mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
a41b212946
This patch adds the NEON acceleration implementation of the SM3 hash algorithm. The main algorithm is based on SM3 NEON accelerated work of the libgcrypt project. Benchmark on T-Head Yitian-710 2.75 GHz, the data comes from the 326 mode of tcrypt, and compares the performance data of sm3-generic and sm3-ce. The abscissas are blocks of different lengths. The data is tabulated and the unit is Mb/s: update-size | 16 64 256 1024 2048 4096 8192 ---------------+-------------------------------------------------------- sm3-generic | 185.24 221.28 301.26 307.43 300.83 308.82 308.91 sm3-neon | 171.81 220.20 322.94 339.28 334.09 343.61 343.87 sm3-ce | 227.48 333.48 502.62 527.87 520.45 534.91 535.40 Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
104 lines
2.4 KiB
C
104 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* sm3-neon-glue.c - SM3 secure hash using NEON instructions
|
|
*
|
|
* Copyright (C) 2022 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
|
|
*/
|
|
|
|
#include <asm/neon.h>
|
|
#include <asm/simd.h>
|
|
#include <asm/unaligned.h>
|
|
#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/crypto.h>
|
|
#include <linux/module.h>
|
|
|
|
|
|
asmlinkage void sm3_neon_transform(struct sm3_state *sst, u8 const *src,
|
|
int blocks);
|
|
|
|
static int sm3_neon_update(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len)
|
|
{
|
|
if (!crypto_simd_usable()) {
|
|
sm3_update(shash_desc_ctx(desc), data, len);
|
|
return 0;
|
|
}
|
|
|
|
kernel_neon_begin();
|
|
sm3_base_do_update(desc, data, len, sm3_neon_transform);
|
|
kernel_neon_end();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sm3_neon_final(struct shash_desc *desc, u8 *out)
|
|
{
|
|
if (!crypto_simd_usable()) {
|
|
sm3_final(shash_desc_ctx(desc), out);
|
|
return 0;
|
|
}
|
|
|
|
kernel_neon_begin();
|
|
sm3_base_do_finalize(desc, sm3_neon_transform);
|
|
kernel_neon_end();
|
|
|
|
return sm3_base_finish(desc, out);
|
|
}
|
|
|
|
static int sm3_neon_finup(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len, u8 *out)
|
|
{
|
|
if (!crypto_simd_usable()) {
|
|
struct sm3_state *sctx = shash_desc_ctx(desc);
|
|
|
|
if (len)
|
|
sm3_update(sctx, data, len);
|
|
sm3_final(sctx, out);
|
|
return 0;
|
|
}
|
|
|
|
kernel_neon_begin();
|
|
if (len)
|
|
sm3_base_do_update(desc, data, len, sm3_neon_transform);
|
|
sm3_base_do_finalize(desc, sm3_neon_transform);
|
|
kernel_neon_end();
|
|
|
|
return sm3_base_finish(desc, out);
|
|
}
|
|
|
|
static struct shash_alg sm3_alg = {
|
|
.digestsize = SM3_DIGEST_SIZE,
|
|
.init = sm3_base_init,
|
|
.update = sm3_neon_update,
|
|
.final = sm3_neon_final,
|
|
.finup = sm3_neon_finup,
|
|
.descsize = sizeof(struct sm3_state),
|
|
.base.cra_name = "sm3",
|
|
.base.cra_driver_name = "sm3-neon",
|
|
.base.cra_blocksize = SM3_BLOCK_SIZE,
|
|
.base.cra_module = THIS_MODULE,
|
|
.base.cra_priority = 200,
|
|
};
|
|
|
|
static int __init sm3_neon_init(void)
|
|
{
|
|
return crypto_register_shash(&sm3_alg);
|
|
}
|
|
|
|
static void __exit sm3_neon_fini(void)
|
|
{
|
|
crypto_unregister_shash(&sm3_alg);
|
|
}
|
|
|
|
module_init(sm3_neon_init);
|
|
module_exit(sm3_neon_fini);
|
|
|
|
MODULE_DESCRIPTION("SM3 secure hash using NEON instructions");
|
|
MODULE_AUTHOR("Jussi Kivilinna <jussi.kivilinna@iki.fi>");
|
|
MODULE_AUTHOR("Tianjia Zhang <tianjia.zhang@linux.alibaba.com>");
|
|
MODULE_LICENSE("GPL v2");
|