mirror of
https://github.com/torvalds/linux.git
synced 2024-12-04 18:13:04 +00:00
81ff5d2cba
Pull crypto update from Herbert Xu: "API: - Add support for AEAD in simd - Add fuzz testing to testmgr - Add panic_on_fail module parameter to testmgr - Use per-CPU struct instead multiple variables in scompress - Change verify API for akcipher Algorithms: - Convert x86 AEAD algorithms over to simd - Forbid 2-key 3DES in FIPS mode - Add EC-RDSA (GOST 34.10) algorithm Drivers: - Set output IV with ctr-aes in crypto4xx - Set output IV in rockchip - Fix potential length overflow with hashing in sun4i-ss - Fix computation error with ctr in vmx - Add SM4 protected keys support in ccree - Remove long-broken mxc-scc driver - Add rfc4106(gcm(aes)) cipher support in cavium/nitrox" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (179 commits) crypto: ccree - use a proper le32 type for le32 val crypto: ccree - remove set but not used variable 'du_size' crypto: ccree - Make cc_sec_disable static crypto: ccree - fix spelling mistake "protedcted" -> "protected" crypto: caam/qi2 - generate hash keys in-place crypto: caam/qi2 - fix DMA mapping of stack memory crypto: caam/qi2 - fix zero-length buffer DMA mapping crypto: stm32/cryp - update to return iv_out crypto: stm32/cryp - remove request mutex protection crypto: stm32/cryp - add weak key check for DES crypto: atmel - remove set but not used variable 'alg_name' crypto: picoxcell - Use dev_get_drvdata() crypto: crypto4xx - get rid of redundant using_sd variable crypto: crypto4xx - use sync skcipher for fallback crypto: crypto4xx - fix cfb and ofb "overran dst buffer" issues crypto: crypto4xx - fix ctr-aes missing output IV crypto: ecrdsa - select ASN1 and OID_REGISTRY for EC-RDSA crypto: ux500 - use ccflags-y instead of CFLAGS_<basename>.o crypto: ccree - handle tee fips error during power management resume crypto: ccree - add function to handle cryptocell tee fips error ...
129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
/*
|
|
* Accelerated CRC-T10DIF using arm64 NEON and Crypto Extensions instructions
|
|
*
|
|
* Copyright (C) 2016 - 2017 Linaro Ltd <ard.biesheuvel@linaro.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/cpufeature.h>
|
|
#include <linux/crc-t10dif.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/string.h>
|
|
|
|
#include <crypto/internal/hash.h>
|
|
#include <crypto/internal/simd.h>
|
|
|
|
#include <asm/neon.h>
|
|
#include <asm/simd.h>
|
|
|
|
#define CRC_T10DIF_PMULL_CHUNK_SIZE 16U
|
|
|
|
asmlinkage u16 crc_t10dif_pmull_p8(u16 init_crc, const u8 *buf, size_t len);
|
|
asmlinkage u16 crc_t10dif_pmull_p64(u16 init_crc, const u8 *buf, size_t len);
|
|
|
|
static int crct10dif_init(struct shash_desc *desc)
|
|
{
|
|
u16 *crc = shash_desc_ctx(desc);
|
|
|
|
*crc = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int crct10dif_update_pmull_p8(struct shash_desc *desc, const u8 *data,
|
|
unsigned int length)
|
|
{
|
|
u16 *crc = shash_desc_ctx(desc);
|
|
|
|
if (length >= CRC_T10DIF_PMULL_CHUNK_SIZE && crypto_simd_usable()) {
|
|
kernel_neon_begin();
|
|
*crc = crc_t10dif_pmull_p8(*crc, data, length);
|
|
kernel_neon_end();
|
|
} else {
|
|
*crc = crc_t10dif_generic(*crc, data, length);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int crct10dif_update_pmull_p64(struct shash_desc *desc, const u8 *data,
|
|
unsigned int length)
|
|
{
|
|
u16 *crc = shash_desc_ctx(desc);
|
|
|
|
if (length >= CRC_T10DIF_PMULL_CHUNK_SIZE && crypto_simd_usable()) {
|
|
kernel_neon_begin();
|
|
*crc = crc_t10dif_pmull_p64(*crc, data, length);
|
|
kernel_neon_end();
|
|
} else {
|
|
*crc = crc_t10dif_generic(*crc, data, length);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int crct10dif_final(struct shash_desc *desc, u8 *out)
|
|
{
|
|
u16 *crc = shash_desc_ctx(desc);
|
|
|
|
*(u16 *)out = *crc;
|
|
return 0;
|
|
}
|
|
|
|
static struct shash_alg crc_t10dif_alg[] = {{
|
|
.digestsize = CRC_T10DIF_DIGEST_SIZE,
|
|
.init = crct10dif_init,
|
|
.update = crct10dif_update_pmull_p8,
|
|
.final = crct10dif_final,
|
|
.descsize = CRC_T10DIF_DIGEST_SIZE,
|
|
|
|
.base.cra_name = "crct10dif",
|
|
.base.cra_driver_name = "crct10dif-arm64-neon",
|
|
.base.cra_priority = 100,
|
|
.base.cra_blocksize = CRC_T10DIF_BLOCK_SIZE,
|
|
.base.cra_module = THIS_MODULE,
|
|
}, {
|
|
.digestsize = CRC_T10DIF_DIGEST_SIZE,
|
|
.init = crct10dif_init,
|
|
.update = crct10dif_update_pmull_p64,
|
|
.final = crct10dif_final,
|
|
.descsize = CRC_T10DIF_DIGEST_SIZE,
|
|
|
|
.base.cra_name = "crct10dif",
|
|
.base.cra_driver_name = "crct10dif-arm64-ce",
|
|
.base.cra_priority = 200,
|
|
.base.cra_blocksize = CRC_T10DIF_BLOCK_SIZE,
|
|
.base.cra_module = THIS_MODULE,
|
|
}};
|
|
|
|
static int __init crc_t10dif_mod_init(void)
|
|
{
|
|
if (cpu_have_named_feature(PMULL))
|
|
return crypto_register_shashes(crc_t10dif_alg,
|
|
ARRAY_SIZE(crc_t10dif_alg));
|
|
else
|
|
/* only register the first array element */
|
|
return crypto_register_shash(crc_t10dif_alg);
|
|
}
|
|
|
|
static void __exit crc_t10dif_mod_exit(void)
|
|
{
|
|
if (cpu_have_named_feature(PMULL))
|
|
crypto_unregister_shashes(crc_t10dif_alg,
|
|
ARRAY_SIZE(crc_t10dif_alg));
|
|
else
|
|
crypto_unregister_shash(crc_t10dif_alg);
|
|
}
|
|
|
|
module_cpu_feature_match(ASIMD, crc_t10dif_mod_init);
|
|
module_exit(crc_t10dif_mod_exit);
|
|
|
|
MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS_CRYPTO("crct10dif");
|
|
MODULE_ALIAS_CRYPTO("crct10dif-arm64-ce");
|