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| author | Eric Biggers <ebiggers@kernel.org> | 2026-03-18 23:17:03 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@kernel.org> | 2026-03-23 13:15:13 -0700 |
| commit | b3b6e8f9b38911e9b30a5abe845541ade0797327 (patch) | |
| tree | 5df620d67e2a820b1c9eb2847967ae64753d061a /lib/crypto/x86 | |
| parent | 61f66c5216a961784b12307be60a25204525605c (diff) | |
| download | lwn-b3b6e8f9b38911e9b30a5abe845541ade0797327.tar.gz lwn-b3b6e8f9b38911e9b30a5abe845541ade0797327.zip | |
lib/crypto: gf128hash: Support GF128HASH_ARCH without all POLYVAL functions
Currently, some architectures (arm64 and x86) have optimized code for
both GHASH and POLYVAL. Others (arm, powerpc, riscv, and s390) have
optimized code only for GHASH. While POLYVAL support could be
implemented on these other architectures, until then we need to support
the case where arch-optimized functions are present only for GHASH.
Therefore, update the support for arch-optimized POLYVAL functions to
allow architectures to opt into supporting these functions individually.
The new meaning of CONFIG_CRYPTO_LIB_GF128HASH_ARCH is that some level
of GHASH and/or POLYVAL acceleration is provided.
Also provide an implementation of polyval_mul() based on
polyval_blocks_arch(), for when polyval_mul_arch() isn't implemented.
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20260319061723.1140720-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Diffstat (limited to 'lib/crypto/x86')
| -rw-r--r-- | lib/crypto/x86/gf128hash.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/crypto/x86/gf128hash.h b/lib/crypto/x86/gf128hash.h index fe506cf6431b..adf6147ea677 100644 --- a/lib/crypto/x86/gf128hash.h +++ b/lib/crypto/x86/gf128hash.h @@ -17,6 +17,7 @@ asmlinkage void polyval_blocks_pclmul_avx(struct polyval_elem *acc, const struct polyval_key *key, const u8 *data, size_t nblocks); +#define polyval_preparekey_arch polyval_preparekey_arch static void polyval_preparekey_arch(struct polyval_key *key, const u8 raw_key[POLYVAL_BLOCK_SIZE]) { @@ -40,6 +41,7 @@ static void polyval_preparekey_arch(struct polyval_key *key, } } +#define polyval_mul_arch polyval_mul_arch static void polyval_mul_arch(struct polyval_elem *acc, const struct polyval_key *key) { @@ -52,6 +54,7 @@ static void polyval_mul_arch(struct polyval_elem *acc, } } +#define polyval_blocks_arch polyval_blocks_arch static void polyval_blocks_arch(struct polyval_elem *acc, const struct polyval_key *key, const u8 *data, size_t nblocks) |