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