The "by8" implementation introduced in commit 22cddcc7df ("crypto: aes
- AES CTR x86_64 "by8" AVX optimization") is failing crypto tests as it
handles counter block overflows differently. It only accounts the right
most 32 bit as a counter -- not the whole block as all other
implementations do. This makes it fail the cryptomgr test #4 that
specifically tests this corner case.
As we're quite late in the release cycle, just disable the "by8" variant
for now.
Reported-by: Romain Francoise <romain@orebokech.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Chandramouli Narayanan <mouli@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch introduces the multi-buffer job manager which is responsible
for submitting scatter-gather buffers from several SHA1 jobs to the
multi-buffer algorithm. It also contains the flush routine to that's
called by the crypto daemon to complete the job when no new jobs arrive
before the deadline of maximum latency of a SHA1 crypto job.
The SHA1 multi-buffer crypto algorithm is defined and initialized in
this patch.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch introduces the assembly routines to do SHA1 computation on
buffers belonging to serveral jobs at once. The assembly routines are
optimized with AVX2 instructions that have 8 data lanes and using AVX2
registers.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch introduces the routines used to submit and flush buffers
belonging to SHA1 crypto jobs to the SHA1 multibuffer algorithm. It is
implemented mostly in assembly optimized with AVX2 instructions.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch introduces the data structures and prototypes of functions
needed for computing SHA1 hash using multi-buffer. Included are the
structures of the multi-buffer SHA1 job, job scheduler in C and x86
assembly.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Pull crypto update from Herbert Xu:
- CTR(AES) optimisation on x86_64 using "by8" AVX.
- arm64 support to ccp
- Intel QAT crypto driver
- Qualcomm crypto engine driver
- x86-64 assembly optimisation for 3DES
- CTR(3DES) speed test
- move FIPS panic from module.c so that it only triggers on crypto
modules
- SP800-90A Deterministic Random Bit Generator (drbg).
- more test vectors for ghash.
- tweak self tests to catch partial block bugs.
- misc fixes.
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (94 commits)
crypto: drbg - fix failure of generating multiple of 2**16 bytes
crypto: ccp - Do not sign extend input data to CCP
crypto: testmgr - add missing spaces to drbg error strings
crypto: atmel-tdes - Switch to managed version of kzalloc
crypto: atmel-sha - Switch to managed version of kzalloc
crypto: testmgr - use chunks smaller than algo block size in chunk tests
crypto: qat - Fixed SKU1 dev issue
crypto: qat - Use hweight for bit counting
crypto: qat - Updated print outputs
crypto: qat - change ae_num to ae_id
crypto: qat - change slice->regions to slice->region
crypto: qat - use min_t macro
crypto: qat - remove unnecessary parentheses
crypto: qat - remove unneeded header
crypto: qat - checkpatch blank lines
crypto: qat - remove unnecessary return codes
crypto: Resolve shadow warnings
crypto: ccp - Remove "select OF" from Kconfig
crypto: caam - fix DECO RSR polling
crypto: qce - Let 'DEV_QCE' depend on both HAS_DMA and HAS_IOMEM
...
Byte-to-bit-count computation is only partly converted to big-endian and is
mixing in CPU-endian values. Problem was noticed by sparce with warning:
CHECK arch/x86/crypto/sha512_ssse3_glue.c
arch/x86/crypto/sha512_ssse3_glue.c:144:19: warning: restricted __be64 degrades to integer
arch/x86/crypto/sha512_ssse3_glue.c:144:17: warning: incorrect type in assignment (different base types)
arch/x86/crypto/sha512_ssse3_glue.c:144:17: expected restricted __be64 <noident>
arch/x86/crypto/sha512_ssse3_glue.c:144:17: got unsigned long long
Cc: <stable@vger.kernel.org>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch introduces "by8" AES CTR mode AVX optimization inspired by
Intel Optimized IPSEC Cryptograhpic library. For additional information,
please see:
http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=22972
The functions aes_ctr_enc_128_avx_by8(), aes_ctr_enc_192_avx_by8() and
aes_ctr_enc_256_avx_by8() are adapted from
Intel Optimized IPSEC Cryptographic library. When both AES and AVX features
are enabled in a platform, the glue code in AESNI module overrieds the
existing "by4" CTR mode en/decryption with the "by8"
AES CTR mode en/decryption.
On a Haswell desktop, with turbo disabled and all cpus running
at maximum frequency, the "by8" CTR mode optimization
shows better performance results across data & key sizes
as measured by tcrypt.
The average performance improvement of the "by8" version over the "by4"
version is as follows:
For 128 bit key and data sizes >= 256 bytes, there is a 10-16% improvement.
For 192 bit key and data sizes >= 256 bytes, there is a 20-22% improvement.
For 256 bit key and data sizes >= 256 bytes, there is a 20-25% improvement.
A typical run of tcrypt with AES CTR mode encryption of the "by4" and "by8"
optimization shows the following results:
tcrypt with "by4" AES CTR mode encryption optimization on a Haswell Desktop:
---------------------------------------------------------------------------
testing speed of __ctr-aes-aesni encryption
test 0 (128 bit key, 16 byte blocks): 1 operation in 343 cycles (16 bytes)
test 1 (128 bit key, 64 byte blocks): 1 operation in 336 cycles (64 bytes)
test 2 (128 bit key, 256 byte blocks): 1 operation in 491 cycles (256 bytes)
test 3 (128 bit key, 1024 byte blocks): 1 operation in 1130 cycles (1024 bytes)
test 4 (128 bit key, 8192 byte blocks): 1 operation in 7309 cycles (8192 bytes)
test 5 (192 bit key, 16 byte blocks): 1 operation in 346 cycles (16 bytes)
test 6 (192 bit key, 64 byte blocks): 1 operation in 361 cycles (64 bytes)
test 7 (192 bit key, 256 byte blocks): 1 operation in 543 cycles (256 bytes)
test 8 (192 bit key, 1024 byte blocks): 1 operation in 1321 cycles (1024 bytes)
test 9 (192 bit key, 8192 byte blocks): 1 operation in 9649 cycles (8192 bytes)
test 10 (256 bit key, 16 byte blocks): 1 operation in 369 cycles (16 bytes)
test 11 (256 bit key, 64 byte blocks): 1 operation in 366 cycles (64 bytes)
test 12 (256 bit key, 256 byte blocks): 1 operation in 595 cycles (256 bytes)
test 13 (256 bit key, 1024 byte blocks): 1 operation in 1531 cycles (1024 bytes)
test 14 (256 bit key, 8192 byte blocks): 1 operation in 10522 cycles (8192 bytes)
testing speed of __ctr-aes-aesni decryption
test 0 (128 bit key, 16 byte blocks): 1 operation in 336 cycles (16 bytes)
test 1 (128 bit key, 64 byte blocks): 1 operation in 350 cycles (64 bytes)
test 2 (128 bit key, 256 byte blocks): 1 operation in 487 cycles (256 bytes)
test 3 (128 bit key, 1024 byte blocks): 1 operation in 1129 cycles (1024 bytes)
test 4 (128 bit key, 8192 byte blocks): 1 operation in 7287 cycles (8192 bytes)
test 5 (192 bit key, 16 byte blocks): 1 operation in 350 cycles (16 bytes)
test 6 (192 bit key, 64 byte blocks): 1 operation in 359 cycles (64 bytes)
test 7 (192 bit key, 256 byte blocks): 1 operation in 635 cycles (256 bytes)
test 8 (192 bit key, 1024 byte blocks): 1 operation in 1324 cycles (1024 bytes)
test 9 (192 bit key, 8192 byte blocks): 1 operation in 9595 cycles (8192 bytes)
test 10 (256 bit key, 16 byte blocks): 1 operation in 364 cycles (16 bytes)
test 11 (256 bit key, 64 byte blocks): 1 operation in 377 cycles (64 bytes)
test 12 (256 bit key, 256 byte blocks): 1 operation in 604 cycles (256 bytes)
test 13 (256 bit key, 1024 byte blocks): 1 operation in 1527 cycles (1024 bytes)
test 14 (256 bit key, 8192 byte blocks): 1 operation in 10549 cycles (8192 bytes)
tcrypt with "by8" AES CTR mode encryption optimization on a Haswell Desktop:
---------------------------------------------------------------------------
testing speed of __ctr-aes-aesni encryption
test 0 (128 bit key, 16 byte blocks): 1 operation in 340 cycles (16 bytes)
test 1 (128 bit key, 64 byte blocks): 1 operation in 330 cycles (64 bytes)
test 2 (128 bit key, 256 byte blocks): 1 operation in 450 cycles (256 bytes)
test 3 (128 bit key, 1024 byte blocks): 1 operation in 1043 cycles (1024 bytes)
test 4 (128 bit key, 8192 byte blocks): 1 operation in 6597 cycles (8192 bytes)
test 5 (192 bit key, 16 byte blocks): 1 operation in 339 cycles (16 bytes)
test 6 (192 bit key, 64 byte blocks): 1 operation in 352 cycles (64 bytes)
test 7 (192 bit key, 256 byte blocks): 1 operation in 539 cycles (256 bytes)
test 8 (192 bit key, 1024 byte blocks): 1 operation in 1153 cycles (1024 bytes)
test 9 (192 bit key, 8192 byte blocks): 1 operation in 8458 cycles (8192 bytes)
test 10 (256 bit key, 16 byte blocks): 1 operation in 353 cycles (16 bytes)
test 11 (256 bit key, 64 byte blocks): 1 operation in 360 cycles (64 bytes)
test 12 (256 bit key, 256 byte blocks): 1 operation in 512 cycles (256 bytes)
test 13 (256 bit key, 1024 byte blocks): 1 operation in 1277 cycles (1024 bytes)
test 14 (256 bit key, 8192 byte blocks): 1 operation in 8745 cycles (8192 bytes)
testing speed of __ctr-aes-aesni decryption
test 0 (128 bit key, 16 byte blocks): 1 operation in 348 cycles (16 bytes)
test 1 (128 bit key, 64 byte blocks): 1 operation in 335 cycles (64 bytes)
test 2 (128 bit key, 256 byte blocks): 1 operation in 451 cycles (256 bytes)
test 3 (128 bit key, 1024 byte blocks): 1 operation in 1030 cycles (1024 bytes)
test 4 (128 bit key, 8192 byte blocks): 1 operation in 6611 cycles (8192 bytes)
test 5 (192 bit key, 16 byte blocks): 1 operation in 354 cycles (16 bytes)
test 6 (192 bit key, 64 byte blocks): 1 operation in 346 cycles (64 bytes)
test 7 (192 bit key, 256 byte blocks): 1 operation in 488 cycles (256 bytes)
test 8 (192 bit key, 1024 byte blocks): 1 operation in 1154 cycles (1024 bytes)
test 9 (192 bit key, 8192 byte blocks): 1 operation in 8390 cycles (8192 bytes)
test 10 (256 bit key, 16 byte blocks): 1 operation in 357 cycles (16 bytes)
test 11 (256 bit key, 64 byte blocks): 1 operation in 362 cycles (64 bytes)
test 12 (256 bit key, 256 byte blocks): 1 operation in 515 cycles (256 bytes)
test 13 (256 bit key, 1024 byte blocks): 1 operation in 1284 cycles (1024 bytes)
test 14 (256 bit key, 8192 byte blocks): 1 operation in 8681 cycles (8192 bytes)
crypto: Incorporate feed back to AES CTR mode optimization patch
Specifically, the following:
a) alignment around main loop in aes_ctrby8_avx_x86_64.S
b) .rodata around data constants used in the assembely code.
c) the use of CONFIG_AVX in the glue code.
d) fix up white space.
e) informational message for "by8" AES CTR mode optimization
f) "by8" AES CTR mode optimization can be simply enabled
if the platform supports both AES and AVX features. The
optimization works superbly on Sandybridge as well.
Testing on Haswell shows no performance change since the last.
Testing on Sandybridge shows that the "by8" AES CTR mode optimization
greatly improves performance.
tcrypt log with "by4" AES CTR mode optimization on Sandybridge
--------------------------------------------------------------
testing speed of __ctr-aes-aesni encryption
test 0 (128 bit key, 16 byte blocks): 1 operation in 383 cycles (16 bytes)
test 1 (128 bit key, 64 byte blocks): 1 operation in 408 cycles (64 bytes)
test 2 (128 bit key, 256 byte blocks): 1 operation in 707 cycles (256 bytes)
test 3 (128 bit key, 1024 byte blocks): 1 operation in 1864 cycles (1024 bytes)
test 4 (128 bit key, 8192 byte blocks): 1 operation in 12813 cycles (8192 bytes)
test 5 (192 bit key, 16 byte blocks): 1 operation in 395 cycles (16 bytes)
test 6 (192 bit key, 64 byte blocks): 1 operation in 432 cycles (64 bytes)
test 7 (192 bit key, 256 byte blocks): 1 operation in 780 cycles (256 bytes)
test 8 (192 bit key, 1024 byte blocks): 1 operation in 2132 cycles (1024 bytes)
test 9 (192 bit key, 8192 byte blocks): 1 operation in 15765 cycles (8192 bytes)
test 10 (256 bit key, 16 byte blocks): 1 operation in 416 cycles (16 bytes)
test 11 (256 bit key, 64 byte blocks): 1 operation in 438 cycles (64 bytes)
test 12 (256 bit key, 256 byte blocks): 1 operation in 842 cycles (256 bytes)
test 13 (256 bit key, 1024 byte blocks): 1 operation in 2383 cycles (1024 bytes)
test 14 (256 bit key, 8192 byte blocks): 1 operation in 16945 cycles (8192 bytes)
testing speed of __ctr-aes-aesni decryption
test 0 (128 bit key, 16 byte blocks): 1 operation in 389 cycles (16 bytes)
test 1 (128 bit key, 64 byte blocks): 1 operation in 409 cycles (64 bytes)
test 2 (128 bit key, 256 byte blocks): 1 operation in 704 cycles (256 bytes)
test 3 (128 bit key, 1024 byte blocks): 1 operation in 1865 cycles (1024 bytes)
test 4 (128 bit key, 8192 byte blocks): 1 operation in 12783 cycles (8192 bytes)
test 5 (192 bit key, 16 byte blocks): 1 operation in 409 cycles (16 bytes)
test 6 (192 bit key, 64 byte blocks): 1 operation in 434 cycles (64 bytes)
test 7 (192 bit key, 256 byte blocks): 1 operation in 792 cycles (256 bytes)
test 8 (192 bit key, 1024 byte blocks): 1 operation in 2151 cycles (1024 bytes)
test 9 (192 bit key, 8192 byte blocks): 1 operation in 15804 cycles (8192 bytes)
test 10 (256 bit key, 16 byte blocks): 1 operation in 421 cycles (16 bytes)
test 11 (256 bit key, 64 byte blocks): 1 operation in 444 cycles (64 bytes)
test 12 (256 bit key, 256 byte blocks): 1 operation in 840 cycles (256 bytes)
test 13 (256 bit key, 1024 byte blocks): 1 operation in 2394 cycles (1024 bytes)
test 14 (256 bit key, 8192 byte blocks): 1 operation in 16928 cycles (8192 bytes)
tcrypt log with "by8" AES CTR mode optimization on Sandybridge
--------------------------------------------------------------
testing speed of __ctr-aes-aesni encryption
test 0 (128 bit key, 16 byte blocks): 1 operation in 383 cycles (16 bytes)
test 1 (128 bit key, 64 byte blocks): 1 operation in 401 cycles (64 bytes)
test 2 (128 bit key, 256 byte blocks): 1 operation in 522 cycles (256 bytes)
test 3 (128 bit key, 1024 byte blocks): 1 operation in 1136 cycles (1024 bytes)
test 4 (128 bit key, 8192 byte blocks): 1 operation in 7046 cycles (8192 bytes)
test 5 (192 bit key, 16 byte blocks): 1 operation in 394 cycles (16 bytes)
test 6 (192 bit key, 64 byte blocks): 1 operation in 418 cycles (64 bytes)
test 7 (192 bit key, 256 byte blocks): 1 operation in 559 cycles (256 bytes)
test 8 (192 bit key, 1024 byte blocks): 1 operation in 1263 cycles (1024 bytes)
test 9 (192 bit key, 8192 byte blocks): 1 operation in 9072 cycles (8192 bytes)
test 10 (256 bit key, 16 byte blocks): 1 operation in 408 cycles (16 bytes)
test 11 (256 bit key, 64 byte blocks): 1 operation in 428 cycles (64 bytes)
test 12 (256 bit key, 256 byte blocks): 1 operation in 595 cycles (256 bytes)
test 13 (256 bit key, 1024 byte blocks): 1 operation in 1385 cycles (1024 bytes)
test 14 (256 bit key, 8192 byte blocks): 1 operation in 9224 cycles (8192 bytes)
testing speed of __ctr-aes-aesni decryption
test 0 (128 bit key, 16 byte blocks): 1 operation in 390 cycles (16 bytes)
test 1 (128 bit key, 64 byte blocks): 1 operation in 402 cycles (64 bytes)
test 2 (128 bit key, 256 byte blocks): 1 operation in 530 cycles (256 bytes)
test 3 (128 bit key, 1024 byte blocks): 1 operation in 1135 cycles (1024 bytes)
test 4 (128 bit key, 8192 byte blocks): 1 operation in 7079 cycles (8192 bytes)
test 5 (192 bit key, 16 byte blocks): 1 operation in 414 cycles (16 bytes)
test 6 (192 bit key, 64 byte blocks): 1 operation in 417 cycles (64 bytes)
test 7 (192 bit key, 256 byte blocks): 1 operation in 572 cycles (256 bytes)
test 8 (192 bit key, 1024 byte blocks): 1 operation in 1312 cycles (1024 bytes)
test 9 (192 bit key, 8192 byte blocks): 1 operation in 9073 cycles (8192 bytes)
test 10 (256 bit key, 16 byte blocks): 1 operation in 415 cycles (16 bytes)
test 11 (256 bit key, 64 byte blocks): 1 operation in 454 cycles (64 bytes)
test 12 (256 bit key, 256 byte blocks): 1 operation in 598 cycles (256 bytes)
test 13 (256 bit key, 1024 byte blocks): 1 operation in 1407 cycles (1024 bytes)
test 14 (256 bit key, 8192 byte blocks): 1 operation in 9288 cycles (8192 bytes)
crypto: Fix redundant checks
a) Fix the redundant check for cpu_has_aes
b) Fix the key length check when invoking the CTR mode "by8"
encryptor/decryptor.
crypto: fix typo in AES ctr mode transform
Signed-off-by: Chandramouli Narayanan <mouli@linux.intel.com>
Reviewed-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
There's no need for the K_table to be made of 64-bit words. For some
reason, the original authors didn't fully reduce the values modulo the
CRC32C polynomial, and so had some 33-bit values in there. They can
all be reduced to 32 bits.
Doing that cuts the table size in half. Since the code depends on both
pclmulq and crc32, SSE 4.1 is obviously present, so we can use pmovzxdq
to fetch it in the correct format.
This adds (measured on Ivy Bridge) 1 cycle per main loop iteration
(CRC of up to 3K bytes), less than 0.2%. The hope is that the reduced
D-cache footprint will make up the loss in other code.
Two other related fixes:
* K_table is read-only, so belongs in .rodata, and
* There's no need for more than 8-byte alignment
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: George Spelvin <linux@horizon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The internal key isn't actually in big-endian format so let's switch
to u128 which also happens to allow us to remove a sparse warning.
Based on suggestion by Ard Biesheuvel.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
The GHASH setkey() function uses SSE registers but fails to call
kernel_fpu_begin()/kernel_fpu_end(). Instead of adding these calls, and
then having to deal with the restriction that they cannot be called from
interrupt context, move the setkey() implementation to the C domain.
Note that setkey() does not use any particular SSE features and is not
expected to become a performance bottleneck.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Fixes: 0e1227d356 (crypto: ghash - Add PCLMULQDQ accelerated implementation)
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
There is really no need to page align sha1_transform_avx2. The default
alignment is just fine. This is not the hot code but only the entry
point, after all.
Cc: Chandramouli Narayanan <mouli@linux.intel.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Reviewed-by: H. Peter Anvin <hpa@linux.intel.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The AVX2 implementation might waste up to a page of stack memory because
of a wrong alignment calculation. This will, in the worst case, increase
the stack usage of sha1_transform_avx2() alone to 5.4 kB -- way to big
for a kernel function. Even worse, it might also allocate *less* bytes
than needed if the stack pointer is already aligned bacause in that case
the 'sub %rbx, %rsp' is effectively moving the stack pointer upwards,
not downwards.
Fix those issues by changing and simplifying the alignment calculation
to use a 32 byte alignment, the alignment really needed.
Cc: Chandramouli Narayanan <mouli@linux.intel.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Reviewed-by: H. Peter Anvin <hpa@linux.intel.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Commit 7c1da8d0d0 "crypto: sha - SHA1 transform x86_64 AVX2"
accidentally disabled the AVX variant by making the avx_usable() test
not only fail in case the CPU doesn't support AVX or OSXSAVE but also
if it doesn't support AVX2.
Fix that regression by splitting up the AVX/AVX2 test into two
functions. Also test for the BMI1 extension in the avx2_usable() test
as the AVX2 implementation not only makes use of BMI2 but also BMI1
instructions.
Cc: Chandramouli Narayanan <mouli@linux.intel.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Reviewed-by: H. Peter Anvin <hpa@linux.intel.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This git patch adds x86_64 AVX2 optimization of SHA1
transform to crypto support. The patch has been tested with 3.14.0-rc1
kernel.
On a Haswell desktop, with turbo disabled and all cpus running
at maximum frequency, tcrypt shows AVX2 performance improvement
from 3% for 256 bytes update to 16% for 1024 bytes update over
AVX implementation.
This patch adds sha1_avx2_transform(), the glue, build and
configuration changes needed for AVX2 optimization of
SHA1 transform to crypto support.
sha1-ssse3 is one module which adds the necessary optimization
support (SSSE3/AVX/AVX2) for the low-level SHA1 transform function.
With better optimization support, transform function is overridden
as the case may be. In the case of AVX2, due to performance reasons
across datablock sizes, the AVX or AVX2 transform function is used
at run-time as it suits best. The Makefile change therefore appends
the necessary objects to the linkage. Due to this, the patch merely
appends AVX2 transform to the existing build mix and Kconfig support
and leaves the configuration build support as is.
Signed-off-by: Chandramouli Narayanan <mouli@linux.intel.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
We checked "nbytes < bsize" before so it can't happen here.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Acked-by: Johannes Götzfried <johannes.goetzfried@cs.fau.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
We rename aesni-intel_avx.S to aesni-intel_avx-x86_64.S to indicate
that it is only used by x86_64 architecture.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
It seems commit d764593a "crypto: aesni - AVX and AVX2 version of AESNI-GCM
encode and decode" breaks a build on x86_32 since it's designed only for
x86_64. This patch makes a compilation unit conditional to CONFIG_64BIT and
functions usage to CONFIG_X86_64.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
We have added AVX and AVX2 routines that optimize AESNI-GCM encode/decode.
These routines are optimized for encrypt and decrypt of large buffers.
In tests we have seen up to 6% speedup for 1K, 11% speedup for 2K and
18% speedup for 8K buffer over the existing SSE version. These routines
should provide even better speedup for future Intel x86_64 cpus.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Replace remaining occurences (just as we did in crypto/) under arch/*/crypto/
that make use of memcmp() for comparing keys or authentication tags for
usage with crypto_memneq(). It can simply be used as a drop-in replacement
for the normal memcmp().
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: James Yonan <james@openvpn.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The AVX2 implementation also uses BMI2 instructions,
but doesn't test for their availability. The assumption
that AVX2 and BMI2 always go together is false. Some
Haswells have AVX2 but not BMI2.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Move all users of ablk_helper under x86/ to the generic version
and delete the x86 specific version.
Acked-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Commit 3d387ef08c (Revert "crypto: blowfish - add AVX2/x86_64 implementation
of blowfish cipher") reverted too much as it removed the 'assembler supports
AVX2' check and therefore disabled remaining AVX2 implementations of Camellia
and Serpent. Patch restores the check and enables these implementations.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Commit a710f761f (crypto: sha256_ssse3 - add sha224 support) attempted to add
MODULE_ALIAS for SHA-224, but it ended up being "sha384", probably because
mix-up with previous commit 340991e30 (crypto: sha512_ssse3 - add sha384
support). Patch corrects module alias to "sha224".
Reported-by: Pierre-Mayeul Badaire <pierre-mayeul.badaire@m4x.org>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch reinstates commits
67822649d739761214ee0b95a7f85731d939625a2d31e518a4
Now that module softdeps are in the kernel we can use that to resolve
the boot issue which cause the revert.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Adjust alignment and replace commas by semicolons in automatically
generated code.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tables used from assembler should be marked __visible to let
the compiler know.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Pull crypto fixes from Herbert Xu:
"This push fixes a memory corruption issue in caam, as well as
reverting the new optimised crct10dif implementation as it breaks boot
on initrd systems.
Hopefully crct10dif will be reinstated once the supporting code is
added so that it doesn't break boot"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
Revert "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"
crypto: caam - Fixed the memory out of bound overwrite issue
This reverts commits
67822649d739761214ee0b95a7f85731d939625a2d31e518a4
Unfortunately this change broke boot on some systems that used an
initrd which does not include the newly created crct10dif modules.
As these modules are required by sd_mod under certain configurations
this is a serious problem.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Pull crypto fix from Herbert Xu:
"This fixes an unaligned crash in XTS mode when using aseni_intel"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: aesni_intel - fix accessing of unaligned memory
This reverts commit cf1521a1a5.
Instruction (vpgatherdd) that this implementation relied on turned out to be
slow performer on real hardware (i5-4570). The previous 8-way twofish/AVX
implementation is therefore faster and this implementation should be removed.
Converting this implementation to use the same method as in twofish/AVX for
table look-ups would give additional ~3% speed up vs twofish/AVX, but would
hardly be worth of the added code and binary size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This reverts commit 6048801070.
Instruction (vpgatherdd) that this implementation relied on turned out to be
slow performer on real hardware (i5-4570). The previous 4-way blowfish
implementation is therefore faster and this implementation should be removed.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add implementation tuned for more performance on real hardware. Changes are
mostly around the part mixing 128-bit extract and insert instructions and
AES-NI instructions. Also 'vpbroadcastb' instructions have been change to
'vpshufb with zero mask'.
Tests on Intel Core i5-4570:
tcrypt ECB results, old-AVX2 vs new-AVX2:
size 128bit key 256bit key
enc dec enc dec
256 1.00x 1.00x 1.00x 1.00x
1k 1.08x 1.09x 1.05x 1.06x
8k 1.06x 1.06x 1.06x 1.06x
tcrypt ECB results, AVX vs new-AVX2:
size 128bit key 256bit key
enc dec enc dec
256 1.00x 1.00x 1.00x 1.00x
1k 1.51x 1.50x 1.52x 1.50x
8k 1.47x 1.48x 1.48x 1.48x
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The new XTS code for aesni_intel uses input buffers directly as memory operands
for pxor instructions, which causes crash if those buffers are not aligned to
16 bytes.
Patch changes XTS code to handle unaligned memory correctly, by loading memory
with movdqu instead.
Reported-by: Dave Jones <davej@redhat.com>
Tested-by: Dave Jones <davej@redhat.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Pull x86 fixes from Peter Anvin:
- Three EFI-related fixes
- Two early memory initialization fixes
- build fix for older binutils
- fix for an eager FPU performance regression -- currently we don't
allow the use of the FPU at interrupt time *at all* in eager mode,
which is clearly wrong.
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Allow FPU to be used at interrupt time even with eagerfpu
x86, crc32-pclmul: Fix build with older binutils
x86-64, init: Fix a possible wraparound bug in switchover in head_64.S
x86, range: fix missing merge during add range
x86, efi: initial the local variable of DataSize to zero
efivar: fix oops in efivar_update_sysfs_entries() caused by memory reuse
efivarfs: Never return ENOENT from firmware again
binutils prior to 2.18 (e.g. the ones found on SLE10) don't support
assembling PEXTRD, so a macro based approach like the one for PCLMULQDQ
in the same file should be used.
This requires making the helper macros capable of recognizing 32-bit
general purpose register operands.
[ hpa: tagging for stable as it is a low risk build fix ]
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Link: http://lkml.kernel.org/r/51A6142A02000078000D99D8@nat28.tlf.novell.com
Cc: Alexander Boyko <alexander_boyko@xyratex.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Huang Ying <ying.huang@intel.com>
Cc: <stable@vger.kernel.org> v3.9
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Add sha224 implementation to sha256_ssse3 module.
This also fixes sha256_ssse3 module autoloading issue when 'sha224' is used
before 'sha256'. Previously in such case, just sha256_generic was loaded and
not sha256_ssse3 (since it did not provide sha224). Now if 'sha256' was used
after 'sha224' usage, sha256_ssse3 would remain unloaded.
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add sha384 implementation to sha512_ssse3 module.
This also fixes sha512_ssse3 module autoloading issue when 'sha384' is used
before 'sha512'. Previously in such case, just sha512_generic was loaded and
not sha512_ssse3 (since it did not provide sha384). Now if 'sha512' was used
after 'sha384' usage, sha512_ssse3 would remain unloaded. For example, this
happens with tcrypt testing module since it tests 'sha384' before 'sha512'.
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The _XFER stack element size was set too small, 8 bytes, when it needs to be
16 bytes. As _XFER is the last stack element used by these implementations,
the 16 byte stores with 'movdqa' corrupt the stack where the value of register
%r12 is temporarily stored. As these implementations align the stack pointer
to 16 bytes, this corruption did not happen every time.
Patch corrects this issue.
Reported-by: Julian Wollrath <jwollrath@web.de>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Tested-by: Julian Wollrath <jwollrath@web.de>
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Glue code that plugs the PCLMULQDQ accelerated CRC T10 DIF hash into the
crypto framework. The config CRYPTO_CRCT10DIF_PCLMUL should be turned
on to enable the feature. The crc_t10dif crypto library function will
use this faster algorithm when crct10dif_pclmul module is loaded.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Patch adds AVX2/AES-NI/x86-64 implementation of Camellia cipher, requiring
32 parallel blocks for input (512 bytes). Compared to AVX implementation, this
version is extended to use the 256-bit wide YMM registers. For AES-NI
instructions data is split to two 128-bit registers and merged afterwards.
Even with this additional handling, performance should be higher compared
to the AES-NI/AVX implementation.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Patch adds AVX2/x86-64 implementation of Serpent cipher, requiring 16 parallel
blocks for input (256 bytes). Implementation is based on the AVX implementation
and extends to use the 256-bit wide YMM registers. Since serpent does not use
table look-ups, this implementation should be close to two times faster than
the AVX implementation.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Patch adds AVX2/x86-64 implementation of Twofish cipher, requiring 16 parallel
blocks for input (256 bytes). Table look-ups are performed using vpgatherdd
instruction directly from vector registers and thus should be faster than
earlier implementations. Implementation also uses 256-bit wide YMM registers,
which should give additional speed up compared to the AVX implementation.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Patch adds AVX2/x86-64 implementation of Blowfish cipher, requiring 32 parallel
blocks for input (256 bytes). Table look-ups are performed using vpgatherdd
instruction directly from vector registers and thus should be faster than
earlier implementations.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add more optimized XTS code for aesni_intel in 64-bit mode, for smaller stack
usage and boost for speed.
tcrypt results, with Intel i5-2450M:
256-bit key
enc dec
16B 0.98x 0.99x
64B 0.64x 0.63x
256B 1.29x 1.32x
1024B 1.54x 1.58x
8192B 1.57x 1.60x
512-bit key
enc dec
16B 0.98x 0.99x
64B 0.60x 0.59x
256B 1.24x 1.25x
1024B 1.39x 1.42x
8192B 1.38x 1.42x
I chose not to optimize smaller than block size of 256 bytes, since XTS is
practically always used with data blocks of size 512 bytes. This is why
performance is reduced in tcrypt for 64 byte long blocks.
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add more optimized XTS code for camellia-aesni-avx, for smaller stack usage
and small boost for speed.
tcrypt results, with Intel i5-2450M:
enc dec
16B 1.10x 1.01x
64B 0.82x 0.77x
256B 1.14x 1.10x
1024B 1.17x 1.16x
8192B 1.10x 1.11x
Since XTS is practically always used with data blocks of size 512 bytes or
more, I chose to not make use of camellia-2way for block sized smaller than
256 bytes. This causes slower result in tcrypt for 64 bytes.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Change cast6-avx to use the new XTS code, for smaller stack usage and small
boost to performance.
tcrypt results, with Intel i5-2450M:
enc dec
16B 1.01x 1.01x
64B 1.01x 1.00x
256B 1.09x 1.02x
1024B 1.08x 1.06x
8192B 1.08x 1.07x
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Change twofish-avx to use the new XTS code, for smaller stack usage and small
boost to performance.
tcrypt results, with Intel i5-2450M:
enc dec
16B 1.03x 1.02x
64B 0.91x 0.91x
256B 1.10x 1.09x
1024B 1.12x 1.11x
8192B 1.12x 1.11x
Since XTS is practically always used with data blocks of size 512 bytes or
more, I chose to not make use of twofish-3way for block sized smaller than
128 bytes. This causes slower result in tcrypt for 64 bytes.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch adds AVX optimized XTS-mode helper functions/macros and converts
serpent-avx to use the new facilities. Benefits are slightly improved speed
and reduced stack usage as use of temporary IV-array is avoided.
tcrypt results, with Intel i5-2450M:
enc dec
16B 1.00x 1.00x
64B 1.00x 1.00x
256B 1.04x 1.06x
1024B 1.09x 1.09x
8192B 1.10x 1.09x
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Occurs when CONFIG_CRYPTO_CRC32C_INTEL=y and CONFIG_CRYPTO_CRC32C_INTEL=y.
Older versions of bintuils do not support the pclmulqdq instruction. The
PCLMULQDQ gas macro is used instead.
Signed-off-by: Sandy Wu <sandyw@twitter.com>
Cc: stable@vger.kernel.org # 3.8+
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
We added glue code and config options to create crypto
module that uses SSE/AVX/AVX2 optimized SHA512 x86_64 assembly routines.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Provides SHA512 x86_64 assembly routine optimized with SSE, AVX and
AVX2's RORX instructions. Speedup of 70% or more has been
measured over the generic implementation.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Provides SHA512 x86_64 assembly routine optimized with SSE and AVX instructions.
Speedup of 60% or more has been measured over the generic implementation.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Provides SHA512 x86_64 assembly routine optimized with SSSE3 instructions.
Speedup of 40% or more has been measured over the generic implementation.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
We added glue code and config options to create crypto
module that uses SSE/AVX/AVX2 optimized SHA256 x86_64 assembly routines.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Provides SHA256 x86_64 assembly routine optimized with SSE, AVX and
AVX2's RORX instructions. Speedup of 70% or more has been
measured over the generic implementation.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Provides SHA256 x86_64 assembly routine optimized with SSE and AVX instructions.
Speedup of 60% or more has been measured over the generic implementation.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Provides SHA256 x86_64 assembly routine optimized with SSSE3 instructions.
Speedup of 40% or more has been measured over the generic implementation.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
These modules require AVX support in assembler, so add new check to Makefile
for this.
Other option would be to use CONFIG_AS_AVX inside source files, but that would
result dummy/empty/no-fuctionality modules being created.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert,
The following patch update the stale link to the CRC32C white paper
that was referenced.
Tim
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Pull crypto update from Herbert Xu:
"Here is the crypto update for 3.9:
- Added accelerated implementation of crc32 using pclmulqdq.
- Added test vector for fcrypt.
- Added support for OMAP4/AM33XX cipher and hash.
- Fixed loose crypto_user input checks.
- Misc fixes"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (43 commits)
crypto: user - ensure user supplied strings are nul-terminated
crypto: user - fix empty string test in report API
crypto: user - fix info leaks in report API
crypto: caam - Added property fsl,sec-era in SEC4.0 device tree binding.
crypto: use ERR_CAST
crypto: atmel-aes - adjust duplicate test
crypto: crc32-pclmul - Kill warning on x86-32
crypto: x86/twofish - assembler clean-ups: use ENTRY/ENDPROC, localize jump labels
crypto: x86/sha1 - assembler clean-ups: use ENTRY/ENDPROC
crypto: x86/serpent - use ENTRY/ENDPROC for assember functions and localize jump targets
crypto: x86/salsa20 - assembler cleanup, use ENTRY/ENDPROC for assember functions and rename ECRYPT_* to salsa20_*
crypto: x86/ghash - assembler clean-up: use ENDPROC at end of assember functions
crypto: x86/crc32c - assembler clean-up: use ENTRY/ENDPROC
crypto: cast6-avx: use ENTRY()/ENDPROC() for assembler functions
crypto: cast5-avx: use ENTRY()/ENDPROC() for assembler functions and localize jump targets
crypto: camellia-x86_64/aes-ni: use ENTRY()/ENDPROC() for assembler functions and localize jump targets
crypto: blowfish-x86_64: use ENTRY()/ENDPROC() for assembler functions and localize jump targets
crypto: aesni-intel - add ENDPROC statements for assembler functions
crypto: x86/aes - assembler clean-ups: use ENTRY/ENDPROC, localize jump targets
crypto: testmgr - add test vector for fcrypt
...
This patch removes a gratuitous warning on x86-32:
arch/x86/crypto/crc32-pclmul_asm.S:87:2: warning: #warning Using 32bit code support [-Wcpp]
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinn@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch adds crc32 algorithms to shash crypto api. One is wrapper to
gerneric crc32_le function. Second is crc32 pclmulqdq implementation. It
use hardware provided PCLMULQDQ instruction to accelerate the CRC32 disposal.
This instruction present from Intel Westmere and AMD Bulldozer CPUs.
For intel core i5 I got 450MB/s for table implementation and 2100MB/s
for pclmulqdq implementation.
Signed-off-by: Alexander Boyko <alexander_boyko@xyratex.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
rfc3686 in CTR module is now able of using asynchronous ctr(aes) from
aesni-intel, so rfc3686(ctr(aes)) in aesni-intel is no longer needed.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
CAST5 and CAST6 both use same lookup tables, which can be moved shared module
'cast_common'.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Prepare camellia-x86_64 functions to be reused from AVX/AESNI implementation
module.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Introduce new assembler functions to avoid use temporary stack buffers in glue
code. This also allows use of vector instructions for xoring output in CTR and
CBC modes and construction of IVs for CTR mode.
ECB mode sees ~0.5% decrease in speed because added one extra function
call. CBC mode decryption and CTR mode benefit from vector operations
and gain ~5%.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Introduce new assembler functions to avoid use temporary stack buffers in glue
code. This also allows use of vector instructions for xoring output in CTR and
CBC modes and construction of IVs for CTR mode.
ECB mode sees ~0.5% decrease in speed because added one extra function
call. CBC mode decryption and CTR mode benefit from vector operations
and gain ~3%.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Introduce new assembler functions to avoid use temporary stack buffers in glue
code. This also allows use of vector instructions for xoring output in CTR and
CBC modes and construction of IVs for CTR mode.
ECB mode sees ~0.2% decrease in speed because added one extra function
call. CBC mode decryption and CTR mode benefit from vector operations
and gain ~3%.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Introduce new assembler functions to avoid use temporary stack buffers in
glue code. This also allows use of vector instructions for xoring output
in CTR and CBC modes and construction of IVs for CTR mode.
ECB mode sees ~0.5% decrease in speed because added one extra function
call. CBC mode decryption and CTR mode benefit from vector operations
and gain ~2%.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
'u128' currently used for CTR mode is on little-endian 'long long' swapped
and would require extra swap operations by SSE/AVX code. Use of le128
instead of u128 allows IV calculations to be done with vector registers
easier.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Calling convention for internal functions and 'asmlinkage' functions is
different on x86-32. Therefore do not directly cast aesni_enc as XTS tweak
function, but use wrapper function in between. Fixes crash with "XTS +
aesni_intel + x86-32" combination.
Cc: stable@vger.kernel.org
Reported-by: Krzysztof Kolasa <kkolasa@winsoft.pl>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch adds the crc_pcl function that calculates CRC32C checksum using the
PCLMULQDQ instruction on processors that support this feature. This will
provide speedup over using CRC32 instruction only.
The usage of PCLMULQDQ necessitate the invocation of kernel_fpu_begin and
kernel_fpu_end and incur some overhead. So the new crc_pcl function is only
invoked for buffer size of 512 bytes or more. Larger sized
buffers will expect to see greater speedup. This feature is best used coupled
with eager_fpu which reduces the kernel_fpu_begin/end overhead. For
buffer size of 1K the speedup is around 1.6x and for buffer size greater than
4K, the speedup is around 3x compared to original implementation in crc32c-intel
module. Test was performed on Sandy Bridge based platform with constant frequency
set for cpu.
A white paper detailing the algorithm can be found here:
http://download.intel.com/design/intarch/papers/323405.pdf
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch renames the crc32c-intel.c file to crc32c-intel_glue.c file
in preparation for linking with the new crc32c-pcl-intel-asm.S file,
which contains optimized crc32c calculation based on PCLMULQDQ
instruction.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Glue_helper incorrectly XORs new IV over old IV at end of CBC encryption
function when it should store. This causes CBC encryption to give
incorrect output on multi-page encryption requests.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
cast5/avx incorrectly XORs new IV over old IV at end of CBC encryption
function when it should store. This causes CBC encryption to give
incorrect output on multi-page encryption requests.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Fix "constant 0xXXXXXXXXXXXXXXXX is so big it's unsigned long" sparse warnings.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Patch replaces 'movb' instructions with 'movzbl' to break false register
dependencies, interleaves instructions better for out-of-order scheduling
and merges constant 16-bit rotation with round-key variable rotation.
tcrypt ECB results:
Intel Core i5-2450M:
size old-vs-new new-vs-generic old-vs-generic
enc dec enc dec enc dec
256 1.13x 1.19x 2.05x 2.17x 1.82x 1.82x
1k 1.18x 1.21x 2.26x 2.33x 1.93x 1.93x
8k 1.19x 1.19x 2.32x 2.33x 1.95x 1.95x
[v2]
- Do instruction interleaving another way to avoid adding new FPU<=>CPU
register moves as these cause performance drop on Bulldozer.
- Improvements to round-key variable rotation handling.
- Further interleaving improvements for better out-of-order scheduling.
Cc: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Patch replaces 'movb' instructions with 'movzbl' to break false register
dependencies, interleaves instructions better for out-of-order scheduling
and merges constant 16-bit rotation with round-key variable rotation.
tcrypt ECB results (128bit key):
Intel Core i5-2450M:
size old-vs-new new-vs-generic old-vs-generic
enc dec enc dec enc dec
256 1.18x 1.18x 2.45x 2.47x 2.08x 2.10x
1k 1.20x 1.20x 2.73x 2.73x 2.28x 2.28x
8k 1.20x 1.19x 2.73x 2.73x 2.28x 2.29x
[v2]
- Do instruction interleaving another way to avoid adding new FPU<=>CPU
register moves as these cause performance drop on Bulldozer.
- Improvements to round-key variable rotation handling.
- Further interleaving improvements for better out-of-order scheduling.
Cc: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Initialization of cra_list is currently mixed, most ciphers initialize this
field and most shashes do not. Initialization however is not needed at all
since cra_list is initialized/overwritten in __crypto_register_alg() with
list_add(). Therefore perform cleanup to remove all unneeded initializations
of this field in 'arch/x86/crypto/'.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The register %rdx is written, but never read till the end of the encryption
routine. Therefore let's delete the useless instruction.
Signed-off-by: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
kfree(new_key_mem) in rfc4106_set_key() should be called on malloced pointer,
not on aligned one, otherwise it can cause invalid pointer on free.
(Seen at least once when running tcrypt tests with debug kernel.)
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Move AES header to the new asm/crypto directory.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Move serpent crypto headers to the new asm/crypto/ directory.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Now that shared glue code is available, convert twofish-avx to use it.
Cc: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Now that shared glue code is available, convert twofish-x86_64-3way to use it.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Now that shared glue code is available, convert camellia-x86_64 to use it.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Now that shared glue code is available, convert serpent-avx to use it.
Cc: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Now that serpent-sse2 glue code has been made generic, it can be split to
separate module.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Block cipher implementations in arch/x86/crypto/ contain common glue code that
is currently duplicated in each module (camellia-x86_64, twofish-x86_64-3way,
twofish-avx, serpent-sse2 and serpent-avx). This patch prepares serpent-sse2
glue into generic glue code for all 128bit block ciphers to use in
arch/x86/crypto.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Remove duplicate ablk_* functions and make use of ablk_helper module instead.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Remove duplicate ablk_* functions and make use of ablk_helper module instead.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Move ablk-* functions to separate module to share common code between cipher
implementations.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Rename serpent-avx assembler functions so that they do not collide with
serpent-sse2 assembler functions when linking both versions in to same
kernel image.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Commit ea4d26ae ("raid5: add AVX optimized RAID5 checksumming")
introduced x86/ arch wide defines for AFLAGS and CFLAGS indicating AVX
support in binutils based on the same test we have in x86/crypto/ right
now. To minimize duplication drop our implementation in favour to the
one in x86/.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The 32 bit variant of cbc(aes) decrypt is using instructions requiring
128 bit aligned memory locations but fails to ensure this constraint in
the code. Fix this by loading the data into intermediate registers with
load unaligned instructions.
This fixes reported general protection faults related to aesni.
References: https://bugzilla.kernel.org/show_bug.cgi?id=43223
Reported-by: Daniel <garkein@mailueberfall.de>
Cc: stable@kernel.org [v2.6.39+]
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
ablk_*_init functions share more common code than what is currently in
ablk_init_common. Move all of the common code to ablk_init_common.
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Combine all crypto_alg to be registered and use new crypto_[un]register_algs
functions. Simplifies init/exit code and reduce object size.
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Pull crypto fixes from Herbert Xu:
"This fixes a build problem where two crypto modules both try to export
the same symbols (which shouldn't have been exported in the first
place)."
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: twofish-x86_64-3way - module init/exit functions should be static
crypto: camellia-x86_64 - module init/exit functions should be static
This caused conflict with camellia-x86_64 when compiled into kernel, same
function names and not static.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This caused conflict with twofish-x86_64-3way when compiled into kernel,
same function names and not static.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Pull kmap_atomic cleanup from Cong Wang.
It's been in -next for a long time, and it gets rid of the (no longer
used) second argument to k[un]map_atomic().
Fix up a few trivial conflicts in various drivers, and do an "evil
merge" to catch some new uses that have come in since Cong's tree.
* 'kmap_atomic' of git://github.com/congwang/linux: (59 commits)
feature-removal-schedule.txt: schedule the deprecated form of kmap_atomic() for removal
highmem: kill all __kmap_atomic() [swarren@nvidia.com: highmem: Fix ARM build break due to __kmap_atomic rename]
drbd: remove the second argument of k[un]map_atomic()
zcache: remove the second argument of k[un]map_atomic()
gma500: remove the second argument of k[un]map_atomic()
dm: remove the second argument of k[un]map_atomic()
tomoyo: remove the second argument of k[un]map_atomic()
sunrpc: remove the second argument of k[un]map_atomic()
rds: remove the second argument of k[un]map_atomic()
net: remove the second argument of k[un]map_atomic()
mm: remove the second argument of k[un]map_atomic()
lib: remove the second argument of k[un]map_atomic()
power: remove the second argument of k[un]map_atomic()
kdb: remove the second argument of k[un]map_atomic()
udf: remove the second argument of k[un]map_atomic()
ubifs: remove the second argument of k[un]map_atomic()
squashfs: remove the second argument of k[un]map_atomic()
reiserfs: remove the second argument of k[un]map_atomic()
ocfs2: remove the second argument of k[un]map_atomic()
ntfs: remove the second argument of k[un]map_atomic()
...
x86 has fast unaligned accesses, so twofish-x86_64/i586 does not need to enforce
alignment.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
x86 has fast unaligned accesses, so blowfish-x86_64 does not need to enforce
alignment.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Driver name in ablk_*_init functions can be constructed runtime. Therefore
use single function ablk_init to reduce object size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Combine all crypto_alg to be registered and use new crypto_[un]register_algs
functions. Simplifies init/exit code and reduce object size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Combine all crypto_alg to be registered and use new crypto_[un]register_algs
functions. Simplifies init/exit code and reduce object size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Combine all crypto_alg to be registered and use new crypto_[un]register_algs
functions. Simplifies init/exit code and reduce object size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
We cannot reach the line after 'return err'. Remove it.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
We can never reach the line just after the 'return 0'
statement. Remove it.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add support for auto-loading of crypto drivers based on cpuid features.
This enables auto-loading of the VIA and Intel specific drivers
for AES, hashing and CRCs.
Requires the earlier infrastructure patch to add x86 modinfo.
I kept it all in a single patch for now.
I dropped the printks when the driver cpuid doesn't match (imho
drivers never should print anything in such a case)
One drawback is that udev doesn't know if the drivers are used or not,
so they will be unconditionally loaded at boot up. That's better
than not loading them at all, like it often happens.
Cc: Dave Jones <davej@redhat.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Jen Axboe <axboe@kernel.dk>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Matrix transpose macro in serpent-sse2 uses mix of SSE2 integer and SSE floating
point instructions, which might cause performance penality on some CPUs.
This patch replaces transpose_4x4 macro with version that uses only SSE2
integer instructions.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Implementation in blowfish-x86_64 uses 64bit rotations which are slow on P4,
making blowfish-x86_64 slower than generic C implementation. Therefore
blacklist P4.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Performance of twofish-x86_64-3way on Intel Pentium 4 and Atom is lower than
of twofish-x86_64 module. So blacklist these CPUs.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Since LRW & XTS are selected by serpent-sse2, we don't need these #ifdefs
anymore.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Since LRW & XTS are selected by twofish-x86_64-3way, we don't need these
#ifdefs anymore.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
LRW/XTS patches for serpent-sse2 forgot to add this. CRYPTO_TFM_REQ_MAY_SLEEP
should be cleared as sleeping between kernel_fpu_begin()/kernel_fpu_end() is
not allowed.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits)
Revert "tracing: Include module.h in define_trace.h"
irq: don't put module.h into irq.h for tracking irqgen modules.
bluetooth: macroize two small inlines to avoid module.h
ip_vs.h: fix implicit use of module_get/module_put from module.h
nf_conntrack.h: fix up fallout from implicit moduleparam.h presence
include: replace linux/module.h with "struct module" wherever possible
include: convert various register fcns to macros to avoid include chaining
crypto.h: remove unused crypto_tfm_alg_modname() inline
uwb.h: fix implicit use of asm/page.h for PAGE_SIZE
pm_runtime.h: explicitly requires notifier.h
linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h
miscdevice.h: fix up implicit use of lists and types
stop_machine.h: fix implicit use of smp.h for smp_processor_id
of: fix implicit use of errno.h in include/linux/of.h
of_platform.h: delete needless include <linux/module.h>
acpi: remove module.h include from platform/aclinux.h
miscdevice.h: delete unnecessary inclusion of module.h
device_cgroup.h: delete needless include <linux/module.h>
net: sch_generic remove redundant use of <linux/module.h>
net: inet_timewait_sock doesnt need <linux/module.h>
...
Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in
- drivers/media/dvb/frontends/dibx000_common.c
- drivers/media/video/{mt9m111.c,ov6650.c}
- drivers/mfd/ab3550-core.c
- include/linux/dmaengine.h
These files aren't just exporting symbols -- they are also defining
a MODULE_LICENSE etc. so give them the full module.h file.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Patch adds 3-way parallel x86_64 assembly implementation of twofish as new
module. New assembler functions crypt data in three blocks chunks, improving
cipher performance on out-of-order CPUs.
Patch has been tested with tcrypt and automated filesystem tests.
Summary of the tcrypt benchmarks:
Twofish 3-way-asm vs twofish asm (128bit 8kb block ECB)
encrypt: 1.3x speed
decrypt: 1.3x speed
Twofish 3-way-asm vs twofish asm (128bit 8kb block CBC)
encrypt: 1.07x speed
decrypt: 1.4x speed
Twofish 3-way-asm vs twofish asm (128bit 8kb block CTR)
encrypt: 1.4x speed
Twofish 3-way-asm vs AES asm (128bit 8kb block ECB)
encrypt: 1.0x speed
decrypt: 1.0x speed
Twofish 3-way-asm vs AES asm (128bit 8kb block CBC)
encrypt: 0.84x speed
decrypt: 1.09x speed
Twofish 3-way-asm vs AES asm (128bit 8kb block CTR)
encrypt: 1.15x speed
Full output:
http://koti.mbnet.fi/axh/kernel/crypto/tcrypt-speed-twofish-3way-asm-x86_64.txthttp://koti.mbnet.fi/axh/kernel/crypto/tcrypt-speed-twofish-asm-x86_64.txthttp://koti.mbnet.fi/axh/kernel/crypto/tcrypt-speed-aes-asm-x86_64.txt
Tests were run on:
vendor_id : AuthenticAMD
cpu family : 16
model : 10
model name : AMD Phenom(tm) II X6 1055T Processor
Also userspace test were run on:
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E7330 @ 2.40GHz
stepping : 11
Userspace test results:
Encryption/decryption of twofish 3-way vs x86_64-asm on AMD Phenom II:
encrypt: 1.27x
decrypt: 1.25x
Encryption/decryption of twofish 3-way vs x86_64-asm on Intel Xeon E7330:
encrypt: 1.36x
decrypt: 1.36x
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This needed by 3-way twofish patch to be able to easily use one block
assembler functions. As glue code is shared between i586/x86_64 apply
change to i586 assembler too. Also export assembler functions for
3-way parallel twofish module.
CC: Joachim Fritschi <jfritschi@freenet.de>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch adds improved F-macro for 4-way parallel functions. With new
F-macro for 4-way parallel functions, blowfish sees ~15% improvement in
speed tests on AMD Phenom II (~5% on Intel Xeon E7330).
However when used in 1-way blowfish function new macro would be ~10%
slower than original, so old F-macro is kept for 1-way functions.
Patch cleans up old F-macro as it is no longer needed in 4-way part.
Patch also does register macro renaming to reduce stack usage.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Include <asm/aes.h> to pick up the declarations for crypto_aes_encrypt_x86
and crypto_aes_decrypt_x86 to quiet the sparse noise:
warning: symbol 'crypto_aes_encrypt_x86' was not declared. Should it be static?
warning: symbol 'crypto_aes_decrypt_x86' was not declared. Should it be static?
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Mandeep Singh Baines <msb@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Patch adds x86_64 assembly implementation of blowfish. Two set of assembler
functions are provided. First set is regular 'one-block at time'
encrypt/decrypt functions. Second is 'four-block at time' functions that
gain performance increase on out-of-order CPUs. Performance of 4-way
functions should be equal to 1-way functions with in-order CPUs.
Summary of the tcrypt benchmarks:
Blowfish assembler vs blowfish C (256bit 8kb block ECB)
encrypt: 2.2x speed
decrypt: 2.3x speed
Blowfish assembler vs blowfish C (256bit 8kb block CBC)
encrypt: 1.12x speed
decrypt: 2.5x speed
Blowfish assembler vs blowfish C (256bit 8kb block CTR)
encrypt: 2.5x speed
Full output:
http://koti.mbnet.fi/axh/kernel/crypto/tcrypt-speed-blowfish-asm-x86_64.txthttp://koti.mbnet.fi/axh/kernel/crypto/tcrypt-speed-blowfish-c-x86_64.txt
Tests were run on:
vendor_id : AuthenticAMD
cpu family : 16
model : 10
model name : AMD Phenom(tm) II X6 1055T Processor
stepping : 0
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This is an assembler implementation of the SHA1 algorithm using the
Supplemental SSE3 (SSSE3) instructions or, when available, the
Advanced Vector Extensions (AVX).
Testing with the tcrypt module shows the raw hash performance is up to
2.3 times faster than the C implementation, using 8k data blocks on a
Core 2 Duo T5500. For the smalest data set (16 byte) it is still 25%
faster.
Since this implementation uses SSE/YMM registers it cannot safely be
used in every situation, e.g. while an IRQ interrupts a kernel thread.
The implementation falls back to the generic SHA1 variant, if using
the SSE/YMM registers is not possible.
With this algorithm I was able to increase the throughput of a single
IPsec link from 344 Mbit/s to 464 Mbit/s on a Core 2 Quad CPU using
the SSSE3 variant -- a speedup of +34.8%.
Saving and restoring SSE/YMM state might make the actual throughput
fluctuate when there are FPU intensive userland applications running.
For example, meassuring the performance using iperf2 directly on the
machine under test gives wobbling numbers because iperf2 uses the FPU
for each packet to check if the reporting interval has expired (in the
above test I got min/max/avg: 402/484/464 MBit/s).
Using this algorithm on a IPsec gateway gives much more reasonable and
stable numbers, albeit not as high as in the directly connected case.
Here is the result from an RFC 2544 test run with a EXFO Packet Blazer
FTB-8510:
frame size sha1-generic sha1-ssse3 delta
64 byte 37.5 MBit/s 37.5 MBit/s 0.0%
128 byte 56.3 MBit/s 62.5 MBit/s +11.0%
256 byte 87.5 MBit/s 100.0 MBit/s +14.3%
512 byte 131.3 MBit/s 150.0 MBit/s +14.2%
1024 byte 162.5 MBit/s 193.8 MBit/s +19.3%
1280 byte 175.0 MBit/s 212.5 MBit/s +21.4%
1420 byte 175.0 MBit/s 218.7 MBit/s +25.0%
1518 byte 150.0 MBit/s 181.2 MBit/s +20.8%
The throughput for the largest frame size is lower than for the
previous size because the IP packets need to be fragmented in this
case to make there way through the IPsec tunnel.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Maxim Locktyukhin <maxim.locktyukhin@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Fix build error on i386 by moving function prototypes:
arch/x86/crypto/aesni-intel_glue.c: In function 'aesni_init':
arch/x86/crypto/aesni-intel_glue.c:1263: error: implicit declaration of function 'crypto_fpu_init'
arch/x86/crypto/aesni-intel_glue.c: In function 'aesni_exit':
arch/x86/crypto/aesni-intel_glue.c:1373: error: implicit declaration of function 'crypto_fpu_exit'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Loading fpu without aesni-intel does nothing. Loading aesni-intel
without fpu causes modes like xts to fail. (Unloading
aesni-intel will restore those modes.)
One solution would be to make aesni-intel depend on fpu, but it
seems cleaner to just combine the modules.
This is probably responsible for bugs like:
https://bugzilla.redhat.com/show_bug.cgi?id=589390
Signed-off-by: Andy Lutomirski <luto@mit.edu>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch fixes problem with packets that are not multiple of 64bytes.
Signed-off-by: Adrian Hoban <adrian.hoban@intel.com>
Signed-off-by: Aidan O'Mahony <aidan.o.mahony@intel.com>
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Flush TLB if PGD entry is changed in i386 PAE mode
x86, dumpstack: Correct stack dump info when frame pointer is available
x86: Clean up csum-copy_64.S a bit
x86: Fix common misspellings
x86: Fix misspelling and align params
x86: Use PentiumPro-optimized partial_csum() on VIA C7
They were generated by 'codespell' and then manually reviewed.
Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: trivial@kernel.org
LKML-Reference: <1300389856-1099-3-git-send-email-lucas.demarchi@profusion.mobi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Fix up previous patch that failed to properly fix mem leak in
rfc4106_set_hash_subkey(). This add-on patch; fixes the leak. moves
kfree() out of the error path, returns -ENOMEM rather than -EINVAL when
ablkcipher_request_alloc() fails.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
There's a small memory leak in
arch/x86/crypto/aesni-intel_glue.c::rfc4106_set_hash_subkey(). If the call
to kmalloc() fails and returns NULL then the memory allocated previously
by ablkcipher_request_alloc() is not freed when we leave the function.
I could have just added a call to ablkcipher_request_free() before we
return -ENOMEM, but that started to look too much like the code we
already had at the end of the function, so I chose instead to rework the
code a bit so that there are now a few labels at the end that we goto when
various allocations fail, so we don't have to repeat the same blocks of
code (this also reduces the object code size slightly).
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add missing header file:
arch/x86/crypto/ghash-clmulni-intel_glue.c:256: error: implicit declaration of function 'IS_ERR'
arch/x86/crypto/ghash-clmulni-intel_glue.c:257: error: implicit declaration of function 'PTR_ERR'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch fixes the problem with 2.16 binutils.
Signed-off-by: Aidan O'Mahony <aidan.o.mahony@intel.com>
Signed-off-by: Adrian Hoban <adrian.hoban@intel.com>
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Exclude AES-GCM code for x86-32 due to heavy usage of 64-bit registers
not available on x86-32.
While at it, fixed unregister order in aesni_exit().
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The AES-NI instructions are also available in legacy mode so the 32-bit
architecture may profit from those, too.
To illustrate the performance gain here's a short summary of a dm-crypt
speed test on a Core i7 M620 running at 2.67GHz comparing both assembler
implementations:
x86: i568 aes-ni delta
ECB, 256 bit: 93.8 MB/s 123.3 MB/s +31.4%
CBC, 256 bit: 84.8 MB/s 262.3 MB/s +209.3%
LRW, 256 bit: 108.6 MB/s 222.1 MB/s +104.5%
XTS, 256 bit: 105.0 MB/s 205.5 MB/s +95.7%
Additionally, due to some minor optimizations, the 64-bit version also
got a minor performance gain as seen below:
x86-64: old impl. new impl. delta
ECB, 256 bit: 121.1 MB/s 123.0 MB/s +1.5%
CBC, 256 bit: 285.3 MB/s 290.8 MB/s +1.9%
LRW, 256 bit: 263.7 MB/s 265.3 MB/s +0.6%
XTS, 256 bit: 251.1 MB/s 255.3 MB/s +1.7%
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Reviewed-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch adds an optimized RFC4106 AES-GCM implementation for 64-bit
kernels. It supports 128-bit AES key size. This leverages the crypto
AEAD interface type to facilitate a combined AES & GCM operation to
be implemented in assembly code. The assembly code leverages Intel(R)
AES New Instructions and the PCLMULQDQ instruction.
Signed-off-by: Adrian Hoban <adrian.hoban@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@intel.com>
Signed-off-by: Aidan O'Mahony <aidan.o.mahony@intel.com>
Signed-off-by: Erdinc Ozturk <erdinc.ozturk@intel.com>
Signed-off-by: James Guilford <james.guilford@intel.com>
Signed-off-by: Wajdi Feghali <wajdi.k.feghali@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Andrew Morton reported that AES-NI CTR optimization failed to compile
with gas 2.16.1, the error message is as follow:
arch/x86/crypto/aesni-intel_asm.S: Assembler messages:
arch/x86/crypto/aesni-intel_asm.S:752: Error: suffix or operands invalid for `movq'
arch/x86/crypto/aesni-intel_asm.S:753: Error: suffix or operands invalid for `movq'
To fix this, a gas macro is defined to assemble movq with 64bit
general purpose registers and XMM registers. The macro will generate
the raw .byte sequence for needed instructions.
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
To take advantage of the hardware pipeline implementation of AES-NI
instructions. CTR mode cryption is implemented in ASM to schedule
multiple AES-NI instructions one after another. This way, some latency
of AES-NI instruction can be eliminated.
Performance testing based on dm-crypt should 50% reduction of
ecryption/decryption time.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
In particular, several occurances of funny versions of 'success',
'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address',
'beginning', 'desirable', 'separate' and 'necessary' are fixed.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Joe Perches <joe@perches.com>
Cc: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Lbswap_mask, Lpoly and Ltwo_one should clearly belong to
.data section, not .text.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Old binutils do not support PCLMULQDQ-NI and PSHUFB, to make kernel
can be compiled by them, .byte code is used instead of assembly
instructions. But the readability and flexibility of raw .byte code is
not good.
So corresponding assembly instruction like gas macro is used instead.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Old binutils do not support AES-NI instructions, to make kernel can be
compiled by them, .byte code is used instead of AES-NI assembly
instructions. But the readability and flexibility of raw .byte code is
not good.
So corresponding assembly instruction like gas macro is used instead.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
When renaming kernel_fpu_using to irq_fpu_usable, the semantics of the
function is changed too, from mesuring whether kernel is using FPU,
that is, the FPU is NOT available, to measuring whether FPU is usable,
that is, the FPU is available.
But the usage of irq_fpu_usable in ghash-clmulni-intel_glue.c is not
changed accordingly. This patch fixes this.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Old gases don't have a clue what pshufb stands for so we have
to hard-code it for now.
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
When renaming kernel_fpu_using to irq_fpu_usable, the semantics of the
function is changed too, from mesuring whether kernel is using FPU,
that is, the FPU is NOT available, to measuring whether FPU is usable,
that is, the FPU is available.
But the usage of irq_fpu_usable in aesni-intel_glue.c is not changed
accordingly. This patch fixes this.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
PCLMULQDQ is used to accelerate the most time-consuming part of GHASH,
carry-less multiplication. More information about PCLMULQDQ can be
found at:
http://software.intel.com/en-us/articles/carry-less-multiplication-and-its-usage-for-computing-the-gcm-mode/
Because PCLMULQDQ changes XMM state, its usage must be enclosed with
kernel_fpu_begin/end, which can be used only in process context, the
acceleration is implemented as crypto_ahash. That is, request in soft
IRQ context will be defered to the cryptd kernel thread.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (22 commits)
x86: Fix code patching for paravirt-alternatives on 486
x86, msr: change msr-reg.o to obj-y, and export its symbols
x86: Use hard_smp_processor_id() to get apic id for AMD K8 cpus
x86, sched: Workaround broken sched domain creation for AMD Magny-Cours
x86, mcheck: Use correct cpumask for shared bank4
x86, cacheinfo: Fixup L3 cache information for AMD multi-node processors
x86: Fix CPU llc_shared_map information for AMD Magny-Cours
x86, msr: Fix msr-reg.S compilation with gas 2.16.1, on 32-bit too
x86: Move kernel_fpu_using to irq_fpu_usable in asm/i387.h
x86, msr: fix msr-reg.S compilation with gas 2.16.1
x86, msr: Export the register-setting MSR functions via /dev/*/msr
x86, msr: Create _on_cpu helpers for {rw,wr}msr_safe_regs()
x86, msr: Have the _safe MSR functions return -EIO, not -EFAULT
x86, msr: CFI annotations, cleanups for msr-reg.S
x86, asm: Make _ASM_EXTABLE() usable from assembly code
x86, asm: Add 32-bit versions of the combined CFI macros
x86, AMD: Disable wrongly set X86_FEATURE_LAHF_LM CPUID bit
x86, msr: Rewrite AMD rd/wrmsr variants
x86, msr: Add rd/wrmsr interfaces with preset registers
x86: add specific support for Intel Atom architecture
...
This function measures whether the FPU/SSE state can be touched in
interrupt context. If the interrupted code is in user space or has no
valid FPU/SSE context (CR0.TS == 1), FPU/SSE state can be used in IRQ
or soft_irq context too.
This is used by AES-NI accelerated AES implementation and PCLMULQDQ
accelerated GHASH implementation.
v3:
- Renamed to irq_fpu_usable to reflect the purpose of the function.
v2:
- Renamed to irq_is_fpu_using to reflect the real situation.
Signed-off-by: Huang Ying <ying.huang@intel.com>
CC: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
When the aes-intel module is loaded on a system that does not have the
AES instructions, it prints
Intel AES-NI instructions are not detected.
at level KERN_ERR. Since aes-intel is aliased to "aes" it will be tried
whenever anything uses AES and spam the console. This doesn't match
existing practice for how to handle "no hardware" when initializing a
module, so downgrade the message to KERN_INFO.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
kernel_fpu_begin/end used preempt_disable/enable, so sleep should be
prevented between kernel_fpu_begin/end.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Because AES-NI instructions will touch XMM state, corresponding code
must be enclosed within kernel_fpu_begin/end, which used
preempt_disable/enable. So sleep should be prevented between
kernel_fpu_begin/end.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Original implementation of aesni_cbc_dec do not save IV if input
length % 4 == 0. This will make decryption of next block failed.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Mathias Krause