Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Jason A. Donenfeld | 486 | 92.75% | 3 | 50.00% |
Eric Biggers | 35 | 6.68% | 2 | 33.33% |
Herbert Xu | 3 | 0.57% | 1 | 16.67% |
Total | 524 | 6 |
// SPDX-License-Identifier: GPL-2.0 OR MIT /* * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */ #include <crypto/internal/blake2s.h> #include <crypto/internal/simd.h> #include <crypto/internal/hash.h> #include <linux/types.h> #include <linux/jump_label.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/sizes.h> #include <asm/cpufeature.h> #include <asm/fpu/api.h> #include <asm/processor.h> #include <asm/simd.h> asmlinkage void blake2s_compress_ssse3(struct blake2s_state *state, const u8 *block, const size_t nblocks, const u32 inc); asmlinkage void blake2s_compress_avx512(struct blake2s_state *state, const u8 *block, const size_t nblocks, const u32 inc); static __ro_after_init DEFINE_STATIC_KEY_FALSE(blake2s_use_ssse3); static __ro_after_init DEFINE_STATIC_KEY_FALSE(blake2s_use_avx512); void blake2s_compress_arch(struct blake2s_state *state, const u8 *block, size_t nblocks, const u32 inc) { /* SIMD disables preemption, so relax after processing each page. */ BUILD_BUG_ON(SZ_4K / BLAKE2S_BLOCK_SIZE < 8); if (!static_branch_likely(&blake2s_use_ssse3) || !crypto_simd_usable()) { blake2s_compress_generic(state, block, nblocks, inc); return; } do { const size_t blocks = min_t(size_t, nblocks, SZ_4K / BLAKE2S_BLOCK_SIZE); kernel_fpu_begin(); if (IS_ENABLED(CONFIG_AS_AVX512) && static_branch_likely(&blake2s_use_avx512)) blake2s_compress_avx512(state, block, blocks, inc); else blake2s_compress_ssse3(state, block, blocks, inc); kernel_fpu_end(); nblocks -= blocks; block += blocks * BLAKE2S_BLOCK_SIZE; } while (nblocks); } EXPORT_SYMBOL(blake2s_compress_arch); static int crypto_blake2s_update_x86(struct shash_desc *desc, const u8 *in, unsigned int inlen) { return crypto_blake2s_update(desc, in, inlen, blake2s_compress_arch); } static int crypto_blake2s_final_x86(struct shash_desc *desc, u8 *out) { return crypto_blake2s_final(desc, out, blake2s_compress_arch); } #define BLAKE2S_ALG(name, driver_name, digest_size) \ { \ .base.cra_name = name, \ .base.cra_driver_name = driver_name, \ .base.cra_priority = 200, \ .base.cra_flags = CRYPTO_ALG_OPTIONAL_KEY, \ .base.cra_blocksize = BLAKE2S_BLOCK_SIZE, \ .base.cra_ctxsize = sizeof(struct blake2s_tfm_ctx), \ .base.cra_module = THIS_MODULE, \ .digestsize = digest_size, \ .setkey = crypto_blake2s_setkey, \ .init = crypto_blake2s_init, \ .update = crypto_blake2s_update_x86, \ .final = crypto_blake2s_final_x86, \ .descsize = sizeof(struct blake2s_state), \ } static struct shash_alg blake2s_algs[] = { BLAKE2S_ALG("blake2s-128", "blake2s-128-x86", BLAKE2S_128_HASH_SIZE), BLAKE2S_ALG("blake2s-160", "blake2s-160-x86", BLAKE2S_160_HASH_SIZE), BLAKE2S_ALG("blake2s-224", "blake2s-224-x86", BLAKE2S_224_HASH_SIZE), BLAKE2S_ALG("blake2s-256", "blake2s-256-x86", BLAKE2S_256_HASH_SIZE), }; static int __init blake2s_mod_init(void) { if (!boot_cpu_has(X86_FEATURE_SSSE3)) return 0; static_branch_enable(&blake2s_use_ssse3); if (IS_ENABLED(CONFIG_AS_AVX512) && boot_cpu_has(X86_FEATURE_AVX) && boot_cpu_has(X86_FEATURE_AVX2) && boot_cpu_has(X86_FEATURE_AVX512F) && boot_cpu_has(X86_FEATURE_AVX512VL) && cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM | XFEATURE_MASK_AVX512, NULL)) static_branch_enable(&blake2s_use_avx512); return IS_REACHABLE(CONFIG_CRYPTO_HASH) ? crypto_register_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs)) : 0; } static void __exit blake2s_mod_exit(void) { if (IS_REACHABLE(CONFIG_CRYPTO_HASH) && boot_cpu_has(X86_FEATURE_SSSE3)) crypto_unregister_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs)); } module_init(blake2s_mod_init); module_exit(blake2s_mod_exit); MODULE_ALIAS_CRYPTO("blake2s-128"); MODULE_ALIAS_CRYPTO("blake2s-128-x86"); MODULE_ALIAS_CRYPTO("blake2s-160"); MODULE_ALIAS_CRYPTO("blake2s-160-x86"); MODULE_ALIAS_CRYPTO("blake2s-224"); MODULE_ALIAS_CRYPTO("blake2s-224-x86"); MODULE_ALIAS_CRYPTO("blake2s-256"); MODULE_ALIAS_CRYPTO("blake2s-256-x86"); MODULE_LICENSE("GPL v2");
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