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TOMOYO Linux Cross Reference
Linux/include/linux/crypto.h

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  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 <linux/atomic.h>
 21 #include <linux/kernel.h>
 22 #include <linux/list.h>
 23 #include <linux/bug.h>
 24 #include <linux/slab.h>
 25 #include <linux/string.h>
 26 #include <linux/uaccess.h>
 27 
 28 /*
 29  * Autoloaded crypto modules should only use a prefixed name to avoid allowing
 30  * arbitrary modules to be loaded. Loading from userspace may still need the
 31  * unprefixed names, so retains those aliases as well.
 32  * This uses __MODULE_INFO directly instead of MODULE_ALIAS because pre-4.3
 33  * gcc (e.g. avr32 toolchain) uses __LINE__ for uniqueness, and this macro
 34  * expands twice on the same line. Instead, use a separate base name for the
 35  * alias.
 36  */
 37 #define MODULE_ALIAS_CRYPTO(name)       \
 38                 __MODULE_INFO(alias, alias_userspace, name);    \
 39                 __MODULE_INFO(alias, alias_crypto, "crypto-" name)
 40 
 41 /*
 42  * Algorithm masks and types.
 43  */
 44 #define CRYPTO_ALG_TYPE_MASK            0x0000000f
 45 #define CRYPTO_ALG_TYPE_CIPHER          0x00000001
 46 #define CRYPTO_ALG_TYPE_COMPRESS        0x00000002
 47 #define CRYPTO_ALG_TYPE_AEAD            0x00000003
 48 #define CRYPTO_ALG_TYPE_BLKCIPHER       0x00000004
 49 #define CRYPTO_ALG_TYPE_ABLKCIPHER      0x00000005
 50 #define CRYPTO_ALG_TYPE_GIVCIPHER       0x00000006
 51 #define CRYPTO_ALG_TYPE_DIGEST          0x00000008
 52 #define CRYPTO_ALG_TYPE_HASH            0x00000008
 53 #define CRYPTO_ALG_TYPE_SHASH           0x00000009
 54 #define CRYPTO_ALG_TYPE_AHASH           0x0000000a
 55 #define CRYPTO_ALG_TYPE_RNG             0x0000000c
 56 #define CRYPTO_ALG_TYPE_PCOMPRESS       0x0000000f
 57 
 58 #define CRYPTO_ALG_TYPE_HASH_MASK       0x0000000e
 59 #define CRYPTO_ALG_TYPE_AHASH_MASK      0x0000000c
 60 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK  0x0000000c
 61 
 62 #define CRYPTO_ALG_LARVAL               0x00000010
 63 #define CRYPTO_ALG_DEAD                 0x00000020
 64 #define CRYPTO_ALG_DYING                0x00000040
 65 #define CRYPTO_ALG_ASYNC                0x00000080
 66 
 67 /*
 68  * Set this bit if and only if the algorithm requires another algorithm of
 69  * the same type to handle corner cases.
 70  */
 71 #define CRYPTO_ALG_NEED_FALLBACK        0x00000100
 72 
 73 /*
 74  * This bit is set for symmetric key ciphers that have already been wrapped
 75  * with a generic IV generator to prevent them from being wrapped again.
 76  */
 77 #define CRYPTO_ALG_GENIV                0x00000200
 78 
 79 /*
 80  * Set if the algorithm has passed automated run-time testing.  Note that
 81  * if there is no run-time testing for a given algorithm it is considered
 82  * to have passed.
 83  */
 84 
 85 #define CRYPTO_ALG_TESTED               0x00000400
 86 
 87 /*
 88  * Set if the algorithm is an instance that is build from templates.
 89  */
 90 #define CRYPTO_ALG_INSTANCE             0x00000800
 91 
 92 /* Set this bit if the algorithm provided is hardware accelerated but
 93  * not available to userspace via instruction set or so.
 94  */
 95 #define CRYPTO_ALG_KERN_DRIVER_ONLY     0x00001000
 96 
 97 /*
 98  * Transform masks and values (for crt_flags).
 99  */
100 #define CRYPTO_TFM_REQ_MASK             0x000fff00
101 #define CRYPTO_TFM_RES_MASK             0xfff00000
102 
103 #define CRYPTO_TFM_REQ_WEAK_KEY         0x00000100
104 #define CRYPTO_TFM_REQ_MAY_SLEEP        0x00000200
105 #define CRYPTO_TFM_REQ_MAY_BACKLOG      0x00000400
106 #define CRYPTO_TFM_RES_WEAK_KEY         0x00100000
107 #define CRYPTO_TFM_RES_BAD_KEY_LEN      0x00200000
108 #define CRYPTO_TFM_RES_BAD_KEY_SCHED    0x00400000
109 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN    0x00800000
110 #define CRYPTO_TFM_RES_BAD_FLAGS        0x01000000
111 
112 /*
113  * Miscellaneous stuff.
114  */
115 #define CRYPTO_MAX_ALG_NAME             64
116 
117 /*
118  * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
119  * declaration) is used to ensure that the crypto_tfm context structure is
120  * aligned correctly for the given architecture so that there are no alignment
121  * faults for C data types.  In particular, this is required on platforms such
122  * as arm where pointers are 32-bit aligned but there are data types such as
123  * u64 which require 64-bit alignment.
124  */
125 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
126 
127 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
128 
129 struct scatterlist;
130 struct crypto_ablkcipher;
131 struct crypto_async_request;
132 struct crypto_aead;
133 struct crypto_blkcipher;
134 struct crypto_hash;
135 struct crypto_rng;
136 struct crypto_tfm;
137 struct crypto_type;
138 struct aead_givcrypt_request;
139 struct skcipher_givcrypt_request;
140 
141 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
142 
143 struct crypto_async_request {
144         struct list_head list;
145         crypto_completion_t complete;
146         void *data;
147         struct crypto_tfm *tfm;
148 
149         u32 flags;
150 };
151 
152 struct ablkcipher_request {
153         struct crypto_async_request base;
154 
155         unsigned int nbytes;
156 
157         void *info;
158 
159         struct scatterlist *src;
160         struct scatterlist *dst;
161 
162         void *__ctx[] CRYPTO_MINALIGN_ATTR;
163 };
164 
165 /**
166  *      struct aead_request - AEAD request
167  *      @base: Common attributes for async crypto requests
168  *      @assoclen: Length in bytes of associated data for authentication
169  *      @cryptlen: Length of data to be encrypted or decrypted
170  *      @iv: Initialisation vector
171  *      @assoc: Associated data
172  *      @src: Source data
173  *      @dst: Destination data
174  *      @__ctx: Start of private context data
175  */
176 struct aead_request {
177         struct crypto_async_request base;
178 
179         unsigned int assoclen;
180         unsigned int cryptlen;
181 
182         u8 *iv;
183 
184         struct scatterlist *assoc;
185         struct scatterlist *src;
186         struct scatterlist *dst;
187 
188         void *__ctx[] CRYPTO_MINALIGN_ATTR;
189 };
190 
191 struct blkcipher_desc {
192         struct crypto_blkcipher *tfm;
193         void *info;
194         u32 flags;
195 };
196 
197 struct cipher_desc {
198         struct crypto_tfm *tfm;
199         void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
200         unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
201                              const u8 *src, unsigned int nbytes);
202         void *info;
203 };
204 
205 struct hash_desc {
206         struct crypto_hash *tfm;
207         u32 flags;
208 };
209 
210 /*
211  * Algorithms: modular crypto algorithm implementations, managed
212  * via crypto_register_alg() and crypto_unregister_alg().
213  */
214 struct ablkcipher_alg {
215         int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
216                       unsigned int keylen);
217         int (*encrypt)(struct ablkcipher_request *req);
218         int (*decrypt)(struct ablkcipher_request *req);
219         int (*givencrypt)(struct skcipher_givcrypt_request *req);
220         int (*givdecrypt)(struct skcipher_givcrypt_request *req);
221 
222         const char *geniv;
223 
224         unsigned int min_keysize;
225         unsigned int max_keysize;
226         unsigned int ivsize;
227 };
228 
229 struct aead_alg {
230         int (*setkey)(struct crypto_aead *tfm, const u8 *key,
231                       unsigned int keylen);
232         int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
233         int (*encrypt)(struct aead_request *req);
234         int (*decrypt)(struct aead_request *req);
235         int (*givencrypt)(struct aead_givcrypt_request *req);
236         int (*givdecrypt)(struct aead_givcrypt_request *req);
237 
238         const char *geniv;
239 
240         unsigned int ivsize;
241         unsigned int maxauthsize;
242 };
243 
244 struct blkcipher_alg {
245         int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
246                       unsigned int keylen);
247         int (*encrypt)(struct blkcipher_desc *desc,
248                        struct scatterlist *dst, struct scatterlist *src,
249                        unsigned int nbytes);
250         int (*decrypt)(struct blkcipher_desc *desc,
251                        struct scatterlist *dst, struct scatterlist *src,
252                        unsigned int nbytes);
253 
254         const char *geniv;
255 
256         unsigned int min_keysize;
257         unsigned int max_keysize;
258         unsigned int ivsize;
259 };
260 
261 struct cipher_alg {
262         unsigned int cia_min_keysize;
263         unsigned int cia_max_keysize;
264         int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
265                           unsigned int keylen);
266         void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
267         void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
268 };
269 
270 struct compress_alg {
271         int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
272                             unsigned int slen, u8 *dst, unsigned int *dlen);
273         int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
274                               unsigned int slen, u8 *dst, unsigned int *dlen);
275 };
276 
277 struct rng_alg {
278         int (*rng_make_random)(struct crypto_rng *tfm, u8 *rdata,
279                                unsigned int dlen);
280         int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
281 
282         unsigned int seedsize;
283 };
284 
285 
286 #define cra_ablkcipher  cra_u.ablkcipher
287 #define cra_aead        cra_u.aead
288 #define cra_blkcipher   cra_u.blkcipher
289 #define cra_cipher      cra_u.cipher
290 #define cra_compress    cra_u.compress
291 #define cra_rng         cra_u.rng
292 
293 struct crypto_alg {
294         struct list_head cra_list;
295         struct list_head cra_users;
296 
297         u32 cra_flags;
298         unsigned int cra_blocksize;
299         unsigned int cra_ctxsize;
300         unsigned int cra_alignmask;
301 
302         int cra_priority;
303         atomic_t cra_refcnt;
304 
305         char cra_name[CRYPTO_MAX_ALG_NAME];
306         char cra_driver_name[CRYPTO_MAX_ALG_NAME];
307 
308         const struct crypto_type *cra_type;
309 
310         union {
311                 struct ablkcipher_alg ablkcipher;
312                 struct aead_alg aead;
313                 struct blkcipher_alg blkcipher;
314                 struct cipher_alg cipher;
315                 struct compress_alg compress;
316                 struct rng_alg rng;
317         } cra_u;
318 
319         int (*cra_init)(struct crypto_tfm *tfm);
320         void (*cra_exit)(struct crypto_tfm *tfm);
321         void (*cra_destroy)(struct crypto_alg *alg);
322         
323         struct module *cra_module;
324 };
325 
326 /*
327  * Algorithm registration interface.
328  */
329 int crypto_register_alg(struct crypto_alg *alg);
330 int crypto_unregister_alg(struct crypto_alg *alg);
331 int crypto_register_algs(struct crypto_alg *algs, int count);
332 int crypto_unregister_algs(struct crypto_alg *algs, int count);
333 
334 /*
335  * Algorithm query interface.
336  */
337 int crypto_has_alg(const char *name, u32 type, u32 mask);
338 
339 /*
340  * Transforms: user-instantiated objects which encapsulate algorithms
341  * and core processing logic.  Managed via crypto_alloc_*() and
342  * crypto_free_*(), as well as the various helpers below.
343  */
344 
345 struct ablkcipher_tfm {
346         int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
347                       unsigned int keylen);
348         int (*encrypt)(struct ablkcipher_request *req);
349         int (*decrypt)(struct ablkcipher_request *req);
350         int (*givencrypt)(struct skcipher_givcrypt_request *req);
351         int (*givdecrypt)(struct skcipher_givcrypt_request *req);
352 
353         struct crypto_ablkcipher *base;
354 
355         unsigned int ivsize;
356         unsigned int reqsize;
357 };
358 
359 struct aead_tfm {
360         int (*setkey)(struct crypto_aead *tfm, const u8 *key,
361                       unsigned int keylen);
362         int (*encrypt)(struct aead_request *req);
363         int (*decrypt)(struct aead_request *req);
364         int (*givencrypt)(struct aead_givcrypt_request *req);
365         int (*givdecrypt)(struct aead_givcrypt_request *req);
366 
367         struct crypto_aead *base;
368 
369         unsigned int ivsize;
370         unsigned int authsize;
371         unsigned int reqsize;
372 };
373 
374 struct blkcipher_tfm {
375         void *iv;
376         int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
377                       unsigned int keylen);
378         int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
379                        struct scatterlist *src, unsigned int nbytes);
380         int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
381                        struct scatterlist *src, unsigned int nbytes);
382 };
383 
384 struct cipher_tfm {
385         int (*cit_setkey)(struct crypto_tfm *tfm,
386                           const u8 *key, unsigned int keylen);
387         void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
388         void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
389 };
390 
391 struct hash_tfm {
392         int (*init)(struct hash_desc *desc);
393         int (*update)(struct hash_desc *desc,
394                       struct scatterlist *sg, unsigned int nsg);
395         int (*final)(struct hash_desc *desc, u8 *out);
396         int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
397                       unsigned int nsg, u8 *out);
398         int (*setkey)(struct crypto_hash *tfm, const u8 *key,
399                       unsigned int keylen);
400         unsigned int digestsize;
401 };
402 
403 struct compress_tfm {
404         int (*cot_compress)(struct crypto_tfm *tfm,
405                             const u8 *src, unsigned int slen,
406                             u8 *dst, unsigned int *dlen);
407         int (*cot_decompress)(struct crypto_tfm *tfm,
408                               const u8 *src, unsigned int slen,
409                               u8 *dst, unsigned int *dlen);
410 };
411 
412 struct rng_tfm {
413         int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata,
414                               unsigned int dlen);
415         int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
416 };
417 
418 #define crt_ablkcipher  crt_u.ablkcipher
419 #define crt_aead        crt_u.aead
420 #define crt_blkcipher   crt_u.blkcipher
421 #define crt_cipher      crt_u.cipher
422 #define crt_hash        crt_u.hash
423 #define crt_compress    crt_u.compress
424 #define crt_rng         crt_u.rng
425 
426 struct crypto_tfm {
427 
428         u32 crt_flags;
429         
430         union {
431                 struct ablkcipher_tfm ablkcipher;
432                 struct aead_tfm aead;
433                 struct blkcipher_tfm blkcipher;
434                 struct cipher_tfm cipher;
435                 struct hash_tfm hash;
436                 struct compress_tfm compress;
437                 struct rng_tfm rng;
438         } crt_u;
439 
440         void (*exit)(struct crypto_tfm *tfm);
441         
442         struct crypto_alg *__crt_alg;
443 
444         void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
445 };
446 
447 struct crypto_ablkcipher {
448         struct crypto_tfm base;
449 };
450 
451 struct crypto_aead {
452         struct crypto_tfm base;
453 };
454 
455 struct crypto_blkcipher {
456         struct crypto_tfm base;
457 };
458 
459 struct crypto_cipher {
460         struct crypto_tfm base;
461 };
462 
463 struct crypto_comp {
464         struct crypto_tfm base;
465 };
466 
467 struct crypto_hash {
468         struct crypto_tfm base;
469 };
470 
471 struct crypto_rng {
472         struct crypto_tfm base;
473 };
474 
475 enum {
476         CRYPTOA_UNSPEC,
477         CRYPTOA_ALG,
478         CRYPTOA_TYPE,
479         CRYPTOA_U32,
480         __CRYPTOA_MAX,
481 };
482 
483 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
484 
485 /* Maximum number of (rtattr) parameters for each template. */
486 #define CRYPTO_MAX_ATTRS 32
487 
488 struct crypto_attr_alg {
489         char name[CRYPTO_MAX_ALG_NAME];
490 };
491 
492 struct crypto_attr_type {
493         u32 type;
494         u32 mask;
495 };
496 
497 struct crypto_attr_u32 {
498         u32 num;
499 };
500 
501 /* 
502  * Transform user interface.
503  */
504  
505 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
506 void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm);
507 
508 static inline void crypto_free_tfm(struct crypto_tfm *tfm)
509 {
510         return crypto_destroy_tfm(tfm, tfm);
511 }
512 
513 int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
514 
515 /*
516  * Transform helpers which query the underlying algorithm.
517  */
518 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
519 {
520         return tfm->__crt_alg->cra_name;
521 }
522 
523 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
524 {
525         return tfm->__crt_alg->cra_driver_name;
526 }
527 
528 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
529 {
530         return tfm->__crt_alg->cra_priority;
531 }
532 
533 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
534 {
535         return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
536 }
537 
538 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
539 {
540         return tfm->__crt_alg->cra_blocksize;
541 }
542 
543 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
544 {
545         return tfm->__crt_alg->cra_alignmask;
546 }
547 
548 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
549 {
550         return tfm->crt_flags;
551 }
552 
553 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
554 {
555         tfm->crt_flags |= flags;
556 }
557 
558 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
559 {
560         tfm->crt_flags &= ~flags;
561 }
562 
563 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
564 {
565         return tfm->__crt_ctx;
566 }
567 
568 static inline unsigned int crypto_tfm_ctx_alignment(void)
569 {
570         struct crypto_tfm *tfm;
571         return __alignof__(tfm->__crt_ctx);
572 }
573 
574 /*
575  * API wrappers.
576  */
577 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
578         struct crypto_tfm *tfm)
579 {
580         return (struct crypto_ablkcipher *)tfm;
581 }
582 
583 static inline u32 crypto_skcipher_type(u32 type)
584 {
585         type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
586         type |= CRYPTO_ALG_TYPE_BLKCIPHER;
587         return type;
588 }
589 
590 static inline u32 crypto_skcipher_mask(u32 mask)
591 {
592         mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
593         mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
594         return mask;
595 }
596 
597 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
598                                                   u32 type, u32 mask);
599 
600 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
601         struct crypto_ablkcipher *tfm)
602 {
603         return &tfm->base;
604 }
605 
606 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
607 {
608         crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
609 }
610 
611 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
612                                         u32 mask)
613 {
614         return crypto_has_alg(alg_name, crypto_skcipher_type(type),
615                               crypto_skcipher_mask(mask));
616 }
617 
618 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
619         struct crypto_ablkcipher *tfm)
620 {
621         return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
622 }
623 
624 static inline unsigned int crypto_ablkcipher_ivsize(
625         struct crypto_ablkcipher *tfm)
626 {
627         return crypto_ablkcipher_crt(tfm)->ivsize;
628 }
629 
630 static inline unsigned int crypto_ablkcipher_blocksize(
631         struct crypto_ablkcipher *tfm)
632 {
633         return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
634 }
635 
636 static inline unsigned int crypto_ablkcipher_alignmask(
637         struct crypto_ablkcipher *tfm)
638 {
639         return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
640 }
641 
642 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
643 {
644         return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
645 }
646 
647 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
648                                                u32 flags)
649 {
650         crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
651 }
652 
653 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
654                                                  u32 flags)
655 {
656         crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
657 }
658 
659 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
660                                            const u8 *key, unsigned int keylen)
661 {
662         struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
663 
664         return crt->setkey(crt->base, key, keylen);
665 }
666 
667 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
668         struct ablkcipher_request *req)
669 {
670         return __crypto_ablkcipher_cast(req->base.tfm);
671 }
672 
673 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
674 {
675         struct ablkcipher_tfm *crt =
676                 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
677         return crt->encrypt(req);
678 }
679 
680 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
681 {
682         struct ablkcipher_tfm *crt =
683                 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
684         return crt->decrypt(req);
685 }
686 
687 static inline unsigned int crypto_ablkcipher_reqsize(
688         struct crypto_ablkcipher *tfm)
689 {
690         return crypto_ablkcipher_crt(tfm)->reqsize;
691 }
692 
693 static inline void ablkcipher_request_set_tfm(
694         struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
695 {
696         req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
697 }
698 
699 static inline struct ablkcipher_request *ablkcipher_request_cast(
700         struct crypto_async_request *req)
701 {
702         return container_of(req, struct ablkcipher_request, base);
703 }
704 
705 static inline struct ablkcipher_request *ablkcipher_request_alloc(
706         struct crypto_ablkcipher *tfm, gfp_t gfp)
707 {
708         struct ablkcipher_request *req;
709 
710         req = kmalloc(sizeof(struct ablkcipher_request) +
711                       crypto_ablkcipher_reqsize(tfm), gfp);
712 
713         if (likely(req))
714                 ablkcipher_request_set_tfm(req, tfm);
715 
716         return req;
717 }
718 
719 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
720 {
721         kzfree(req);
722 }
723 
724 static inline void ablkcipher_request_set_callback(
725         struct ablkcipher_request *req,
726         u32 flags, crypto_completion_t complete, void *data)
727 {
728         req->base.complete = complete;
729         req->base.data = data;
730         req->base.flags = flags;
731 }
732 
733 static inline void ablkcipher_request_set_crypt(
734         struct ablkcipher_request *req,
735         struct scatterlist *src, struct scatterlist *dst,
736         unsigned int nbytes, void *iv)
737 {
738         req->src = src;
739         req->dst = dst;
740         req->nbytes = nbytes;
741         req->info = iv;
742 }
743 
744 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
745 {
746         return (struct crypto_aead *)tfm;
747 }
748 
749 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
750 
751 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
752 {
753         return &tfm->base;
754 }
755 
756 static inline void crypto_free_aead(struct crypto_aead *tfm)
757 {
758         crypto_free_tfm(crypto_aead_tfm(tfm));
759 }
760 
761 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
762 {
763         return &crypto_aead_tfm(tfm)->crt_aead;
764 }
765 
766 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
767 {
768         return crypto_aead_crt(tfm)->ivsize;
769 }
770 
771 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
772 {
773         return crypto_aead_crt(tfm)->authsize;
774 }
775 
776 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
777 {
778         return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
779 }
780 
781 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
782 {
783         return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
784 }
785 
786 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
787 {
788         return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
789 }
790 
791 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
792 {
793         crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
794 }
795 
796 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
797 {
798         crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
799 }
800 
801 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
802                                      unsigned int keylen)
803 {
804         struct aead_tfm *crt = crypto_aead_crt(tfm);
805 
806         return crt->setkey(crt->base, key, keylen);
807 }
808 
809 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
810 
811 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
812 {
813         return __crypto_aead_cast(req->base.tfm);
814 }
815 
816 static inline int crypto_aead_encrypt(struct aead_request *req)
817 {
818         return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
819 }
820 
821 static inline int crypto_aead_decrypt(struct aead_request *req)
822 {
823         return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
824 }
825 
826 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
827 {
828         return crypto_aead_crt(tfm)->reqsize;
829 }
830 
831 static inline void aead_request_set_tfm(struct aead_request *req,
832                                         struct crypto_aead *tfm)
833 {
834         req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
835 }
836 
837 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
838                                                       gfp_t gfp)
839 {
840         struct aead_request *req;
841 
842         req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
843 
844         if (likely(req))
845                 aead_request_set_tfm(req, tfm);
846 
847         return req;
848 }
849 
850 static inline void aead_request_free(struct aead_request *req)
851 {
852         kzfree(req);
853 }
854 
855 static inline void aead_request_set_callback(struct aead_request *req,
856                                              u32 flags,
857                                              crypto_completion_t complete,
858                                              void *data)
859 {
860         req->base.complete = complete;
861         req->base.data = data;
862         req->base.flags = flags;
863 }
864 
865 static inline void aead_request_set_crypt(struct aead_request *req,
866                                           struct scatterlist *src,
867                                           struct scatterlist *dst,
868                                           unsigned int cryptlen, u8 *iv)
869 {
870         req->src = src;
871         req->dst = dst;
872         req->cryptlen = cryptlen;
873         req->iv = iv;
874 }
875 
876 static inline void aead_request_set_assoc(struct aead_request *req,
877                                           struct scatterlist *assoc,
878                                           unsigned int assoclen)
879 {
880         req->assoc = assoc;
881         req->assoclen = assoclen;
882 }
883 
884 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
885         struct crypto_tfm *tfm)
886 {
887         return (struct crypto_blkcipher *)tfm;
888 }
889 
890 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
891         struct crypto_tfm *tfm)
892 {
893         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
894         return __crypto_blkcipher_cast(tfm);
895 }
896 
897 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
898         const char *alg_name, u32 type, u32 mask)
899 {
900         type &= ~CRYPTO_ALG_TYPE_MASK;
901         type |= CRYPTO_ALG_TYPE_BLKCIPHER;
902         mask |= CRYPTO_ALG_TYPE_MASK;
903 
904         return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
905 }
906 
907 static inline struct crypto_tfm *crypto_blkcipher_tfm(
908         struct crypto_blkcipher *tfm)
909 {
910         return &tfm->base;
911 }
912 
913 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
914 {
915         crypto_free_tfm(crypto_blkcipher_tfm(tfm));
916 }
917 
918 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
919 {
920         type &= ~CRYPTO_ALG_TYPE_MASK;
921         type |= CRYPTO_ALG_TYPE_BLKCIPHER;
922         mask |= CRYPTO_ALG_TYPE_MASK;
923 
924         return crypto_has_alg(alg_name, type, mask);
925 }
926 
927 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
928 {
929         return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
930 }
931 
932 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
933         struct crypto_blkcipher *tfm)
934 {
935         return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
936 }
937 
938 static inline struct blkcipher_alg *crypto_blkcipher_alg(
939         struct crypto_blkcipher *tfm)
940 {
941         return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
942 }
943 
944 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
945 {
946         return crypto_blkcipher_alg(tfm)->ivsize;
947 }
948 
949 static inline unsigned int crypto_blkcipher_blocksize(
950         struct crypto_blkcipher *tfm)
951 {
952         return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
953 }
954 
955 static inline unsigned int crypto_blkcipher_alignmask(
956         struct crypto_blkcipher *tfm)
957 {
958         return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
959 }
960 
961 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
962 {
963         return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
964 }
965 
966 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
967                                               u32 flags)
968 {
969         crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
970 }
971 
972 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
973                                                 u32 flags)
974 {
975         crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
976 }
977 
978 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
979                                           const u8 *key, unsigned int keylen)
980 {
981         return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
982                                                  key, keylen);
983 }
984 
985 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
986                                            struct scatterlist *dst,
987                                            struct scatterlist *src,
988                                            unsigned int nbytes)
989 {
990         desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
991         return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
992 }
993 
994 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
995                                               struct scatterlist *dst,
996                                               struct scatterlist *src,
997                                               unsigned int nbytes)
998 {
999         return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1000 }
1001 
1002 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
1003                                            struct scatterlist *dst,
1004                                            struct scatterlist *src,
1005                                            unsigned int nbytes)
1006 {
1007         desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1008         return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1009 }
1010 
1011 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
1012                                               struct scatterlist *dst,
1013                                               struct scatterlist *src,
1014                                               unsigned int nbytes)
1015 {
1016         return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1017 }
1018 
1019 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
1020                                            const u8 *src, unsigned int len)
1021 {
1022         memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1023 }
1024 
1025 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1026                                            u8 *dst, unsigned int len)
1027 {
1028         memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1029 }
1030 
1031 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1032 {
1033         return (struct crypto_cipher *)tfm;
1034 }
1035 
1036 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1037 {
1038         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1039         return __crypto_cipher_cast(tfm);
1040 }
1041 
1042 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1043                                                         u32 type, u32 mask)
1044 {
1045         type &= ~CRYPTO_ALG_TYPE_MASK;
1046         type |= CRYPTO_ALG_TYPE_CIPHER;
1047         mask |= CRYPTO_ALG_TYPE_MASK;
1048 
1049         return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1050 }
1051 
1052 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1053 {
1054         return &tfm->base;
1055 }
1056 
1057 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1058 {
1059         crypto_free_tfm(crypto_cipher_tfm(tfm));
1060 }
1061 
1062 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1063 {
1064         type &= ~CRYPTO_ALG_TYPE_MASK;
1065         type |= CRYPTO_ALG_TYPE_CIPHER;
1066         mask |= CRYPTO_ALG_TYPE_MASK;
1067 
1068         return crypto_has_alg(alg_name, type, mask);
1069 }
1070 
1071 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1072 {
1073         return &crypto_cipher_tfm(tfm)->crt_cipher;
1074 }
1075 
1076 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1077 {
1078         return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1079 }
1080 
1081 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1082 {
1083         return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1084 }
1085 
1086 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1087 {
1088         return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1089 }
1090 
1091 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1092                                            u32 flags)
1093 {
1094         crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1095 }
1096 
1097 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1098                                              u32 flags)
1099 {
1100         crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1101 }
1102 
1103 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1104                                        const u8 *key, unsigned int keylen)
1105 {
1106         return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1107                                                   key, keylen);
1108 }
1109 
1110 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1111                                              u8 *dst, const u8 *src)
1112 {
1113         crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1114                                                 dst, src);
1115 }
1116 
1117 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1118                                              u8 *dst, const u8 *src)
1119 {
1120         crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1121                                                 dst, src);
1122 }
1123 
1124 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1125 {
1126         return (struct crypto_hash *)tfm;
1127 }
1128 
1129 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1130 {
1131         BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1132                CRYPTO_ALG_TYPE_HASH_MASK);
1133         return __crypto_hash_cast(tfm);
1134 }
1135 
1136 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1137                                                     u32 type, u32 mask)
1138 {
1139         type &= ~CRYPTO_ALG_TYPE_MASK;
1140         mask &= ~CRYPTO_ALG_TYPE_MASK;
1141         type |= CRYPTO_ALG_TYPE_HASH;
1142         mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1143 
1144         return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1145 }
1146 
1147 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1148 {
1149         return &tfm->base;
1150 }
1151 
1152 static inline void crypto_free_hash(struct crypto_hash *tfm)
1153 {
1154         crypto_free_tfm(crypto_hash_tfm(tfm));
1155 }
1156 
1157 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1158 {
1159         type &= ~CRYPTO_ALG_TYPE_MASK;
1160         mask &= ~CRYPTO_ALG_TYPE_MASK;
1161         type |= CRYPTO_ALG_TYPE_HASH;
1162         mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1163 
1164         return crypto_has_alg(alg_name, type, mask);
1165 }
1166 
1167 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1168 {
1169         return &crypto_hash_tfm(tfm)->crt_hash;
1170 }
1171 
1172 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1173 {
1174         return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1175 }
1176 
1177 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1178 {
1179         return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1180 }
1181 
1182 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1183 {
1184         return crypto_hash_crt(tfm)->digestsize;
1185 }
1186 
1187 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1188 {
1189         return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1190 }
1191 
1192 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1193 {
1194         crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1195 }
1196 
1197 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1198 {
1199         crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1200 }
1201 
1202 static inline int crypto_hash_init(struct hash_desc *desc)
1203 {
1204         return crypto_hash_crt(desc->tfm)->init(desc);
1205 }
1206 
1207 static inline int crypto_hash_update(struct hash_desc *desc,
1208                                      struct scatterlist *sg,
1209                                      unsigned int nbytes)
1210 {
1211         return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1212 }
1213 
1214 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1215 {
1216         return crypto_hash_crt(desc->tfm)->final(desc, out);
1217 }
1218 
1219 static inline int crypto_hash_digest(struct hash_desc *desc,
1220                                      struct scatterlist *sg,
1221                                      unsigned int nbytes, u8 *out)
1222 {
1223         return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1224 }
1225 
1226 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1227                                      const u8 *key, unsigned int keylen)
1228 {
1229         return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1230 }
1231 
1232 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1233 {
1234         return (struct crypto_comp *)tfm;
1235 }
1236 
1237 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1238 {
1239         BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1240                CRYPTO_ALG_TYPE_MASK);
1241         return __crypto_comp_cast(tfm);
1242 }
1243 
1244 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1245                                                     u32 type, u32 mask)
1246 {
1247         type &= ~CRYPTO_ALG_TYPE_MASK;
1248         type |= CRYPTO_ALG_TYPE_COMPRESS;
1249         mask |= CRYPTO_ALG_TYPE_MASK;
1250 
1251         return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1252 }
1253 
1254 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1255 {
1256         return &tfm->base;
1257 }
1258 
1259 static inline void crypto_free_comp(struct crypto_comp *tfm)
1260 {
1261         crypto_free_tfm(crypto_comp_tfm(tfm));
1262 }
1263 
1264 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1265 {
1266         type &= ~CRYPTO_ALG_TYPE_MASK;
1267         type |= CRYPTO_ALG_TYPE_COMPRESS;
1268         mask |= CRYPTO_ALG_TYPE_MASK;
1269 
1270         return crypto_has_alg(alg_name, type, mask);
1271 }
1272 
1273 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1274 {
1275         return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1276 }
1277 
1278 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1279 {
1280         return &crypto_comp_tfm(tfm)->crt_compress;
1281 }
1282 
1283 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1284                                        const u8 *src, unsigned int slen,
1285                                        u8 *dst, unsigned int *dlen)
1286 {
1287         return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1288                                                   src, slen, dst, dlen);
1289 }
1290 
1291 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1292                                          const u8 *src, unsigned int slen,
1293                                          u8 *dst, unsigned int *dlen)
1294 {
1295         return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1296                                                     src, slen, dst, dlen);
1297 }
1298 
1299 #endif  /* _LINUX_CRYPTO_H */
1300 
1301 

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