arch/x86/crypto/camellia_aesni_avx_glue.c

   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) */
  29 asmlinkage void camellia_ecb_enc_16way(struct camellia_ctx *ctx, u8 *dst,
  30                                        const u8 *src);
  31 EXPORT_SYMBOL_GPL(camellia_ecb_enc_16way);
  32
  33 asmlinkage void camellia_ecb_dec_16way(struct camellia_ctx *ctx, u8 *dst,
  34                                        const u8 *src);
  35 EXPORT_SYMBOL_GPL(camellia_ecb_dec_16way);
  36
  37 asmlinkage void camellia_cbc_dec_16way(struct camellia_ctx *ctx, u8 *dst,
  38                                        const u8 *src);
  39 EXPORT_SYMBOL_GPL(camellia_cbc_dec_16way);
  40
  41 asmlinkage void camellia_ctr_16way(struct camellia_ctx *ctx, u8 *dst,
  42                                    const u8 *src, le128 *iv);
  43 EXPORT_SYMBOL_GPL(camellia_ctr_16way);
  44
  45 asmlinkage void camellia_xts_enc_16way(struct camellia_ctx *ctx, u8 *dst,
  46                                        const u8 *src, le128 *iv);
  47 EXPORT_SYMBOL_GPL(camellia_xts_enc_16way);
  48
  49 asmlinkage void camellia_xts_dec_16way(struct camellia_ctx *ctx, u8 *dst,
  50                                        const u8 *src, le128 *iv);
  51 EXPORT_SYMBOL_GPL(camellia_xts_dec_16way);
  52
  53 void 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 }
  58 EXPORT_SYMBOL_GPL(camellia_xts_enc);
  59
  60 void 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 }
  65 EXPORT_SYMBOL_GPL(camellia_xts_dec);
  66
  67 static 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
  83 static 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
  99 static 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
 112 static 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
 128 static 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
 144 static 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
 157 static 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
 163 static 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
 169 static 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
 176 static 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
 183 static 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
 189 static 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
 196 static inline void camellia_fpu_end(bool fpu_enabled)
 197 {
 198         glue_fpu_end(fpu_enabled);
 199 }
 200
 201 static 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
 208 struct crypt_priv {
 209         struct camellia_ctx *ctx;
 210         bool fpu_enabled;
 211 };
 212
 213 static 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
 237 static 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
 261 static 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
 287 static 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
 313 static 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
 323 static 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
 333 static 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
 553 static 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
 571 static void __exit camellia_aesni_fini(void)
 572 {
 573         crypto_unregister_algs(cmll_algs, ARRAY_SIZE(cmll_algs));
 574 }
 575
 576 module_init(camellia_aesni_init);
 577 module_exit(camellia_aesni_fini);
 578
 579 MODULE_LICENSE("GPL");
 580 MODULE_DESCRIPTION("Camellia Cipher Algorithm, AES-NI/AVX optimized");
 581 MODULE_ALIAS_CRYPTO("camellia");
 582 MODULE_ALIAS_CRYPTO("camellia-asm");