include/linux/crypto.h

   1 /*
   2  * Scatterlist Cryptographic API.
   3  *
   4  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
   5  * Copyright (c) 2002 David S. Miller (davem@redhat.com)
   6  * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
   7  *
   8  * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
   9  * and Nettle, by Niels Möller.
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the Free
  13  * Software Foundation; either version 2 of the License, or (at your option)
  14  * any later version.
  15  *
  16  */
  17 #ifndef _LINUX_CRYPTO_H
  18 #define _LINUX_CRYPTO_H
  19
  20 #include <asm/atomic.h>
  21 #include <linux/module.h>
  22 #include <linux/kernel.h>
  23 #include <linux/list.h>
  24 #include <linux/slab.h>
  25 #include <linux/string.h>
  26 #include <linux/uaccess.h>
  27
  28 /*
  29  * Algorithm masks and types.
  30  */
  31 #define CRYPTO_ALG_TYPE_MASK            0x0000000f
  32 #define CRYPTO_ALG_TYPE_CIPHER          0x00000001
  33 #define CRYPTO_ALG_TYPE_COMPRESS        0x00000002
  34 #define CRYPTO_ALG_TYPE_AEAD            0x00000003
  35 #define CRYPTO_ALG_TYPE_BLKCIPHER       0x00000004
  36 #define CRYPTO_ALG_TYPE_ABLKCIPHER      0x00000005
  37 #define CRYPTO_ALG_TYPE_GIVCIPHER       0x00000006
  38 #define CRYPTO_ALG_TYPE_DIGEST          0x00000008
  39 #define CRYPTO_ALG_TYPE_HASH            0x00000008
  40 #define CRYPTO_ALG_TYPE_SHASH           0x00000009
  41 #define CRYPTO_ALG_TYPE_AHASH           0x0000000a
  42 #define CRYPTO_ALG_TYPE_RNG             0x0000000c
  43 #define CRYPTO_ALG_TYPE_PCOMPRESS       0x0000000f
  44
  45 #define CRYPTO_ALG_TYPE_HASH_MASK       0x0000000e
  46 #define CRYPTO_ALG_TYPE_AHASH_MASK      0x0000000c
  47 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK  0x0000000c
  48
  49 #define CRYPTO_ALG_LARVAL               0x00000010
  50 #define CRYPTO_ALG_DEAD                 0x00000020
  51 #define CRYPTO_ALG_DYING                0x00000040
  52 #define CRYPTO_ALG_ASYNC                0x00000080
  53
  54 /*
  55  * Set this bit if and only if the algorithm requires another algorithm of
  56  * the same type to handle corner cases.
  57  */
  58 #define CRYPTO_ALG_NEED_FALLBACK        0x00000100
  59
  60 /*
  61  * This bit is set for symmetric key ciphers that have already been wrapped
  62  * with a generic IV generator to prevent them from being wrapped again.
  63  */
  64 #define CRYPTO_ALG_GENIV                0x00000200
  65
  66 /*
  67  * Set if the algorithm has passed automated run-time testing.  Note that
  68  * if there is no run-time testing for a given algorithm it is considered
  69  * to have passed.
  70  */
  71
  72 #define CRYPTO_ALG_TESTED               0x00000400
  73
  74 /*
  75  * Transform masks and values (for crt_flags).
  76  */
  77 #define CRYPTO_TFM_REQ_MASK             0x000fff00
  78 #define CRYPTO_TFM_RES_MASK             0xfff00000
  79
  80 #define CRYPTO_TFM_REQ_WEAK_KEY         0x00000100
  81 #define CRYPTO_TFM_REQ_MAY_SLEEP        0x00000200
  82 #define CRYPTO_TFM_REQ_MAY_BACKLOG      0x00000400
  83 #define CRYPTO_TFM_RES_WEAK_KEY         0x00100000
  84 #define CRYPTO_TFM_RES_BAD_KEY_LEN      0x00200000
  85 #define CRYPTO_TFM_RES_BAD_KEY_SCHED    0x00400000
  86 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN    0x00800000
  87 #define CRYPTO_TFM_RES_BAD_FLAGS        0x01000000
  88
  89 /*
  90  * Miscellaneous stuff.
  91  */
  92 #define CRYPTO_MAX_ALG_NAME             64
  93
  94 /*
  95  * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
  96  * declaration) is used to ensure that the crypto_tfm context structure is
  97  * aligned correctly for the given architecture so that there are no alignment
  98  * faults for C data types.  In particular, this is required on platforms such
  99  * as arm where pointers are 32-bit aligned but there are data types such as
 100  * u64 which require 64-bit alignment.
 101  */
 102 #if defined(ARCH_KMALLOC_MINALIGN)
 103 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
 104 #elif defined(ARCH_SLAB_MINALIGN)
 105 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
 106 #else
 107 #define CRYPTO_MINALIGN __alignof__(unsigned long long)
 108 #endif
 109
 110 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
 111
 112 struct scatterlist;
 113 struct crypto_ablkcipher;
 114 struct crypto_async_request;
 115 struct crypto_aead;
 116 struct crypto_blkcipher;
 117 struct crypto_hash;
 118 struct crypto_ahash;
 119 struct crypto_rng;
 120 struct crypto_tfm;
 121 struct crypto_type;
 122 struct aead_givcrypt_request;
 123 struct skcipher_givcrypt_request;
 124
 125 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
 126
 127 struct crypto_async_request {
 128         struct list_head list;
 129         crypto_completion_t complete;
 130         void *data;
 131         struct crypto_tfm *tfm;
 132
 133         u32 flags;
 134 };
 135
 136 struct ablkcipher_request {
 137         struct crypto_async_request base;
 138
 139         unsigned int nbytes;
 140
 141         void *info;
 142
 143         struct scatterlist *src;
 144         struct scatterlist *dst;
 145
 146         void *__ctx[] CRYPTO_MINALIGN_ATTR;
 147 };
 148
 149 struct ahash_request {
 150         struct crypto_async_request base;
 151
 152         unsigned int nbytes;
 153         struct scatterlist *src;
 154         u8                 *result;
 155
 156         void *__ctx[] CRYPTO_MINALIGN_ATTR;
 157 };
 158
 159 /**
 160  *      struct aead_request - AEAD request
 161  *      @base: Common attributes for async crypto requests
 162  *      @assoclen: Length in bytes of associated data for authentication
 163  *      @cryptlen: Length of data to be encrypted or decrypted
 164  *      @iv: Initialisation vector
 165  *      @assoc: Associated data
 166  *      @src: Source data
 167  *      @dst: Destination data
 168  *      @__ctx: Start of private context data
 169  */
 170 struct aead_request {
 171         struct crypto_async_request base;
 172
 173         unsigned int assoclen;
 174         unsigned int cryptlen;
 175
 176         u8 *iv;
 177
 178         struct scatterlist *assoc;
 179         struct scatterlist *src;
 180         struct scatterlist *dst;
 181
 182         void *__ctx[] CRYPTO_MINALIGN_ATTR;
 183 };
 184
 185 struct blkcipher_desc {
 186         struct crypto_blkcipher *tfm;
 187         void *info;
 188         u32 flags;
 189 };
 190
 191 struct cipher_desc {
 192         struct crypto_tfm *tfm;
 193         void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 194         unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
 195                              const u8 *src, unsigned int nbytes);
 196         void *info;
 197 };
 198
 199 struct hash_desc {
 200         struct crypto_hash *tfm;
 201         u32 flags;
 202 };
 203
 204 /*
 205  * Algorithms: modular crypto algorithm implementations, managed
 206  * via crypto_register_alg() and crypto_unregister_alg().
 207  */
 208 struct ablkcipher_alg {
 209         int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
 210                       unsigned int keylen);
 211         int (*encrypt)(struct ablkcipher_request *req);
 212         int (*decrypt)(struct ablkcipher_request *req);
 213         int (*givencrypt)(struct skcipher_givcrypt_request *req);
 214         int (*givdecrypt)(struct skcipher_givcrypt_request *req);
 215
 216         const char *geniv;
 217
 218         unsigned int min_keysize;
 219         unsigned int max_keysize;
 220         unsigned int ivsize;
 221 };
 222
 223 struct ahash_alg {
 224         int (*init)(struct ahash_request *req);
 225         int (*reinit)(struct ahash_request *req);
 226         int (*update)(struct ahash_request *req);
 227         int (*final)(struct ahash_request *req);
 228         int (*digest)(struct ahash_request *req);
 229         int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
 230                         unsigned int keylen);
 231
 232         unsigned int digestsize;
 233 };
 234
 235 struct aead_alg {
 236         int (*setkey)(struct crypto_aead *tfm, const u8 *key,
 237                       unsigned int keylen);
 238         int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
 239         int (*encrypt)(struct aead_request *req);
 240         int (*decrypt)(struct aead_request *req);
 241         int (*givencrypt)(struct aead_givcrypt_request *req);
 242         int (*givdecrypt)(struct aead_givcrypt_request *req);
 243
 244         const char *geniv;
 245
 246         unsigned int ivsize;
 247         unsigned int maxauthsize;
 248 };
 249
 250 struct blkcipher_alg {
 251         int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
 252                       unsigned int keylen);
 253         int (*encrypt)(struct blkcipher_desc *desc,
 254                        struct scatterlist *dst, struct scatterlist *src,
 255                        unsigned int nbytes);
 256         int (*decrypt)(struct blkcipher_desc *desc,
 257                        struct scatterlist *dst, struct scatterlist *src,
 258                        unsigned int nbytes);
 259
 260         const char *geniv;
 261
 262         unsigned int min_keysize;
 263         unsigned int max_keysize;
 264         unsigned int ivsize;
 265 };
 266
 267 struct cipher_alg {
 268         unsigned int cia_min_keysize;
 269         unsigned int cia_max_keysize;
 270         int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
 271                           unsigned int keylen);
 272         void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 273         void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 274 };
 275
 276 struct digest_alg {
 277         unsigned int dia_digestsize;
 278         void (*dia_init)(struct crypto_tfm *tfm);
 279         void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
 280                            unsigned int len);
 281         void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
 282         int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
 283                           unsigned int keylen);
 284 };
 285
 286 struct hash_alg {
 287         int (*init)(struct hash_desc *desc);
 288         int (*update)(struct hash_desc *desc, struct scatterlist *sg,
 289                       unsigned int nbytes);
 290         int (*final)(struct hash_desc *desc, u8 *out);
 291         int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
 292                       unsigned int nbytes, u8 *out);
 293         int (*setkey)(struct crypto_hash *tfm, const u8 *key,
 294                       unsigned int keylen);
 295
 296         unsigned int digestsize;
 297 };
 298
 299 struct compress_alg {
 300         int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
 301                             unsigned int slen, u8 *dst, unsigned int *dlen);
 302         int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
 303                               unsigned int slen, u8 *dst, unsigned int *dlen);
 304 };
 305
 306 struct rng_alg {
 307         int (*rng_make_random)(struct crypto_rng *tfm, u8 *rdata,
 308                                unsigned int dlen);
 309         int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
 310
 311         unsigned int seedsize;
 312 };
 313
 314
 315 #define cra_ablkcipher  cra_u.ablkcipher
 316 #define cra_aead        cra_u.aead
 317 #define cra_blkcipher   cra_u.blkcipher
 318 #define cra_cipher      cra_u.cipher
 319 #define cra_digest      cra_u.digest
 320 #define cra_hash        cra_u.hash
 321 #define cra_ahash       cra_u.ahash
 322 #define cra_compress    cra_u.compress
 323 #define cra_rng         cra_u.rng
 324
 325 struct crypto_alg {
 326         struct list_head cra_list;
 327         struct list_head cra_users;
 328
 329         u32 cra_flags;
 330         unsigned int cra_blocksize;
 331         unsigned int cra_ctxsize;
 332         unsigned int cra_alignmask;
 333
 334         int cra_priority;
 335         atomic_t cra_refcnt;
 336
 337         char cra_name[CRYPTO_MAX_ALG_NAME];
 338         char cra_driver_name[CRYPTO_MAX_ALG_NAME];
 339
 340         const struct crypto_type *cra_type;
 341
 342         union {
 343                 struct ablkcipher_alg ablkcipher;
 344                 struct aead_alg aead;
 345                 struct blkcipher_alg blkcipher;
 346                 struct cipher_alg cipher;
 347                 struct digest_alg digest;
 348                 struct hash_alg hash;
 349                 struct ahash_alg ahash;
 350                 struct compress_alg compress;
 351                 struct rng_alg rng;
 352         } cra_u;
 353
 354         int (*cra_init)(struct crypto_tfm *tfm);
 355         void (*cra_exit)(struct crypto_tfm *tfm);
 356         void (*cra_destroy)(struct crypto_alg *alg);
 357
 358         struct module *cra_module;
 359 };
 360
 361 /*
 362  * Algorithm registration interface.
 363  */
 364 int crypto_register_alg(struct crypto_alg *alg);
 365 int crypto_unregister_alg(struct crypto_alg *alg);
 366
 367 /*
 368  * Algorithm query interface.
 369  */
 370 int crypto_has_alg(const char *name, u32 type, u32 mask);
 371
 372 /*
 373  * Transforms: user-instantiated objects which encapsulate algorithms
 374  * and core processing logic.  Managed via crypto_alloc_*() and
 375  * crypto_free_*(), as well as the various helpers below.
 376  */
 377
 378 struct ablkcipher_tfm {
 379         int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
 380                       unsigned int keylen);
 381         int (*encrypt)(struct ablkcipher_request *req);
 382         int (*decrypt)(struct ablkcipher_request *req);
 383         int (*givencrypt)(struct skcipher_givcrypt_request *req);
 384         int (*givdecrypt)(struct skcipher_givcrypt_request *req);
 385
 386         struct crypto_ablkcipher *base;
 387
 388         unsigned int ivsize;
 389         unsigned int reqsize;
 390 };
 391
 392 struct aead_tfm {
 393         int (*setkey)(struct crypto_aead *tfm, const u8 *key,
 394                       unsigned int keylen);
 395         int (*encrypt)(struct aead_request *req);
 396         int (*decrypt)(struct aead_request *req);
 397         int (*givencrypt)(struct aead_givcrypt_request *req);
 398         int (*givdecrypt)(struct aead_givcrypt_request *req);
 399
 400         struct crypto_aead *base;
 401
 402         unsigned int ivsize;
 403         unsigned int authsize;
 404         unsigned int reqsize;
 405 };
 406
 407 struct blkcipher_tfm {
 408         void *iv;
 409         int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
 410                       unsigned int keylen);
 411         int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
 412                        struct scatterlist *src, unsigned int nbytes);
 413         int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
 414                        struct scatterlist *src, unsigned int nbytes);
 415 };
 416
 417 struct cipher_tfm {
 418         int (*cit_setkey)(struct crypto_tfm *tfm,
 419                           const u8 *key, unsigned int keylen);
 420         void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 421         void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 422 };
 423
 424 struct hash_tfm {
 425         int (*init)(struct hash_desc *desc);
 426         int (*update)(struct hash_desc *desc,
 427                       struct scatterlist *sg, unsigned int nsg);
 428         int (*final)(struct hash_desc *desc, u8 *out);
 429         int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
 430                       unsigned int nsg, u8 *out);
 431         int (*setkey)(struct crypto_hash *tfm, const u8 *key,
 432                       unsigned int keylen);
 433         unsigned int digestsize;
 434 };
 435
 436 struct ahash_tfm {
 437         int (*init)(struct ahash_request *req);
 438         int (*update)(struct ahash_request *req);
 439         int (*final)(struct ahash_request *req);
 440         int (*digest)(struct ahash_request *req);
 441         int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
 442                         unsigned int keylen);
 443
 444         unsigned int digestsize;
 445         unsigned int reqsize;
 446 };
 447
 448 struct compress_tfm {
 449         int (*cot_compress)(struct crypto_tfm *tfm,
 450                             const u8 *src, unsigned int slen,
 451                             u8 *dst, unsigned int *dlen);
 452         int (*cot_decompress)(struct crypto_tfm *tfm,
 453                               const u8 *src, unsigned int slen,
 454                               u8 *dst, unsigned int *dlen);
 455 };
 456
 457 struct rng_tfm {
 458         int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata,
 459                               unsigned int dlen);
 460         int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
 461 };
 462
 463 #define crt_ablkcipher  crt_u.ablkcipher
 464 #define crt_aead        crt_u.aead
 465 #define crt_blkcipher   crt_u.blkcipher
 466 #define crt_cipher      crt_u.cipher
 467 #define crt_hash        crt_u.hash
 468 #define crt_ahash       crt_u.ahash
 469 #define crt_compress    crt_u.compress
 470 #define crt_rng         crt_u.rng
 471
 472 struct crypto_tfm {
 473
 474         u32 crt_flags;
 475
 476         union {
 477                 struct ablkcipher_tfm ablkcipher;
 478                 struct aead_tfm aead;
 479                 struct blkcipher_tfm blkcipher;
 480                 struct cipher_tfm cipher;
 481                 struct hash_tfm hash;
 482                 struct ahash_tfm ahash;
 483                 struct compress_tfm compress;
 484                 struct rng_tfm rng;
 485         } crt_u;
 486
 487         void (*exit)(struct crypto_tfm *tfm);
 488
 489         struct crypto_alg *__crt_alg;
 490
 491         void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
 492 };
 493
 494 struct crypto_ablkcipher {
 495         struct crypto_tfm base;
 496 };
 497
 498 struct crypto_aead {
 499         struct crypto_tfm base;
 500 };
 501
 502 struct crypto_blkcipher {
 503         struct crypto_tfm base;
 504 };
 505
 506 struct crypto_cipher {
 507         struct crypto_tfm base;
 508 };
 509
 510 struct crypto_comp {
 511         struct crypto_tfm base;
 512 };
 513
 514 struct crypto_hash {
 515         struct crypto_tfm base;
 516 };
 517
 518 struct crypto_rng {
 519         struct crypto_tfm base;
 520 };
 521
 522 enum {
 523         CRYPTOA_UNSPEC,
 524         CRYPTOA_ALG,
 525         CRYPTOA_TYPE,
 526         CRYPTOA_U32,
 527         __CRYPTOA_MAX,
 528 };
 529
 530 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
 531
 532 /* Maximum number of (rtattr) parameters for each template. */
 533 #define CRYPTO_MAX_ATTRS 32
 534
 535 struct crypto_attr_alg {
 536         char name[CRYPTO_MAX_ALG_NAME];
 537 };
 538
 539 struct crypto_attr_type {
 540         u32 type;
 541         u32 mask;
 542 };
 543
 544 struct crypto_attr_u32 {
 545         u32 num;
 546 };
 547
 548 /*
 549  * Transform user interface.
 550  */
 551
 552 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
 553 void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm);
 554
 555 static inline void crypto_free_tfm(struct crypto_tfm *tfm)
 556 {
 557         return crypto_destroy_tfm(tfm, tfm);
 558 }
 559
 560 int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
 561
 562 /*
 563  * Transform helpers which query the underlying algorithm.
 564  */
 565 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
 566 {
 567         return tfm->__crt_alg->cra_name;
 568 }
 569
 570 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
 571 {
 572         return tfm->__crt_alg->cra_driver_name;
 573 }
 574
 575 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
 576 {
 577         return tfm->__crt_alg->cra_priority;
 578 }
 579
 580 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
 581 {
 582         return module_name(tfm->__crt_alg->cra_module);
 583 }
 584
 585 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
 586 {
 587         return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
 588 }
 589
 590 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
 591 {
 592         return tfm->__crt_alg->cra_blocksize;
 593 }
 594
 595 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
 596 {
 597         return tfm->__crt_alg->cra_alignmask;
 598 }
 599
 600 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
 601 {
 602         return tfm->crt_flags;
 603 }
 604
 605 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
 606 {
 607         tfm->crt_flags |= flags;
 608 }
 609
 610 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
 611 {
 612         tfm->crt_flags &= ~flags;
 613 }
 614
 615 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
 616 {
 617         return tfm->__crt_ctx;
 618 }
 619
 620 static inline unsigned int crypto_tfm_ctx_alignment(void)
 621 {
 622         struct crypto_tfm *tfm;
 623         return __alignof__(tfm->__crt_ctx);
 624 }
 625
 626 /*
 627  * API wrappers.
 628  */
 629 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
 630         struct crypto_tfm *tfm)
 631 {
 632         return (struct crypto_ablkcipher *)tfm;
 633 }
 634
 635 static inline u32 crypto_skcipher_type(u32 type)
 636 {
 637         type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
 638         type |= CRYPTO_ALG_TYPE_BLKCIPHER;
 639         return type;
 640 }
 641
 642 static inline u32 crypto_skcipher_mask(u32 mask)
 643 {
 644         mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
 645         mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
 646         return mask;
 647 }
 648
 649 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
 650                                                   u32 type, u32 mask);
 651
 652 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
 653         struct crypto_ablkcipher *tfm)
 654 {
 655         return &tfm->base;
 656 }
 657
 658 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
 659 {
 660         crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
 661 }
 662
 663 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
 664                                         u32 mask)
 665 {
 666         return crypto_has_alg(alg_name, crypto_skcipher_type(type),
 667                               crypto_skcipher_mask(mask));
 668 }
 669
 670 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
 671         struct crypto_ablkcipher *tfm)
 672 {
 673         return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
 674 }
 675
 676 static inline unsigned int crypto_ablkcipher_ivsize(
 677         struct crypto_ablkcipher *tfm)
 678 {
 679         return crypto_ablkcipher_crt(tfm)->ivsize;
 680 }
 681
 682 static inline unsigned int crypto_ablkcipher_blocksize(
 683         struct crypto_ablkcipher *tfm)
 684 {
 685         return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
 686 }
 687
 688 static inline unsigned int crypto_ablkcipher_alignmask(
 689         struct crypto_ablkcipher *tfm)
 690 {
 691         return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
 692 }
 693
 694 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
 695 {
 696         return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
 697 }
 698
 699 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
 700                                                u32 flags)
 701 {
 702         crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
 703 }
 704
 705 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
 706                                                  u32 flags)
 707 {
 708         crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
 709 }
 710
 711 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
 712                                            const u8 *key, unsigned int keylen)
 713 {
 714         struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
 715
 716         return crt->setkey(crt->base, key, keylen);
 717 }
 718
 719 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
 720         struct ablkcipher_request *req)
 721 {
 722         return __crypto_ablkcipher_cast(req->base.tfm);
 723 }
 724
 725 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
 726 {
 727         struct ablkcipher_tfm *crt =
 728                 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
 729         return crt->encrypt(req);
 730 }
 731
 732 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
 733 {
 734         struct ablkcipher_tfm *crt =
 735                 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
 736         return crt->decrypt(req);
 737 }
 738
 739 static inline unsigned int crypto_ablkcipher_reqsize(
 740         struct crypto_ablkcipher *tfm)
 741 {
 742         return crypto_ablkcipher_crt(tfm)->reqsize;
 743 }
 744
 745 static inline void ablkcipher_request_set_tfm(
 746         struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
 747 {
 748         req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
 749 }
 750
 751 static inline struct ablkcipher_request *ablkcipher_request_cast(
 752         struct crypto_async_request *req)
 753 {
 754         return container_of(req, struct ablkcipher_request, base);
 755 }
 756
 757 static inline struct ablkcipher_request *ablkcipher_request_alloc(
 758         struct crypto_ablkcipher *tfm, gfp_t gfp)
 759 {
 760         struct ablkcipher_request *req;
 761
 762         req = kmalloc(sizeof(struct ablkcipher_request) +
 763                       crypto_ablkcipher_reqsize(tfm), gfp);
 764
 765         if (likely(req))
 766                 ablkcipher_request_set_tfm(req, tfm);
 767
 768         return req;
 769 }
 770
 771 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
 772 {
 773         kfree(req);
 774 }
 775
 776 static inline void ablkcipher_request_set_callback(
 777         struct ablkcipher_request *req,
 778         u32 flags, crypto_completion_t complete, void *data)
 779 {
 780         req->base.complete = complete;
 781         req->base.data = data;
 782         req->base.flags = flags;
 783 }
 784
 785 static inline void ablkcipher_request_set_crypt(
 786         struct ablkcipher_request *req,
 787         struct scatterlist *src, struct scatterlist *dst,
 788         unsigned int nbytes, void *iv)
 789 {
 790         req->src = src;
 791         req->dst = dst;
 792         req->nbytes = nbytes;
 793         req->info = iv;
 794 }
 795
 796 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
 797 {
 798         return (struct crypto_aead *)tfm;
 799 }
 800
 801 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
 802
 803 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
 804 {
 805         return &tfm->base;
 806 }
 807
 808 static inline void crypto_free_aead(struct crypto_aead *tfm)
 809 {
 810         crypto_free_tfm(crypto_aead_tfm(tfm));
 811 }
 812
 813 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
 814 {
 815         return &crypto_aead_tfm(tfm)->crt_aead;
 816 }
 817
 818 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
 819 {
 820         return crypto_aead_crt(tfm)->ivsize;
 821 }
 822
 823 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
 824 {
 825         return crypto_aead_crt(tfm)->authsize;
 826 }
 827
 828 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
 829 {
 830         return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
 831 }
 832
 833 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
 834 {
 835         return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
 836 }
 837
 838 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
 839 {
 840         return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
 841 }
 842
 843 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
 844 {
 845         crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
 846 }
 847
 848 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
 849 {
 850         crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
 851 }
 852
 853 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
 854                                      unsigned int keylen)
 855 {
 856         struct aead_tfm *crt = crypto_aead_crt(tfm);
 857
 858         return crt->setkey(crt->base, key, keylen);
 859 }
 860
 861 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
 862
 863 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
 864 {
 865         return __crypto_aead_cast(req->base.tfm);
 866 }
 867
 868 static inline int crypto_aead_encrypt(struct aead_request *req)
 869 {
 870         return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
 871 }
 872
 873 static inline int crypto_aead_decrypt(struct aead_request *req)
 874 {
 875         return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
 876 }
 877
 878 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
 879 {
 880         return crypto_aead_crt(tfm)->reqsize;
 881 }
 882
 883 static inline void aead_request_set_tfm(struct aead_request *req,
 884                                         struct crypto_aead *tfm)
 885 {
 886         req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
 887 }
 888
 889 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
 890                                                       gfp_t gfp)
 891 {
 892         struct aead_request *req;
 893
 894         req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
 895
 896         if (likely(req))
 897                 aead_request_set_tfm(req, tfm);
 898
 899         return req;
 900 }
 901
 902 static inline void aead_request_free(struct aead_request *req)
 903 {
 904         kfree(req);
 905 }
 906
 907 static inline void aead_request_set_callback(struct aead_request *req,
 908                                              u32 flags,
 909                                              crypto_completion_t complete,
 910                                              void *data)
 911 {
 912         req->base.complete = complete;
 913         req->base.data = data;
 914         req->base.flags = flags;
 915 }
 916
 917 static inline void aead_request_set_crypt(struct aead_request *req,
 918                                           struct scatterlist *src,
 919                                           struct scatterlist *dst,
 920                                           unsigned int cryptlen, u8 *iv)
 921 {
 922         req->src = src;
 923         req->dst = dst;
 924         req->cryptlen = cryptlen;
 925         req->iv = iv;
 926 }
 927
 928 static inline void aead_request_set_assoc(struct aead_request *req,
 929                                           struct scatterlist *assoc,
 930                                           unsigned int assoclen)
 931 {
 932         req->assoc = assoc;
 933         req->assoclen = assoclen;
 934 }
 935
 936 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
 937         struct crypto_tfm *tfm)
 938 {
 939         return (struct crypto_blkcipher *)tfm;
 940 }
 941
 942 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
 943         struct crypto_tfm *tfm)
 944 {
 945         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
 946         return __crypto_blkcipher_cast(tfm);
 947 }
 948
 949 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
 950         const char *alg_name, u32 type, u32 mask)
 951 {
 952         type &= ~CRYPTO_ALG_TYPE_MASK;
 953         type |= CRYPTO_ALG_TYPE_BLKCIPHER;
 954         mask |= CRYPTO_ALG_TYPE_MASK;
 955
 956         return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
 957 }
 958
 959 static inline struct crypto_tfm *crypto_blkcipher_tfm(
 960         struct crypto_blkcipher *tfm)
 961 {
 962         return &tfm->base;
 963 }
 964
 965 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
 966 {
 967         crypto_free_tfm(crypto_blkcipher_tfm(tfm));
 968 }
 969
 970 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
 971 {
 972         type &= ~CRYPTO_ALG_TYPE_MASK;
 973         type |= CRYPTO_ALG_TYPE_BLKCIPHER;
 974         mask |= CRYPTO_ALG_TYPE_MASK;
 975
 976         return crypto_has_alg(alg_name, type, mask);
 977 }
 978
 979 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
 980 {
 981         return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
 982 }
 983
 984 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
 985         struct crypto_blkcipher *tfm)
 986 {
 987         return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
 988 }
 989
 990 static inline struct blkcipher_alg *crypto_blkcipher_alg(
 991         struct crypto_blkcipher *tfm)
 992 {
 993         return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
 994 }
 995
 996 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
 997 {
 998         return crypto_blkcipher_alg(tfm)->ivsize;
 999 }
1000
1001 static inline unsigned int crypto_blkcipher_blocksize(
1002         struct crypto_blkcipher *tfm)
1003 {
1004         return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
1005 }
1006
1007 static inline unsigned int crypto_blkcipher_alignmask(
1008         struct crypto_blkcipher *tfm)
1009 {
1010         return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
1011 }
1012
1013 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
1014 {
1015         return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
1016 }
1017
1018 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
1019                                               u32 flags)
1020 {
1021         crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
1022 }
1023
1024 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
1025                                                 u32 flags)
1026 {
1027         crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
1028 }
1029
1030 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
1031                                           const u8 *key, unsigned int keylen)
1032 {
1033         return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
1034                                                  key, keylen);
1035 }
1036
1037 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
1038                                            struct scatterlist *dst,
1039                                            struct scatterlist *src,
1040                                            unsigned int nbytes)
1041 {
1042         desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1043         return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1044 }
1045
1046 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
1047                                               struct scatterlist *dst,
1048                                               struct scatterlist *src,
1049                                               unsigned int nbytes)
1050 {
1051         return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1052 }
1053
1054 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
1055                                            struct scatterlist *dst,
1056                                            struct scatterlist *src,
1057                                            unsigned int nbytes)
1058 {
1059         desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1060         return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1061 }
1062
1063 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
1064                                               struct scatterlist *dst,
1065                                               struct scatterlist *src,
1066                                               unsigned int nbytes)
1067 {
1068         return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1069 }
1070
1071 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
1072                                            const u8 *src, unsigned int len)
1073 {
1074         memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1075 }
1076
1077 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1078                                            u8 *dst, unsigned int len)
1079 {
1080         memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1081 }
1082
1083 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1084 {
1085         return (struct crypto_cipher *)tfm;
1086 }
1087
1088 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1089 {
1090         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1091         return __crypto_cipher_cast(tfm);
1092 }
1093
1094 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1095                                                         u32 type, u32 mask)
1096 {
1097         type &= ~CRYPTO_ALG_TYPE_MASK;
1098         type |= CRYPTO_ALG_TYPE_CIPHER;
1099         mask |= CRYPTO_ALG_TYPE_MASK;
1100
1101         return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1102 }
1103
1104 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1105 {
1106         return &tfm->base;
1107 }
1108
1109 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1110 {
1111         crypto_free_tfm(crypto_cipher_tfm(tfm));
1112 }
1113
1114 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1115 {
1116         type &= ~CRYPTO_ALG_TYPE_MASK;
1117         type |= CRYPTO_ALG_TYPE_CIPHER;
1118         mask |= CRYPTO_ALG_TYPE_MASK;
1119
1120         return crypto_has_alg(alg_name, type, mask);
1121 }
1122
1123 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1124 {
1125         return &crypto_cipher_tfm(tfm)->crt_cipher;
1126 }
1127
1128 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1129 {
1130         return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1131 }
1132
1133 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1134 {
1135         return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1136 }
1137
1138 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1139 {
1140         return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1141 }
1142
1143 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1144                                            u32 flags)
1145 {
1146         crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1147 }
1148
1149 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1150                                              u32 flags)
1151 {
1152         crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1153 }
1154
1155 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1156                                        const u8 *key, unsigned int keylen)
1157 {
1158         return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1159                                                   key, keylen);
1160 }
1161
1162 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1163                                              u8 *dst, const u8 *src)
1164 {
1165         crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1166                                                 dst, src);
1167 }
1168
1169 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1170                                              u8 *dst, const u8 *src)
1171 {
1172         crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1173                                                 dst, src);
1174 }
1175
1176 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1177 {
1178         return (struct crypto_hash *)tfm;
1179 }
1180
1181 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1182 {
1183         BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1184                CRYPTO_ALG_TYPE_HASH_MASK);
1185         return __crypto_hash_cast(tfm);
1186 }
1187
1188 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1189                                                     u32 type, u32 mask)
1190 {
1191         type &= ~CRYPTO_ALG_TYPE_MASK;
1192         mask &= ~CRYPTO_ALG_TYPE_MASK;
1193         type |= CRYPTO_ALG_TYPE_HASH;
1194         mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1195
1196         return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1197 }
1198
1199 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1200 {
1201         return &tfm->base;
1202 }
1203
1204 static inline void crypto_free_hash(struct crypto_hash *tfm)
1205 {
1206         crypto_free_tfm(crypto_hash_tfm(tfm));
1207 }
1208
1209 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1210 {
1211         type &= ~CRYPTO_ALG_TYPE_MASK;
1212         mask &= ~CRYPTO_ALG_TYPE_MASK;
1213         type |= CRYPTO_ALG_TYPE_HASH;
1214         mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1215
1216         return crypto_has_alg(alg_name, type, mask);
1217 }
1218
1219 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1220 {
1221         return &crypto_hash_tfm(tfm)->crt_hash;
1222 }
1223
1224 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1225 {
1226         return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1227 }
1228
1229 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1230 {
1231         return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1232 }
1233
1234 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1235 {
1236         return crypto_hash_crt(tfm)->digestsize;
1237 }
1238
1239 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1240 {
1241         return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1242 }
1243
1244 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1245 {
1246         crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1247 }
1248
1249 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1250 {
1251         crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1252 }
1253
1254 static inline int crypto_hash_init(struct hash_desc *desc)
1255 {
1256         return crypto_hash_crt(desc->tfm)->init(desc);
1257 }
1258
1259 static inline int crypto_hash_update(struct hash_desc *desc,
1260                                      struct scatterlist *sg,
1261                                      unsigned int nbytes)
1262 {
1263         return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1264 }
1265
1266 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1267 {
1268         return crypto_hash_crt(desc->tfm)->final(desc, out);
1269 }
1270
1271 static inline int crypto_hash_digest(struct hash_desc *desc,
1272                                      struct scatterlist *sg,
1273                                      unsigned int nbytes, u8 *out)
1274 {
1275         return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1276 }
1277
1278 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1279                                      const u8 *key, unsigned int keylen)
1280 {
1281         return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1282 }
1283
1284 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1285 {
1286         return (struct crypto_comp *)tfm;
1287 }
1288
1289 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1290 {
1291         BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1292                CRYPTO_ALG_TYPE_MASK);
1293         return __crypto_comp_cast(tfm);
1294 }
1295
1296 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1297                                                     u32 type, u32 mask)
1298 {
1299         type &= ~CRYPTO_ALG_TYPE_MASK;
1300         type |= CRYPTO_ALG_TYPE_COMPRESS;
1301         mask |= CRYPTO_ALG_TYPE_MASK;
1302
1303         return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1304 }
1305
1306 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1307 {
1308         return &tfm->base;
1309 }
1310
1311 static inline void crypto_free_comp(struct crypto_comp *tfm)
1312 {
1313         crypto_free_tfm(crypto_comp_tfm(tfm));
1314 }
1315
1316 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1317 {
1318         type &= ~CRYPTO_ALG_TYPE_MASK;
1319         type |= CRYPTO_ALG_TYPE_COMPRESS;
1320         mask |= CRYPTO_ALG_TYPE_MASK;
1321
1322         return crypto_has_alg(alg_name, type, mask);
1323 }
1324
1325 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1326 {
1327         return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1328 }
1329
1330 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1331 {
1332         return &crypto_comp_tfm(tfm)->crt_compress;
1333 }
1334
1335 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1336                                        const u8 *src, unsigned int slen,
1337                                        u8 *dst, unsigned int *dlen)
1338 {
1339         return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1340                                                   src, slen, dst, dlen);
1341 }
1342
1343 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1344                                          const u8 *src, unsigned int slen,
1345                                          u8 *dst, unsigned int *dlen)
1346 {
1347         return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1348                                                     src, slen, dst, dlen);
1349 }
1350
1351 #endif  /* _LINUX_CRYPTO_H */
1352