[deliverable/linux.git] / include / crypto / algapi.h

/*
 * Cryptographic API for algorithms (i.e., low-level API).
 *
 * Copyright (c) 2006 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_ALGAPI_H
#define _CRYPTO_ALGAPI_H

#include <linux/crypto.h>
#include <linux/list.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>

struct module;
struct rtattr;
struct seq_file;

struct crypto_type {
	unsigned int (*ctxsize)(struct crypto_alg *alg, u32 type, u32 mask);
	unsigned int (*extsize)(struct crypto_alg *alg);
	int (*init)(struct crypto_tfm *tfm, u32 type, u32 mask);
	int (*init_tfm)(struct crypto_tfm *tfm);
	void (*show)(struct seq_file *m, struct crypto_alg *alg);
	int (*report)(struct sk_buff *skb, struct crypto_alg *alg);
	struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask);

	unsigned int type;
	unsigned int maskclear;
	unsigned int maskset;
	unsigned int tfmsize;
};

struct crypto_instance {
	struct crypto_alg alg;

	struct crypto_template *tmpl;
	struct hlist_node list;

	void *__ctx[] CRYPTO_MINALIGN_ATTR;
};

struct crypto_template {
	struct list_head list;
	struct hlist_head instances;
	struct module *module;

	struct crypto_instance *(*alloc)(struct rtattr **tb);
	void (*free)(struct crypto_instance *inst);
	int (*create)(struct crypto_template *tmpl, struct rtattr **tb);

	char name[CRYPTO_MAX_ALG_NAME];
};

struct crypto_spawn {
	struct list_head list;
	struct crypto_alg *alg;
	struct crypto_instance *inst;
	const struct crypto_type *frontend;
	u32 mask;
};

struct crypto_queue {
	struct list_head list;
	struct list_head *backlog;

	unsigned int qlen;
	unsigned int max_qlen;
};

struct scatter_walk {
	struct scatterlist *sg;
	unsigned int offset;
};

struct blkcipher_walk {
	union {
		struct {
			struct page *page;
			unsigned long offset;
		} phys;

		struct {
			u8 *page;
			u8 *addr;
		} virt;
	} src, dst;

	struct scatter_walk in;
	unsigned int nbytes;

	struct scatter_walk out;
	unsigned int total;

	void *page;
	u8 *buffer;
	u8 *iv;

	int flags;
	unsigned int blocksize;
};

struct ablkcipher_walk {
	struct {
		struct page *page;
		unsigned int offset;
	} src, dst;

	struct scatter_walk	in;
	unsigned int		nbytes;
	struct scatter_walk	out;
	unsigned int		total;
	struct list_head	buffers;
	u8			*iv_buffer;
	u8			*iv;
	int			flags;
	unsigned int		blocksize;
};

extern const struct crypto_type crypto_ablkcipher_type;
extern const struct crypto_type crypto_aead_type;
extern const struct crypto_type crypto_blkcipher_type;

void crypto_mod_put(struct crypto_alg *alg);

int crypto_register_template(struct crypto_template *tmpl);
void crypto_unregister_template(struct crypto_template *tmpl);
struct crypto_template *crypto_lookup_template(const char *name);

int crypto_register_instance(struct crypto_template *tmpl,
			     struct crypto_instance *inst);
int crypto_unregister_instance(struct crypto_alg *alg);

int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
		      struct crypto_instance *inst, u32 mask);
int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg,
		       struct crypto_instance *inst,
		       const struct crypto_type *frontend);

void crypto_drop_spawn(struct crypto_spawn *spawn);
struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
				    u32 mask);
void *crypto_spawn_tfm2(struct crypto_spawn *spawn);

static inline void crypto_set_spawn(struct crypto_spawn *spawn,
				    struct crypto_instance *inst)
{
	spawn->inst = inst;
}

struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb);
int crypto_check_attr_type(struct rtattr **tb, u32 type);
const char *crypto_attr_alg_name(struct rtattr *rta);
struct crypto_alg *crypto_attr_alg2(struct rtattr *rta,
				    const struct crypto_type *frontend,
				    u32 type, u32 mask);

static inline struct crypto_alg *crypto_attr_alg(struct rtattr *rta,
						 u32 type, u32 mask)
{
	return crypto_attr_alg2(rta, NULL, type, mask);
}

int crypto_attr_u32(struct rtattr *rta, u32 *num);
void *crypto_alloc_instance2(const char *name, struct crypto_alg *alg,
			     unsigned int head);
struct crypto_instance *crypto_alloc_instance(const char *name,
					      struct crypto_alg *alg);

void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen);
int crypto_enqueue_request(struct crypto_queue *queue,
			   struct crypto_async_request *request);
void *__crypto_dequeue_request(struct crypto_queue *queue, unsigned int offset);
struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue);
int crypto_tfm_in_queue(struct crypto_queue *queue, struct crypto_tfm *tfm);

/* These functions require the input/output to be aligned as u32. */
void crypto_inc(u8 *a, unsigned int size);
void crypto_xor(u8 *dst, const u8 *src, unsigned int size);

int blkcipher_walk_done(struct blkcipher_desc *desc,
			struct blkcipher_walk *walk, int err);
int blkcipher_walk_virt(struct blkcipher_desc *desc,
			struct blkcipher_walk *walk);
int blkcipher_walk_phys(struct blkcipher_desc *desc,
			struct blkcipher_walk *walk);
int blkcipher_walk_virt_block(struct blkcipher_desc *desc,
			      struct blkcipher_walk *walk,
			      unsigned int blocksize);

int ablkcipher_walk_done(struct ablkcipher_request *req,
			 struct ablkcipher_walk *walk, int err);
int ablkcipher_walk_phys(struct ablkcipher_request *req,
			 struct ablkcipher_walk *walk);
void __ablkcipher_walk_complete(struct ablkcipher_walk *walk);

static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm)
{
	return PTR_ALIGN(crypto_tfm_ctx(tfm),
			 crypto_tfm_alg_alignmask(tfm) + 1);
}

static inline struct crypto_instance *crypto_tfm_alg_instance(
	struct crypto_tfm *tfm)
{
	return container_of(tfm->__crt_alg, struct crypto_instance, alg);
}

static inline void *crypto_instance_ctx(struct crypto_instance *inst)
{
	return inst->__ctx;
}

static inline struct ablkcipher_alg *crypto_ablkcipher_alg(
	struct crypto_ablkcipher *tfm)
{
	return &crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_ablkcipher;
}

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

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

static inline struct aead_alg *crypto_aead_alg(struct crypto_aead *tfm)
{
	return &crypto_aead_tfm(tfm)->__crt_alg->cra_aead;
}

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

static inline struct crypto_instance *crypto_aead_alg_instance(
	struct crypto_aead *aead)
{
	return crypto_tfm_alg_instance(&aead->base);
}

static inline struct crypto_blkcipher *crypto_spawn_blkcipher(
	struct crypto_spawn *spawn)
{
	u32 type = CRYPTO_ALG_TYPE_BLKCIPHER;
	u32 mask = CRYPTO_ALG_TYPE_MASK;

	return __crypto_blkcipher_cast(crypto_spawn_tfm(spawn, type, mask));
}

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

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

static inline struct crypto_cipher *crypto_spawn_cipher(
	struct crypto_spawn *spawn)
{
	u32 type = CRYPTO_ALG_TYPE_CIPHER;
	u32 mask = CRYPTO_ALG_TYPE_MASK;

	return __crypto_cipher_cast(crypto_spawn_tfm(spawn, type, mask));
}

static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm)
{
	return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
}

static inline struct crypto_hash *crypto_spawn_hash(struct crypto_spawn *spawn)
{
	u32 type = CRYPTO_ALG_TYPE_HASH;
	u32 mask = CRYPTO_ALG_TYPE_HASH_MASK;

	return __crypto_hash_cast(crypto_spawn_tfm(spawn, type, mask));
}

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

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

static inline void blkcipher_walk_init(struct blkcipher_walk *walk,
				       struct scatterlist *dst,
				       struct scatterlist *src,
				       unsigned int nbytes)
{
	walk->in.sg = src;
	walk->out.sg = dst;
	walk->total = nbytes;
}

static inline void ablkcipher_walk_init(struct ablkcipher_walk *walk,
					struct scatterlist *dst,
					struct scatterlist *src,
					unsigned int nbytes)
{
	walk->in.sg = src;
	walk->out.sg = dst;
	walk->total = nbytes;
	INIT_LIST_HEAD(&walk->buffers);
}

static inline void ablkcipher_walk_complete(struct ablkcipher_walk *walk)
{
	if (unlikely(!list_empty(&walk->buffers)))
		__ablkcipher_walk_complete(walk);
}

static inline struct crypto_async_request *crypto_get_backlog(
	struct crypto_queue *queue)
{
	return queue->backlog == &queue->list ? NULL :
	       container_of(queue->backlog, struct crypto_async_request, list);
}

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

static inline struct ablkcipher_request *ablkcipher_dequeue_request(
	struct crypto_queue *queue)
{
	return ablkcipher_request_cast(crypto_dequeue_request(queue));
}

static inline void *ablkcipher_request_ctx(struct ablkcipher_request *req)
{
	return req->__ctx;
}

static inline int ablkcipher_tfm_in_queue(struct crypto_queue *queue,
					  struct crypto_ablkcipher *tfm)
{
	return crypto_tfm_in_queue(queue, crypto_ablkcipher_tfm(tfm));
}

static inline void *aead_request_ctx(struct aead_request *req)
{
	return req->__ctx;
}

static inline void aead_request_complete(struct aead_request *req, int err)
{
	req->base.complete(&req->base, err);
}

static inline u32 aead_request_flags(struct aead_request *req)
{
	return req->base.flags;
}

static inline struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb,
						     u32 type, u32 mask)
{
	return crypto_attr_alg(tb[1], type, mask);
}

/*
 * Returns CRYPTO_ALG_ASYNC if type/mask requires the use of sync algorithms.
 * Otherwise returns zero.
 */
static inline int crypto_requires_sync(u32 type, u32 mask)
{
	return (type ^ CRYPTO_ALG_ASYNC) & mask & CRYPTO_ALG_ASYNC;
}

#endif	/* _CRYPTO_ALGAPI_H */
Commit	Line	Data
cce9e06d HX	1	/*
	2	* Cryptographic API for algorithms (i.e., low-level API).
	3	*
	4	* Copyright (c) 2006 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	#ifndef _CRYPTO_ALGAPI_H
	13	#define _CRYPTO_ALGAPI_H
	14
	15	#include <linux/crypto.h>
b5b7f088 HX	16	#include <linux/list.h>
b5b7f088 HX	17	#include <linux/kernel.h>
b6aa63c0	18	#include <linux/skbuff.h>
cce9e06d	19
4cc7720c	20	struct module;
ebc610e5	21	struct rtattr;
e853c3cf HX	22	struct seq_file;
	23
	24	struct crypto_type {
27d2a330	25	unsigned int (ctxsize)(struct crypto_alg alg, u32 type, u32 mask);
2ca33da1	26	unsigned int (extsize)(struct crypto_alg alg);
27d2a330	27	int (init)(struct crypto_tfm tfm, u32 type, u32 mask);
2ca33da1	28	int (init_tfm)(struct crypto_tfm tfm);
e853c3cf	29	void (show)(struct seq_file m, struct crypto_alg *alg);
b6aa63c0	30	int (report)(struct sk_buff skb, struct crypto_alg *alg);
7b0bac64 HX	31	struct crypto_alg (lookup)(const char *name, u32 type, u32 mask);
	32
	33	unsigned int type;
	34	unsigned int maskclear;
	35	unsigned int maskset;
	36	unsigned int tfmsize;
e853c3cf	37	};
4cc7720c HX	38
	39	struct crypto_instance {
	40	struct crypto_alg alg;
	41
	42	struct crypto_template *tmpl;
	43	struct hlist_node list;
	44
	45	void *__ctx[] CRYPTO_MINALIGN_ATTR;
	46	};
	47
	48	struct crypto_template {
	49	struct list_head list;
	50	struct hlist_head instances;
	51	struct module *module;
	52
ebc610e5	53	struct crypto_instance (alloc)(struct rtattr **tb);
4cc7720c	54	void (free)(struct crypto_instance inst);
f2ac72e8	55	int (create)(struct crypto_template tmpl, struct rtattr **tb);
4cc7720c HX	56
	57	char name[CRYPTO_MAX_ALG_NAME];
	58	};
	59
6bfd4809 HX	60	struct crypto_spawn {
	61	struct list_head list;
	62	struct crypto_alg *alg;
	63	struct crypto_instance *inst;
97eedce1	64	const struct crypto_type *frontend;
a73e6996	65	u32 mask;
6bfd4809 HX	66	};
6bfd4809 HX	67
b5b7f088 HX	68	struct crypto_queue {
	69	struct list_head list;
	70	struct list_head *backlog;
	71
	72	unsigned int qlen;
	73	unsigned int max_qlen;
	74	};
	75
5c64097a HX	76	struct scatter_walk {
	77	struct scatterlist *sg;
	78	unsigned int offset;
	79	};
	80
5cde0af2 HX	81	struct blkcipher_walk {
	82	union {
	83	struct {
	84	struct page *page;
	85	unsigned long offset;
	86	} phys;
	87
	88	struct {
	89	u8 *page;
	90	u8 *addr;
	91	} virt;
	92	} src, dst;
	93
	94	struct scatter_walk in;
	95	unsigned int nbytes;
	96
	97	struct scatter_walk out;
	98	unsigned int total;
	99
	100	void *page;
	101	u8 *buffer;
	102	u8 *iv;
	103
	104	int flags;
7607bd8f	105	unsigned int blocksize;
5cde0af2 HX	106	};
5cde0af2 HX	107
bf06099d DM	108	struct ablkcipher_walk {
	109	struct {
	110	struct page *page;
	111	unsigned int offset;
	112	} src, dst;
	113
	114	struct scatter_walk in;
	115	unsigned int nbytes;
	116	struct scatter_walk out;
	117	unsigned int total;
	118	struct list_head buffers;
	119	u8 *iv_buffer;
	120	u8 *iv;
	121	int flags;
	122	unsigned int blocksize;
	123	};
	124
b5b7f088	125	extern const struct crypto_type crypto_ablkcipher_type;
1ae97820	126	extern const struct crypto_type crypto_aead_type;
5cde0af2 HX	127	extern const struct crypto_type crypto_blkcipher_type;
5cde0af2 HX	128
db131ef9 HX	129	void crypto_mod_put(struct crypto_alg *alg);
db131ef9 HX	130
4cc7720c HX	131	int crypto_register_template(struct crypto_template *tmpl);
	132	void crypto_unregister_template(struct crypto_template *tmpl);
	133	struct crypto_template crypto_lookup_template(const char name);
	134
9cd899a3 HX	135	int crypto_register_instance(struct crypto_template *tmpl,
9cd899a3 HX	136	struct crypto_instance *inst);
ce3fd840	137	int crypto_unregister_instance(struct crypto_alg *alg);
9cd899a3	138
6bfd4809	139	int crypto_init_spawn(struct crypto_spawn spawn, struct crypto_alg alg,
a73e6996	140	struct crypto_instance *inst, u32 mask);
97eedce1 HX	141	int crypto_init_spawn2(struct crypto_spawn spawn, struct crypto_alg alg,
	142	struct crypto_instance *inst,
	143	const struct crypto_type *frontend);
	144
6bfd4809	145	void crypto_drop_spawn(struct crypto_spawn *spawn);
2e306ee0 HX	146	struct crypto_tfm crypto_spawn_tfm(struct crypto_spawn spawn, u32 type,
2e306ee0 HX	147	u32 mask);
97eedce1	148	void crypto_spawn_tfm2(struct crypto_spawn spawn);
6bfd4809	149
378f4f51 HX	150	static inline void crypto_set_spawn(struct crypto_spawn *spawn,
	151	struct crypto_instance *inst)
	152	{
	153	spawn->inst = inst;
	154	}
	155
ebc610e5 HX	156	struct crypto_attr_type crypto_get_attr_type(struct rtattr *tb);
ebc610e5 HX	157	int crypto_check_attr_type(struct rtattr **tb, u32 type);
68b6c7d6	158	const char crypto_attr_alg_name(struct rtattr rta);
d06854f0 HX	159	struct crypto_alg crypto_attr_alg2(struct rtattr rta,
	160	const struct crypto_type *frontend,
	161	u32 type, u32 mask);
	162
	163	static inline struct crypto_alg crypto_attr_alg(struct rtattr rta,
	164	u32 type, u32 mask)
	165	{
	166	return crypto_attr_alg2(rta, NULL, type, mask);
	167	}
	168
3c09f17c	169	int crypto_attr_u32(struct rtattr rta, u32 num);
70ec7bb9 HX	170	void crypto_alloc_instance2(const char name, struct crypto_alg *alg,
70ec7bb9 HX	171	unsigned int head);
7fed0bf2 HX	172	struct crypto_instance crypto_alloc_instance(const char name,
	173	struct crypto_alg *alg);
	174
b5b7f088 HX	175	void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen);
	176	int crypto_enqueue_request(struct crypto_queue *queue,
	177	struct crypto_async_request *request);
0c7d400f	178	void __crypto_dequeue_request(struct crypto_queue queue, unsigned int offset);
b5b7f088 HX	179	struct crypto_async_request crypto_dequeue_request(struct crypto_queue queue);
	180	int crypto_tfm_in_queue(struct crypto_queue queue, struct crypto_tfm tfm);
	181
7613636d HX	182	/* These functions require the input/output to be aligned as u32. */
	183	void crypto_inc(u8 *a, unsigned int size);
	184	void crypto_xor(u8 dst, const u8 src, unsigned int size);
	185
5cde0af2 HX	186	int blkcipher_walk_done(struct blkcipher_desc *desc,
	187	struct blkcipher_walk *walk, int err);
	188	int blkcipher_walk_virt(struct blkcipher_desc *desc,
	189	struct blkcipher_walk *walk);
	190	int blkcipher_walk_phys(struct blkcipher_desc *desc,
	191	struct blkcipher_walk *walk);
7607bd8f HX	192	int blkcipher_walk_virt_block(struct blkcipher_desc *desc,
	193	struct blkcipher_walk *walk,
	194	unsigned int blocksize);
5cde0af2	195
bf06099d DM	196	int ablkcipher_walk_done(struct ablkcipher_request *req,
	197	struct ablkcipher_walk *walk, int err);
	198	int ablkcipher_walk_phys(struct ablkcipher_request *req,
	199	struct ablkcipher_walk *walk);
	200	void __ablkcipher_walk_complete(struct ablkcipher_walk *walk);
	201
5cde0af2 HX	202	static inline void crypto_tfm_ctx_aligned(struct crypto_tfm tfm)
5cde0af2 HX	203	{
ab300465 HX	204	return PTR_ALIGN(crypto_tfm_ctx(tfm),
ab300465 HX	205	crypto_tfm_alg_alignmask(tfm) + 1);
5cde0af2 HX	206	}
5cde0af2 HX	207
124b53d0 HX	208	static inline struct crypto_instance *crypto_tfm_alg_instance(
	209	struct crypto_tfm *tfm)
	210	{
	211	return container_of(tfm->__crt_alg, struct crypto_instance, alg);
	212	}
	213
4cc7720c HX	214	static inline void crypto_instance_ctx(struct crypto_instance inst)
	215	{
	216	return inst->__ctx;
	217	}
	218
b5b7f088 HX	219	static inline struct ablkcipher_alg *crypto_ablkcipher_alg(
	220	struct crypto_ablkcipher *tfm)
	221	{
	222	return &crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_ablkcipher;
	223	}
	224
	225	static inline void crypto_ablkcipher_ctx(struct crypto_ablkcipher tfm)
	226	{
	227	return crypto_tfm_ctx(&tfm->base);
	228	}
	229
aa379a6a SS	230	static inline void crypto_ablkcipher_ctx_aligned(struct crypto_ablkcipher tfm)
	231	{
	232	return crypto_tfm_ctx_aligned(&tfm->base);
	233	}
	234
1ae97820 HX	235	static inline struct aead_alg crypto_aead_alg(struct crypto_aead tfm)
	236	{
	237	return &crypto_aead_tfm(tfm)->__crt_alg->cra_aead;
	238	}
	239
3c09f17c HX	240	static inline void crypto_aead_ctx(struct crypto_aead tfm)
	241	{
	242	return crypto_tfm_ctx(&tfm->base);
	243	}
	244
	245	static inline struct crypto_instance *crypto_aead_alg_instance(
	246	struct crypto_aead *aead)
	247	{
	248	return crypto_tfm_alg_instance(&aead->base);
	249	}
	250
124b53d0 HX	251	static inline struct crypto_blkcipher *crypto_spawn_blkcipher(
	252	struct crypto_spawn *spawn)
	253	{
	254	u32 type = CRYPTO_ALG_TYPE_BLKCIPHER;
332f8840	255	u32 mask = CRYPTO_ALG_TYPE_MASK;
124b53d0 HX	256
	257	return __crypto_blkcipher_cast(crypto_spawn_tfm(spawn, type, mask));
	258	}
	259
5cde0af2 HX	260	static inline void crypto_blkcipher_ctx(struct crypto_blkcipher tfm)
	261	{
	262	return crypto_tfm_ctx(&tfm->base);
	263	}
	264
	265	static inline void crypto_blkcipher_ctx_aligned(struct crypto_blkcipher tfm)
	266	{
	267	return crypto_tfm_ctx_aligned(&tfm->base);
	268	}
	269
2e306ee0 HX	270	static inline struct crypto_cipher *crypto_spawn_cipher(
	271	struct crypto_spawn *spawn)
	272	{
	273	u32 type = CRYPTO_ALG_TYPE_CIPHER;
	274	u32 mask = CRYPTO_ALG_TYPE_MASK;
	275
	276	return __crypto_cipher_cast(crypto_spawn_tfm(spawn, type, mask));
	277	}
	278
f28776a3 HX	279	static inline struct cipher_alg crypto_cipher_alg(struct crypto_cipher tfm)
	280	{
	281	return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
	282	}
	283
2e306ee0 HX	284	static inline struct crypto_hash crypto_spawn_hash(struct crypto_spawn spawn)
	285	{
	286	u32 type = CRYPTO_ALG_TYPE_HASH;
	287	u32 mask = CRYPTO_ALG_TYPE_HASH_MASK;
	288
	289	return __crypto_hash_cast(crypto_spawn_tfm(spawn, type, mask));
	290	}
	291
5f7082ed HX	292	static inline void crypto_hash_ctx(struct crypto_hash tfm)
	293	{
	294	return crypto_tfm_ctx(&tfm->base);
	295	}
	296
055bcee3 HX	297	static inline void crypto_hash_ctx_aligned(struct crypto_hash tfm)
	298	{
	299	return crypto_tfm_ctx_aligned(&tfm->base);
	300	}
	301
5cde0af2 HX	302	static inline void blkcipher_walk_init(struct blkcipher_walk *walk,
	303	struct scatterlist *dst,
	304	struct scatterlist *src,
	305	unsigned int nbytes)
	306	{
	307	walk->in.sg = src;
	308	walk->out.sg = dst;
	309	walk->total = nbytes;
	310	}
	311
bf06099d DM	312	static inline void ablkcipher_walk_init(struct ablkcipher_walk *walk,
	313	struct scatterlist *dst,
	314	struct scatterlist *src,
	315	unsigned int nbytes)
	316	{
	317	walk->in.sg = src;
	318	walk->out.sg = dst;
	319	walk->total = nbytes;
	320	INIT_LIST_HEAD(&walk->buffers);
	321	}
	322
	323	static inline void ablkcipher_walk_complete(struct ablkcipher_walk *walk)
	324	{
	325	if (unlikely(!list_empty(&walk->buffers)))
	326	__ablkcipher_walk_complete(walk);
	327	}
	328
b5b7f088 HX	329	static inline struct crypto_async_request *crypto_get_backlog(
	330	struct crypto_queue *queue)
	331	{
	332	return queue->backlog == &queue->list ? NULL :
	333	container_of(queue->backlog, struct crypto_async_request, list);
	334	}
	335
2de98e75	336	static inline int ablkcipher_enqueue_request(struct crypto_queue *queue,
b5b7f088 HX	337	struct ablkcipher_request *request)
b5b7f088 HX	338	{
2de98e75	339	return crypto_enqueue_request(queue, &request->base);
b5b7f088 HX	340	}
	341
	342	static inline struct ablkcipher_request *ablkcipher_dequeue_request(
2de98e75	343	struct crypto_queue *queue)
b5b7f088	344	{
2de98e75	345	return ablkcipher_request_cast(crypto_dequeue_request(queue));
b5b7f088 HX	346	}
	347
	348	static inline void ablkcipher_request_ctx(struct ablkcipher_request req)
	349	{
	350	return req->__ctx;
	351	}
	352
2de98e75 HX	353	static inline int ablkcipher_tfm_in_queue(struct crypto_queue *queue,
2de98e75 HX	354	struct crypto_ablkcipher *tfm)
b5b7f088	355	{
2de98e75	356	return crypto_tfm_in_queue(queue, crypto_ablkcipher_tfm(tfm));
b5b7f088 HX	357	}
b5b7f088 HX	358
3c09f17c HX	359	static inline void aead_request_ctx(struct aead_request req)
	360	{
	361	return req->__ctx;
	362	}
	363
	364	static inline void aead_request_complete(struct aead_request *req, int err)
	365	{
	366	req->base.complete(&req->base, err);
	367	}
	368
	369	static inline u32 aead_request_flags(struct aead_request *req)
	370	{
	371	return req->base.flags;
	372	}
	373
	374	static inline struct crypto_alg crypto_get_attr_alg(struct rtattr *tb,
	375	u32 type, u32 mask)
	376	{
	377	return crypto_attr_alg(tb[1], type, mask);
	378	}
	379
378f4f51 HX	380	/*
	381	* Returns CRYPTO_ALG_ASYNC if type/mask requires the use of sync algorithms.
	382	* Otherwise returns zero.
	383	*/
	384	static inline int crypto_requires_sync(u32 type, u32 mask)
	385	{
	386	return (type ^ CRYPTO_ALG_ASYNC) & mask & CRYPTO_ALG_ASYNC;
	387	}
	388
cce9e06d HX	389	#endif /* _CRYPTO_ALGAPI_H */
cce9e06d HX	390