[PATCH v2 0/2] crypto, x86: assembler implementation of SHA1

[Mathias Krause <minipli@googlemail.com>]

This patch series adds an assembler implementation for the SHA1 hash algorithm
for the x86-64 architecture. Its raw hash performance can be more than 2 times
faster than the generic C implementation. This gives a real world benefit for
IPsec with an throughput increase of up to +35%. For concrete numbers have a
look at the second patch.

This implementation is currently x86-64 only but might be ported to 32 bit with
some effort in a follow up patch. (I had no time to do this yet.)

Note: The SSSE3 is no typo, it's "Supplemental SSE3".

v2 changes:
- fixed typo in Makefile making AVX version unusable
- whitespace fixes for the .S file

Regards,
Mathias

Mathias Krause (2):
  crypto, sha1: export sha1_update for reuse
  crypto, x86: SSSE3 based SHA1 implementation for x86-64

 arch/x86/crypto/Makefile          |    8 +
 arch/x86/crypto/sha1_ssse3_asm.S  |  558 +++++++++++++++++++++++++++++++++++++
 arch/x86/crypto/sha1_ssse3_glue.c |  240 ++++++++++++++++
 arch/x86/include/asm/cpufeature.h |    3 +
 crypto/Kconfig                    |   10 +
 crypto/sha1_generic.c             |    9 +-
 include/crypto/sha.h              |    5 +
 7 files changed, 829 insertions(+), 4 deletions(-)
 create mode 100644 arch/x86/crypto/sha1_ssse3_asm.S
 create mode 100644 arch/x86/crypto/sha1_ssse3_glue.c