Patchwork [3/3] crc32c: Implement a self-test for CRC32c

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Submitter Darrick J. Wong
Date Sept. 1, 2011, 12:33 a.m.
Message ID <>
Download mbox | patch
Permalink /patch/112744/
State Superseded
Headers show


Darrick J. Wong - Sept. 1, 2011, 12:33 a.m.
This is a loadable module that will self-test the CRC32c code.

Signed-off-by: Darrick J. Wong <>
 lib/Kconfig          |    7 +
 lib/Makefile         |    1 
 lib/libcrc32c_test.c |  694 ++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 702 insertions(+), 0 deletions(-)
 create mode 100644 lib/libcrc32c_test.c

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Herbert Xu - Sept. 1, 2011, 1:07 a.m.
On Wed, Aug 31, 2011 at 05:33:36PM -0700, Darrick J. Wong wrote:
> This is a loadable module that will self-test the CRC32c code.
> Signed-off-by: Darrick J. Wong <>

Please use the existing crypto testing framework.

Bob Pearson - Sept. 1, 2011, 1:20 a.m.
Could you elaborate a little on this?

> -----Original Message-----
> From: Herbert Xu []
> Sent: Wednesday, August 31, 2011 8:08 PM
> To: Darrick J. Wong
> Cc: Andreas Dilger; Theodore Tso; David Miller; Bob Pearson; linux-kernel;
> Mingming Cao; linux-crypto; linux-fsdevel;
> Subject: Re: [PATCH 3/3] crc32c: Implement a self-test for CRC32c
> On Wed, Aug 31, 2011 at 05:33:36PM -0700, Darrick J. Wong wrote:
> > This is a loadable module that will self-test the CRC32c code.
> >
> > Signed-off-by: Darrick J. Wong <>
> Please use the existing crypto testing framework.
> Thanks,
> --
> Email: Herbert Xu <>
> Home Page:
> PGP Key:

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Herbert Xu - Sept. 1, 2011, 1:51 a.m.
Bob Pearson <> wrote:
> Could you elaborate a little on this?

Sure, we already have a self-test infrastructure under crypto
in testmgr.*.  It even includes test vectors for crc32c.

Bob Pearson - Sept. 1, 2011, 5:40 a.m.
Hi Darrick,

The same code in crc32.c was helpful to measure performance and help code tuning as well as indicate correctness. Otherwise the code in crypto may be enough to test all the corner cases. If this survives the review I wonder if there is a way to combine crc32 and crc32c together somehow. I like yours because you can load/unload and not need the memory permanently.


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Herbert Xu - Sept. 1, 2011, 6:41 a.m.
On Thu, Sep 01, 2011 at 12:40:08AM -0500, Bob Pearson wrote:
> Hi Darrick,
> The same code in crc32.c was helpful to measure performance and help code tuning as well as indicate correctness. Otherwise the code in crypto may be enough to test all the corner cases. If this survives the review I wonder if there is a way to combine crc32 and crc32c together somehow. I like yours because you can load/unload and not need the memory permanently.

You can unload the crypto testmgr module too.

Darrick J. Wong - Sept. 1, 2011, 10:18 p.m.
On Thu, Sep 01, 2011 at 12:40:08AM -0500, Bob Pearson wrote:
> Hi Darrick,
> The same code in crc32.c was helpful to measure performance and help code
> tuning as well as indicate correctness. Otherwise the code in crypto may be
> enough to test all the corner cases. If this survives the review I wonder if
> there is a way to combine crc32 and crc32c together somehow. I like yours
> because you can load/unload and not need the memory permanently.

I suspect it would be pretty easy to adapt the Makefile to generate the
relevant .c and .h files; in particular it could be useful to use the crypto
framework for crc32 on the off chance anyone wants to provide hwaccel for that

That said, merging libcrc32c-test vectors with the existing one (sorry, I
didn't realize that existed) shouldn't be too difficult.

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Christoph Hellwig - Sept. 1, 2011, 10:24 p.m.
On Thu, Sep 01, 2011 at 03:18:54PM -0700, Darrick J. Wong wrote:
> I suspect it would be pretty easy to adapt the Makefile to generate the
> relevant .c and .h files; in particular it could be useful to use the crypto
> framework for crc32 on the off chance anyone wants to provide hwaccel for that
> too.

crc32 or crc32c?  Note that there already is a hardware optimized crc32c
for recent Intel CPUs in arch/x86/crypto/crc32c-intel.c.

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Darrick J. Wong - Sept. 1, 2011, 10:28 p.m.
On Thu, Sep 01, 2011 at 06:24:22PM -0400, Christoph Hellwig wrote:
> On Thu, Sep 01, 2011 at 03:18:54PM -0700, Darrick J. Wong wrote:
> > I suspect it would be pretty easy to adapt the Makefile to generate the
> > relevant .c and .h files; in particular it could be useful to use the crypto
> > framework for crc32 on the off chance anyone wants to provide hwaccel for that
> > too.
> crc32 or crc32c?  Note that there already is a hardware optimized crc32c
> for recent Intel CPUs in arch/x86/crypto/crc32c-intel.c.

crc32, since it currently doesn't use the crypto api at all, and Bob was
interested in implementing slice-by-8 for it.  Though I suppose so long as
there aren't any reasons to override the sw crc32 implementation we could just
fall back to Bob's earlier patch to implement slice-by-8 for crc32?

<shrug> I don't mind implementing faster crc32/crc32c.

(As far as crc32c goes, my motivation is to make sw crc32c faster for the cases
where you don't have Intel hw.)

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diff --git a/lib/Kconfig b/lib/Kconfig
index 6c695ff..2bfdde8 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -79,6 +79,13 @@  config LIBCRC32C
 	  require M here.  See Castagnoli93.
 	  Module will be libcrc32c.
+	tristate "CRC32c Self-Test"
+	depends on CRYPTO_CRC32C
+	help
+	  This is a testing module that ensure that a crc32c implementation
+	  is working correctly.
 config CRC8
 	tristate "CRC8 function"
diff --git a/lib/Makefile b/lib/Makefile
index 3f5bc6d..79ca5ed 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -61,6 +61,7 @@  obj-$(CONFIG_CRC_ITU_T)	+= crc-itu-t.o
 obj-$(CONFIG_CRC32)	+= crc32.o
 obj-$(CONFIG_CRC7)	+= crc7.o
 obj-$(CONFIG_LIBCRC32C)	+= libcrc32c.o
+obj-$(CONFIG_LIBCRC32C_SELFTEST) += libcrc32c_test.o
 obj-$(CONFIG_CRC8)	+= crc8.o
 obj-$(CONFIG_GENERIC_ALLOCATOR) += genalloc.o
diff --git a/lib/libcrc32c_test.c b/lib/libcrc32c_test.c
new file mode 100644
index 0000000..8b5c75f
--- /dev/null
+++ b/lib/libcrc32c_test.c
@@ -0,0 +1,694 @@ 
+ * libcrc32c_test.c: Test buffer and checksums for crc32c.
+ */
+#include <linux/module.h>
+#include <linux/crc32c.h>
+static u8 test_buf[] = {
+	0xd9, 0xd7, 0x6a, 0x13, 0x3a, 0xb1, 0x05, 0x48,
+	0xda, 0xad, 0x14, 0xbd, 0x03, 0x3a, 0x58, 0x5e,
+	0x6e, 0xd1, 0x56, 0xc9, 0x2e, 0xc4, 0xcb, 0x6b,
+	0xe8, 0x77, 0x52, 0x37, 0x4e, 0x0f, 0x55, 0xd2,
+	0x12, 0x65, 0x90, 0xc2, 0x41, 0x49, 0x81, 0x01,
+	0xf5, 0x01, 0xeb, 0x2d, 0x78, 0x74, 0x23, 0x5d,
+	0x84, 0x5c, 0x81, 0x92, 0x21, 0xe9, 0x8d, 0x1d,
+	0x89, 0xf2, 0x4a, 0xac, 0xdd, 0xf9, 0xaf, 0xee,
+	0x44, 0xe7, 0x6e, 0xed, 0xfb, 0xd8, 0x89, 0x0e,
+	0x96, 0x62, 0xcd, 0xa4, 0x4b, 0xa9, 0xe5, 0x45,
+	0xb1, 0x29, 0x9b, 0x0f, 0xfc, 0xbd, 0x83, 0xab,
+	0xa8, 0x54, 0x96, 0x44, 0x2c, 0x7f, 0xbb, 0xe7,
+	0x52, 0x29, 0x08, 0xee, 0x14, 0xc5, 0xc2, 0xec,
+	0x5a, 0xeb, 0x40, 0x40, 0xea, 0xd1, 0x3d, 0x15,
+	0x73, 0xaa, 0x8c, 0x73, 0xfc, 0xf2, 0x2b, 0x49,
+	0x0b, 0x13, 0x96, 0xd9, 0x8e, 0x4b, 0xbc, 0xe0,
+	0xf4, 0xd2, 0xe0, 0x2e, 0x7a, 0xf0, 0x5d, 0x1f,
+	0xd2, 0x92, 0x97, 0xe0, 0xaa, 0x59, 0xab, 0xc9,
+	0x5c, 0xa6, 0x51, 0x1a, 0xe3, 0xd6, 0x06, 0xb9,
+	0xae, 0xb8, 0x76, 0x36, 0x79, 0x37, 0x52, 0xf6,
+	0x34, 0xaf, 0x27, 0x19, 0xe1, 0xc0, 0x2b, 0xdd,
+	0x01, 0x15, 0xcd, 0xce, 0x44, 0xf6, 0x4c, 0x18,
+	0x92, 0x69, 0xbe, 0x8a, 0x76, 0x23, 0x52, 0x13,
+	0x3f, 0xf9, 0xe0, 0xf5, 0x06, 0x28, 0x7c, 0xc7,
+	0xf3, 0x42, 0x0f, 0xdd, 0x40, 0x33, 0xf7, 0x99,
+	0xe2, 0xad, 0x26, 0xd9, 0x53, 0x10, 0x72, 0x0c,
+	0x4e, 0x43, 0x4c, 0x61, 0xfe, 0xd9, 0xc1, 0x16,
+	0xa1, 0x93, 0xca, 0x3c, 0x75, 0x7f, 0x07, 0x7a,
+	0x65, 0xb3, 0x53, 0x2a, 0x52, 0x00, 0xa0, 0x62,
+	0xe0, 0xa3, 0x1f, 0xad, 0xd7, 0xbb, 0xc0, 0x83,
+	0x5d, 0x54, 0x87, 0x5f, 0xc8, 0x2f, 0xc8, 0xbf,
+	0x69, 0x04, 0x91, 0xc8, 0xa6, 0x1d, 0x4d, 0x46,
+	0x91, 0xfc, 0x26, 0xf4, 0x16, 0xd1, 0xa4, 0xbf,
+	0x5c, 0xa2, 0x6c, 0xdd, 0xb4, 0x40, 0xf2, 0x2e,
+	0xa2, 0xad, 0xf7, 0xf4, 0xa5, 0x8a, 0x3e, 0x23,
+	0x64, 0x08, 0xc8, 0xa1, 0xa0, 0xf0, 0x5d, 0x70,
+	0xd2, 0x77, 0xfd, 0xc8, 0x50, 0x83, 0x0f, 0xd6,
+	0x2b, 0xe4, 0x1f, 0x52, 0x34, 0x33, 0x68, 0xfd,
+	0x92, 0xbe, 0x9f, 0x97, 0x6b, 0x8d, 0x81, 0x91,
+	0x0f, 0xef, 0x65, 0xc8, 0x0d, 0x15, 0x01, 0x77,
+	0x58, 0xb2, 0xf4, 0x1b, 0x06, 0x7e, 0xf5, 0xca,
+	0x15, 0x2e, 0x38, 0xd8, 0x81, 0x1c, 0x1c, 0xa0,
+	0xb6, 0x13, 0x6a, 0x2b, 0x71, 0x34, 0x52, 0xd7,
+	0x1d, 0xbd, 0x37, 0x59, 0xbc, 0x86, 0x25, 0x2b,
+	0xa8, 0x93, 0xce, 0x1a, 0x03, 0x16, 0xfe, 0x01,
+	0x57, 0x99, 0x24, 0x25, 0x2c, 0xb3, 0xab, 0x1e,
+	0x2d, 0x65, 0x20, 0x89, 0x17, 0x02, 0x0e, 0x0a,
+	0xf5, 0x1e, 0xc7, 0xff, 0x1f, 0x61, 0xa9, 0x54,
+	0x18, 0xd4, 0xba, 0x50, 0x57, 0x02, 0xa1, 0xab,
+	0x22, 0x2e, 0x07, 0xea, 0xa9, 0xa3, 0x83, 0x4f,
+	0x27, 0xf5, 0xc5, 0xee, 0x3c, 0x3b, 0x10, 0xad,
+	0x32, 0x2b, 0x1c, 0x03, 0xcb, 0xaf, 0x98, 0x83,
+	0x54, 0xc3, 0x68, 0x63, 0xd4, 0xe0, 0x0e, 0x3c,
+	0x1a, 0x4e, 0xc0, 0x81, 0xd0, 0xe8, 0x6a, 0x62,
+	0x6b, 0x3e, 0x6f, 0xc4, 0xc6, 0x33, 0x4e, 0x26,
+	0x21, 0xf5, 0x04, 0xdf, 0xfa, 0xce, 0x45, 0xaf,
+	0xdc, 0x5e, 0x1b, 0xad, 0x93, 0xca, 0xf5, 0xcf,
+	0xd7, 0xee, 0x0c, 0x5c, 0x5e, 0xb4, 0xf0, 0x92,
+	0xd2, 0xf2, 0xf0, 0xa9, 0x1e, 0xab, 0x80, 0x68,
+	0x46, 0xef, 0xcc, 0x26, 0x0c, 0x5c, 0xdd, 0x4e,
+	0x83, 0xb8, 0xb9, 0x53, 0x6e, 0xf8, 0x93, 0x38,
+	0x67, 0xa4, 0x41, 0x87, 0x72, 0xe7, 0x7e, 0x86,
+	0xc9, 0x49, 0x00, 0x33, 0xb1, 0x38, 0x6c, 0x71,
+	0xd7, 0x1d, 0x8e, 0x61, 0x01, 0xb6, 0x57, 0xa9,
+	0xf1, 0xac, 0x15, 0xc2, 0x83, 0x77, 0xca, 0x64,
+	0xca, 0x7b, 0x6c, 0xa1, 0x10, 0x1b, 0x13, 0xd0,
+	0xd3, 0x9e, 0x9e, 0x10, 0x70, 0xc8, 0x1a, 0xbb,
+	0x3f, 0x19, 0x86, 0xab, 0x01, 0x0e, 0xea, 0x34,
+	0x22, 0xea, 0xe2, 0x15, 0xb7, 0xed, 0x21, 0x21,
+	0x75, 0xa5, 0xe7, 0x08, 0xa1, 0x38, 0xe0, 0x91,
+	0x05, 0x60, 0xea, 0xa7, 0x50, 0x27, 0x18, 0x07,
+	0x9d, 0xe0, 0x18, 0x2b, 0xd4, 0x07, 0x59, 0x00,
+	0xe6, 0x45, 0x18, 0x2a, 0x30, 0x6e, 0xf3, 0xb4,
+	0xd0, 0xef, 0xa6, 0x5b, 0x71, 0xa2, 0x5a, 0x3b,
+	0x89, 0x4c, 0xaf, 0x3f, 0xcb, 0x9f, 0x03, 0xfb,
+	0x43, 0x7c, 0x6b, 0xd3, 0x6a, 0xea, 0xce, 0x4a,
+	0x5f, 0x64, 0xb5, 0x62, 0xda, 0x5d, 0x27, 0xb7,
+	0xb8, 0x11, 0xca, 0x33, 0x30, 0xec, 0x70, 0xf0,
+	0x1b, 0x03, 0x50, 0xff, 0x5e, 0xa6, 0x08, 0xde,
+	0x37, 0x70, 0xc0, 0x81, 0x55, 0x60, 0x17, 0xa1,
+	0x85, 0xae, 0x26, 0x44, 0xe4, 0x67, 0x3c, 0x91,
+	0xfd, 0xc4, 0x3d, 0x97, 0x72, 0x23, 0xf3, 0x3c,
+	0x8f, 0xe0, 0xe2, 0xf2, 0x09, 0x96, 0x10, 0x67,
+	0xb5, 0xfe, 0xff, 0x3d, 0x4a, 0xc8, 0x62, 0x11,
+	0xa5, 0x98, 0xc1, 0x2d, 0x40, 0x82, 0x88, 0x8b,
+	0xe5, 0xb0, 0x75, 0xbf, 0x2f, 0xa8, 0x6a, 0x55,
+	0x49, 0x2e, 0x9c, 0x29, 0xd2, 0x7c, 0xbf, 0xf3,
+	0xaa, 0x3a, 0x16, 0x4a, 0xa4, 0x15, 0xf3, 0x48,
+	0xde, 0x38, 0x13, 0x44, 0x26, 0x02, 0xe6, 0xe9,
+	0xa8, 0x24, 0x89, 0xb5, 0x43, 0x95, 0xe4, 0x4c,
+	0xc3, 0xa0, 0xdf, 0xcc, 0x42, 0xf8, 0x8d, 0xb0,
+	0x3b, 0xea, 0x10, 0xb7, 0xe1, 0x40, 0x54, 0xb9,
+	0xa3, 0x2d, 0xfb, 0xb4, 0x91, 0xc0, 0x3e, 0x94,
+	0xf1, 0xa1, 0x3c, 0xbe, 0xef, 0xb8, 0x70, 0x55,
+	0x0a, 0x26, 0x93, 0xbf, 0xe6, 0x21, 0x92, 0x32,
+	0x3c, 0x39, 0x27, 0x6a, 0x23, 0x48, 0x02, 0x35,
+	0x3c, 0xd4, 0xcc, 0x04, 0xc0, 0x4e, 0xa7, 0x02,
+	0x63, 0x37, 0xc2, 0xb8, 0x56, 0x1d, 0x57, 0x57,
+	0x42, 0x04, 0x8d, 0xee, 0xcf, 0x8b, 0xc9, 0xc3,
+	0xba, 0x3b, 0x15, 0xd7, 0xaf, 0xbf, 0x9e, 0xcd,
+	0x44, 0xcf, 0xf0, 0x00, 0xb7, 0x3a, 0xfc, 0xa8,
+	0x12, 0xab, 0x3a, 0x62, 0x01, 0x21, 0x46, 0xe9,
+	0x1e, 0x48, 0x37, 0xfc, 0x13, 0x4d, 0xf6, 0x2a,
+	0x72, 0x40, 0x75, 0x38, 0x71, 0xf2, 0x17, 0x20,
+	0x2c, 0xdd, 0xc0, 0x49, 0xbc, 0x63, 0x33, 0xea,
+	0x06, 0x75, 0x41, 0xe7, 0x5c, 0x1f, 0xfb, 0xf9,
+	0x68, 0x83, 0xc2, 0x5a, 0x4a, 0x1e, 0x61, 0x08,
+	0x57, 0xf3, 0x00, 0xba, 0x77, 0x92, 0x63, 0xa5,
+	0xb7, 0xfe, 0x97, 0x22, 0xda, 0x5e, 0xd3, 0xaf,
+	0xbc, 0x89, 0x0d, 0x4c, 0x37, 0xa9, 0x27, 0x4a,
+	0x7f, 0xdb, 0x81, 0x39, 0x11, 0x86, 0x12, 0xf9,
+	0x10, 0x50, 0xe4, 0xdb, 0x72, 0xf9, 0xae, 0x10,
+	0x7c, 0xed, 0x50, 0x5c, 0x61, 0xeb, 0x42, 0x1e,
+	0xa4, 0xf4, 0xf0, 0xfa, 0x45, 0x4d, 0x95, 0x2b,
+	0xd4, 0x67, 0x4a, 0xe3, 0x8a, 0x15, 0x55, 0x92,
+	0x77, 0x64, 0x8c, 0x51, 0x38, 0xf9, 0x26, 0x3e,
+	0x68, 0xe2, 0xac, 0xbb, 0x64, 0x77, 0xe2, 0x82,
+	0xa4, 0x42, 0x41, 0x38, 0xa0, 0xf0, 0xc9, 0xd8,
+	0x6c, 0xe0, 0xef, 0x4c, 0xda, 0xb4, 0x92, 0xef,
+	0x1b, 0xe3, 0x9b, 0xc1, 0x44, 0x3c, 0xb9, 0xb7,
+	0x39, 0xac, 0x5c, 0x32, 0x39, 0xb4, 0x21, 0x85,
+	0x93, 0xbc, 0xf2, 0x51, 0x43, 0xb7, 0xae, 0x1e,
+	0x61, 0x9c, 0x38, 0x9c, 0xaa, 0xff, 0xde, 0xfc,
+	0xbf, 0x85, 0xef, 0x17, 0x34, 0x36, 0x71, 0x5f,
+	0x04, 0x16, 0xa6, 0x9e, 0xfd, 0x3a, 0x03, 0xd8,
+	0xbf, 0x71, 0x70, 0x20, 0x8f, 0x7c, 0xfb, 0xff,
+	0x61, 0xe0, 0xe2, 0x60, 0xa7, 0xb1, 0xc0, 0xe0,
+	0xd9, 0x3f, 0xdc, 0x8d, 0x4a, 0xa4, 0x52, 0x61,
+	0xaf, 0x9d, 0xdf, 0x8a, 0x0d, 0x41, 0xc0, 0x25,
+	0x68, 0x12, 0x7b, 0xd5, 0xc7, 0xdb, 0x68, 0x70,
+	0x2d, 0x7d, 0x95, 0x12, 0x03, 0x23, 0x0c, 0xe8,
+	0x14, 0x41, 0x11, 0x28, 0xec, 0x9d, 0xd3, 0x28,
+	0x77, 0x7a, 0x3c, 0x93, 0x8e, 0x5c, 0x7e, 0xb3,
+	0x42, 0x9a, 0x18, 0x25, 0x93, 0xc8, 0xea, 0x43,
+	0x1b, 0xbe, 0xd5, 0x27, 0xf1, 0xd4, 0xe0, 0x1e,
+	0xce, 0xc7, 0xc7, 0x2c, 0x25, 0x35, 0x58, 0xb8,
+	0x6c, 0xf3, 0xa2, 0xad, 0xe7, 0x58, 0x49, 0x47,
+	0xf7, 0xca, 0xde, 0x8b, 0x81, 0xb7, 0x75, 0xf4,
+	0x95, 0xa7, 0x5c, 0xc3, 0x2c, 0x0e, 0x1c, 0x52,
+	0x9a, 0xc3, 0x2a, 0x00, 0x21, 0xa7, 0x51, 0x6b,
+	0xf0, 0x05, 0x87, 0x8c, 0x42, 0x1b, 0xc3, 0x2e,
+	0xa3, 0x76, 0x22, 0xd5, 0x7f, 0x56, 0x10, 0xef,
+	0x98, 0x85, 0x65, 0x86, 0x71, 0x87, 0xd2, 0x8c,
+	0xc0, 0x47, 0x20, 0xe8, 0xb5, 0x1c, 0xe3, 0xdd,
+	0x3c, 0x5c, 0x03, 0xbb, 0x0e, 0x97, 0x3b, 0xe1,
+	0x56, 0x9a, 0xd5, 0x0a, 0x63, 0xd5, 0x33, 0xaf,
+	0x36, 0xca, 0xcf, 0x8f, 0x00, 0x28, 0xa3, 0x45,
+	0xb8, 0xcd, 0xde, 0x73, 0xd4, 0xfa, 0x2d, 0x6f,
+	0xdb, 0x93, 0xaa, 0xdd, 0x7f, 0xd2, 0x22, 0x9c,
+	0x96, 0x48, 0x1e, 0xa8, 0x63, 0xbe, 0xbc, 0x0d,
+	0x14, 0x3c, 0x2e, 0x11, 0x1f, 0xd2, 0xf4, 0x57,
+	0xb3, 0x47, 0xf8, 0xa6, 0x1b, 0xc3, 0xa7, 0x95,
+	0x2d, 0xd4, 0xca, 0xb8, 0x0d, 0xfb, 0x06, 0x85,
+	0xda, 0x63, 0xf0, 0x3e, 0x9d, 0x5e, 0xee, 0xce,
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+	0x1b, 0x3d, 0x46, 0x4d, 0xe4, 0x4c, 0xd6, 0xaf,
+	0x1a, 0x32, 0x12, 0x40, 0xb8, 0x84, 0x8e, 0xe4,
+	0x80, 0xce, 0x7e, 0xc1, 0x13, 0x8b, 0xb0, 0xb7,
+	0x6f, 0x24, 0xba, 0x85, 0x50, 0x83, 0xc3, 0xcf,
+	0x19, 0xb3, 0xf0, 0xc7, 0xee, 0x68, 0xbe, 0x9e,
+	0x6d, 0xb9, 0xfb, 0xd5, 0x29, 0xce, 0x82, 0xcd,
+	0x69, 0x16, 0x68, 0x6b, 0x6a, 0xf4, 0x02, 0x32,
+	0xce, 0x60, 0x37, 0x0c, 0xb9, 0x38, 0x92, 0x9c,
+	0x42, 0xa9, 0x0b, 0x53, 0x96, 0xfe, 0x39, 0xc1,
+	0x24, 0x65, 0x9b, 0xcd, 0xe7, 0x8d, 0x36, 0x07,
+	0x9f, 0x1d, 0x35, 0x8e, 0xdc, 0x4c, 0xb5, 0x68,
+	0xc5, 0xfd, 0x44, 0x19, 0xf2, 0x6c, 0x59, 0x1c,
+	0xb1, 0x0b, 0x35, 0x48, 0x86, 0x1a, 0x05, 0x22,
+	0x03, 0x0c, 0x0c, 0xa2, 0x92, 0x90, 0x35, 0xfb,
+	0x37, 0x94, 0xc7, 0x15, 0x84, 0xae, 0xe8, 0x05,
+	0xa0, 0xf7, 0x30, 0x11, 0x5c, 0xe4, 0x5d, 0x3e,
+	0x12, 0x54, 0x80, 0x54, 0x6b, 0x09, 0x8c, 0xce,
+	0x80, 0x5e, 0xa7, 0xc8, 0x6a, 0x0c, 0x56, 0xe1,
+	0x18, 0x7d, 0xc9, 0x39, 0xc1, 0xef, 0xe3, 0x25,
+	0xa0, 0x8b, 0x2f, 0x60, 0x3a, 0x43, 0x39, 0xa6,
+	0x28, 0x28, 0x7b, 0x4c, 0x77, 0xd4, 0x49, 0x61,
+	0x46, 0xe9, 0x1b, 0x45, 0xd6, 0xb1, 0x56, 0xe1,
+	0x7d, 0x34, 0xcd, 0x06, 0xb6, 0x67, 0x8d, 0x7d,
+	0x7a, 0xe2, 0xbe, 0x68, 0x35, 0xa6, 0x78, 0xe5,
+	0x47, 0x48, 0xb7, 0xc7, 0xde, 0xcd, 0xc9, 0x05,
+	0xb4, 0xe7, 0x50, 0x48, 0xe1, 0x4b, 0xfe, 0x76,
+	0x77, 0xc6, 0xf7, 0x5f, 0xcb, 0xc2, 0xa8, 0xd7,
+	0xd6, 0x8a, 0xe5, 0x49, 0xd9, 0xca, 0x45, 0xf4,
+	0xda, 0xcd, 0x33, 0xd1, 0x59, 0x2d, 0x9e, 0xc1,
+	0x5c, 0xe6, 0x01, 0x18, 0xb8, 0xf0, 0x5e, 0xb1,
+	0x69, 0x95, 0x2f, 0x02, 0x2a, 0xe7, 0x4a, 0xd7,
+	0xd1, 0xc3, 0xd5, 0x6f, 0x15, 0xc8, 0xdc, 0x29,
+	0xde, 0xb9, 0x3f, 0x8b, 0xa6, 0xbc, 0xdd, 0x25,
+	0x84, 0x35, 0x3c, 0x90, 0x2d, 0xc2, 0x1e, 0x98,
+	0x8a, 0x50, 0x09, 0x77, 0x42, 0xe9, 0x35, 0x8a,
+	0x7c, 0x97, 0xbf, 0xe8, 0xbf, 0x56, 0xd0, 0x8b,
+	0x65, 0xd3, 0xaf, 0x1e, 0x05, 0x94, 0xfa, 0xac,
+	0xa8, 0x2b, 0x28, 0xcb, 0x37, 0x3e, 0xe8, 0xbb,
+	0x66, 0x3a, 0xed, 0xb2, 0x48, 0x10, 0x0f, 0x3a,
+	0x5a, 0xc5, 0xdb, 0x26, 0x0e, 0xaa, 0x5e, 0x69,
+	0x15, 0xd6, 0x81, 0xae, 0xbd, 0xe6, 0x03, 0xf1,
+	0xf6, 0x37, 0xc8, 0xde, 0x70, 0x1f, 0x64, 0xb9,
+	0x5e, 0xbf, 0x2e, 0x4f, 0xb1, 0xea, 0xa0, 0x17,
+	0xe6, 0x7c, 0xf9, 0x2f, 0x1e, 0xd8, 0x58, 0xde,
+	0xa7, 0xf0, 0x46, 0x52, 0x95, 0xdf, 0xa4, 0x96,
+	0xd0, 0xc4, 0x97, 0x2b, 0x95, 0xcd, 0x5e, 0x40,
+	0x23, 0x5c, 0x10, 0xee, 0xba, 0x72, 0x9b, 0xcf,
+	0x0b, 0xe8, 0x18, 0x3a, 0x70, 0xd2, 0x5e, 0x07,
+	0x68, 0x93, 0xef, 0x4a, 0x5b, 0x8d, 0x72, 0x41,
+	0x4e, 0xea, 0x33, 0x6a, 0x0a, 0x5e, 0xfb, 0x02,
+	0x3f, 0xd4, 0xed, 0x5b, 0xe0, 0x42, 0x84, 0xd4,
+	0xaa, 0x85, 0xdc, 0x5b, 0x67, 0xee, 0x71, 0x67,
+	0xba, 0x8e, 0xd2, 0xbe, 0x61, 0xdf, 0x5a, 0x26,
+	0xb9, 0xf0, 0x77, 0x81, 0x53, 0x24, 0x16, 0xcb,
+	0x8c, 0xb8, 0x06, 0x6e, 0x68, 0xda, 0xc8, 0x2d,
+	0x17, 0x54, 0xdb, 0x46, 0xcb, 0xfd, 0x1f, 0x3d,
+	0x94, 0x81, 0x09, 0x4b, 0xfa, 0xb1, 0x46, 0xd9,
+	0x11, 0xa3, 0xb7, 0x31, 0x9c, 0xd2, 0x38, 0xd6,
+	0xba, 0x3d, 0xa3, 0x74, 0xd8, 0xf1, 0x24, 0xe8,
+	0x9c, 0xcb, 0x1d, 0xf9, 0x4a, 0xf7, 0xc8, 0x4b,
+	0xfe, 0x97, 0x7c, 0xa1, 0x02, 0xeb, 0x40, 0xc3,
+	0x89, 0x71, 0x01, 0xcd, 0x33, 0x2a, 0xc2, 0x82,
+	0xce, 0x62, 0x8d, 0x53, 0x7c, 0xdf, 0xce, 0xd7,
+	0xf5, 0xa8, 0x4f, 0xf2, 0xf2, 0x2e, 0xc1, 0xeb,
+	0x97, 0x99, 0x37, 0x3c, 0x53, 0xa6, 0xb4, 0x46,
+	0x05, 0x64, 0x92, 0x87, 0x08, 0x3c, 0x23, 0x4b,
+	0x9d, 0x67, 0x18, 0xf9, 0xe2, 0x0b, 0x1c, 0x39,
+	0xd3, 0x87, 0x70, 0xc0, 0xb9, 0x1e, 0x52, 0x0a,
+	0x0f, 0x48, 0xe2, 0xe7, 0x51, 0x72, 0x94, 0xf7,
+	0xa3, 0xdc, 0xe5, 0x66, 0x33, 0x39, 0x54, 0x06,
+	0x55, 0x93, 0x30, 0xf9, 0x5e, 0x76, 0x8f, 0xe0,
+	0x59, 0x4d, 0x0d, 0xa7, 0xf5, 0xbe, 0xdb, 0x20,
+	0xad, 0x0d, 0x76, 0x88, 0x5f, 0x9c, 0x7c, 0x75,
+	0x2f, 0x2a, 0x0b, 0x79, 0x6e, 0xd3, 0xe2, 0x66,
+	0xf5, 0x4a, 0x2d, 0x87, 0x87, 0x49, 0x84, 0x17,
+	0xa2, 0x62, 0x4c, 0xbb, 0xe4, 0x6e, 0x98, 0x10,
+	0xc9, 0xfb, 0x8a, 0x04, 0x68, 0x8d, 0x22, 0x66,
+	0xad, 0xea, 0x2a, 0xc9, 0x97, 0x2d, 0x3c, 0xbc,
+	0xd0, 0x77, 0x5f, 0xe6, 0xb8, 0x7f, 0xe6, 0xf6,
+	0x39, 0xbf, 0x56, 0x0e, 0x26, 0x6d, 0xc5, 0x3e,
+	0x53, 0x19, 0xd6, 0xb4, 0x57, 0x36, 0xa3, 0xc6,
+	0xd3, 0x3d, 0x66, 0x79, 0x30, 0x5c, 0x14, 0x0c,
+	0x0f, 0x3e, 0x96, 0xae, 0x90, 0x97, 0xab, 0x0d,
+	0x9f, 0xc3, 0xe7, 0x66, 0x3e, 0xe0, 0x31, 0x43,
+	0x4b, 0x01, 0xb3, 0x0e, 0x9e, 0x8c, 0x82, 0x4a,
+	0x8c, 0xc7, 0x79, 0x85, 0xdf, 0x75, 0x0d, 0xb4,
+	0x2b, 0x03, 0x14, 0xef, 0x72, 0x58, 0xfd, 0x64,
+	0xc8, 0xe3, 0x0d, 0x9a, 0x14, 0x6f, 0x76, 0xf9,
+	0x46, 0xd1, 0xd2, 0x81, 0xb3, 0x16, 0x6e, 0xc7,
+	0x76, 0x82, 0xce, 0xf4, 0xee, 0x33, 0x00, 0xe6,
+	0x77, 0xc4, 0xad, 0x4f, 0x06, 0xa7, 0x48, 0x80,
+	0x9e, 0x21, 0x66, 0xca, 0x75, 0x69, 0x57, 0xcb,
+	0xf0, 0x67, 0x6a, 0xaa, 0x8f, 0x88, 0x14, 0xbd,
+	0x65, 0x62, 0xe2, 0xad, 0xcc, 0x22, 0x88, 0x7b,
+	0x94, 0xbd, 0x0e, 0xcd, 0xb6, 0x69, 0xa2, 0xcb,
+	0x7d, 0x57, 0x5c, 0xb4, 0x92, 0x80, 0x13, 0x99,
+	0x84, 0xf3, 0x79, 0x0a, 0x2d, 0x70, 0xa4, 0xe0,
+	0xde, 0xc6, 0x32, 0xb0, 0x8a, 0x62, 0xb5, 0xcf,
+	0xfa, 0x5e, 0x5a, 0x92, 0x32, 0x7d, 0x34, 0x07,
+	0xb5, 0x52, 0x3a, 0xb5, 0x7d, 0x0f, 0xa1, 0xba,
+	0x56, 0xd0, 0x07, 0x76, 0x11, 0xf2, 0xc3, 0x33,
+	0x9d, 0xbd, 0x12, 0x35, 0x5e, 0xf7, 0x05, 0x88,
+	0x76, 0x94, 0xa6, 0xbf, 0xed, 0xb8, 0xa4, 0xa2,
+	0x0c, 0xbe, 0x0f, 0x6a, 0xaf, 0xf3, 0x1b, 0x33,
+	0x4a, 0xb7, 0x68, 0x3f, 0xbe, 0x95, 0x13, 0x97,
+	0x0f, 0x15, 0x17, 0x1b, 0x23, 0xaa, 0x08, 0x78,
+	0xa6, 0x5b, 0x08, 0xa2, 0x9d, 0x03, 0xa8, 0xa7,
+	0x39, 0xdc, 0xbc, 0x9a, 0x85, 0xf5, 0xe5, 0x55,
+	0x59, 0x3c, 0xef, 0xf9, 0x3f, 0x22, 0x8e, 0xf8,
+	0xd8, 0x3e, 0x02, 0x0b, 0xd8, 0x78, 0x4b, 0x15,
+	0x7f, 0xaa, 0x2c, 0xff, 0xbe, 0x77, 0x33, 0xc7,
+	0x6a, 0x12, 0xaa, 0xa4, 0xbe, 0xc0, 0x3b, 0xcb,
+	0x13, 0x9d, 0x9c, 0x5a, 0x9f, 0x8a, 0x57, 0x36,
+	0x4f, 0x02, 0x5a, 0xf8, 0x1d, 0x97, 0x77, 0x43,
+	0xc8, 0xa5, 0xb7, 0x9b, 0x10, 0x98, 0xfd, 0x58,
+	0xbf, 0x42, 0xf6, 0xbf, 0xff, 0x6c, 0x40, 0x18,
+	0x18, 0xdf, 0xac, 0x57, 0x71, 0xea, 0xcc, 0x8e,
+	0xfd, 0xfe, 0x10, 0xfb, 0xb9, 0xfe, 0xbc, 0x9a,
+	0x9c, 0x27, 0xe4, 0x10, 0x15, 0x94, 0x41, 0xa1,
+	0xcc, 0xf6, 0x25, 0x49, 0x4f, 0x96, 0xc1, 0x8c,
+	0x9e, 0x3e, 0x18, 0x29, 0x49, 0x92, 0xe7, 0xfe,
+	0x22, 0xff, 0xed, 0x02, 0x16, 0x90, 0xef, 0xac,
+	0xec, 0x95, 0x1d, 0x5b, 0x94, 0x9c, 0xf6, 0x7c,
+	0x1b, 0x5a, 0x9d, 0xb0, 0x9b, 0x05, 0x36, 0xbf,
+	0xef, 0xec, 0x63, 0x35, 0x40, 0x24, 0x45, 0x40,
+	0x30, 0x1a, 0x9b, 0x90, 0xc3, 0xc2, 0xf7, 0x37,
+	0xfb, 0x08, 0x8e, 0x48, 0x19, 0x48, 0xed, 0xa8,
+	0xa8, 0x04, 0x6f, 0xd0, 0x33, 0xe9, 0xb8, 0x8d,
+	0xe7, 0x1e, 0x5c, 0x47, 0x74, 0xc0, 0x66, 0x30,
+	0x4e, 0xa7, 0x86, 0x73, 0xf1, 0xe5, 0x78, 0xa6,
+	0xe0, 0xc1, 0xda, 0x13, 0x72, 0x07, 0x85, 0x34,
+	0x63, 0x95, 0x49, 0x30, 0x4b, 0x9d, 0x03, 0xf1,
+	0x7a, 0x6b, 0x91, 0xa2, 0x85, 0x41, 0xf9, 0x4a,
+	0xd6, 0xff, 0xff, 0x86, 0xf7, 0xf0, 0xce, 0xb9,
+	0x07, 0xf1, 0x88, 0x04, 0x33, 0xaa, 0xeb, 0x54,
+	0xb2, 0x1c, 0x8e, 0x2e, 0x7b, 0x04, 0xa8, 0xcc,
+	0x2c, 0x7a, 0xb3, 0xad, 0x1a, 0x89, 0x38, 0x89,
+	0xd7, 0x11, 0x3a, 0x8c, 0xcf, 0xe3, 0xc5, 0xba,
+	0xb0, 0xcc, 0xc4, 0xe3, 0x33, 0xf3, 0x18, 0xba,
+	0xec, 0x56, 0xd9, 0x1c, 0x40, 0x70, 0x0d, 0x4e,
+	0x97, 0x01, 0x23, 0xf3, 0x5a, 0xdc, 0xbf, 0x68,
+	0x93, 0xc2, 0x1d, 0x8a, 0x96, 0xb7, 0xac, 0x18,
+	0x6f, 0xf7, 0x84, 0x71, 0x0d, 0x3d, 0xf8, 0xba,
+	0xdf, 0xb6, 0x89, 0x1d, 0x78, 0x19, 0xf2, 0x59,
+	0xe9, 0x15, 0x55, 0x29, 0x73, 0x50, 0x59, 0x14,
+	0x02, 0x21, 0x16, 0x8f, 0x0f, 0xdf, 0xa5, 0xf0,
+static struct crc_test {
+	u32 crc;		/* random starting crc */
+	u32 start;		/* random offset in buf */
+	u32 length;	/* random length of test */
+	u32 crc_le;	/* expected crc32_le result */
+	u32 crc_be;	/* expected crc32_be result */
+} test[] = {
+	{0xffffffff, 0x00000000, 0x00001000, 0x13934bef, 0x14f3b75f},
+	{0xfe7328ea, 0x00000763, 0x00000717, 0xed2c0d70, 0x57531214},
+	{0x4c40684e, 0x00000721, 0x0000011e, 0xd7f46ccc, 0xedf12ec3},
+	{0x6b487f90, 0x00000264, 0x000007bc, 0x759e9939, 0x9af8e387},
+	{0x9f5810db, 0x00000afa, 0x00000255, 0x2685197f, 0x716de6ed},
+	{0xb15c4755, 0x00000d5b, 0x000002a4, 0xd8fadcb5, 0xfc34ae3f},
+	{0x06518253, 0x00000ffb, 0x00000004, 0xabee2433, 0xfa30ac9e},
+	{0xd9e71c55, 0x00000a2a, 0x00000259, 0x96682af2, 0xe5907ea3},
+	{0x0c1ae843, 0x00000ce4, 0x0000031b, 0x7b637c43, 0xe7f71b04},
+	{0xec3cd517, 0x000002ff, 0x00000566, 0x5d719a77, 0xed16e045},
+	{0x77828e95, 0x0000067f, 0x0000038f, 0x43ee5b6c, 0x35999927},
+	{0xec87b4e3, 0x00000d1c, 0x000002e3, 0x2ddd2eee, 0x9452d3f8},
+	{0x412158bb, 0x00000eee, 0x00000111, 0x67b38ba2, 0x177976d0},
+	{0x2e52de3e, 0x00000c4a, 0x000003b5, 0xbcc5d61d, 0xf60fee71},
+	{0x6ddaae8b, 0x00000d99, 0x00000266, 0x8b535544, 0x1dab8596},
+	{0x049b6cb1, 0x000009c5, 0x000000b0, 0xfc22cabc, 0x47ebc954},
+	{0x77d4b954, 0x0000028a, 0x000007fa, 0x71d00923, 0x905585ef},
+	{0x5e192355, 0x00000ac1, 0x000001fa, 0xb966b81a, 0x33c12903},
+	{0x7d80b71d, 0x00000213, 0x000001e0, 0x2bba371a, 0x5f4bd8d9},
+	{0x01f6f1e4, 0x000001d6, 0x00000395, 0xb7e8a647, 0x2a7943a1},
+	{0x1dfabb13, 0x00000e14, 0x000001eb, 0x53917fba, 0x8dee1e5d},
+	{0xb00a4449, 0x00000bf6, 0x00000409, 0xedecb577, 0x628e087d},
+	{0x7ecd3981, 0x0000083f, 0x0000016b, 0xefef62b9, 0xda4f94e6},
+	{0xf8f330d2, 0x000004be, 0x00000757, 0x9357c9f3, 0x8e2d5c2f},
+	{0x03c38af2, 0x00000d23, 0x000002dc, 0x360fa8c0, 0x6294c0d6},
+	{0x687bb79b, 0x00000f3d, 0x000000c2, 0x448d3be2, 0x08f48f3a},
+	{0x6710f550, 0x000009e9, 0x00000603, 0xdbfd1998, 0xc950ac29},
+	{0x873171d1, 0x00000787, 0x000004d5, 0xab7f1b62, 0xe66896ab},
+	{0x373b1314, 0x00000f0f, 0x000000f0, 0x184098ab, 0x4038e674},
+	{0x90fad9cd, 0x00000ead, 0x00000152, 0x23ce52ff, 0x9eff3974},
+	{0x19676fe7, 0x0000007d, 0x0000070d, 0xf8a76f1e, 0xfbc5c8a9},
+	{0x89facd45, 0x000005f3, 0x00000473, 0x4331a006, 0xb8f0f0cc},
+	{0x6f173747, 0x00000fc3, 0x0000003c, 0xb012f08e, 0x5126e378},
+	{0x4b44a106, 0x0000075a, 0x0000008b, 0xf6f7ac38, 0xf9b1781b},
+	{0xb620ad06, 0x00000774, 0x0000017e, 0xd34558e6, 0xb175edd3},
+	{0x976f21e9, 0x000008d7, 0x0000034a, 0xe533aa3a, 0x1e4367b9},
+	{0x687628c0, 0x000006c5, 0x0000061b, 0x3a840b15, 0xfb5989a0},
+	{0xe24ac108, 0x00000cd0, 0x0000032f, 0x51010ae8, 0xcdd8f182},
+	{0x361c44a3, 0x00000304, 0x00000719, 0xfd7bd481, 0x12de540f},
+	{0xd93ff95e, 0x00000db7, 0x0000008e, 0xcfbbc304, 0x42eecd5a},
+	{0xed752d12, 0x00000883, 0x00000091, 0x65a6c868, 0x9ebfa578},
+	{0xb4ff4b54, 0x000003d3, 0x000001c1, 0xf82597e7, 0xa8ad2b19},
+	{0x111b520f, 0x00000708, 0x000000eb, 0xc3e109f3, 0x323ace17},
+	{0x62c806f2, 0x00000ba3, 0x0000045c, 0x874d3a72, 0xaf1a1360},
+	{0x40d97470, 0x000005e1, 0x0000058d, 0x87a9684f, 0x524244a8},
+	{0x4312179c, 0x00000056, 0x0000070e, 0x809a00f5, 0xf9e940b0},
+	{0x13d5f84c, 0x00000a2d, 0x00000104, 0xf3d27578, 0x5d33341c},
+	{0x1f302cb2, 0x00000151, 0x00000014, 0x1e162693, 0x53c3cfc3},
+	{0xe491db24, 0x00000600, 0x000006f6, 0x7ff09615, 0xa300ecf7},
+	{0xf9a98069, 0x000002ba, 0x000002ad, 0x01af7387, 0x31c0911e},
+	{0xe9c477ad, 0x0000015f, 0x00000778, 0x6facf9a0, 0x1993b688},
+	{0x353f32b2, 0x0000087c, 0x00000783, 0x6cc964ea, 0x418db561},
+	{0x78e1b24f, 0x00000650, 0x000006a8, 0xb3bb7c27, 0xf2aad006},
+	{0x61aa400e, 0x00000049, 0x00000254, 0xb8cd1681, 0x79150b15},
+	{0xb84b10b0, 0x00000f73, 0x0000008c, 0x406a6450, 0x0c705222},
+	{0x9fa99c9c, 0x00000a7c, 0x000004d7, 0xfb3d21b4, 0xe4e789df},
+	{0x3fc9ebe3, 0x00000cd9, 0x000000d6, 0x43803f9c, 0x5a152be5},
+	{0x529879cd, 0x000002f2, 0x00000595, 0x78b4c6a6, 0xf7236ec4},
+	{0x3a933019, 0x00000516, 0x00000266, 0xdcb45436, 0x2c7935f5},
+	{0x887b4977, 0x00000227, 0x0000038d, 0xc5f7c3d9, 0x0d6d7df6},
+	{0x770745de, 0x000008c6, 0x00000739, 0xf69145e8, 0x47d5efc9},
+	{0x28be3b47, 0x00000c46, 0x0000032b, 0x764c028f, 0x1eb70d64},
+	{0x5013a050, 0x00000cf6, 0x00000309, 0xea8fe164, 0x186affa4},
+	{0x2ec4c9ba, 0x000006e8, 0x0000078d, 0xa35557a9, 0xb41f49ec},
+	{0xa9f950c9, 0x00000d33, 0x000002cc, 0x41ea8618, 0xab8dfae3},
+	{0x5b520229, 0x000007b2, 0x00000484, 0x44569f1f, 0x607a8052},
+	{0xd8dcbbfc, 0x0000002f, 0x0000048c, 0xdb88ab8b, 0xf1c411f1},
+	{0x25529792, 0x00000d1d, 0x000002e2, 0x20cda404, 0x32683a2d},
+	{0x9f3f6d71, 0x00000238, 0x0000079a, 0x0720443e, 0x4b8ba2ff},
+	{0x64121215, 0x000007ff, 0x0000038f, 0x6aacff2c, 0x3b84233b},
+	{0xfb6cdde0, 0x00000ef8, 0x00000107, 0xbd43a0f1, 0x926624d0},
+	{0x221c9d6f, 0x000007b6, 0x0000014f, 0xb67f834b, 0x2bdedda4},
+	{0x030e1de4, 0x00000836, 0x000004b4, 0x0d67d26a, 0x75a73b73},
+	{0xb56fa6cf, 0x00000c07, 0x000003f8, 0x60601ac1, 0x10a43f35},
+	{0xb55c89f5, 0x0000098e, 0x000001d4, 0x2400efbe, 0x006e28eb},
+	{0x5e90b6d5, 0x0000070b, 0x000003ea, 0x3bb5d6ea, 0xb175fa6b},
+	{0x2a7045ae, 0x00000961, 0x00000633, 0xfca89e4b, 0x962cd6d2},
+	{0x8b374ea9, 0x000006ba, 0x00000780, 0xbce036ed, 0x4dc8279b},
+	{0x8bd90bc9, 0x00000562, 0x00000369, 0xcb26a24b, 0x50dee743},
+	{0x5b1b1762, 0x000000fd, 0x0000051a, 0x33cdda07, 0xee75ff7b},
+	{0xa4153555, 0x0000058f, 0x000005c7, 0xbe50eeca, 0xe73fffcc},
+	{0x0be1f931, 0x00000651, 0x00000672, 0x95a25753, 0x4ad6270f},
+	{0xb7e78618, 0x00000a7f, 0x000002bb, 0xe06bcc1c, 0x1a35ee59},
+	{0x4a9bc41b, 0x00000e51, 0x000001ae, 0x709e8d2c, 0x75080ca8},
+	{0xfc359d13, 0x00000440, 0x000002f8, 0x0a58451f, 0x6fa3cfbf},
+	{0x5aa48619, 0x000006d1, 0x00000284, 0x928ead83, 0xbd600efc},
+	{0xa609afa8, 0x0000053e, 0x00000272, 0xb048c141, 0x184f80bb},
+	{0x3f108afb, 0x00000949, 0x00000150, 0x9a6bb5bc, 0x0ea02be1},
+	{0x79bec2d3, 0x000008ed, 0x00000712, 0x32692d57, 0x2eb13289},
+	{0x9429e067, 0x00000bc3, 0x0000043c, 0x5295ceff, 0x8a9014a7},
+	{0xae58b96a, 0x0000082d, 0x000007d2, 0xc2a681ba, 0x6af94089},
+	{0x95df24be, 0x00000985, 0x000004c1, 0x3a287765, 0x379fcb42},
+	{0x5e94976f, 0x00000596, 0x000004ed, 0xff00c489, 0x991fc1f5},
+	{0xf5e5f1de, 0x00000d31, 0x000002ce, 0x35f28e91, 0x543def1a},
+	{0xa2c219cf, 0x00000a3c, 0x00000374, 0x707d21eb, 0xa6d28bc1},
+	{0xf21b6ceb, 0x00000919, 0x00000135, 0x0847fb8b, 0x224468c2},
+	{0xaa988728, 0x00000787, 0x00000771, 0x885aeaa4, 0x814db00b},
+	{0xaa5dfaac, 0x000003e5, 0x0000051b, 0x52c48ab7, 0x725bef8a},
+	{0x0a053968, 0x00000d2a, 0x000002d5, 0x7a90256d, 0xc53b9402},
+	{0x1421dc20, 0x00000eef, 0x00000110, 0x97d6da24, 0x10846935},
+	{0xb47c2166, 0x00000a6a, 0x00000209, 0xcfd6cc52, 0x46e2797e},
+	{0x77dd1955, 0x000000de, 0x00000266, 0xba74bcaa, 0x4fa3fe9c},
+	{0x68a03cc2, 0x0000082f, 0x000007b0, 0x752bd5d8, 0x4f760c63},
+	{0x0226b0a3, 0x00000a5f, 0x000005a0, 0x82de4970, 0x8ee1310e},
+	{0x637bf3b1, 0x00000d93, 0x0000026c, 0x5c7115cb, 0x9f6a0ced},
+	{0x3b120edf, 0x00000c13, 0x000003ec, 0x80d7d20f, 0x241657d5},
+	{0xe2456780, 0x000002eb, 0x00000641, 0xc0a5d289, 0x74df96b4},
+	{0x9b2e7125, 0x00000c0c, 0x000003f3, 0xcc15f57e, 0x03e290bf},
+	{0x153033ef, 0x00000787, 0x000006b6, 0x3cde443b, 0x7bf1d121},
+	{0x18458b3f, 0x0000066c, 0x00000561, 0x9a2bd8c6, 0x9d564bef},
+	{0x4ff9d4b9, 0x00000c8f, 0x0000033a, 0xd0ee6d6d, 0xee00aa0b},
+	{0xdf84b5d9, 0x00000802, 0x0000029a, 0xdab0d74a, 0xd0cb63dc},
+	{0x81ee15df, 0x000003ce, 0x00000725, 0x9942e2de, 0xe48fb26b},
+	{0x5c768e04, 0x00000afd, 0x00000160, 0x36110831, 0x8dc74483},
+	{0xe5e18094, 0x00000b4b, 0x000000a0, 0xffa3e4a7, 0xc0145e1b},
+	{0xed7263b6, 0x00000d0d, 0x000002f2, 0xb0006a35, 0x5468ae3a},
+	{0x5bfde7d7, 0x000006fb, 0x00000554, 0xa4193b76, 0xb73d34b2},
+	{0x67f4a743, 0x00000b85, 0x0000047a, 0xf05c8d8f, 0x4f843e49},
+	{0xf13bdf22, 0x00000ff7, 0x00000008, 0x816351eb, 0x41f537f6},
+	{0x08ecc608, 0x00000d5d, 0x00000098, 0x90492772, 0xf5172204},
+	{0x296f52ba, 0x000004f9, 0x00000788, 0x5e5a4896, 0xe01d5b46},
+	{0xbe4624c2, 0x00000427, 0x000004ef, 0xcd267b94, 0x7b9069f4},
+	{0x906f7c7c, 0x00000a05, 0x0000003f, 0x03fcfc33, 0x7b6ff563},
+	{0x8f7b323e, 0x00000458, 0x000004c7, 0xcd4969c8, 0xd4c22ada},
+	{0x88d6593d, 0x00000597, 0x000005b5, 0xf199cd3b, 0x5c3e8ca2},
+	{0x978a7768, 0x00000268, 0x000001d3, 0xb28c95bd, 0x49a2cc67},
+	{0x857a621e, 0x000007a7, 0x000003a8, 0xf4bf84ab, 0xde26f369},
+	{0xb0e121ef, 0x000005be, 0x00000644, 0x28747c14, 0x61d4dc6b},
+	{0, 0, 0, 0, 0},
+static int test_crc32c(void)
+	struct crc_test *t = test;
+	int failures = 0;
+	while (t->length) {
+		u32 be, le;
+		le = crc32c_le(t->crc, test_buf + t->start, t->length);
+		be = crc32c_be(t->crc, test_buf + t->start, t->length);
+		if (le != t->crc_le) {
+			printk(KERN_INFO "crc32c test %d LE fails, %x != %x\n",
+			       (t - test), le, t->crc_le);
+			failures++;
+		}
+		if (be != t->crc_be) {
+			printk(KERN_INFO "crc32c test %d BE fails, %x != %x\n",
+			       (t - test), be, t->crc_be);
+			failures++;
+		}
+		t++;
+	}
+	return failures;
+static int __init libcrc32c_test_mod_init(void)
+	return test_crc32c() ? -EIO : -EAGAIN;
+MODULE_AUTHOR("Darrick J. Wong <>");
+MODULE_DESCRIPTION("CRC32c (Castagnoli) self-test");