Commit f3f935a7 authored by Jussi Kivilinna's avatar Jussi Kivilinna Committed by Herbert Xu
Browse files

crypto: camellia - add AVX2/AES-NI/x86_64 assembler implementation of camellia cipher



Patch adds AVX2/AES-NI/x86-64 implementation of Camellia cipher, requiring
32 parallel blocks for input (512 bytes). Compared to AVX implementation, this
version is extended to use the 256-bit wide YMM registers. For AES-NI
instructions data is split to two 128-bit registers and merged afterwards.
Even with this additional handling, performance should be higher compared
to the AES-NI/AVX implementation.
Signed-off-by: default avatarJussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 56d76c96
......@@ -43,6 +43,7 @@ endif
# These modules require assembler to support AVX2.
ifeq ($(avx2_supported),yes)
obj-$(CONFIG_CRYPTO_BLOWFISH_AVX2_X86_64) += blowfish-avx2.o
obj-$(CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64) += camellia-aesni-avx2.o
obj-$(CONFIG_CRYPTO_SERPENT_AVX2_X86_64) += serpent-avx2.o
obj-$(CONFIG_CRYPTO_TWOFISH_AVX2_X86_64) += twofish-avx2.o
endif
......@@ -73,6 +74,7 @@ endif
ifeq ($(avx2_supported),yes)
blowfish-avx2-y := blowfish-avx2-asm_64.o blowfish_avx2_glue.o
camellia-aesni-avx2-y := camellia-aesni-avx2-asm_64.o camellia_aesni_avx2_glue.o
serpent-avx2-y := serpent-avx2-asm_64.o serpent_avx2_glue.o
twofish-avx2-y := twofish-avx2-asm_64.o twofish_avx2_glue.o
endif
......
This diff is collapsed.
/*
* Glue Code for x86_64/AVX2/AES-NI assembler optimized version of Camellia
*
* Copyright © 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/ctr.h>
#include <crypto/lrw.h>
#include <crypto/xts.h>
#include <asm/xcr.h>
#include <asm/xsave.h>
#include <asm/crypto/camellia.h>
#include <asm/crypto/ablk_helper.h>
#include <asm/crypto/glue_helper.h>
#define CAMELLIA_AESNI_PARALLEL_BLOCKS 16
#define CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS 32
/* 32-way AVX2/AES-NI parallel cipher functions */
asmlinkage void camellia_ecb_enc_32way(struct camellia_ctx *ctx, u8 *dst,
const u8 *src);
asmlinkage void camellia_ecb_dec_32way(struct camellia_ctx *ctx, u8 *dst,
const u8 *src);
asmlinkage void camellia_cbc_dec_32way(struct camellia_ctx *ctx, u8 *dst,
const u8 *src);
asmlinkage void camellia_ctr_32way(struct camellia_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
asmlinkage void camellia_xts_enc_32way(struct camellia_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
asmlinkage void camellia_xts_dec_32way(struct camellia_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
static const struct common_glue_ctx camellia_enc = {
.num_funcs = 4,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_enc_32way) }
}, {
.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_enc_16way) }
}, {
.num_blocks = 2,
.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_enc_blk_2way) }
}, {
.num_blocks = 1,
.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_enc_blk) }
} }
};
static const struct common_glue_ctx camellia_ctr = {
.num_funcs = 4,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_ctr_32way) }
}, {
.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_ctr_16way) }
}, {
.num_blocks = 2,
.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_crypt_ctr_2way) }
}, {
.num_blocks = 1,
.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_crypt_ctr) }
} }
};
static const struct common_glue_ctx camellia_enc_xts = {
.num_funcs = 3,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_enc_32way) }
}, {
.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_enc_16way) }
}, {
.num_blocks = 1,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_enc) }
} }
};
static const struct common_glue_ctx camellia_dec = {
.num_funcs = 4,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_dec_32way) }
}, {
.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_dec_16way) }
}, {
.num_blocks = 2,
.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_dec_blk_2way) }
}, {
.num_blocks = 1,
.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_dec_blk) }
} }
};
static const struct common_glue_ctx camellia_dec_cbc = {
.num_funcs = 4,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_cbc_dec_32way) }
}, {
.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_cbc_dec_16way) }
}, {
.num_blocks = 2,
.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_decrypt_cbc_2way) }
}, {
.num_blocks = 1,
.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_dec_blk) }
} }
};
static const struct common_glue_ctx camellia_dec_xts = {
.num_funcs = 3,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.funcs = { {
.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_dec_32way) }
}, {
.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_dec_16way) }
}, {
.num_blocks = 1,
.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_dec) }
} }
};
static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
return glue_ecb_crypt_128bit(&camellia_enc, desc, dst, src, nbytes);
}
static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
return glue_ecb_crypt_128bit(&camellia_dec, desc, dst, src, nbytes);
}
static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(camellia_enc_blk), desc,
dst, src, nbytes);
}
static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
return glue_cbc_decrypt_128bit(&camellia_dec_cbc, desc, dst, src,
nbytes);
}
static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
return glue_ctr_crypt_128bit(&camellia_ctr, desc, dst, src, nbytes);
}
static inline bool camellia_fpu_begin(bool fpu_enabled, unsigned int nbytes)
{
return glue_fpu_begin(CAMELLIA_BLOCK_SIZE,
CAMELLIA_AESNI_PARALLEL_BLOCKS, NULL, fpu_enabled,
nbytes);
}
static inline void camellia_fpu_end(bool fpu_enabled)
{
glue_fpu_end(fpu_enabled);
}
static int camellia_setkey(struct crypto_tfm *tfm, const u8 *in_key,
unsigned int key_len)
{
return __camellia_setkey(crypto_tfm_ctx(tfm), in_key, key_len,
&tfm->crt_flags);
}
struct crypt_priv {
struct camellia_ctx *ctx;
bool fpu_enabled;
};
static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
{
const unsigned int bsize = CAMELLIA_BLOCK_SIZE;
struct crypt_priv *ctx = priv;
int i;
ctx->fpu_enabled = camellia_fpu_begin(ctx->fpu_enabled, nbytes);
if (nbytes >= CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS * bsize) {
camellia_ecb_enc_32way(ctx->ctx, srcdst, srcdst);
srcdst += bsize * CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS;
nbytes -= bsize * CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS;
}
if (nbytes >= CAMELLIA_AESNI_PARALLEL_BLOCKS * bsize) {
camellia_ecb_enc_16way(ctx->ctx, srcdst, srcdst);
srcdst += bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
nbytes -= bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
}
while (nbytes >= CAMELLIA_PARALLEL_BLOCKS * bsize) {
camellia_enc_blk_2way(ctx->ctx, srcdst, srcdst);
srcdst += bsize * CAMELLIA_PARALLEL_BLOCKS;
nbytes -= bsize * CAMELLIA_PARALLEL_BLOCKS;
}
for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
camellia_enc_blk(ctx->ctx, srcdst, srcdst);
}
static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
{
const unsigned int bsize = CAMELLIA_BLOCK_SIZE;
struct crypt_priv *ctx = priv;
int i;
ctx->fpu_enabled = camellia_fpu_begin(ctx->fpu_enabled, nbytes);
if (nbytes >= CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS * bsize) {
camellia_ecb_dec_32way(ctx->ctx, srcdst, srcdst);
srcdst += bsize * CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS;
nbytes -= bsize * CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS;
}
if (nbytes >= CAMELLIA_AESNI_PARALLEL_BLOCKS * bsize) {
camellia_ecb_dec_16way(ctx->ctx, srcdst, srcdst);
srcdst += bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
nbytes -= bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
}
while (nbytes >= CAMELLIA_PARALLEL_BLOCKS * bsize) {
camellia_dec_blk_2way(ctx->ctx, srcdst, srcdst);
srcdst += bsize * CAMELLIA_PARALLEL_BLOCKS;
nbytes -= bsize * CAMELLIA_PARALLEL_BLOCKS;
}
for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
camellia_dec_blk(ctx->ctx, srcdst, srcdst);
}
static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
struct camellia_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
be128 buf[CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS];
struct crypt_priv crypt_ctx = {
.ctx = &ctx->camellia_ctx,
.fpu_enabled = false,
};
struct lrw_crypt_req req = {
.tbuf = buf,
.tbuflen = sizeof(buf),
.table_ctx = &ctx->lrw_table,
.crypt_ctx = &crypt_ctx,
.crypt_fn = encrypt_callback,
};
int ret;
desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
ret = lrw_crypt(desc, dst, src, nbytes, &req);
camellia_fpu_end(crypt_ctx.fpu_enabled);
return ret;
}
static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
struct camellia_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
be128 buf[CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS];
struct crypt_priv crypt_ctx = {
.ctx = &ctx->camellia_ctx,
.fpu_enabled = false,
};
struct lrw_crypt_req req = {
.tbuf = buf,
.tbuflen = sizeof(buf),
.table_ctx = &ctx->lrw_table,
.crypt_ctx = &crypt_ctx,
.crypt_fn = decrypt_callback,
};
int ret;
desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
ret = lrw_crypt(desc, dst, src, nbytes, &req);
camellia_fpu_end(crypt_ctx.fpu_enabled);
return ret;
}
static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
struct camellia_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
return glue_xts_crypt_128bit(&camellia_enc_xts, desc, dst, src, nbytes,
XTS_TWEAK_CAST(camellia_enc_blk),
&ctx->tweak_ctx, &ctx->crypt_ctx);
}
static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
struct camellia_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
return glue_xts_crypt_128bit(&camellia_dec_xts, desc, dst, src, nbytes,
XTS_TWEAK_CAST(camellia_enc_blk),
&ctx->tweak_ctx, &ctx->crypt_ctx);
}
static struct crypto_alg cmll_algs[10] = { {
.cra_name = "__ecb-camellia-aesni-avx2",
.cra_driver_name = "__driver-ecb-camellia-aesni-avx2",
.cra_priority = 0,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct camellia_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_u = {
.blkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.setkey = camellia_setkey,
.encrypt = ecb_encrypt,
.decrypt = ecb_decrypt,
},
},
}, {
.cra_name = "__cbc-camellia-aesni-avx2",
.cra_driver_name = "__driver-cbc-camellia-aesni-avx2",
.cra_priority = 0,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct camellia_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_u = {
.blkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.setkey = camellia_setkey,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
},
},
}, {
.cra_name = "__ctr-camellia-aesni-avx2",
.cra_driver_name = "__driver-ctr-camellia-aesni-avx2",
.cra_priority = 0,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = 1,
.cra_ctxsize = sizeof(struct camellia_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_u = {
.blkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = camellia_setkey,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
},
},
}, {
.cra_name = "__lrw-camellia-aesni-avx2",
.cra_driver_name = "__driver-lrw-camellia-aesni-avx2",
.cra_priority = 0,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct camellia_lrw_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_exit = lrw_camellia_exit_tfm,
.cra_u = {
.blkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE +
CAMELLIA_BLOCK_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE +
CAMELLIA_BLOCK_SIZE,
.ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = lrw_camellia_setkey,
.encrypt = lrw_encrypt,
.decrypt = lrw_decrypt,
},
},
}, {
.cra_name = "__xts-camellia-aesni-avx2",
.cra_driver_name = "__driver-xts-camellia-aesni-avx2",
.cra_priority = 0,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct camellia_xts_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_u = {
.blkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE * 2,
.max_keysize = CAMELLIA_MAX_KEY_SIZE * 2,
.ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = xts_camellia_setkey,
.encrypt = xts_encrypt,
.decrypt = xts_decrypt,
},
},
}, {
.cra_name = "ecb(camellia)",
.cra_driver_name = "ecb-camellia-aesni-avx2",
.cra_priority = 500,
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct async_helper_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = ablk_init,
.cra_exit = ablk_exit,
.cra_u = {
.ablkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.setkey = ablk_set_key,
.encrypt = ablk_encrypt,
.decrypt = ablk_decrypt,
},
},
}, {
.cra_name = "cbc(camellia)",
.cra_driver_name = "cbc-camellia-aesni-avx2",
.cra_priority = 500,
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct async_helper_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = ablk_init,
.cra_exit = ablk_exit,
.cra_u = {
.ablkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = ablk_set_key,
.encrypt = __ablk_encrypt,
.decrypt = ablk_decrypt,
},
},
}, {
.cra_name = "ctr(camellia)",
.cra_driver_name = "ctr-camellia-aesni-avx2",
.cra_priority = 500,
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = 1,
.cra_ctxsize = sizeof(struct async_helper_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = ablk_init,
.cra_exit = ablk_exit,
.cra_u = {
.ablkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = ablk_set_key,
.encrypt = ablk_encrypt,
.decrypt = ablk_encrypt,
.geniv = "chainiv",
},
},
}, {
.cra_name = "lrw(camellia)",
.cra_driver_name = "lrw-camellia-aesni-avx2",
.cra_priority = 500,
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct async_helper_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = ablk_init,
.cra_exit = ablk_exit,
.cra_u = {
.ablkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE +
CAMELLIA_BLOCK_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE +
CAMELLIA_BLOCK_SIZE,
.ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = ablk_set_key,
.encrypt = ablk_encrypt,
.decrypt = ablk_decrypt,
},
},
}, {
.cra_name = "xts(camellia)",
.cra_driver_name = "xts-camellia-aesni-avx2",
.cra_priority = 500,
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct async_helper_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = ablk_init,
.cra_exit = ablk_exit,
.cra_u = {
.ablkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE * 2,
.max_keysize = CAMELLIA_MAX_KEY_SIZE * 2,
.ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = ablk_set_key,
.encrypt = ablk_encrypt,
.decrypt = ablk_decrypt,
},
},
} };
static int __init camellia_aesni_init(void)
{
u64 xcr0;
if (!cpu_has_avx2 || !cpu_has_avx || !cpu_has_aes || !cpu_has_osxsave) {
pr_info("AVX2 or AES-NI instructions are not detected.\n");
return -ENODEV;
}
xcr0 = xgetbv(XCR_XFEATURE_ENABLED_MASK);
if ((xcr0 & (XSTATE_SSE | XSTATE_YMM)) != (XSTATE_SSE | XSTATE_YMM)) {
pr_info("AVX2 detected but unusable.\n");
return -ENODEV;
}
return crypto_register_algs(cmll_algs, ARRAY_SIZE(cmll_algs));
}
static void __exit camellia_aesni_fini(void)
{
crypto_unregister_algs(cmll_algs, ARRAY_SIZE(cmll_algs));
}
module_init(camellia_aesni_init);
module_exit(camellia_aesni_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Camellia Cipher Algorithm, AES-NI/AVX2 optimized");
MODULE_ALIAS("camellia");