| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| 340 | 94.44% | 1 | 50.00% | |
| 20 | 5.56% | 1 | 50.00% | |
| Total | 360 | 2 |
| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Tianjia Zhang | 340 | 94.44% | 1 | 50.00% |
| Herbert Xu | 20 | 5.56% | 1 | 50.00% |
| Total | 360 | 2 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * SM3 Secure Hash Algorithm, AVX assembler accelerated. * specified in: https://datatracker.ietf.org/doc/html/draft-sca-cfrg-sm3-02 * * Copyright (C) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <crypto/internal/hash.h> #include <crypto/internal/simd.h> #include <crypto/sm3.h> #include <crypto/sm3_base.h> #include <linux/cpufeature.h> #include <linux/kernel.h> #include <linux/module.h> asmlinkage void sm3_transform_avx(struct sm3_state *state, const u8 *data, int nblocks); static int sm3_avx_update(struct shash_desc *desc, const u8 *data, unsigned int len) { int remain; /* * Make sure struct sm3_state begins directly with the SM3 * 256-bit internal state, as this is what the asm functions expect. */ BUILD_BUG_ON(offsetof(struct sm3_state, state) != 0); kernel_fpu_begin(); remain = sm3_base_do_update_blocks(desc, data, len, sm3_transform_avx); kernel_fpu_end(); return remain; } static int sm3_avx_finup(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out) { kernel_fpu_begin(); sm3_base_do_finup(desc, data, len, sm3_transform_avx); kernel_fpu_end(); return sm3_base_finish(desc, out); } static struct shash_alg sm3_avx_alg = { .digestsize = SM3_DIGEST_SIZE, .init = sm3_base_init, .update = sm3_avx_update, .finup = sm3_avx_finup, .descsize = SM3_STATE_SIZE, .base = { .cra_name = "sm3", .cra_driver_name = "sm3-avx", .cra_priority = 300, .cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY | CRYPTO_AHASH_ALG_FINUP_MAX, .cra_blocksize = SM3_BLOCK_SIZE, .cra_module = THIS_MODULE, } }; static int __init sm3_avx_mod_init(void) { const char *feature_name; if (!boot_cpu_has(X86_FEATURE_AVX)) { pr_info("AVX instruction are not detected.\n"); return -ENODEV; } if (!boot_cpu_has(X86_FEATURE_BMI2)) { pr_info("BMI2 instruction are not detected.\n"); return -ENODEV; } if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, &feature_name)) { pr_info("CPU feature '%s' is not supported.\n", feature_name); return -ENODEV; } return crypto_register_shash(&sm3_avx_alg); } static void __exit sm3_avx_mod_exit(void) { crypto_unregister_shash(&sm3_avx_alg); } module_init(sm3_avx_mod_init); module_exit(sm3_avx_mod_exit); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Tianjia Zhang <tianjia.zhang@linux.alibaba.com>"); MODULE_DESCRIPTION("SM3 Secure Hash Algorithm, AVX assembler accelerated"); MODULE_ALIAS_CRYPTO("sm3"); MODULE_ALIAS_CRYPTO("sm3-avx");