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_CRYPTO("camellia"); 578 MODULE_ALIAS_CRYPTO("camellia-asm"); 579