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/xcr.h>
  23 #include <asm/xsave.h>
  24 #include <asm/crypto/camellia.h>
  25 #include <asm/crypto/glue_helper.h>
  26
  27 #define CAMELLIA_AESNI_PARALLEL_BLOCKS 16
  28
  29 /* 16-way parallel cipher functions (avx/aes-ni) */
  30 asmlinkage void camellia_ecb_enc_16way(struct camellia_ctx *ctx, u8 *dst,
  31                                        const u8 *src);
  32 EXPORT_SYMBOL_GPL(camellia_ecb_enc_16way);
  33
  34 asmlinkage void camellia_ecb_dec_16way(struct camellia_ctx *ctx, u8 *dst,
  35                                        const u8 *src);
  36 EXPORT_SYMBOL_GPL(camellia_ecb_dec_16way);
  37
  38 asmlinkage void camellia_cbc_dec_16way(struct camellia_ctx *ctx, u8 *dst,
  39                                        const u8 *src);
  40 EXPORT_SYMBOL_GPL(camellia_cbc_dec_16way);
  41
  42 asmlinkage void camellia_ctr_16way(struct camellia_ctx *ctx, u8 *dst,
  43                                    const u8 *src, le128 *iv);
  44 EXPORT_SYMBOL_GPL(camellia_ctr_16way);
  45
  46 asmlinkage void camellia_xts_enc_16way(struct camellia_ctx *ctx, u8 *dst,
  47                                        const u8 *src, le128 *iv);
  48 EXPORT_SYMBOL_GPL(camellia_xts_enc_16way);
  49
  50 asmlinkage void camellia_xts_dec_16way(struct camellia_ctx *ctx, u8 *dst,
  51                                        const u8 *src, le128 *iv);
  52 EXPORT_SYMBOL_GPL(camellia_xts_dec_16way);
  53
  54 void camellia_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv)
  55 {
  56         glue_xts_crypt_128bit_one(ctx, dst, src, iv,
  57                                   GLUE_FUNC_CAST(camellia_enc_blk));
  58 }
  59 EXPORT_SYMBOL_GPL(camellia_xts_enc);
  60
  61 void camellia_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv)
  62 {
  63         glue_xts_crypt_128bit_one(ctx, dst, src, iv,
  64                                   GLUE_FUNC_CAST(camellia_dec_blk));
  65 }
  66 EXPORT_SYMBOL_GPL(camellia_xts_dec);
  67
  68 static const struct common_glue_ctx camellia_enc = {
  69         .num_funcs = 3,
  70         .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
  71
  72         .funcs = { {
  73                 .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
  74                 .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_enc_16way) }
  75         }, {
  76                 .num_blocks = 2,
  77                 .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_enc_blk_2way) }
  78         }, {
  79                 .num_blocks = 1,
  80                 .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_enc_blk) }
  81         } }
  82 };
  83
  84 static const struct common_glue_ctx camellia_ctr = {
  85         .num_funcs = 3,
  86         .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
  87
  88         .funcs = { {
  89                 .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
  90                 .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_ctr_16way) }
  91         }, {
  92                 .num_blocks = 2,
  93                 .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_crypt_ctr_2way) }
  94         }, {
  95                 .num_blocks = 1,
  96                 .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_crypt_ctr) }
  97         } }
  98 };
  99
 100 static const struct common_glue_ctx camellia_enc_xts = {
 101         .num_funcs = 2,
 102         .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 103
 104         .funcs = { {
 105                 .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 106                 .fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_enc_16way) }
 107         }, {
 108                 .num_blocks = 1,
 109                 .fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_enc) }
 110         } }
 111 };
 112
 113 static const struct common_glue_ctx camellia_dec = {
 114         .num_funcs = 3,
 115         .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 116
 117         .funcs = { {
 118                 .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 119                 .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_dec_16way) }
 120         }, {
 121                 .num_blocks = 2,
 122                 .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_dec_blk_2way) }
 123         }, {
 124                 .num_blocks = 1,
 125                 .fn_u = { .ecb = GLUE_FUNC_CAST(camellia_dec_blk) }
 126         } }
 127 };
 128
 129 static const struct common_glue_ctx camellia_dec_cbc = {
 130         .num_funcs = 3,
 131         .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 132
 133         .funcs = { {
 134                 .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 135                 .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_cbc_dec_16way) }
 136         }, {
 137                 .num_blocks = 2,
 138                 .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_decrypt_cbc_2way) }
 139         }, {
 140                 .num_blocks = 1,
 141                 .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_dec_blk) }
 142         } }
 143 };
 144
 145 static const struct common_glue_ctx camellia_dec_xts = {
 146         .num_funcs = 2,
 147         .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 148
 149         .funcs = { {
 150                 .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
 151                 .fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_dec_16way) }
 152         }, {
 153                 .num_blocks = 1,
 154                 .fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_dec) }
 155         } }
 156 };
 157
 158 static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 159                        struct scatterlist *src, unsigned int nbytes)
 160 {
 161         return glue_ecb_crypt_128bit(&camellia_enc, desc, dst, src, nbytes);
 162 }
 163
 164 static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 165                        struct scatterlist *src, unsigned int nbytes)
 166 {
 167         return glue_ecb_crypt_128bit(&camellia_dec, desc, dst, src, nbytes);
 168 }
 169
 170 static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 171                        struct scatterlist *src, unsigned int nbytes)
 172 {
 173         return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(camellia_enc_blk), desc,
 174                                        dst, src, nbytes);
 175 }
 176
 177 static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 178                        struct scatterlist *src, unsigned int nbytes)
 179 {
 180         return glue_cbc_decrypt_128bit(&camellia_dec_cbc, desc, dst, src,
 181                                        nbytes);
 182 }
 183
 184 static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 185                      struct scatterlist *src, unsigned int nbytes)
 186 {
 187         return glue_ctr_crypt_128bit(&camellia_ctr, desc, dst, src, nbytes);
 188 }
 189
 190 static inline bool camellia_fpu_begin(bool fpu_enabled, unsigned int nbytes)
 191 {
 192         return glue_fpu_begin(CAMELLIA_BLOCK_SIZE,
 193                               CAMELLIA_AESNI_PARALLEL_BLOCKS, NULL, fpu_enabled,
 194                               nbytes);
 195 }
 196
 197 static inline void camellia_fpu_end(bool fpu_enabled)
 198 {
 199         glue_fpu_end(fpu_enabled);
 200 }
 201
 202 static int camellia_setkey(struct crypto_tfm *tfm, const u8 *in_key,
 203                            unsigned int key_len)
 204 {
 205         return __camellia_setkey(crypto_tfm_ctx(tfm), in_key, key_len,
 206                                  &tfm->crt_flags);
 207 }
 208
 209 struct crypt_priv {
 210         struct camellia_ctx *ctx;
 211         bool fpu_enabled;
 212 };
 213
 214 static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
 215 {
 216         const unsigned int bsize = CAMELLIA_BLOCK_SIZE;
 217         struct crypt_priv *ctx = priv;
 218         int i;
 219
 220         ctx->fpu_enabled = camellia_fpu_begin(ctx->fpu_enabled, nbytes);
 221
 222         if (nbytes >= CAMELLIA_AESNI_PARALLEL_BLOCKS * bsize) {
 223                 camellia_ecb_enc_16way(ctx->ctx, srcdst, srcdst);
 224                 srcdst += bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
 225                 nbytes -= bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
 226         }
 227
 228         while (nbytes >= CAMELLIA_PARALLEL_BLOCKS * bsize) {
 229                 camellia_enc_blk_2way(ctx->ctx, srcdst, srcdst);
 230                 srcdst += bsize * CAMELLIA_PARALLEL_BLOCKS;
 231                 nbytes -= bsize * CAMELLIA_PARALLEL_BLOCKS;
 232         }
 233
 234         for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
 235                 camellia_enc_blk(ctx->ctx, srcdst, srcdst);
 236 }
 237
 238 static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
 239 {
 240         const unsigned int bsize = CAMELLIA_BLOCK_SIZE;
 241         struct crypt_priv *ctx = priv;
 242         int i;
 243
 244         ctx->fpu_enabled = camellia_fpu_begin(ctx->fpu_enabled, nbytes);
 245
 246         if (nbytes >= CAMELLIA_AESNI_PARALLEL_BLOCKS * bsize) {
 247                 camellia_ecb_dec_16way(ctx->ctx, srcdst, srcdst);
 248                 srcdst += bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
 249                 nbytes -= bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
 250         }
 251
 252         while (nbytes >= CAMELLIA_PARALLEL_BLOCKS * bsize) {
 253                 camellia_dec_blk_2way(ctx->ctx, srcdst, srcdst);
 254                 srcdst += bsize * CAMELLIA_PARALLEL_BLOCKS;
 255                 nbytes -= bsize * CAMELLIA_PARALLEL_BLOCKS;
 256         }
 257
 258         for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
 259                 camellia_dec_blk(ctx->ctx, srcdst, srcdst);
 260 }
 261
 262 static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 263                        struct scatterlist *src, unsigned int nbytes)
 264 {
 265         struct camellia_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 266         be128 buf[CAMELLIA_AESNI_PARALLEL_BLOCKS];
 267         struct crypt_priv crypt_ctx = {
 268                 .ctx = &ctx->camellia_ctx,
 269                 .fpu_enabled = false,
 270         };
 271         struct lrw_crypt_req req = {
 272                 .tbuf = buf,
 273                 .tbuflen = sizeof(buf),
 274
 275                 .table_ctx = &ctx->lrw_table,
 276                 .crypt_ctx = &crypt_ctx,
 277                 .crypt_fn = encrypt_callback,
 278         };
 279         int ret;
 280
 281         desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
 282         ret = lrw_crypt(desc, dst, src, nbytes, &req);
 283         camellia_fpu_end(crypt_ctx.fpu_enabled);
 284
 285         return ret;
 286 }
 287
 288 static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 289                        struct scatterlist *src, unsigned int nbytes)
 290 {
 291         struct camellia_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 292         be128 buf[CAMELLIA_AESNI_PARALLEL_BLOCKS];
 293         struct crypt_priv crypt_ctx = {
 294                 .ctx = &ctx->camellia_ctx,
 295                 .fpu_enabled = false,
 296         };
 297         struct lrw_crypt_req req = {
 298                 .tbuf = buf,
 299                 .tbuflen = sizeof(buf),
 300
 301                 .table_ctx = &ctx->lrw_table,
 302                 .crypt_ctx = &crypt_ctx,
 303                 .crypt_fn = decrypt_callback,
 304         };
 305         int ret;
 306
 307         desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
 308         ret = lrw_crypt(desc, dst, src, nbytes, &req);
 309         camellia_fpu_end(crypt_ctx.fpu_enabled);
 310
 311         return ret;
 312 }
 313
 314 static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 315                        struct scatterlist *src, unsigned int nbytes)
 316 {
 317         struct camellia_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 318
 319         return glue_xts_crypt_128bit(&camellia_enc_xts, desc, dst, src, nbytes,
 320                                      XTS_TWEAK_CAST(camellia_enc_blk),
 321                                      &ctx->tweak_ctx, &ctx->crypt_ctx);
 322 }
 323
 324 static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
 325                        struct scatterlist *src, unsigned int nbytes)
 326 {
 327         struct camellia_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
 328
 329         return glue_xts_crypt_128bit(&camellia_dec_xts, desc, dst, src, nbytes,
 330                                      XTS_TWEAK_CAST(camellia_enc_blk),
 331                                      &ctx->tweak_ctx, &ctx->crypt_ctx);
 332 }
 333
 334 static struct crypto_alg cmll_algs[10] = { {
 335         .cra_name               = "__ecb-camellia-aesni",
 336         .cra_driver_name        = "__driver-ecb-camellia-aesni",
 337         .cra_priority           = 0,
 338         .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER,
 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         .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 359         .cra_ctxsize            = sizeof(struct camellia_ctx),
 360         .cra_alignmask          = 0,
 361         .cra_type               = &crypto_blkcipher_type,
 362         .cra_module             = THIS_MODULE,
 363         .cra_u = {
 364                 .blkcipher = {
 365                         .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 366                         .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 367                         .setkey         = camellia_setkey,
 368                         .encrypt        = cbc_encrypt,
 369                         .decrypt        = cbc_decrypt,
 370                 },
 371         },
 372 }, {
 373         .cra_name               = "__ctr-camellia-aesni",
 374         .cra_driver_name        = "__driver-ctr-camellia-aesni",
 375         .cra_priority           = 0,
 376         .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER,
 377         .cra_blocksize          = 1,
 378         .cra_ctxsize            = sizeof(struct camellia_ctx),
 379         .cra_alignmask          = 0,
 380         .cra_type               = &crypto_blkcipher_type,
 381         .cra_module             = THIS_MODULE,
 382         .cra_u = {
 383                 .blkcipher = {
 384                         .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 385                         .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 386                         .ivsize         = CAMELLIA_BLOCK_SIZE,
 387                         .setkey         = camellia_setkey,
 388                         .encrypt        = ctr_crypt,
 389                         .decrypt        = ctr_crypt,
 390                 },
 391         },
 392 }, {
 393         .cra_name               = "__lrw-camellia-aesni",
 394         .cra_driver_name        = "__driver-lrw-camellia-aesni",
 395         .cra_priority           = 0,
 396         .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER,
 397         .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 398         .cra_ctxsize            = sizeof(struct camellia_lrw_ctx),
 399         .cra_alignmask          = 0,
 400         .cra_type               = &crypto_blkcipher_type,
 401         .cra_module             = THIS_MODULE,
 402         .cra_exit               = lrw_camellia_exit_tfm,
 403         .cra_u = {
 404                 .blkcipher = {
 405                         .min_keysize    = CAMELLIA_MIN_KEY_SIZE +
 406                                           CAMELLIA_BLOCK_SIZE,
 407                         .max_keysize    = CAMELLIA_MAX_KEY_SIZE +
 408                                           CAMELLIA_BLOCK_SIZE,
 409                         .ivsize         = CAMELLIA_BLOCK_SIZE,
 410                         .setkey         = lrw_camellia_setkey,
 411                         .encrypt        = lrw_encrypt,
 412                         .decrypt        = lrw_decrypt,
 413                 },
 414         },
 415 }, {
 416         .cra_name               = "__xts-camellia-aesni",
 417         .cra_driver_name        = "__driver-xts-camellia-aesni",
 418         .cra_priority           = 0,
 419         .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER,
 420         .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 421         .cra_ctxsize            = sizeof(struct camellia_xts_ctx),
 422         .cra_alignmask          = 0,
 423         .cra_type               = &crypto_blkcipher_type,
 424         .cra_module             = THIS_MODULE,
 425         .cra_u = {
 426                 .blkcipher = {
 427                         .min_keysize    = CAMELLIA_MIN_KEY_SIZE * 2,
 428                         .max_keysize    = CAMELLIA_MAX_KEY_SIZE * 2,
 429                         .ivsize         = CAMELLIA_BLOCK_SIZE,
 430                         .setkey         = xts_camellia_setkey,
 431                         .encrypt        = xts_encrypt,
 432                         .decrypt        = xts_decrypt,
 433                 },
 434         },
 435 }, {
 436         .cra_name               = "ecb(camellia)",
 437         .cra_driver_name        = "ecb-camellia-aesni",
 438         .cra_priority           = 400,
 439         .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
 440         .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 441         .cra_ctxsize            = sizeof(struct async_helper_ctx),
 442         .cra_alignmask          = 0,
 443         .cra_type               = &crypto_ablkcipher_type,
 444         .cra_module             = THIS_MODULE,
 445         .cra_init               = ablk_init,
 446         .cra_exit               = ablk_exit,
 447         .cra_u = {
 448                 .ablkcipher = {
 449                         .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 450                         .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 451                         .setkey         = ablk_set_key,
 452                         .encrypt        = ablk_encrypt,
 453                         .decrypt        = ablk_decrypt,
 454                 },
 455         },
 456 }, {
 457         .cra_name               = "cbc(camellia)",
 458         .cra_driver_name        = "cbc-camellia-aesni",
 459         .cra_priority           = 400,
 460         .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
 461         .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 462         .cra_ctxsize            = sizeof(struct async_helper_ctx),
 463         .cra_alignmask          = 0,
 464         .cra_type               = &crypto_ablkcipher_type,
 465         .cra_module             = THIS_MODULE,
 466         .cra_init               = ablk_init,
 467         .cra_exit               = ablk_exit,
 468         .cra_u = {
 469                 .ablkcipher = {
 470                         .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 471                         .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 472                         .ivsize         = CAMELLIA_BLOCK_SIZE,
 473                         .setkey         = ablk_set_key,
 474                         .encrypt        = __ablk_encrypt,
 475                         .decrypt        = ablk_decrypt,
 476                 },
 477         },
 478 }, {
 479         .cra_name               = "ctr(camellia)",
 480         .cra_driver_name        = "ctr-camellia-aesni",
 481         .cra_priority           = 400,
 482         .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
 483         .cra_blocksize          = 1,
 484         .cra_ctxsize            = sizeof(struct async_helper_ctx),
 485         .cra_alignmask          = 0,
 486         .cra_type               = &crypto_ablkcipher_type,
 487         .cra_module             = THIS_MODULE,
 488         .cra_init               = ablk_init,
 489         .cra_exit               = ablk_exit,
 490         .cra_u = {
 491                 .ablkcipher = {
 492                         .min_keysize    = CAMELLIA_MIN_KEY_SIZE,
 493                         .max_keysize    = CAMELLIA_MAX_KEY_SIZE,
 494                         .ivsize         = CAMELLIA_BLOCK_SIZE,
 495                         .setkey         = ablk_set_key,
 496                         .encrypt        = ablk_encrypt,
 497                         .decrypt        = ablk_encrypt,
 498                         .geniv          = "chainiv",
 499                 },
 500         },
 501 }, {
 502         .cra_name               = "lrw(camellia)",
 503         .cra_driver_name        = "lrw-camellia-aesni",
 504         .cra_priority           = 400,
 505         .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
 506         .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 507         .cra_ctxsize            = sizeof(struct async_helper_ctx),
 508         .cra_alignmask          = 0,
 509         .cra_type               = &crypto_ablkcipher_type,
 510         .cra_module             = THIS_MODULE,
 511         .cra_init               = ablk_init,
 512         .cra_exit               = ablk_exit,
 513         .cra_u = {
 514                 .ablkcipher = {
 515                         .min_keysize    = CAMELLIA_MIN_KEY_SIZE +
 516                                           CAMELLIA_BLOCK_SIZE,
 517                         .max_keysize    = CAMELLIA_MAX_KEY_SIZE +
 518                                           CAMELLIA_BLOCK_SIZE,
 519                         .ivsize         = CAMELLIA_BLOCK_SIZE,
 520                         .setkey         = ablk_set_key,
 521                         .encrypt        = ablk_encrypt,
 522                         .decrypt        = ablk_decrypt,
 523                 },
 524         },
 525 }, {
 526         .cra_name               = "xts(camellia)",
 527         .cra_driver_name        = "xts-camellia-aesni",
 528         .cra_priority           = 400,
 529         .cra_flags              = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
 530         .cra_blocksize          = CAMELLIA_BLOCK_SIZE,
 531         .cra_ctxsize            = sizeof(struct async_helper_ctx),
 532         .cra_alignmask          = 0,
 533         .cra_type               = &crypto_ablkcipher_type,
 534         .cra_module             = THIS_MODULE,
 535         .cra_init               = ablk_init,
 536         .cra_exit               = ablk_exit,
 537         .cra_u = {
 538                 .ablkcipher = {
 539                         .min_keysize    = CAMELLIA_MIN_KEY_SIZE * 2,
 540                         .max_keysize    = CAMELLIA_MAX_KEY_SIZE * 2,
 541                         .ivsize         = CAMELLIA_BLOCK_SIZE,
 542                         .setkey         = ablk_set_key,
 543                         .encrypt        = ablk_encrypt,
 544                         .decrypt        = ablk_decrypt,
 545                 },
 546         },
 547 } };
 548
 549 static int __init camellia_aesni_init(void)
 550 {
 551         u64 xcr0;
 552
 553         if (!cpu_has_avx || !cpu_has_aes || !cpu_has_osxsave) {
 554                 pr_info("AVX or AES-NI instructions are not detected.\n");
 555                 return -ENODEV;
 556         }
 557
 558         xcr0 = xgetbv(XCR_XFEATURE_ENABLED_MASK);
 559         if ((xcr0 & (XSTATE_SSE | XSTATE_YMM)) != (XSTATE_SSE | XSTATE_YMM)) {
 560                 pr_info("AVX detected but unusable.\n");
 561                 return -ENODEV;
 562         }
 563
 564         return crypto_register_algs(cmll_algs, ARRAY_SIZE(cmll_algs));
 565 }
 566
 567 static void __exit camellia_aesni_fini(void)
 568 {
 569         crypto_unregister_algs(cmll_algs, ARRAY_SIZE(cmll_algs));
 570 }
 571
 572 module_init(camellia_aesni_init);
 573 module_exit(camellia_aesni_fini);
 574
 575 MODULE_LICENSE("GPL");
 576 MODULE_DESCRIPTION("Camellia Cipher Algorithm, AES-NI/AVX optimized");
 577 MODULE_ALIAS("camellia");
 578 MODULE_ALIAS("camellia-asm");