[deliverable/linux.git] / include / crypto / internal / hash.h

/*
 * Hash algorithms.
 * 
 * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option) 
 * any later version.
 *
 */

#ifndef _CRYPTO_INTERNAL_HASH_H
#define _CRYPTO_INTERNAL_HASH_H

#include <crypto/algapi.h>
#include <crypto/hash.h>

struct ahash_request;
struct scatterlist;

struct crypto_hash_walk {
	char *data;

	unsigned int offset;
	unsigned int alignmask;

	struct page *pg;
	unsigned int entrylen;

	unsigned int total;
	struct scatterlist *sg;

	unsigned int flags;
};

struct shash_instance {
	struct shash_alg alg;
};

struct crypto_shash_spawn {
	struct crypto_spawn base;
};

extern const struct crypto_type crypto_ahash_type;

int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
int crypto_hash_walk_first(struct ahash_request *req,
			   struct crypto_hash_walk *walk);
int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
				  struct crypto_hash_walk *walk,
				  struct scatterlist *sg, unsigned int len);

int crypto_register_shash(struct shash_alg *alg);
int crypto_unregister_shash(struct shash_alg *alg);
int shash_register_instance(struct crypto_template *tmpl,
			    struct shash_instance *inst);
void shash_free_instance(struct crypto_instance *inst);

int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
			    struct shash_alg *alg,
			    struct crypto_instance *inst);

struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask);

static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
{
	return crypto_tfm_ctx(&tfm->base);
}

static inline struct ahash_alg *crypto_ahash_alg(
	struct crypto_ahash *tfm)
{
	return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash;
}

static inline int ahash_enqueue_request(struct crypto_queue *queue,
					     struct ahash_request *request)
{
	return crypto_enqueue_request(queue, &request->base);
}

static inline struct ahash_request *ahash_dequeue_request(
	struct crypto_queue *queue)
{
	return ahash_request_cast(crypto_dequeue_request(queue));
}

static inline int ahash_tfm_in_queue(struct crypto_queue *queue,
					  struct crypto_ahash *tfm)
{
	return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm));
}

static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
{
	return crypto_tfm_ctx(&tfm->base);
}

static inline struct crypto_instance *shash_crypto_instance(
	struct shash_instance *inst)
{
	return container_of(&inst->alg.base, struct crypto_instance, alg);
}

static inline struct shash_instance *shash_instance(
	struct crypto_instance *inst)
{
	return container_of(__crypto_shash_alg(&inst->alg),
			    struct shash_instance, alg);
}

static inline void *shash_instance_ctx(struct shash_instance *inst)
{
	return crypto_instance_ctx(shash_crypto_instance(inst));
}

static inline struct shash_instance *shash_alloc_instance(
	const char *name, struct crypto_alg *alg)
{
	return crypto_alloc_instance2(name, alg,
				      sizeof(struct shash_alg) - sizeof(*alg));
}

static inline struct crypto_shash *crypto_spawn_shash(
	struct crypto_shash_spawn *spawn)
{
	return crypto_spawn_tfm2(&spawn->base);
}

static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
{
	return crypto_tfm_ctx_aligned(&tfm->base);
}

static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
{
	return container_of(tfm, struct crypto_shash, base);
}

#endif	/* _CRYPTO_INTERNAL_HASH_H */
Commit	Line	Data
20036252 HX	1	/*
	2	* Hash algorithms.
	3	*
	4	* Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the Free
	8	* Software Foundation; either version 2 of the License, or (at your option)
	9	* any later version.
	10	*
	11	*/
	12
	13	#ifndef _CRYPTO_INTERNAL_HASH_H
	14	#define _CRYPTO_INTERNAL_HASH_H
	15
	16	#include <crypto/algapi.h>
18e33e6d	17	#include <crypto/hash.h>
20036252 HX	18
	19	struct ahash_request;
	20	struct scatterlist;
	21
	22	struct crypto_hash_walk {
	23	char *data;
	24
	25	unsigned int offset;
	26	unsigned int alignmask;
	27
	28	struct page *pg;
	29	unsigned int entrylen;
	30
	31	unsigned int total;
	32	struct scatterlist *sg;
	33
	34	unsigned int flags;
	35	};
	36
2e4fddd8 HX	37	struct shash_instance {
	38	struct shash_alg alg;
	39	};
	40
94296999 HX	41	struct crypto_shash_spawn {
	42	struct crypto_spawn base;
	43	};
	44
18e33e6d HX	45	extern const struct crypto_type crypto_ahash_type;
18e33e6d HX	46
20036252 HX	47	int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
	48	int crypto_hash_walk_first(struct ahash_request *req,
	49	struct crypto_hash_walk *walk);
5f7082ed HX	50	int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
	51	struct crypto_hash_walk *walk,
	52	struct scatterlist *sg, unsigned int len);
20036252	53
7b5a080b HX	54	int crypto_register_shash(struct shash_alg *alg);
7b5a080b HX	55	int crypto_unregister_shash(struct shash_alg *alg);
619a6ebd HX	56	int shash_register_instance(struct crypto_template *tmpl,
619a6ebd HX	57	struct shash_instance *inst);
2e4fddd8 HX	58	void shash_free_instance(struct crypto_instance *inst);
2e4fddd8 HX	59
94296999 HX	60	int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
	61	struct shash_alg *alg,
	62	struct crypto_instance *inst);
	63
7d6f5640 HX	64	struct shash_alg shash_attr_alg(struct rtattr rta, u32 type, u32 mask);
7d6f5640 HX	65
18e33e6d HX	66	static inline void crypto_ahash_ctx(struct crypto_ahash tfm)
	67	{
	68	return crypto_tfm_ctx(&tfm->base);
	69	}
	70
	71	static inline struct ahash_alg *crypto_ahash_alg(
	72	struct crypto_ahash *tfm)
	73	{
	74	return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash;
	75	}
	76
	77	static inline int ahash_enqueue_request(struct crypto_queue *queue,
	78	struct ahash_request *request)
	79	{
	80	return crypto_enqueue_request(queue, &request->base);
	81	}
	82
	83	static inline struct ahash_request *ahash_dequeue_request(
	84	struct crypto_queue *queue)
	85	{
	86	return ahash_request_cast(crypto_dequeue_request(queue));
	87	}
	88
18e33e6d HX	89	static inline int ahash_tfm_in_queue(struct crypto_queue *queue,
	90	struct crypto_ahash *tfm)
	91	{
	92	return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm));
	93	}
	94
7b5a080b HX	95	static inline void crypto_shash_ctx(struct crypto_shash tfm)
	96	{
	97	return crypto_tfm_ctx(&tfm->base);
	98	}
	99
2e4fddd8 HX	100	static inline struct crypto_instance *shash_crypto_instance(
	101	struct shash_instance *inst)
	102	{
	103	return container_of(&inst->alg.base, struct crypto_instance, alg);
	104	}
	105
	106	static inline struct shash_instance *shash_instance(
	107	struct crypto_instance *inst)
	108	{
	109	return container_of(__crypto_shash_alg(&inst->alg),
	110	struct shash_instance, alg);
	111	}
	112
ef5d590c HX	113	static inline void shash_instance_ctx(struct shash_instance inst)
	114	{
	115	return crypto_instance_ctx(shash_crypto_instance(inst));
	116	}
	117
2e4fddd8 HX	118	static inline struct shash_instance *shash_alloc_instance(
	119	const char name, struct crypto_alg alg)
	120	{
	121	return crypto_alloc_instance2(name, alg,
	122	sizeof(struct shash_alg) - sizeof(*alg));
	123	}
	124
94296999 HX	125	static inline struct crypto_shash *crypto_spawn_shash(
	126	struct crypto_shash_spawn *spawn)
	127	{
	128	return crypto_spawn_tfm2(&spawn->base);
	129	}
	130
cde6263f HX	131	static inline void crypto_shash_ctx_aligned(struct crypto_shash tfm)
	132	{
	133	return crypto_tfm_ctx_aligned(&tfm->base);
	134	}
	135
0390e6ae HX	136	static inline struct crypto_shash __crypto_shash_cast(struct crypto_tfm tfm)
0390e6ae HX	137	{
113adefc	138	return container_of(tfm, struct crypto_shash, base);
0390e6ae HX	139	}
0390e6ae HX	140
20036252 HX	141	#endif /* _CRYPTO_INTERNAL_HASH_H */
20036252 HX	142