Release 4.18 arch/x86/crypto/cast6_avx_glue.c
/*
* Glue Code for the AVX assembler implemention of the Cast6 Cipher
*
* Copyright (C) 2012 Johannes Goetzfried
* <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
*
* Copyright © 2013 Jussi Kivilinna <jussi.kivilinna@iki.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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/crypto.h>
#include <linux/err.h>
#include <crypto/algapi.h>
#include <crypto/cast6.h>
#include <crypto/internal/simd.h>
#include <crypto/xts.h>
#include <asm/crypto/glue_helper.h>
#define CAST6_PARALLEL_BLOCKS 8
asmlinkage void cast6_ecb_enc_8way(struct cast6_ctx *ctx, u8 *dst,
const u8 *src);
asmlinkage void cast6_ecb_dec_8way(struct cast6_ctx *ctx, u8 *dst,
const u8 *src);
asmlinkage void cast6_cbc_dec_8way(struct cast6_ctx *ctx, u8 *dst,
const u8 *src);
asmlinkage void cast6_ctr_8way(struct cast6_ctx *ctx, u8 *dst, const u8 *src,
le128 *iv);
asmlinkage void cast6_xts_enc_8way(struct cast6_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
asmlinkage void cast6_xts_dec_8way(struct cast6_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
static int cast6_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
{
return cast6_setkey(&tfm->base, key, keylen);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Biggers | 33 | 100.00% | 1 | 100.00% |
| Total | 33 | 100.00% | 1 | 100.00% |
static void cast6_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv)
{
glue_xts_crypt_128bit_one(ctx, dst, src, iv,
GLUE_FUNC_CAST(__cast6_encrypt));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 39 | 100.00% | 1 | 100.00% |
| Total | 39 | 100.00% | 1 | 100.00% |
static void cast6_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv)
{
glue_xts_crypt_128bit_one(ctx, dst, src, iv,
GLUE_FUNC_CAST(__cast6_decrypt));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jussi Kivilinna | 39 | 100.00% | 1 | 100.00% |
| Total | 39 | 100.00% | 1 | 100.00% |
static void cast6_crypt_ctr(void *ctx, u128 *dst, const u128 *src, le128 *iv)
{
be128 ctrblk;
le128_to_be128(&ctrblk, iv);
le128_inc(iv);
__cast6_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk);
u128_xor(dst, src, (u128 *)&ctrblk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Johannes Goetzfried | 69 | 95.83% | 1 | 50.00% |
| Jussi Kivilinna | 3 | 4.17% | 1 | 50.00% |
| Total | 72 | 100.00% | 2 | 100.00% |
static const struct common_glue_ctx cast6_enc = {
.num_funcs = 2,
.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAST6_PARALLEL_BLOCKS,
.fn_u = { .ecb = GLUE_FUNC_CAST(cast6_ecb_enc_8way) }
}, {
.num_blocks = 1,
.fn_u = { .ecb = GLUE_FUNC_CAST(__cast6_encrypt) }
} }
};
static const struct common_glue_ctx cast6_ctr = {
.num_funcs = 2,
.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAST6_PARALLEL_BLOCKS,
.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(cast6_ctr_8way) }
}, {
.num_blocks = 1,
.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(cast6_crypt_ctr) }
} }
};
static const struct common_glue_ctx cast6_enc_xts = {
.num_funcs = 2,
.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAST6_PARALLEL_BLOCKS,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(cast6_xts_enc_8way) }
}, {
.num_blocks = 1,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(cast6_xts_enc) }
} }
};
static const struct common_glue_ctx cast6_dec = {
.num_funcs = 2,
.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAST6_PARALLEL_BLOCKS,
.fn_u = { .ecb = GLUE_FUNC_CAST(cast6_ecb_dec_8way) }
}, {
.num_blocks = 1,
.fn_u = { .ecb = GLUE_FUNC_CAST(__cast6_decrypt) }
} }
};
static const struct common_glue_ctx cast6_dec_cbc = {
.num_funcs = 2,
.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAST6_PARALLEL_BLOCKS,
.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(cast6_cbc_dec_8way) }
}, {
.num_blocks = 1,
.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__cast6_decrypt) }
} }
};
static const struct common_glue_ctx cast6_dec_xts = {
.num_funcs = 2,
.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAST6_PARALLEL_BLOCKS,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(cast6_xts_dec_8way) }
}, {
.num_blocks = 1,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(cast6_xts_dec) }
} }
};
static int ecb_encrypt(struct skcipher_request *req)
{
return glue_ecb_req_128bit(&cast6_enc, req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Johannes Goetzfried | 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(&cast6_dec, req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Johannes Goetzfried | 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(__cast6_encrypt),
req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Johannes Goetzfried | 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(&cast6_dec_cbc, req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Johannes Goetzfried | 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(&cast6_ctr, req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Johannes Goetzfried | 16 | 80.00% | 1 | 50.00% |
| Eric Biggers | 4 | 20.00% | 1 | 50.00% |
| Total | 20 | 100.00% | 2 | 100.00% |
struct cast6_xts_ctx {
struct cast6_ctx tweak_ctx;
struct cast6_ctx crypt_ctx;
};
static int xts_cast6_setkey(struct crypto_skcipher *tfm, const u8 *key,
unsigned int keylen)
{
struct cast6_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
u32 *flags = &tfm->base.crt_flags;
int err;
err = xts_verify_key(tfm, key, keylen);
if (err)
return err;
/* first half of xts-key is for crypt */
err = __cast6_setkey(&ctx->crypt_ctx, key, keylen / 2, flags);
if (err)
return err;
/* second half of xts-key is for tweak */
return __cast6_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2,
flags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Biggers | 70 | 63.64% | 2 | 66.67% |
| Johannes Goetzfried | 40 | 36.36% | 1 | 33.33% |
| Total | 110 | 100.00% | 3 | 100.00% |
static int xts_encrypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct cast6_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
return glue_xts_req_128bit(&cast6_enc_xts, req,
XTS_TWEAK_CAST(__cast6_encrypt),
&ctx->tweak_ctx, &ctx->crypt_ctx);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eric Biggers | 36 | 65.45% | 2 | 66.67% |
| Johannes Goetzfried | 19 | 34.55% | 1 | 33.33% |
| Total | 55 | 100.00% | 3 | 100.00% |
static int xts_decrypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct cast6_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
return glue_xts_req_128bit(&cast6_dec_xts, req,
XTS_TWEAK_CAST(__cast6_encrypt),
&ctx->tweak_ctx, &ctx->crypt_ctx);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Johannes Goetzfried | 24 | 43.64% | 1 | 25.00% |
| Eric Biggers | 16 | 29.09% | 2 | 50.00% |
| Jussi Kivilinna | 15 | 27.27% | 1 | 25.00% |
| Total | 55 | 100.00% | 4 | 100.00% |
static struct skcipher_alg cast6_algs[] = {
{
.base.cra_name = "__ecb(cast6)",
.base.cra_driver_name = "__ecb-cast6-avx",
.base.cra_priority = 200,
.base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = CAST6_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct cast6_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = CAST6_MIN_KEY_SIZE,
.max_keysize = CAST6_MAX_KEY_SIZE,
.setkey = cast6_setkey_skcipher,
.encrypt = ecb_encrypt,
.decrypt = ecb_decrypt,
}, {
.base.cra_name = "__cbc(cast6)",
.base.cra_driver_name = "__cbc-cast6-avx",
.base.cra_priority = 200,
.base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = CAST6_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct cast6_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = CAST6_MIN_KEY_SIZE,
.max_keysize = CAST6_MAX_KEY_SIZE,
.ivsize = CAST6_BLOCK_SIZE,
.setkey = cast6_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
}, {
.base.cra_name = "__ctr(cast6)",
.base.cra_driver_name = "__ctr-cast6-avx",
.base.cra_priority = 200,
.base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = 1,
.base.cra_ctxsize = sizeof(struct cast6_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = CAST6_MIN_KEY_SIZE,
.max_keysize = CAST6_MAX_KEY_SIZE,
.ivsize = CAST6_BLOCK_SIZE,
.chunksize = CAST6_BLOCK_SIZE,
.setkey = cast6_setkey_skcipher,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
}, {
.base.cra_name = "__xts(cast6)",
.base.cra_driver_name = "__xts-cast6-avx",
.base.cra_priority = 200,
.base.cra_flags = CRYPTO_ALG_INTERNAL,
.base.cra_blocksize = CAST6_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct cast6_xts_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = 2 * CAST6_MIN_KEY_SIZE,
.max_keysize = 2 * CAST6_MAX_KEY_SIZE,
.ivsize = CAST6_BLOCK_SIZE,
.setkey = xts_cast6_setkey,
.encrypt = xts_encrypt,
.decrypt = xts_decrypt,
},
};
static struct simd_skcipher_alg *cast6_simd_algs[ARRAY_SIZE(cast6_algs)];
static int __init cast6_init(void)
{
const char *feature_name;
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(cast6_algs,
ARRAY_SIZE(cast6_algs),
cast6_simd_algs);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Johannes Goetzfried | 36 | 67.92% | 1 | 25.00% |
| Ingo Molnar | 12 | 22.64% | 1 | 25.00% |
| Eric Biggers | 3 | 5.66% | 1 | 25.00% |
| Dave Hansen | 2 | 3.77% | 1 | 25.00% |
| Total | 53 | 100.00% | 4 | 100.00% |
static void __exit cast6_exit(void)
{
simd_unregister_skciphers(cast6_algs, ARRAY_SIZE(cast6_algs),
cast6_simd_algs);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Johannes Goetzfried | 18 | 85.71% | 1 | 50.00% |
| Eric Biggers | 3 | 14.29% | 1 | 50.00% |
| Total | 21 | 100.00% | 2 | 100.00% |
module_init(cast6_init);
module_exit(cast6_exit);
MODULE_DESCRIPTION("Cast6 Cipher Algorithm, AVX optimized");
MODULE_LICENSE("GPL");
MODULE_ALIAS_CRYPTO("cast6");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Johannes Goetzfried | 930 | 61.31% | 1 | 10.00% |
| Eric Biggers | 285 | 18.79% | 2 | 20.00% |
| Jussi Kivilinna | 283 | 18.66% | 3 | 30.00% |
| Ingo Molnar | 12 | 0.79% | 1 | 10.00% |
| Stephan Mueller | 4 | 0.26% | 1 | 10.00% |
| Dave Hansen | 2 | 0.13% | 1 | 10.00% |
| Kees Cook | 1 | 0.07% | 1 | 10.00% |
| Total | 1517 | 100.00% | 10 | 100.00% |
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