mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 14:21:47 +00:00
1eb468b3c7
The minimum version of binutils for kernel build is currently 2.23 and
it doesn't support GFNI.
So, it fails to build the aria-avx2 if the old binutils is used.
The code using GFNI is an optional part of aria-avx2.
So, it disables GFNI part in it when the old binutils is used.
Fixes: 37d8d3ae7a ("crypto: x86/aria - implement aria-avx2")
Reported-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
255 lines
7.9 KiB
C
255 lines
7.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* Glue Code for the AVX2/AES-NI/GFNI assembler implementation of the ARIA Cipher
|
|
*
|
|
* Copyright (c) 2022 Taehee Yoo <ap420073@gmail.com>
|
|
*/
|
|
|
|
#include <crypto/algapi.h>
|
|
#include <crypto/internal/simd.h>
|
|
#include <crypto/aria.h>
|
|
#include <linux/crypto.h>
|
|
#include <linux/err.h>
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
|
|
#include "ecb_cbc_helpers.h"
|
|
#include "aria-avx.h"
|
|
|
|
asmlinkage void aria_aesni_avx2_encrypt_32way(const void *ctx, u8 *dst,
|
|
const u8 *src);
|
|
EXPORT_SYMBOL_GPL(aria_aesni_avx2_encrypt_32way);
|
|
asmlinkage void aria_aesni_avx2_decrypt_32way(const void *ctx, u8 *dst,
|
|
const u8 *src);
|
|
EXPORT_SYMBOL_GPL(aria_aesni_avx2_decrypt_32way);
|
|
asmlinkage void aria_aesni_avx2_ctr_crypt_32way(const void *ctx, u8 *dst,
|
|
const u8 *src,
|
|
u8 *keystream, u8 *iv);
|
|
EXPORT_SYMBOL_GPL(aria_aesni_avx2_ctr_crypt_32way);
|
|
#ifdef CONFIG_AS_GFNI
|
|
asmlinkage void aria_aesni_avx2_gfni_encrypt_32way(const void *ctx, u8 *dst,
|
|
const u8 *src);
|
|
EXPORT_SYMBOL_GPL(aria_aesni_avx2_gfni_encrypt_32way);
|
|
asmlinkage void aria_aesni_avx2_gfni_decrypt_32way(const void *ctx, u8 *dst,
|
|
const u8 *src);
|
|
EXPORT_SYMBOL_GPL(aria_aesni_avx2_gfni_decrypt_32way);
|
|
asmlinkage void aria_aesni_avx2_gfni_ctr_crypt_32way(const void *ctx, u8 *dst,
|
|
const u8 *src,
|
|
u8 *keystream, u8 *iv);
|
|
EXPORT_SYMBOL_GPL(aria_aesni_avx2_gfni_ctr_crypt_32way);
|
|
#endif /* CONFIG_AS_GFNI */
|
|
|
|
static struct aria_avx_ops aria_ops;
|
|
|
|
struct aria_avx2_request_ctx {
|
|
u8 keystream[ARIA_AESNI_AVX2_PARALLEL_BLOCK_SIZE];
|
|
};
|
|
|
|
static int ecb_do_encrypt(struct skcipher_request *req, const u32 *rkey)
|
|
{
|
|
ECB_WALK_START(req, ARIA_BLOCK_SIZE, ARIA_AESNI_PARALLEL_BLOCKS);
|
|
ECB_BLOCK(ARIA_AESNI_AVX2_PARALLEL_BLOCKS, aria_ops.aria_encrypt_32way);
|
|
ECB_BLOCK(ARIA_AESNI_PARALLEL_BLOCKS, aria_ops.aria_encrypt_16way);
|
|
ECB_BLOCK(1, aria_encrypt);
|
|
ECB_WALK_END();
|
|
}
|
|
|
|
static int ecb_do_decrypt(struct skcipher_request *req, const u32 *rkey)
|
|
{
|
|
ECB_WALK_START(req, ARIA_BLOCK_SIZE, ARIA_AESNI_PARALLEL_BLOCKS);
|
|
ECB_BLOCK(ARIA_AESNI_AVX2_PARALLEL_BLOCKS, aria_ops.aria_decrypt_32way);
|
|
ECB_BLOCK(ARIA_AESNI_PARALLEL_BLOCKS, aria_ops.aria_decrypt_16way);
|
|
ECB_BLOCK(1, aria_decrypt);
|
|
ECB_WALK_END();
|
|
}
|
|
|
|
static int aria_avx2_ecb_encrypt(struct skcipher_request *req)
|
|
{
|
|
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
|
|
struct aria_ctx *ctx = crypto_skcipher_ctx(tfm);
|
|
|
|
return ecb_do_encrypt(req, ctx->enc_key[0]);
|
|
}
|
|
|
|
static int aria_avx2_ecb_decrypt(struct skcipher_request *req)
|
|
{
|
|
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
|
|
struct aria_ctx *ctx = crypto_skcipher_ctx(tfm);
|
|
|
|
return ecb_do_decrypt(req, ctx->dec_key[0]);
|
|
}
|
|
|
|
static int aria_avx2_set_key(struct crypto_skcipher *tfm, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
return aria_set_key(&tfm->base, key, keylen);
|
|
}
|
|
|
|
static int aria_avx2_ctr_encrypt(struct skcipher_request *req)
|
|
{
|
|
struct aria_avx2_request_ctx *req_ctx = skcipher_request_ctx(req);
|
|
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
|
|
struct aria_ctx *ctx = crypto_skcipher_ctx(tfm);
|
|
struct skcipher_walk walk;
|
|
unsigned int nbytes;
|
|
int err;
|
|
|
|
err = skcipher_walk_virt(&walk, req, false);
|
|
|
|
while ((nbytes = walk.nbytes) > 0) {
|
|
const u8 *src = walk.src.virt.addr;
|
|
u8 *dst = walk.dst.virt.addr;
|
|
|
|
while (nbytes >= ARIA_AESNI_AVX2_PARALLEL_BLOCK_SIZE) {
|
|
kernel_fpu_begin();
|
|
aria_ops.aria_ctr_crypt_32way(ctx, dst, src,
|
|
&req_ctx->keystream[0],
|
|
walk.iv);
|
|
kernel_fpu_end();
|
|
dst += ARIA_AESNI_AVX2_PARALLEL_BLOCK_SIZE;
|
|
src += ARIA_AESNI_AVX2_PARALLEL_BLOCK_SIZE;
|
|
nbytes -= ARIA_AESNI_AVX2_PARALLEL_BLOCK_SIZE;
|
|
}
|
|
|
|
while (nbytes >= ARIA_AESNI_PARALLEL_BLOCK_SIZE) {
|
|
kernel_fpu_begin();
|
|
aria_ops.aria_ctr_crypt_16way(ctx, dst, src,
|
|
&req_ctx->keystream[0],
|
|
walk.iv);
|
|
kernel_fpu_end();
|
|
dst += ARIA_AESNI_PARALLEL_BLOCK_SIZE;
|
|
src += ARIA_AESNI_PARALLEL_BLOCK_SIZE;
|
|
nbytes -= ARIA_AESNI_PARALLEL_BLOCK_SIZE;
|
|
}
|
|
|
|
while (nbytes >= ARIA_BLOCK_SIZE) {
|
|
memcpy(&req_ctx->keystream[0], walk.iv, ARIA_BLOCK_SIZE);
|
|
crypto_inc(walk.iv, ARIA_BLOCK_SIZE);
|
|
|
|
aria_encrypt(ctx, &req_ctx->keystream[0],
|
|
&req_ctx->keystream[0]);
|
|
|
|
crypto_xor_cpy(dst, src, &req_ctx->keystream[0],
|
|
ARIA_BLOCK_SIZE);
|
|
dst += ARIA_BLOCK_SIZE;
|
|
src += ARIA_BLOCK_SIZE;
|
|
nbytes -= ARIA_BLOCK_SIZE;
|
|
}
|
|
|
|
if (walk.nbytes == walk.total && nbytes > 0) {
|
|
memcpy(&req_ctx->keystream[0], walk.iv,
|
|
ARIA_BLOCK_SIZE);
|
|
crypto_inc(walk.iv, ARIA_BLOCK_SIZE);
|
|
|
|
aria_encrypt(ctx, &req_ctx->keystream[0],
|
|
&req_ctx->keystream[0]);
|
|
|
|
crypto_xor_cpy(dst, src, &req_ctx->keystream[0],
|
|
nbytes);
|
|
dst += nbytes;
|
|
src += nbytes;
|
|
nbytes = 0;
|
|
}
|
|
err = skcipher_walk_done(&walk, nbytes);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int aria_avx2_init_tfm(struct crypto_skcipher *tfm)
|
|
{
|
|
crypto_skcipher_set_reqsize(tfm, sizeof(struct aria_avx2_request_ctx));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct skcipher_alg aria_algs[] = {
|
|
{
|
|
.base.cra_name = "__ecb(aria)",
|
|
.base.cra_driver_name = "__ecb-aria-avx2",
|
|
.base.cra_priority = 500,
|
|
.base.cra_flags = CRYPTO_ALG_INTERNAL,
|
|
.base.cra_blocksize = ARIA_BLOCK_SIZE,
|
|
.base.cra_ctxsize = sizeof(struct aria_ctx),
|
|
.base.cra_module = THIS_MODULE,
|
|
.min_keysize = ARIA_MIN_KEY_SIZE,
|
|
.max_keysize = ARIA_MAX_KEY_SIZE,
|
|
.setkey = aria_avx2_set_key,
|
|
.encrypt = aria_avx2_ecb_encrypt,
|
|
.decrypt = aria_avx2_ecb_decrypt,
|
|
}, {
|
|
.base.cra_name = "__ctr(aria)",
|
|
.base.cra_driver_name = "__ctr-aria-avx2",
|
|
.base.cra_priority = 500,
|
|
.base.cra_flags = CRYPTO_ALG_INTERNAL |
|
|
CRYPTO_ALG_SKCIPHER_REQSIZE_LARGE,
|
|
.base.cra_blocksize = 1,
|
|
.base.cra_ctxsize = sizeof(struct aria_ctx),
|
|
.base.cra_module = THIS_MODULE,
|
|
.min_keysize = ARIA_MIN_KEY_SIZE,
|
|
.max_keysize = ARIA_MAX_KEY_SIZE,
|
|
.ivsize = ARIA_BLOCK_SIZE,
|
|
.chunksize = ARIA_BLOCK_SIZE,
|
|
.setkey = aria_avx2_set_key,
|
|
.encrypt = aria_avx2_ctr_encrypt,
|
|
.decrypt = aria_avx2_ctr_encrypt,
|
|
.init = aria_avx2_init_tfm,
|
|
}
|
|
};
|
|
|
|
static struct simd_skcipher_alg *aria_simd_algs[ARRAY_SIZE(aria_algs)];
|
|
|
|
static int __init aria_avx2_init(void)
|
|
{
|
|
const char *feature_name;
|
|
|
|
if (!boot_cpu_has(X86_FEATURE_AVX) ||
|
|
!boot_cpu_has(X86_FEATURE_AVX2) ||
|
|
!boot_cpu_has(X86_FEATURE_AES) ||
|
|
!boot_cpu_has(X86_FEATURE_OSXSAVE)) {
|
|
pr_info("AVX2 or AES-NI instructions 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;
|
|
}
|
|
|
|
if (boot_cpu_has(X86_FEATURE_GFNI) && IS_ENABLED(CONFIG_AS_GFNI)) {
|
|
aria_ops.aria_encrypt_16way = aria_aesni_avx_gfni_encrypt_16way;
|
|
aria_ops.aria_decrypt_16way = aria_aesni_avx_gfni_decrypt_16way;
|
|
aria_ops.aria_ctr_crypt_16way = aria_aesni_avx_gfni_ctr_crypt_16way;
|
|
aria_ops.aria_encrypt_32way = aria_aesni_avx2_gfni_encrypt_32way;
|
|
aria_ops.aria_decrypt_32way = aria_aesni_avx2_gfni_decrypt_32way;
|
|
aria_ops.aria_ctr_crypt_32way = aria_aesni_avx2_gfni_ctr_crypt_32way;
|
|
} else {
|
|
aria_ops.aria_encrypt_16way = aria_aesni_avx_encrypt_16way;
|
|
aria_ops.aria_decrypt_16way = aria_aesni_avx_decrypt_16way;
|
|
aria_ops.aria_ctr_crypt_16way = aria_aesni_avx_ctr_crypt_16way;
|
|
aria_ops.aria_encrypt_32way = aria_aesni_avx2_encrypt_32way;
|
|
aria_ops.aria_decrypt_32way = aria_aesni_avx2_decrypt_32way;
|
|
aria_ops.aria_ctr_crypt_32way = aria_aesni_avx2_ctr_crypt_32way;
|
|
}
|
|
|
|
return simd_register_skciphers_compat(aria_algs,
|
|
ARRAY_SIZE(aria_algs),
|
|
aria_simd_algs);
|
|
}
|
|
|
|
static void __exit aria_avx2_exit(void)
|
|
{
|
|
simd_unregister_skciphers(aria_algs, ARRAY_SIZE(aria_algs),
|
|
aria_simd_algs);
|
|
}
|
|
|
|
module_init(aria_avx2_init);
|
|
module_exit(aria_avx2_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Taehee Yoo <ap420073@gmail.com>");
|
|
MODULE_DESCRIPTION("ARIA Cipher Algorithm, AVX2/AES-NI/GFNI optimized");
|
|
MODULE_ALIAS_CRYPTO("aria");
|
|
MODULE_ALIAS_CRYPTO("aria-aesni-avx2");
|