https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: c9c3395d5e3dcc6daee66c6908354d47bf98cb0c authored by Linus Torvalds on 19 February 2023, 22:24:22 UTC
Linux 6.2
Linux 6.2
Tip revision: c9c3395
nhpoly1305-sse2-glue.c
// SPDX-License-Identifier: GPL-2.0
/*
* NHPoly1305 - ε-almost-∆-universal hash function for Adiantum
* (SSE2 accelerated version)
*
* Copyright 2018 Google LLC
*/
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <crypto/nhpoly1305.h>
#include <linux/module.h>
#include <linux/sizes.h>
#include <asm/simd.h>
asmlinkage void nh_sse2(const u32 *key, const u8 *message, size_t message_len,
__le64 hash[NH_NUM_PASSES]);
static int nhpoly1305_sse2_update(struct shash_desc *desc,
const u8 *src, unsigned int srclen)
{
if (srclen < 64 || !crypto_simd_usable())
return crypto_nhpoly1305_update(desc, src, srclen);
do {
unsigned int n = min_t(unsigned int, srclen, SZ_4K);
kernel_fpu_begin();
crypto_nhpoly1305_update_helper(desc, src, n, nh_sse2);
kernel_fpu_end();
src += n;
srclen -= n;
} while (srclen);
return 0;
}
static struct shash_alg nhpoly1305_alg = {
.base.cra_name = "nhpoly1305",
.base.cra_driver_name = "nhpoly1305-sse2",
.base.cra_priority = 200,
.base.cra_ctxsize = sizeof(struct nhpoly1305_key),
.base.cra_module = THIS_MODULE,
.digestsize = POLY1305_DIGEST_SIZE,
.init = crypto_nhpoly1305_init,
.update = nhpoly1305_sse2_update,
.final = crypto_nhpoly1305_final,
.setkey = crypto_nhpoly1305_setkey,
.descsize = sizeof(struct nhpoly1305_state),
};
static int __init nhpoly1305_mod_init(void)
{
if (!boot_cpu_has(X86_FEATURE_XMM2))
return -ENODEV;
return crypto_register_shash(&nhpoly1305_alg);
}
static void __exit nhpoly1305_mod_exit(void)
{
crypto_unregister_shash(&nhpoly1305_alg);
}
module_init(nhpoly1305_mod_init);
module_exit(nhpoly1305_mod_exit);
MODULE_DESCRIPTION("NHPoly1305 ε-almost-∆-universal hash function (SSE2-accelerated)");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Eric Biggers <ebiggers@google.com>");
MODULE_ALIAS_CRYPTO("nhpoly1305");
MODULE_ALIAS_CRYPTO("nhpoly1305-sse2");