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". v3 changes: - removed #ifdef in first patch 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 | 3 + 7 files changed, 827 insertions(+), 4 deletions(-) create mode 100644 arch/x86/crypto/sha1_ssse3_asm.S create mode 100644 arch/x86/crypto/sha1_ssse3_glue.c -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
