On Wed, 2013-05-01 at 12:52 -0700, Tim Chen wrote:
> Currently the CRC-T10DIF checksum is computed using a generic table lookup
> algorithm. By switching the checksum to PCLMULQDQ based computation,
> we can speedup the computation by 8x for checksumming 512 bytes and
> even mor
On Tue, 2013-04-30 at 11:27 +0800, Herbert Xu wrote:
> On Mon, Apr 29, 2013 at 01:40:30PM -0700, Tim Chen wrote:
> >
> > If I allocate the transform under the mod init instead, how can I make
> > sure that the fast version is already registered if I have it compiled
> >
ents/white-papers/fast-crc-computation-generic-polynomials-pclmulqdq-paper.pdf
Signed-off-by: Tim Chen
---
arch/x86/crypto/crct10dif-pcl-asm_64.S | 643 +
1 file changed, 643 insertions(+)
create mode 100644 arch/x86/crypto/crct10dif-pcl-asm_64.S
diff --git a/arch/
turbo off when running the
speed test so the frequency governor will not tweak the frequency and
affects the measurements.
Signed-off-by: Tim Chen
---
crypto/tcrypt.c | 8
crypto/testmgr.c | 10 ++
crypto/testmgr.h | 33 +
3 files changed, 51
: Tim Chen
---
arch/x86/crypto/Makefile| 2 +
arch/x86/crypto/crct10dif-pclmul_glue.c | 157
crypto/Kconfig | 11 +++
3 files changed, 170 insertions(+)
create mode 100644 arch/x86/crypto/crct10dif-pclmul_glue.c
diff --git
When CRC T10 DIF is calculated using the crypto transform framework, we
wrap the crc_t10dif function call to utilize it. This allows us to
take advantage of any accelerated CRC T10 DIF transform that is
plugged into the crypto framework.
Signed-off-by: Tim Chen
---
crypto/Kconfig
Herbert Xu, Matthew Wilcox and Jussi Kivilinna who reviewed the
patches and
Keith Busch for testing version 1 of the patch set.
Tim Chen (4):
Wrap crc_t10dif function all to use crypto transform framework
Accelerated CRC T10 DIF computation with PCLMULQDQ instruction
Glue code to cast
On Sun, 2013-04-28 at 08:11 +0800, Herbert Xu wrote:
> On Fri, Apr 26, 2013 at 09:44:17AM -0700, Tim Chen wrote:
> >
> > + old_tfm = crct10dif_tfm;
> > + crc_t10dif_newalg = true;
> > + /* make sure new alg flag is turned on before starting
On Fri, 2013-04-26 at 20:52 +0800, Herbert Xu wrote:
> On Thu, Apr 25, 2013 at 10:28:30AM -0700, Tim Chen wrote:
> >
> > @@ -51,6 +54,98 @@ static const __u16 t10_dif_crc_table[256] = {
> > 0xF0D8, 0x7B6F, 0x6C01, 0xE7B6, 0x42DD, 0xC96A, 0xDE04, 0x55B3
>
calculated using the crypto transform framework, we
wrap the crc_t10dif function call to utilize it. This allows us to
take advantage of any accelerated CRC T10 DIF transform that is
plugged into the crypto framework.
Signed-off-by: Tim Chen
---
crypto/Makefile| 1 +
crypto/
turbo off when running the
speed test so the frequency governor will not tweak the frequency and
affects the measurements.
Signed-off-by: Tim Chen
---
crypto/tcrypt.c | 8
crypto/testmgr.c | 10 ++
crypto/testmgr.h | 33 +
3 files changed, 51
ents/white-papers/fast-crc-computation-generic-polynomials-pclmulqdq-paper.pdf
Signed-off-by: Tim Chen
---
arch/x86/crypto/crct10dif-pcl-asm_64.S | 643 +
1 file changed, 643 insertions(+)
create mode 100644 arch/x86/crypto/crct10dif-pcl-asm_64.S
diff --git a/arch/
: Tim Chen
---
arch/x86/crypto/Makefile| 2 +
arch/x86/crypto/crct10dif-pclmul_glue.c | 153
crypto/Kconfig | 21 +
3 files changed, 176 insertions(+)
create mode 100644 arch/x86/crypto/crct10dif-pclmul_glue.c
diff
When CRC T10 DIF is calculated using the crypto transform framework, we
wrap the crc_t10dif function call to utilize it. This allows us to
take advantage of any accelerated CRC T10 DIF transform that is
plugged into the crypto framework.
Signed-off-by: Tim Chen
---
include/linux/crc-t10dif.h
ths through
crc t10dif computation.
4. Fix config dependencies of CRYPTO_CRCT10DIF.
Thanks to Matthew and Jussi who reviewed the patches and Keith
for testing version 1 of the patch set.
Tim Chen (4):
Wrap crc_t10dif function all to use crypto transform framework
Accelerated CRC T10
On Wed, 2013-04-17 at 20:58 +0300, Jussi Kivilinna wrote:
> On 16.04.2013 19:20, Tim Chen wrote:
> > This is the x86_64 CRC T10 DIF transform accelerated with the PCLMULQDQ
> > instructions. Details discussing the implementation can be found in the
> > paper:
> >
&g
On Wed, 2013-04-17 at 20:58 +0300, Jussi Kivilinna wrote:
> On 16.04.2013 19:20, Tim Chen wrote:
> > These are simple tests to do sanity check of CRC T10 DIF hash. The
> > correctness of the transform can be checked with the command
> > modprobe tcrypt mode=47
> >
323102.pdf
Signed-off-by: Tim Chen
Tested-by: Keith Busch
---
arch/x86/crypto/crct10dif-pcl-asm_64.S | 659 +
1 file changed, 659 insertions(+)
create mode 100644 arch/x86/crypto/crct10dif-pcl-asm_64.S
diff --git a/arch/x86/crypto/crct10dif-pcl-asm_64.S
b/arch/
.
Will appreciate if you can consider merging this for the 3.10 kernel.
Tim
Tim Chen (4):
Wrap crc_t10dif function all to use crypto transform framework
Accelerated CRC T10 DIF computation with PCLMULQDQ instruction
Glue code to cast accelerated CRCT10DIF assembly as a crypto
transform
: Tim Chen
Tested-by: Keith Busch
---
arch/x86/crypto/Makefile| 2 +
arch/x86/crypto/crct10dif-pclmul_glue.c | 153
crypto/Kconfig | 21 +
3 files changed, 176 insertions(+)
create mode 100644 arch/x86/crypto/crct10dif
When CRC T10 DIF is calculated using the crypto transform framework, we
wrap the crc_t10dif function call to utilize it. This allows us to
take advantage of any accelerated CRC T10 DIF transform that is
plugged into the crypto framework.
Signed-off-by: Tim Chen
Tested-by: Keith Busch
turbo off when running the
speed test so the frequency governor will not tweak the frequency and
affects the measurements.
Signed-off-by: Tim Chen
Tested-by: Keith Busch
---
crypto/tcrypt.c | 8
crypto/testmgr.c | 10 ++
crypto/testmgr.h | 24
3 files
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