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aes-gcm-avx512.S is generated from OpenSSL 3.1 and implements AES-GCM. ossl_x86.c detects whether the CPU implements the required AVX512 instructions; if not, the ossl(4) module does not provide an AES-GCM implementation. The VAES implementation increases throughput for all buffer sizes in both directions, up to 2x for sufficiently large buffers. The "process" implementation is in two parts: a generic OCF layer in ossl_aes.c that calls a set of MD functions to do the heavy lifting. The intent there is to make it possible to add other implementations for other platforms, e.g., to reduce the diff required for D37421. A follow-up commit will add a fallback path to legacy AES-NI, so that ossl(4) can be used in preference to aesni(4) on all amd64 platforms. In the long term we would like to replace aesni(4) and armv8crypto(4) with ossl(4). Note, currently this implementation will not be selected by default since aesni(4) and ossl(4) return the same probe priority for crypto sessions, and the opencrypto framework selects the first registered implementation to break a tie. Since aesni(4) is compiled into the kernel, aesni(4) wins. A separate change may modify ossl(4) to have priority. Sponsored by: Stormshield Sponsored by: Klara, Inc. Reviewed by: jhb MFC after: 3 months Differential Revision: https://reviews.freebsd.org/D39783 |
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| .. | ||
| aesni | ||
| armv8 | ||
| blake2 | ||
| camellia | ||
| ccp | ||
| chacha20 | ||
| des | ||
| libsodium | ||
| openssl | ||
| rc4 | ||
| rijndael | ||
| sha2 | ||
| siphash | ||
| skein | ||
| via | ||
| chacha20_poly1305.c | ||
| chacha20_poly1305.h | ||
| curve25519.c | ||
| curve25519.h | ||
| intake.h | ||
| sha1.c | ||
| sha1.h | ||