linux/arch/x86/crypto/camellia_aesni_avx_glue.c
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   1/*
   2 * Glue Code for x86_64/AVX/AES-NI assembler optimized version of Camellia
   3 *
   4 * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 *
  11 */
  12
  13#include <linux/module.h>
  14#include <linux/types.h>
  15#include <linux/crypto.h>
  16#include <linux/err.h>
  17#include <crypto/ablk_helper.h>
  18#include <crypto/algapi.h>
  19#include <crypto/ctr.h>
  20#include <crypto/lrw.h>
  21#include <crypto/xts.h>
  22#include <asm/fpu/api.h>
  23#include <asm/crypto/camellia.h>
  24#include <asm/crypto/glue_helper.h>
  25
  26#define CAMELLIA_AESNI_PARALLEL_BLOCKS 16
  27
  28/* 16-way parallel cipher functions (avx/aes-ni) */
  29asmlinkage void camellia_ecb_enc_16way(struct camellia_ctx *ctx, u8 *dst,
  30                                       const u8 *src);
  31EXPORT_SYMBOL_GPL(camellia_ecb_enc_16way);
  32
  33asmlinkage void camellia_ecb_dec_16way(struct camellia_ctx *ctx, u8 *dst,
  34                                       const u8 *src);
  35EXPORT_SYMBOL_GPL(camellia_ecb_dec_16way);
  36
  37asmlinkage void camellia_cbc_dec_16way(struct camellia_ctx *ctx, u8 *dst,
  38                                       const u8 *src);
  39EXPORT_SYMBOL_GPL(camellia_cbc_dec_16way);
  40
  41asmlinkage void camellia_ctr_16way(struct camellia_ctx *ctx, u8 *dst,
  42                                   const u8 *src, le128 *iv);
  43EXPORT_SYMBOL_GPL(camellia_ctr_16way);
  44
  45asmlinkage void camellia_xts_enc_16way(struct camellia_ctx *ctx, u8 *dst,
  46                                       const u8 *src, le128 *iv);
  47EXPORT_SYMBOL_GPL(camellia_xts_enc_16way);
  48
  49asmlinkage void camellia_xts_dec_16way(struct camellia_ctx *ctx, u8 *dst,
  50                                       const u8 *src, le128 *iv);
  51EXPORT_SYMBOL_GPL(camellia_xts_dec_16way);
  52
  53void camellia_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv)
  54{
  55        glue_xts_crypt_128bit_one(ctx, dst, src, iv,
  56                                  GLUE_FUNC_CAST(camellia_enc_blk));
  57}
  58EXPORT_SYMBOL_GPL(camellia_xts_enc);
  59
  60void camellia_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv)
  61{
  62        glue_xts_crypt_128bit_one(ctx, dst, src, iv,
  63                                  GLUE_FUNC_CAST(camellia_dec_blk));
  64}
  65EXPORT_SYMBOL_GPL(camellia_xts_dec);
  66
  67static const struct common_glue_ctx camellia_enc = {
  68        .num_funcs = 3,
  69        .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
  70
  71        .funcs = { {
  72                .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
  73                .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_enc_16way) }
  74        }, {
  75                .num_blocks = 2,
  76                .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_enc_blk_2way) }
  77        }, {
  78                .num_blocks = 1,
  79                .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_enc_blk) }
  80        } }
  81};
  82
  83static const struct common_glue_ctx camellia_ctr = {
  84        .num_funcs = 3,
  85        .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
  86
  87        .funcs = { {
  88                .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
  89                .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_ctr_16way) }
  90        }, {
  91                .num_blocks = 2,
  92                .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_crypt_ctr_2way) }
  93        }, {
  94                .num_blocks = 1,
  95                .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_crypt_ctr) }
  96        } }
  97};
  98
  99static const struct common_glue_ctx camellia_enc_xts = {
 100        .num_funcs = 2,
 101        .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 102
 103        .funcs = { {
 104                .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 105                .fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_enc_16way) }
 106        }, {
 107                .num_blocks = 1,
 108                .fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_enc) }
 109        } }
 110};
 111
 112static const struct common_glue_ctx camellia_dec = {
 113        .num_funcs = 3,
 114        .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 115
 116        .funcs = { {
 117                .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 118                .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_dec_16way) }
 119        }, {
 120                .num_blocks = 2,
 121                .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_dec_blk_2way) }
 122        }, {
 123                .num_blocks = 1,
 124                .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_dec_blk) }
 125        } }
 126};
 127
 128static const struct common_glue_ctx camellia_dec_cbc = {
 129        .num_funcs = 3,
 130        .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 131
 132        .funcs = { {
 133                .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 134                .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_cbc_dec_16way) }
 135        }, {
 136                .num_blocks = 2,
 137                .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_decrypt_cbc_2way) }
 138        }, {
 139                .num_blocks = 1,
 140                .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_dec_blk) }
 141        } }
 142};
 143
 144static const struct common_glue_ctx camellia_dec_xts = {
 145        .num_funcs = 2,
 146        .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 147
 148        .funcs = { {
 149                .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 150                .fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_dec_16way) }
 151        }, {
 152                .num_blocks = 1,
 153                .fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_dec) }
 154        } }
 155};
 156
 157static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 158                       struct scatterlist *src, unsigned int nbytes)
 159{
 160        return glue_ecb_crypt_128bit(&camellia_enc, desc, dst, src, nbytes);
 161}
 162
 163static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 164                       struct scatterlist *src, unsigned int nbytes)
 165{
 166        return glue_ecb_crypt_128bit(&camellia_dec, desc, dst, src, nbytes);
 167}
 168
 169static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 170                       struct scatterlist *src, unsigned int nbytes)
 171{
 172        return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(camellia_enc_blk), desc,
 173                                       dst, src, nbytes);
 174}
 175
 176static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 177                       struct scatterlist *src, unsigned int nbytes)
 178{
 179        return glue_cbc_decrypt_128bit(&camellia_dec_cbc, desc, dst, src,
 180                                       nbytes);
 181}
 182
 183static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 184                     struct scatterlist *src, unsigned int nbytes)
 185{
 186        return glue_ctr_crypt_128bit(&camellia_ctr, desc, dst, src, nbytes);
 187}
 188
 189static inline bool camellia_fpu_begin(bool fpu_enabled, unsigned int nbytes)
 190{
 191        return glue_fpu_begin(CAMELLIA_BLOCK_SIZE,
 192                              CAMELLIA_AESNI_PARALLEL_BLOCKS, NULL, fpu_enabled,
 193                              nbytes);
 194}
 195
 196static inline void camellia_fpu_end(bool fpu_enabled)
 197{
 198        glue_fpu_end(fpu_enabled);
 199}
 200
 201static int camellia_setkey(struct crypto_tfm *tfm, const u8 *in_key,
 202                           unsigned int key_len)
 203{
 204        return __camellia_setkey(crypto_tfm_ctx(tfm), in_key, key_len,
 205                                 &tfm->crt_flags);
 206}
 207
 208struct crypt_priv {
 209        struct camellia_ctx *ctx;
 210        bool fpu_enabled;
 211};
 212
 213static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
 214{
 215        const unsigned int bsize = CAMELLIA_BLOCK_SIZE;
 216        struct crypt_priv *ctx = priv;
 217        int i;
 218
 219        ctx->fpu_enabled = camellia_fpu_begin(ctx->fpu_enabled, nbytes);
 220
 221        if (nbytes >= CAMELLIA_AESNI_PARALLEL_BLOCKS * bsize) {
 222                camellia_ecb_enc_16way(ctx->ctx, srcdst, srcdst);
 223                srcdst += bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
 224                nbytes -= bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
 225        }
 226
 227        while (nbytes >= CAMELLIA_PARALLEL_BLOCKS * bsize) {
 228                camellia_enc_blk_2way(ctx->ctx, srcdst, srcdst);
 229                srcdst += bsize * CAMELLIA_PARALLEL_BLOCKS;
 230                nbytes -= bsize * CAMELLIA_PARALLEL_BLOCKS;
 231        }
 232
 233        for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
 234                camellia_enc_blk(ctx->ctx, srcdst, srcdst);
 235}
 236
 237static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
 238{
 239        const unsigned int bsize = CAMELLIA_BLOCK_SIZE;
 240        struct crypt_priv *ctx = priv;
 241        int i;
 242
 243        ctx->fpu_enabled = camellia_fpu_begin(ctx->fpu_enabled, nbytes);
 244
 245        if (nbytes >= CAMELLIA_AESNI_PARALLEL_BLOCKS * bsize) {
 246                camellia_ecb_dec_16way(ctx->ctx, srcdst, srcdst);
 247                srcdst += bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
 248                nbytes -= bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
 249        }
 250
 251        while (nbytes >= CAMELLIA_PARALLEL_BLOCKS * bsize) {
 252                camellia_dec_blk_2way(ctx->ctx, srcdst, srcdst);
 253                srcdst += bsize * CAMELLIA_PARALLEL_BLOCKS;
 254                nbytes -= bsize * CAMELLIA_PARALLEL_BLOCKS;
 255        }
 256
 257        for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
 258                camellia_dec_blk(ctx->ctx, srcdst, srcdst);
 259}
 260
 261static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 262                       struct scatterlist *src, unsigned int nbytes)
 263{
 264        struct camellia_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 265        be128 buf[CAMELLIA_AESNI_PARALLEL_BLOCKS];
 266        struct crypt_priv crypt_ctx = {
 267                .ctx = &ctx->camellia_ctx,
 268                .fpu_enabled = false,
 269        };
 270        struct lrw_crypt_req req = {
 271                .tbuf = buf,
 272                .tbuflen = sizeof(buf),
 273
 274                .table_ctx = &ctx->lrw_table,
 275                .crypt_ctx = &crypt_ctx,
 276                .crypt_fn = encrypt_callback,
 277        };
 278        int ret;
 279
 280        desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
 281        ret = lrw_crypt(desc, dst, src, nbytes, &req);
 282        camellia_fpu_end(crypt_ctx.fpu_enabled);
 283
 284        return ret;
 285}
 286
 287static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 288                       struct scatterlist *src, unsigned int nbytes)
 289{
 290        struct camellia_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 291        be128 buf[CAMELLIA_AESNI_PARALLEL_BLOCKS];
 292        struct crypt_priv crypt_ctx = {
 293                .ctx = &ctx->camellia_ctx,
 294                .fpu_enabled = false,
 295        };
 296        struct lrw_crypt_req req = {
 297                .tbuf = buf,
 298                .tbuflen = sizeof(buf),
 299
 300                .table_ctx = &ctx->lrw_table,
 301                .crypt_ctx = &crypt_ctx,
 302                .crypt_fn = decrypt_callback,
 303        };
 304        int ret;
 305
 306        desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
 307        ret = lrw_crypt(desc, dst, src, nbytes, &req);
 308        camellia_fpu_end(crypt_ctx.fpu_enabled);
 309
 310        return ret;
 311}
 312
 313static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 314                       struct scatterlist *src, unsigned int nbytes)
 315{
 316        struct camellia_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 317
 318        return glue_xts_crypt_128bit(&camellia_enc_xts, desc, dst, src, nbytes,
 319                                     XTS_TWEAK_CAST(camellia_enc_blk),
 320                                     &ctx->tweak_ctx, &ctx->crypt_ctx);
 321}
 322
 323static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 324                       struct scatterlist *src, unsigned int nbytes)
 325{
 326        struct camellia_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 327
 328        return glue_xts_crypt_128bit(&camellia_dec_xts, desc, dst, src, nbytes,
 329                                     XTS_TWEAK_CAST(camellia_enc_blk),
 330                                     &ctx->tweak_ctx, &ctx->crypt_ctx);
 331}
 332
 333static struct crypto_alg cmll_algs[10] = { {
 334        .cra_name               = "__ecb-camellia-aesni",
 335        .cra_driver_name        = "__driver-ecb-camellia-aesni",
 336        .cra_priority           = 0,
 337        .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER |
 338                                  CRYPTO_ALG_INTERNAL,
 339        .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 340        .cra_ctxsize            = sizeof(struct camellia_ctx),
 341        .cra_alignmask          = 0,
 342        .cra_type               = &crypto_blkcipher_type,
 343        .cra_module             = THIS_MODULE,
 344        .cra_u = {
 345                .blkcipher = {
 346                        .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 347                        .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 348                        .setkey         = camellia_setkey,
 349                        .encrypt        = ecb_encrypt,
 350                        .decrypt        = ecb_decrypt,
 351                },
 352        },
 353}, {
 354        .cra_name               = "__cbc-camellia-aesni",
 355        .cra_driver_name        = "__driver-cbc-camellia-aesni",
 356        .cra_priority           = 0,
 357        .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER |
 358                                  CRYPTO_ALG_INTERNAL,
 359        .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 360        .cra_ctxsize            = sizeof(struct camellia_ctx),
 361        .cra_alignmask          = 0,
 362        .cra_type               = &crypto_blkcipher_type,
 363        .cra_module             = THIS_MODULE,
 364        .cra_u = {
 365                .blkcipher = {
 366                        .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 367                        .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 368                        .setkey         = camellia_setkey,
 369                        .encrypt        = cbc_encrypt,
 370                        .decrypt        = cbc_decrypt,
 371                },
 372        },
 373}, {
 374        .cra_name               = "__ctr-camellia-aesni",
 375        .cra_driver_name        = "__driver-ctr-camellia-aesni",
 376        .cra_priority           = 0,
 377        .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER |
 378                                  CRYPTO_ALG_INTERNAL,
 379        .cra_blocksize          = 1,
 380        .cra_ctxsize            = sizeof(struct camellia_ctx),
 381        .cra_alignmask          = 0,
 382        .cra_type               = &crypto_blkcipher_type,
 383        .cra_module             = THIS_MODULE,
 384        .cra_u = {
 385                .blkcipher = {
 386                        .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 387                        .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 388                        .ivsize         = CAMELLIA_BLOCK_SIZE,
 389                        .setkey         = camellia_setkey,
 390                        .encrypt        = ctr_crypt,
 391                        .decrypt        = ctr_crypt,
 392                },
 393        },
 394}, {
 395        .cra_name               = "__lrw-camellia-aesni",
 396        .cra_driver_name        = "__driver-lrw-camellia-aesni",
 397        .cra_priority           = 0,
 398        .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER |
 399                                  CRYPTO_ALG_INTERNAL,
 400        .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 401        .cra_ctxsize            = sizeof(struct camellia_lrw_ctx),
 402        .cra_alignmask          = 0,
 403        .cra_type               = &crypto_blkcipher_type,
 404        .cra_module             = THIS_MODULE,
 405        .cra_exit               = lrw_camellia_exit_tfm,
 406        .cra_u = {
 407                .blkcipher = {
 408                        .min_keysize    = CAMELLIA_MIN_KEY_SIZE +
 409                                          CAMELLIA_BLOCK_SIZE,
 410                        .max_keysize    = CAMELLIA_MAX_KEY_SIZE +
 411                                          CAMELLIA_BLOCK_SIZE,
 412                        .ivsize         = CAMELLIA_BLOCK_SIZE,
 413                        .setkey         = lrw_camellia_setkey,
 414                        .encrypt        = lrw_encrypt,
 415                        .decrypt        = lrw_decrypt,
 416                },
 417        },
 418}, {
 419        .cra_name               = "__xts-camellia-aesni",
 420        .cra_driver_name        = "__driver-xts-camellia-aesni",
 421        .cra_priority           = 0,
 422        .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER |
 423                                  CRYPTO_ALG_INTERNAL,
 424        .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 425        .cra_ctxsize            = sizeof(struct camellia_xts_ctx),
 426        .cra_alignmask          = 0,
 427        .cra_type               = &crypto_blkcipher_type,
 428        .cra_module             = THIS_MODULE,
 429        .cra_u = {
 430                .blkcipher = {
 431                        .min_keysize    = CAMELLIA_MIN_KEY_SIZE * 2,
 432                        .max_keysize    = CAMELLIA_MAX_KEY_SIZE * 2,
 433                        .ivsize         = CAMELLIA_BLOCK_SIZE,
 434                        .setkey         = xts_camellia_setkey,
 435                        .encrypt        = xts_encrypt,
 436                        .decrypt        = xts_decrypt,
 437                },
 438        },
 439}, {
 440        .cra_name               = "ecb(camellia)",
 441        .cra_driver_name        = "ecb-camellia-aesni",
 442        .cra_priority           = 400,
 443        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
 444        .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 445        .cra_ctxsize            = sizeof(struct async_helper_ctx),
 446        .cra_alignmask          = 0,
 447        .cra_type               = &crypto_ablkcipher_type,
 448        .cra_module             = THIS_MODULE,
 449        .cra_init               = ablk_init,
 450        .cra_exit               = ablk_exit,
 451        .cra_u = {
 452                .ablkcipher = {
 453                        .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 454                        .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 455                        .setkey         = ablk_set_key,
 456                        .encrypt        = ablk_encrypt,
 457                        .decrypt        = ablk_decrypt,
 458                },
 459        },
 460}, {
 461        .cra_name               = "cbc(camellia)",
 462        .cra_driver_name        = "cbc-camellia-aesni",
 463        .cra_priority           = 400,
 464        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
 465        .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 466        .cra_ctxsize            = sizeof(struct async_helper_ctx),
 467        .cra_alignmask          = 0,
 468        .cra_type               = &crypto_ablkcipher_type,
 469        .cra_module             = THIS_MODULE,
 470        .cra_init               = ablk_init,
 471        .cra_exit               = ablk_exit,
 472        .cra_u = {
 473                .ablkcipher = {
 474                        .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 475                        .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 476                        .ivsize         = CAMELLIA_BLOCK_SIZE,
 477                        .setkey         = ablk_set_key,
 478                        .encrypt        = __ablk_encrypt,
 479                        .decrypt        = ablk_decrypt,
 480                },
 481        },
 482}, {
 483        .cra_name               = "ctr(camellia)",
 484        .cra_driver_name        = "ctr-camellia-aesni",
 485        .cra_priority           = 400,
 486        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
 487        .cra_blocksize          = 1,
 488        .cra_ctxsize            = sizeof(struct async_helper_ctx),
 489        .cra_alignmask          = 0,
 490        .cra_type               = &crypto_ablkcipher_type,
 491        .cra_module             = THIS_MODULE,
 492        .cra_init               = ablk_init,
 493        .cra_exit               = ablk_exit,
 494        .cra_u = {
 495                .ablkcipher = {
 496                        .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 497                        .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 498                        .ivsize         = CAMELLIA_BLOCK_SIZE,
 499                        .setkey         = ablk_set_key,
 500                        .encrypt        = ablk_encrypt,
 501                        .decrypt        = ablk_encrypt,
 502                        .geniv          = "chainiv",
 503                },
 504        },
 505}, {
 506        .cra_name               = "lrw(camellia)",
 507        .cra_driver_name        = "lrw-camellia-aesni",
 508        .cra_priority           = 400,
 509        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
 510        .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 511        .cra_ctxsize            = sizeof(struct async_helper_ctx),
 512        .cra_alignmask          = 0,
 513        .cra_type               = &crypto_ablkcipher_type,
 514        .cra_module             = THIS_MODULE,
 515        .cra_init               = ablk_init,
 516        .cra_exit               = ablk_exit,
 517        .cra_u = {
 518                .ablkcipher = {
 519                        .min_keysize    = CAMELLIA_MIN_KEY_SIZE +
 520                                          CAMELLIA_BLOCK_SIZE,
 521                        .max_keysize    = CAMELLIA_MAX_KEY_SIZE +
 522                                          CAMELLIA_BLOCK_SIZE,
 523                        .ivsize         = CAMELLIA_BLOCK_SIZE,
 524                        .setkey         = ablk_set_key,
 525                        .encrypt        = ablk_encrypt,
 526                        .decrypt        = ablk_decrypt,
 527                },
 528        },
 529}, {
 530        .cra_name               = "xts(camellia)",
 531        .cra_driver_name        = "xts-camellia-aesni",
 532        .cra_priority           = 400,
 533        .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
 534        .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 535        .cra_ctxsize            = sizeof(struct async_helper_ctx),
 536        .cra_alignmask          = 0,
 537        .cra_type               = &crypto_ablkcipher_type,
 538        .cra_module             = THIS_MODULE,
 539        .cra_init               = ablk_init,
 540        .cra_exit               = ablk_exit,
 541        .cra_u = {
 542                .ablkcipher = {
 543                        .min_keysize    = CAMELLIA_MIN_KEY_SIZE * 2,
 544                        .max_keysize    = CAMELLIA_MAX_KEY_SIZE * 2,
 545                        .ivsize         = CAMELLIA_BLOCK_SIZE,
 546                        .setkey         = ablk_set_key,
 547                        .encrypt        = ablk_encrypt,
 548                        .decrypt        = ablk_decrypt,
 549                },
 550        },
 551} };
 552
 553static int __init camellia_aesni_init(void)
 554{
 555        const char *feature_name;
 556
 557        if (!cpu_has_avx || !cpu_has_aes || !cpu_has_osxsave) {
 558                pr_info("AVX or AES-NI instructions are not detected.\n");
 559                return -ENODEV;
 560        }
 561
 562        if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM,
 563                                &feature_name)) {
 564                pr_info("CPU feature '%s' is not supported.\n", feature_name);
 565                return -ENODEV;
 566        }
 567
 568        return crypto_register_algs(cmll_algs, ARRAY_SIZE(cmll_algs));
 569}
 570
 571static void __exit camellia_aesni_fini(void)
 572{
 573        crypto_unregister_algs(cmll_algs, ARRAY_SIZE(cmll_algs));
 574}
 575
 576module_init(camellia_aesni_init);
 577module_exit(camellia_aesni_fini);
 578
 579MODULE_LICENSE("GPL");
 580MODULE_DESCRIPTION("Camellia Cipher Algorithm, AES-NI/AVX optimized");
 581MODULE_ALIAS_CRYPTO("camellia");
 582MODULE_ALIAS_CRYPTO("camellia-asm");
 583