Release 4.18 arch/x86/crypto/serpent_avx2_glue.c
/*
* Glue Code for x86_64/AVX2 assembler optimized version of Serpent
*
* Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/crypto.h>
#include <linux/err.h>
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <crypto/serpent.h>
#include <crypto/xts.h>
#include <asm/crypto/glue_helper.h>
#include <asm/crypto/serpent-avx.h>
#define SERPENT_AVX2_PARALLEL_BLOCKS 16
/* 16-way AVX2 parallel cipher functions */
asmlinkage void serpent_ecb_enc_16way(struct serpent_ctx *ctx, u8 *dst,
const u8 *src);
asmlinkage void serpent_ecb_dec_16way(struct serpent_ctx *ctx, u8 *dst,
const u8 *src);
asmlinkage void serpent_cbc_dec_16way(void *ctx, u128 *dst, const u128 *src);
asmlinkage void serpent_ctr_16way(void *ctx, u128 *dst, const u128 *src,
le128 *iv);
asmlinkage void serpent_xts_enc_16way(struct serpent_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
asmlinkage void serpent_xts_dec_16way(struct serpent_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
{
return __serpent_setkey(crypto_skcipher_ctx(tfm), key, keylen);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Biggers | 33 | 100.00% | 1 | 100.00% |
| Total | 33 | 100.00% | 1 | 100.00% |
static const struct common_glue_ctx serpent_enc = {
.num_funcs = 3,
.fpu_blocks_limit = 8,
.funcs = { {
.num_blocks = 16,
.fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_16way) }
}, {
.num_blocks = 8,
.fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_8way_avx) }
}, {
.num_blocks = 1,
.fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_encrypt) }
} }
};
static const struct common_glue_ctx serpent_ctr = {
.num_funcs = 3,
.fpu_blocks_limit = 8,
.funcs = { {
.num_blocks = 16,
.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_16way) }
}, {
.num_blocks = 8,
.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_8way_avx) }
}, {
.num_blocks = 1,
.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(__serpent_crypt_ctr) }
} }
};
static const struct common_glue_ctx serpent_enc_xts = {
.num_funcs = 3,
.fpu_blocks_limit = 8,
.funcs = { {
.num_blocks = 16,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_16way) }
}, {
.num_blocks = 8,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_8way_avx) }
}, {
.num_blocks = 1,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc) }
} }
};
static const struct common_glue_ctx serpent_dec = {
.num_funcs = 3,
.fpu_blocks_limit = 8,
.funcs = { {
.num_blocks = 16,
.fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_16way) }
}, {
.num_blocks = 8,
.fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_8way_avx) }
}, {
.num_blocks = 1,
.fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_decrypt) }
} }
};
static const struct common_glue_ctx serpent_dec_cbc = {
.num_funcs = 3,
.fpu_blocks_limit = 8,
.funcs = { {
.num_blocks = 16,
.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_16way) }
}, {
.num_blocks = 8,
.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_8way_avx) }
}, {
.num_blocks = 1,
.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__serpent_decrypt) }
} }
};
static const struct common_glue_ctx serpent_dec_xts = {
.num_funcs = 3,
.fpu_blocks_limit = 8,
.funcs = { {
.num_blocks = 16,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_16way) }
}, {
.num_blocks = 8,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_8way_avx) }
}, {
.num_blocks = 1,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec) }
} }
};
static int ecb_encrypt(struct skcipher_request *req)
{
return glue_ecb_req_128bit(&serpent_enc, req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 16 | 80.00% | 1 | 50.00% |
| Eric Biggers | 4 | 20.00% | 1 | 50.00% |
| Total | 20 | 100.00% | 2 | 100.00% |
static int ecb_decrypt(struct skcipher_request *req)
{
return glue_ecb_req_128bit(&serpent_dec, req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 16 | 80.00% | 1 | 50.00% |
| Eric Biggers | 4 | 20.00% | 1 | 50.00% |
| Total | 20 | 100.00% | 2 | 100.00% |
static int cbc_encrypt(struct skcipher_request *req)
{
return glue_cbc_encrypt_req_128bit(GLUE_FUNC_CAST(__serpent_encrypt),
req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 18 | 81.82% | 1 | 50.00% |
| Eric Biggers | 4 | 18.18% | 1 | 50.00% |
| Total | 22 | 100.00% | 2 | 100.00% |
static int cbc_decrypt(struct skcipher_request *req)
{
return glue_cbc_decrypt_req_128bit(&serpent_dec_cbc, req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 16 | 80.00% | 1 | 50.00% |
| Eric Biggers | 4 | 20.00% | 1 | 50.00% |
| Total | 20 | 100.00% | 2 | 100.00% |
static int ctr_crypt(struct skcipher_request *req)
{
return glue_ctr_req_128bit(&serpent_ctr, req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 16 | 80.00% | 1 | 50.00% |
| Eric Biggers | 4 | 20.00% | 1 | 50.00% |
| Total | 20 | 100.00% | 2 | 100.00% |
static int xts_encrypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
return glue_xts_req_128bit(&serpent_enc_xts, req,
XTS_TWEAK_CAST(__serpent_encrypt),
&ctx->tweak_ctx, &ctx->crypt_ctx);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 40 | 72.73% | 1 | 50.00% |
| Eric Biggers | 15 | 27.27% | 1 | 50.00% |
| Total | 55 | 100.00% | 2 | 100.00% |
static int xts_decrypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
return glue_xts_req_128bit(&serpent_dec_xts, req,
XTS_TWEAK_CAST(__serpent_encrypt),
&ctx->tweak_ctx, &ctx->crypt_ctx);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 37 | 67.27% | 1 | 33.33% |
| Eric Biggers | 18 | 32.73% | 2 | 66.67% |
| Total | 55 | 100.00% | 3 | 100.00% |
static struct skcipher_alg serpent_algs[] = {
{
.base.cra_name = "__ecb(serpent)",
.base.cra_driver_name = "__ecb-serpent-avx2",
.base.cra_priority = 600,
.base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = SERPENT_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct serpent_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = SERPENT_MIN_KEY_SIZE,
.max_keysize = SERPENT_MAX_KEY_SIZE,
.setkey = serpent_setkey_skcipher,
.encrypt = ecb_encrypt,
.decrypt = ecb_decrypt,
}, {
.base.cra_name = "__cbc(serpent)",
.base.cra_driver_name = "__cbc-serpent-avx2",
.base.cra_priority = 600,
.base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = SERPENT_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct serpent_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = SERPENT_MIN_KEY_SIZE,
.max_keysize = SERPENT_MAX_KEY_SIZE,
.ivsize = SERPENT_BLOCK_SIZE,
.setkey = serpent_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
}, {
.base.cra_name = "__ctr(serpent)",
.base.cra_driver_name = "__ctr-serpent-avx2",
.base.cra_priority = 600,
.base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = 1,
.base.cra_ctxsize = sizeof(struct serpent_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = SERPENT_MIN_KEY_SIZE,
.max_keysize = SERPENT_MAX_KEY_SIZE,
.ivsize = SERPENT_BLOCK_SIZE,
.chunksize = SERPENT_BLOCK_SIZE,
.setkey = serpent_setkey_skcipher,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
}, {
.base.cra_name = "__xts(serpent)",
.base.cra_driver_name = "__xts-serpent-avx2",
.base.cra_priority = 600,
.base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = SERPENT_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct serpent_xts_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = 2 * SERPENT_MIN_KEY_SIZE,
.max_keysize = 2 * SERPENT_MAX_KEY_SIZE,
.ivsize = SERPENT_BLOCK_SIZE,
.setkey = xts_serpent_setkey,
.encrypt = xts_encrypt,
.decrypt = xts_decrypt,
},
};
static struct simd_skcipher_alg *serpent_simd_algs[ARRAY_SIZE(serpent_algs)];
static int __init init(void)
{
const char *feature_name;
if (!boot_cpu_has(X86_FEATURE_AVX2) || !boot_cpu_has(X86_FEATURE_OSXSAVE)) {
pr_info("AVX2 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;
}
return simd_register_skciphers_compat(serpent_algs,
ARRAY_SIZE(serpent_algs),
serpent_simd_algs);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 34 | 43.59% | 1 | 14.29% |
| Ingo Molnar | 29 | 37.18% | 2 | 28.57% |
| Borislav Petkov | 8 | 10.26% | 2 | 28.57% |
| Eric Biggers | 5 | 6.41% | 1 | 14.29% |
| Dave Hansen | 2 | 2.56% | 1 | 14.29% |
| Total | 78 | 100.00% | 7 | 100.00% |
static void __exit fini(void)
{
simd_unregister_skciphers(serpent_algs, ARRAY_SIZE(serpent_algs),
serpent_simd_algs);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 16 | 76.19% | 1 | 50.00% |
| Eric Biggers | 5 | 23.81% | 1 | 50.00% |
| Total | 21 | 100.00% | 2 | 100.00% |
module_init(init);
module_exit(fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Serpent Cipher Algorithm, AVX2 optimized");
MODULE_ALIAS_CRYPTO("serpent");
MODULE_ALIAS_CRYPTO("serpent-asm");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 1146 | 82.09% | 1 | 10.00% |
| Eric Biggers | 205 | 14.68% | 2 | 20.00% |
| Ingo Molnar | 29 | 2.08% | 2 | 20.00% |
| Borislav Petkov | 8 | 0.57% | 2 | 20.00% |
| Stephan Mueller | 4 | 0.29% | 1 | 10.00% |
| Dave Hansen | 2 | 0.14% | 1 | 10.00% |
| Kees Cook | 2 | 0.14% | 1 | 10.00% |
| Total | 1396 | 100.00% | 10 | 100.00% |
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