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2d16803c56
BLAKE2s has no currently known use as an shash. Just remove all of this
unnecessary plumbing. Removing this shash was something we talked about
back when we were making BLAKE2s a built-in, but I simply never got
around to doing it. So this completes that project.
Importantly, this fixs a bug in which the lib code depends on
crypto_simd_disabled_for_test, causing linker errors.
Also add more alignment tests to the selftests and compare SIMD and
non-SIMD compression functions, to make up for what we lose from
testmgr.c.
Reported-by: gaochao <gaochao49@huawei.com>
Cc: Eric Biggers <ebiggers@kernel.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: stable@vger.kernel.org
Fixes: 6048fdcc5f ("lib/crypto: blake2s: include as built-in")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR MIT
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/*
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* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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*/
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#include <crypto/internal/blake2s.h>
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#include <linux/types.h>
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#include <linux/jump_label.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/sizes.h>
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#include <asm/cpufeature.h>
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#include <asm/fpu/api.h>
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#include <asm/processor.h>
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#include <asm/simd.h>
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asmlinkage void blake2s_compress_ssse3(struct blake2s_state *state,
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const u8 *block, const size_t nblocks,
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const u32 inc);
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asmlinkage void blake2s_compress_avx512(struct blake2s_state *state,
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const u8 *block, const size_t nblocks,
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const u32 inc);
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static __ro_after_init DEFINE_STATIC_KEY_FALSE(blake2s_use_ssse3);
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static __ro_after_init DEFINE_STATIC_KEY_FALSE(blake2s_use_avx512);
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void blake2s_compress(struct blake2s_state *state, const u8 *block,
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size_t nblocks, const u32 inc)
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{
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/* SIMD disables preemption, so relax after processing each page. */
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BUILD_BUG_ON(SZ_4K / BLAKE2S_BLOCK_SIZE < 8);
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if (!static_branch_likely(&blake2s_use_ssse3) || !may_use_simd()) {
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blake2s_compress_generic(state, block, nblocks, inc);
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return;
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}
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do {
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const size_t blocks = min_t(size_t, nblocks,
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SZ_4K / BLAKE2S_BLOCK_SIZE);
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kernel_fpu_begin();
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if (IS_ENABLED(CONFIG_AS_AVX512) &&
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static_branch_likely(&blake2s_use_avx512))
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blake2s_compress_avx512(state, block, blocks, inc);
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else
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blake2s_compress_ssse3(state, block, blocks, inc);
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kernel_fpu_end();
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nblocks -= blocks;
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block += blocks * BLAKE2S_BLOCK_SIZE;
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} while (nblocks);
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}
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EXPORT_SYMBOL(blake2s_compress);
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static int __init blake2s_mod_init(void)
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{
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if (boot_cpu_has(X86_FEATURE_SSSE3))
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static_branch_enable(&blake2s_use_ssse3);
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if (IS_ENABLED(CONFIG_AS_AVX512) &&
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boot_cpu_has(X86_FEATURE_AVX) &&
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boot_cpu_has(X86_FEATURE_AVX2) &&
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boot_cpu_has(X86_FEATURE_AVX512F) &&
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boot_cpu_has(X86_FEATURE_AVX512VL) &&
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cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM |
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XFEATURE_MASK_AVX512, NULL))
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static_branch_enable(&blake2s_use_avx512);
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return 0;
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}
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module_init(blake2s_mod_init);
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MODULE_LICENSE("GPL v2");
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