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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2020-11-07 11:45:47 +0200 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2020-12-18 20:24:07 +0200 |
| commit | 5aeb091f911398217b2e9facb9bdeb05c63d7844 (patch) | |
| tree | 53dafb0c75ed82d5984c157f50c1ccf2696434c5 /cipher/cipher-internal.h | |
| parent | f4e63e92dc0b79633f48b11d292dd7bdf2752ede (diff) | |
| download | libgcrypt-5aeb091f911398217b2e9facb9bdeb05c63d7844.tar.gz | |
Add bulk AES-GCM acceleration for s390x/zSeries
* cipher/Makefile.am: Add 'asm-inline-s390x.h'.
* cipher/asm-inline-s390x.h: New.
* cipher/cipher-gcm.c [GCM_USE_S390X_CRYPTO] (ghash_s390x_kimd): New.
(setupM) [GCM_USE_S390X_CRYPTO]: Add setup for s390x GHASH function.
* cipher/cipher-internal.h (GCM_USE_S390X_CRYPTO): New.
* cipher/rijndael-s390x.c (u128_t, km_functions_e): Move to
'asm-inline-s390x.h'.
(aes_s390x_gcm_crypt): New.
(_gcry_aes_s390x_setup_acceleration): Use 'km_function_to_mask'; Add
setup for GCM bulk function.
--
This patch adds zSeries acceleration for GHASH and AES-GCM.
Benchmarks (z15, 5.2Ghz):
Before:
AES | nanosecs/byte mebibytes/sec cycles/byte
GCM enc | 2.64 ns/B 361.6 MiB/s 13.71 c/B
GCM dec | 2.64 ns/B 361.3 MiB/s 13.72 c/B
GCM auth | 2.58 ns/B 370.1 MiB/s 13.40 c/B
After:
AES | nanosecs/byte mebibytes/sec cycles/byte
GCM enc | 0.059 ns/B 16066 MiB/s 0.309 c/B
GCM dec | 0.059 ns/B 16114 MiB/s 0.308 c/B
GCM auth | 0.057 ns/B 16747 MiB/s 0.296 c/B
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'cipher/cipher-internal.h')
| -rw-r--r-- | cipher/cipher-internal.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/cipher/cipher-internal.h b/cipher/cipher-internal.h index d63b659a..59b36ce7 100644 --- a/cipher/cipher-internal.h +++ b/cipher/cipher-internal.h @@ -96,6 +96,12 @@ #endif #endif /* GCM_USE_ARM_NEON */ +/* GCM_USE_S390X_CRYPTO indicates whether to enable zSeries code. */ +#undef GCM_USE_S390X_CRYPTO +#if defined(HAVE_GCC_INLINE_ASM_S390X) +# define GCM_USE_S390X_CRYPTO 1 +#endif /* GCM_USE_S390X_CRYPTO */ + typedef unsigned int (*ghash_fn_t) (gcry_cipher_hd_t c, byte *result, const byte *buf, size_t nblocks); |