, 0x54c79d60},
{0xc94c1ed7, 0x00000005, 0x0000038b, 0x9e9fdb22, 0x144a9178, 0x4c53eee6},
{0x1aad454e, 0x00000025, 0x000002b2, 0xc3f6315c, 0x5c7a35b3, 0x10137a3c},
{0xa4fec9a6, 0x00000000, 0x000006d6, 0x90be5080, 0xa4107605, 0xaa9d6c73},
{0x1bbe71e2, 0x0000001f, 0x000002fd, 0x4e504c3b, 0x284ccaf1, 0xb63d23e7},
{0x4201c7e4, 0x00000002, 0x000002b7, 0x7822e3f9, 0x0cc912a9, 0x7f53e9cf},
{0x23fddc96, 0x00000003, 0x00000627, 0x8a385125, 0x07767e78, 0x13c1cd83},
{0xd82ba25c, 0x00000016, 0x0000063e, 0x98e4148a, 0x283330c9, 0x49ff5867},
{0x786f2032, 0x0000002d, 0x0000060f, 0xf201600a, 0xf561bfcd, 0x8467f211},
{0xfebe4e1f, 0x0000002a, 0x000004f2, 0x95e51961, 0xfd80dcab, 0x3f9683b2},
{0x1a6e0a39, 0x00000008, 0x00000672, 0x8af6c2a5, 0x78dd84cb, 0x76a3f874},
{0x56000ab8, 0x0000000e, 0x000000e5, 0x36bacb8f, 0x22ee1f77, 0x863b702f},
{0x4717fe0c, 0x00000000, 0x000006ec, 0x8439f342, 0x5c8e03da, 0xdc6c58ff},
{0xd5d5d68e, 0x0000003c, 0x000003a3, 0x46fff083, 0x177d1b39, 0x0622cc95},
{0xc25dd6c6, 0x00000024, 0x000006c0, 0x5ceb8eb4, 0x892b0d16, 0xe85605cd},
{0xe9b11300, 0x00000023, 0x00000683, 0x07a5d59a, 0x6c6a3208, 0x31da5f06},
{0x95cd285e, 0x00000001, 0x00000047, 0x7b3a4368, 0x0202c07e, 0xa1f2e784},
{0xd9245a25, 0x0000001e, 0x000003a6, 0xd33c1841, 0x1936c0d5, 0xb07cc616},
{0x103279db, 0x00000006, 0x0000039b, 0xca09b8a0, 0x77d62892, 0xbf943b6c},
{0x1cba3172, 0x00000027, 0x000001c8, 0xcb377194, 0xebe682db, 0x2c01af1c},
{0x8f613739, 0x0000000c, 0x000001df, 0xb4b0bc87, 0x7710bd43, 0x0fe5f56d},
{0x1c6aa90d, 0x0000001b, 0x0000053c, 0x70559245, 0xda7894ac, 0xf8943b2d},
{0xaabe5b93, 0x0000003d, 0x00000715, 0xcdbf42fa, 0x0c3b99e7, 0xe4d89272},
{0xf15dd038, 0x00000006, 0x000006db, 0x6e104aea, 0x8d5967f2, 0x7c2f6bbb},
{0x584dd49c, 0x00000020, 0x000007bc, 0x36b6cfd6, 0xad4e23b2, 0xabbf388b},
{0x5d8c9506, 0x00000020, 0x00000470, 0x4c62378e, 0x31d92640, 0x1dca1f4e},
{0xb80d17b0, 0x00000032, 0x00000346, 0x22a5bb88, 0x9a7ec89f, 0x5c170e23},
{0xdaf0592e, 0x00000023, 0x000007b0, 0x3cab3f99, 0x9b1fdd99, 0xc0e9d672},
{0x4793cc85, 0x0000000d, 0x00000706, 0xe82e04f6, 0xed3db6b7, 0xc18bdc86},
{0x82ebf64e, 0x00000009, 0x000007c3, 0x69d590a9, 0x9efa8499, 0xa874fcdd},
{0xb18a0319, 0x00000026, 0x000007db, 0x1cf98dcc, 0x8fa9ad6a, 0x9dc0bb48},
};
#include <linux/time.h>
static int __init crc32c_test(void)
{
int i;
int errors = 0;
int bytes = 0;
struct timespec start, stop;
u64 nsec;
unsigned long flags;
/* keep static to prevent cache warming code from
* getting eliminated by the compiler */
static u32 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);
}
/* reduce OS noise */
local_irq_save(flags);
local_irq_disable();
getnstimeofday(&start);
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++;
}
getnstimeofday(&stop);
local_irq_restore(flags);
local_irq_enable();
nsec = stop.tv_nsec - start.tv_nsec +
1000000000 * (stop.tv_sec - start.tv_sec);
pr_info("crc32c: CRC_LE_BITS = %d\n", CRC_LE_BITS);
if (errors)
pr_warn("crc32c: %d self tests failed\n", errors);
else {
pr_info("crc32c: self tests passed, processed %d bytes in %lld nsec\n",
bytes, nsec);
}
return 0;
}
static int __init crc32c_combine_test(void)
{
int i, j;
int errors = 0, runs = 0;
for (i = 0; i < 10; i++) {
u32 crc_full;
crc_full = __crc32c_le(test[i].crc, test_buf + test[i].start,
test[i].length);
for (j = 0; j <= test[i].length; ++j) {
u32 crc1, crc2;
u32 len1 = j, len2 = test[i].length - j;
crc1 = __crc32c_le(test[i].crc, test_buf +
test[i].start, len1);
crc2 = __crc32c_le(0, test_buf + test[i].start +
len1, len2);
if (!(crc_full == __crc32c_le_combine(crc1, crc2, len2) &&
crc_full == test[i].crc32c_le))
errors++;
runs++;
cond_resched();
}
}
if (errors)
pr_warn("crc32c_combine: %d/%d self tests failed\n", errors, runs);
else
pr_info("crc32c_combine: %d self tests passed\n", runs);
return 0;
}
static int __init crc32_test(void)
{
int i;
int errors = 0;
int bytes = 0;
struct timespec start, stop;
u64 nsec;
unsigned long flags;
/* keep static to prevent cache warming code from
* getting eliminated by the compiler */
static u32 crc;
/* pre-warm the cache */
for (i = 0; i < 100; i++) {
bytes += 2*test[i].length;
crc ^= crc32_le(test[i].crc, test_buf +
test[i].start, test[i].length);
crc ^= crc32_be(test[i].crc, test_buf +
test[i].start, test[i].length);
}
/* reduce OS noise */
local_irq_save(flags);
local_irq_disable();
getnstimeofday(&start);
for (i = 0; i < 100; i++) {
if (test[i].crc_le != crc32_le(test[i].crc, test_buf +
test[i].start, test[i].length))
errors++;
if (test[i].crc_be != crc32_be(test[i].crc, test_buf +
test[i].start, test[i].length))
errors++;
}
getnstimeofday(&stop);
local_irq_restore(flags);
local_irq_enable();
nsec = stop.tv_nsec - start.tv_nsec +
1000000000 * (stop.tv_sec - start.tv_sec);
pr_info("crc32: CRC_LE_BITS = %d, CRC_BE BITS = %d\n",
CRC_LE_BITS, CRC_BE_BITS);
if (errors)
pr_warn("crc32: %d self tests failed\n", errors);
else {
pr_info("crc32: self tests passed, processed %d bytes in %lld nsec\n",
bytes, nsec);
}
return 0;
}
static int __init crc32_combine_test(void)
{
int i, j;
int errors = 0, runs = 0;
for (i = 0; i < 10; i++) {
u32 crc_full;
crc_full = crc32_le(test[i].crc, test_buf + test[i].start,
test[i].length);
for (j = 0; j <= test[i].length; ++j) {
u32 crc1, crc2;
u32 len1 = j, len2 = test[i].length - j;
crc1 = crc32_le(test[i].crc, test_buf +
test[i].start, len1);
crc2 = crc32_le(0, test_buf + test[i].start +
len1, len2);
if (!(crc_full == crc32_le_combine(crc1, crc2, len2) &&
crc_full == test[i].crc_le))
errors++;
runs++;
cond_resched();
}
}
if (errors)
pr_warn("crc32_combine: %d/%d self tests failed\n", errors, runs);
else
pr_info("crc32_combine: %d self tests passed\n", runs);
return 0;
}
static int __init crc32test_init(void)
{
crc32_test();
crc32c_test();
crc32_combine_test();
crc32c_combine_test();
return 0;
}
static void __exit crc32_exit(void)
{
}
module_init(crc32test_init);
module_exit(crc32_exit);
#endif /* CONFIG_CRC32_SELFTEST */
Computing file changes ...
