forked from luck/tmp_suning_uos_patched
eb7d6ba882
Rename static / file-local functions so that they do not conflict with the functions declared in crypto/sha256.h. This is a preparation patch for folding crypto/sha256.h into crypto/sha.h. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
434 lines
11 KiB
C
434 lines
11 KiB
C
/*
|
|
* Cryptographic API.
|
|
*
|
|
* Glue code for the SHA256 Secure Hash Algorithm assembler
|
|
* implementation using supplemental SSE3 / AVX / AVX2 instructions.
|
|
*
|
|
* This file is based on sha256_generic.c
|
|
*
|
|
* Copyright (C) 2013 Intel Corporation.
|
|
*
|
|
* Author:
|
|
* Tim Chen <tim.c.chen@linux.intel.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <crypto/internal/hash.h>
|
|
#include <crypto/internal/simd.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/cryptohash.h>
|
|
#include <linux/types.h>
|
|
#include <crypto/sha.h>
|
|
#include <crypto/sha256_base.h>
|
|
#include <linux/string.h>
|
|
#include <asm/simd.h>
|
|
|
|
asmlinkage void sha256_transform_ssse3(u32 *digest, const char *data,
|
|
u64 rounds);
|
|
typedef void (sha256_transform_fn)(u32 *digest, const char *data, u64 rounds);
|
|
|
|
static int _sha256_update(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len, sha256_transform_fn *sha256_xform)
|
|
{
|
|
struct sha256_state *sctx = shash_desc_ctx(desc);
|
|
|
|
if (!crypto_simd_usable() ||
|
|
(sctx->count % SHA256_BLOCK_SIZE) + len < SHA256_BLOCK_SIZE)
|
|
return crypto_sha256_update(desc, data, len);
|
|
|
|
/* make sure casting to sha256_block_fn() is safe */
|
|
BUILD_BUG_ON(offsetof(struct sha256_state, state) != 0);
|
|
|
|
kernel_fpu_begin();
|
|
sha256_base_do_update(desc, data, len,
|
|
(sha256_block_fn *)sha256_xform);
|
|
kernel_fpu_end();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sha256_finup(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len, u8 *out, sha256_transform_fn *sha256_xform)
|
|
{
|
|
if (!crypto_simd_usable())
|
|
return crypto_sha256_finup(desc, data, len, out);
|
|
|
|
kernel_fpu_begin();
|
|
if (len)
|
|
sha256_base_do_update(desc, data, len,
|
|
(sha256_block_fn *)sha256_xform);
|
|
sha256_base_do_finalize(desc, (sha256_block_fn *)sha256_xform);
|
|
kernel_fpu_end();
|
|
|
|
return sha256_base_finish(desc, out);
|
|
}
|
|
|
|
static int sha256_ssse3_update(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len)
|
|
{
|
|
return _sha256_update(desc, data, len, sha256_transform_ssse3);
|
|
}
|
|
|
|
static int sha256_ssse3_finup(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len, u8 *out)
|
|
{
|
|
return sha256_finup(desc, data, len, out, sha256_transform_ssse3);
|
|
}
|
|
|
|
/* Add padding and return the message digest. */
|
|
static int sha256_ssse3_final(struct shash_desc *desc, u8 *out)
|
|
{
|
|
return sha256_ssse3_finup(desc, NULL, 0, out);
|
|
}
|
|
|
|
static struct shash_alg sha256_ssse3_algs[] = { {
|
|
.digestsize = SHA256_DIGEST_SIZE,
|
|
.init = sha256_base_init,
|
|
.update = sha256_ssse3_update,
|
|
.final = sha256_ssse3_final,
|
|
.finup = sha256_ssse3_finup,
|
|
.descsize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha256",
|
|
.cra_driver_name = "sha256-ssse3",
|
|
.cra_priority = 150,
|
|
.cra_blocksize = SHA256_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
}, {
|
|
.digestsize = SHA224_DIGEST_SIZE,
|
|
.init = sha224_base_init,
|
|
.update = sha256_ssse3_update,
|
|
.final = sha256_ssse3_final,
|
|
.finup = sha256_ssse3_finup,
|
|
.descsize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha224",
|
|
.cra_driver_name = "sha224-ssse3",
|
|
.cra_priority = 150,
|
|
.cra_blocksize = SHA224_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
} };
|
|
|
|
static int register_sha256_ssse3(void)
|
|
{
|
|
if (boot_cpu_has(X86_FEATURE_SSSE3))
|
|
return crypto_register_shashes(sha256_ssse3_algs,
|
|
ARRAY_SIZE(sha256_ssse3_algs));
|
|
return 0;
|
|
}
|
|
|
|
static void unregister_sha256_ssse3(void)
|
|
{
|
|
if (boot_cpu_has(X86_FEATURE_SSSE3))
|
|
crypto_unregister_shashes(sha256_ssse3_algs,
|
|
ARRAY_SIZE(sha256_ssse3_algs));
|
|
}
|
|
|
|
#ifdef CONFIG_AS_AVX
|
|
asmlinkage void sha256_transform_avx(u32 *digest, const char *data,
|
|
u64 rounds);
|
|
|
|
static int sha256_avx_update(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len)
|
|
{
|
|
return _sha256_update(desc, data, len, sha256_transform_avx);
|
|
}
|
|
|
|
static int sha256_avx_finup(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len, u8 *out)
|
|
{
|
|
return sha256_finup(desc, data, len, out, sha256_transform_avx);
|
|
}
|
|
|
|
static int sha256_avx_final(struct shash_desc *desc, u8 *out)
|
|
{
|
|
return sha256_avx_finup(desc, NULL, 0, out);
|
|
}
|
|
|
|
static struct shash_alg sha256_avx_algs[] = { {
|
|
.digestsize = SHA256_DIGEST_SIZE,
|
|
.init = sha256_base_init,
|
|
.update = sha256_avx_update,
|
|
.final = sha256_avx_final,
|
|
.finup = sha256_avx_finup,
|
|
.descsize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha256",
|
|
.cra_driver_name = "sha256-avx",
|
|
.cra_priority = 160,
|
|
.cra_blocksize = SHA256_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
}, {
|
|
.digestsize = SHA224_DIGEST_SIZE,
|
|
.init = sha224_base_init,
|
|
.update = sha256_avx_update,
|
|
.final = sha256_avx_final,
|
|
.finup = sha256_avx_finup,
|
|
.descsize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha224",
|
|
.cra_driver_name = "sha224-avx",
|
|
.cra_priority = 160,
|
|
.cra_blocksize = SHA224_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
} };
|
|
|
|
static bool avx_usable(void)
|
|
{
|
|
if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL)) {
|
|
if (boot_cpu_has(X86_FEATURE_AVX))
|
|
pr_info("AVX detected but unusable.\n");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static int register_sha256_avx(void)
|
|
{
|
|
if (avx_usable())
|
|
return crypto_register_shashes(sha256_avx_algs,
|
|
ARRAY_SIZE(sha256_avx_algs));
|
|
return 0;
|
|
}
|
|
|
|
static void unregister_sha256_avx(void)
|
|
{
|
|
if (avx_usable())
|
|
crypto_unregister_shashes(sha256_avx_algs,
|
|
ARRAY_SIZE(sha256_avx_algs));
|
|
}
|
|
|
|
#else
|
|
static inline int register_sha256_avx(void) { return 0; }
|
|
static inline void unregister_sha256_avx(void) { }
|
|
#endif
|
|
|
|
#if defined(CONFIG_AS_AVX2) && defined(CONFIG_AS_AVX)
|
|
asmlinkage void sha256_transform_rorx(u32 *digest, const char *data,
|
|
u64 rounds);
|
|
|
|
static int sha256_avx2_update(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len)
|
|
{
|
|
return _sha256_update(desc, data, len, sha256_transform_rorx);
|
|
}
|
|
|
|
static int sha256_avx2_finup(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len, u8 *out)
|
|
{
|
|
return sha256_finup(desc, data, len, out, sha256_transform_rorx);
|
|
}
|
|
|
|
static int sha256_avx2_final(struct shash_desc *desc, u8 *out)
|
|
{
|
|
return sha256_avx2_finup(desc, NULL, 0, out);
|
|
}
|
|
|
|
static struct shash_alg sha256_avx2_algs[] = { {
|
|
.digestsize = SHA256_DIGEST_SIZE,
|
|
.init = sha256_base_init,
|
|
.update = sha256_avx2_update,
|
|
.final = sha256_avx2_final,
|
|
.finup = sha256_avx2_finup,
|
|
.descsize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha256",
|
|
.cra_driver_name = "sha256-avx2",
|
|
.cra_priority = 170,
|
|
.cra_blocksize = SHA256_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
}, {
|
|
.digestsize = SHA224_DIGEST_SIZE,
|
|
.init = sha224_base_init,
|
|
.update = sha256_avx2_update,
|
|
.final = sha256_avx2_final,
|
|
.finup = sha256_avx2_finup,
|
|
.descsize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha224",
|
|
.cra_driver_name = "sha224-avx2",
|
|
.cra_priority = 170,
|
|
.cra_blocksize = SHA224_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
} };
|
|
|
|
static bool avx2_usable(void)
|
|
{
|
|
if (avx_usable() && boot_cpu_has(X86_FEATURE_AVX2) &&
|
|
boot_cpu_has(X86_FEATURE_BMI2))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static int register_sha256_avx2(void)
|
|
{
|
|
if (avx2_usable())
|
|
return crypto_register_shashes(sha256_avx2_algs,
|
|
ARRAY_SIZE(sha256_avx2_algs));
|
|
return 0;
|
|
}
|
|
|
|
static void unregister_sha256_avx2(void)
|
|
{
|
|
if (avx2_usable())
|
|
crypto_unregister_shashes(sha256_avx2_algs,
|
|
ARRAY_SIZE(sha256_avx2_algs));
|
|
}
|
|
|
|
#else
|
|
static inline int register_sha256_avx2(void) { return 0; }
|
|
static inline void unregister_sha256_avx2(void) { }
|
|
#endif
|
|
|
|
#ifdef CONFIG_AS_SHA256_NI
|
|
asmlinkage void sha256_ni_transform(u32 *digest, const char *data,
|
|
u64 rounds); /*unsigned int rounds);*/
|
|
|
|
static int sha256_ni_update(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len)
|
|
{
|
|
return _sha256_update(desc, data, len, sha256_ni_transform);
|
|
}
|
|
|
|
static int sha256_ni_finup(struct shash_desc *desc, const u8 *data,
|
|
unsigned int len, u8 *out)
|
|
{
|
|
return sha256_finup(desc, data, len, out, sha256_ni_transform);
|
|
}
|
|
|
|
static int sha256_ni_final(struct shash_desc *desc, u8 *out)
|
|
{
|
|
return sha256_ni_finup(desc, NULL, 0, out);
|
|
}
|
|
|
|
static struct shash_alg sha256_ni_algs[] = { {
|
|
.digestsize = SHA256_DIGEST_SIZE,
|
|
.init = sha256_base_init,
|
|
.update = sha256_ni_update,
|
|
.final = sha256_ni_final,
|
|
.finup = sha256_ni_finup,
|
|
.descsize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha256",
|
|
.cra_driver_name = "sha256-ni",
|
|
.cra_priority = 250,
|
|
.cra_blocksize = SHA256_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
}, {
|
|
.digestsize = SHA224_DIGEST_SIZE,
|
|
.init = sha224_base_init,
|
|
.update = sha256_ni_update,
|
|
.final = sha256_ni_final,
|
|
.finup = sha256_ni_finup,
|
|
.descsize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha224",
|
|
.cra_driver_name = "sha224-ni",
|
|
.cra_priority = 250,
|
|
.cra_blocksize = SHA224_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
} };
|
|
|
|
static int register_sha256_ni(void)
|
|
{
|
|
if (boot_cpu_has(X86_FEATURE_SHA_NI))
|
|
return crypto_register_shashes(sha256_ni_algs,
|
|
ARRAY_SIZE(sha256_ni_algs));
|
|
return 0;
|
|
}
|
|
|
|
static void unregister_sha256_ni(void)
|
|
{
|
|
if (boot_cpu_has(X86_FEATURE_SHA_NI))
|
|
crypto_unregister_shashes(sha256_ni_algs,
|
|
ARRAY_SIZE(sha256_ni_algs));
|
|
}
|
|
|
|
#else
|
|
static inline int register_sha256_ni(void) { return 0; }
|
|
static inline void unregister_sha256_ni(void) { }
|
|
#endif
|
|
|
|
static int __init sha256_ssse3_mod_init(void)
|
|
{
|
|
if (register_sha256_ssse3())
|
|
goto fail;
|
|
|
|
if (register_sha256_avx()) {
|
|
unregister_sha256_ssse3();
|
|
goto fail;
|
|
}
|
|
|
|
if (register_sha256_avx2()) {
|
|
unregister_sha256_avx();
|
|
unregister_sha256_ssse3();
|
|
goto fail;
|
|
}
|
|
|
|
if (register_sha256_ni()) {
|
|
unregister_sha256_avx2();
|
|
unregister_sha256_avx();
|
|
unregister_sha256_ssse3();
|
|
goto fail;
|
|
}
|
|
|
|
return 0;
|
|
fail:
|
|
return -ENODEV;
|
|
}
|
|
|
|
static void __exit sha256_ssse3_mod_fini(void)
|
|
{
|
|
unregister_sha256_ni();
|
|
unregister_sha256_avx2();
|
|
unregister_sha256_avx();
|
|
unregister_sha256_ssse3();
|
|
}
|
|
|
|
module_init(sha256_ssse3_mod_init);
|
|
module_exit(sha256_ssse3_mod_fini);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm, Supplemental SSE3 accelerated");
|
|
|
|
MODULE_ALIAS_CRYPTO("sha256");
|
|
MODULE_ALIAS_CRYPTO("sha256-ssse3");
|
|
MODULE_ALIAS_CRYPTO("sha256-avx");
|
|
MODULE_ALIAS_CRYPTO("sha256-avx2");
|
|
MODULE_ALIAS_CRYPTO("sha224");
|
|
MODULE_ALIAS_CRYPTO("sha224-ssse3");
|
|
MODULE_ALIAS_CRYPTO("sha224-avx");
|
|
MODULE_ALIAS_CRYPTO("sha224-avx2");
|
|
#ifdef CONFIG_AS_SHA256_NI
|
|
MODULE_ALIAS_CRYPTO("sha256-ni");
|
|
MODULE_ALIAS_CRYPTO("sha224-ni");
|
|
#endif
|