Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (C) 2018 Linaro Ltd <ard.biesheuvel@linaro.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <asm/simd.h>
|
|
#include <linux/cpufeature.h>
|
|
|
|
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_sha3);
|
|
|
|
asmlinkage size_t sha3_ce_transform(struct sha3_state *state, const u8 *data,
|
|
size_t nblocks, size_t block_size);
|
|
|
|
static void sha3_absorb_blocks(struct sha3_state *state, const u8 *data,
|
|
size_t nblocks, size_t block_size)
|
|
{
|
|
if (static_branch_likely(&have_sha3) && likely(may_use_simd())) {
|
|
do {
|
|
size_t rem;
|
|
|
|
scoped_ksimd()
|
|
rem = sha3_ce_transform(state, data, nblocks,
|
|
block_size);
|
|
data += (nblocks - rem) * block_size;
|
|
nblocks = rem;
|
|
} while (nblocks);
|
|
} else {
|
|
sha3_absorb_blocks_generic(state, data, nblocks, block_size);
|
|
}
|
|
}
|
|
|
|
static void sha3_keccakf(struct sha3_state *state)
|
|
{
|
|
if (static_branch_likely(&have_sha3) && likely(may_use_simd())) {
|
|
/*
|
|
* Passing zeroes into sha3_ce_transform() gives the plain
|
|
* Keccak-f permutation, which is what we want here. Any
|
|
* supported block size may be used. Use SHA3_512_BLOCK_SIZE
|
|
* since it's the shortest.
|
|
*/
|
|
static const u8 zeroes[SHA3_512_BLOCK_SIZE];
|
|
|
|
scoped_ksimd()
|
|
sha3_ce_transform(state, zeroes, 1, sizeof(zeroes));
|
|
} else {
|
|
sha3_keccakf_generic(state);
|
|
}
|
|
}
|
|
|
|
#define sha3_mod_init_arch sha3_mod_init_arch
|
|
static void sha3_mod_init_arch(void)
|
|
{
|
|
if (cpu_have_named_feature(SHA3))
|
|
static_branch_enable(&have_sha3);
|
|
}
|