[linux-2.6-block.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>

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);
	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;
};

extern const struct crypto_type crypto_ablkcipher_type;
extern const struct crypto_type crypto_aead_type;
extern const struct crypto_type crypto_blkcipher_type;
extern const struct crypto_type crypto_hash_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_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);
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);

static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm)
{
	unsigned long addr = (unsigned long)crypto_tfm_ctx(tfm);
	unsigned long align = crypto_tfm_alg_alignmask(tfm);

	if (align <= crypto_tfm_ctx_alignment())
		align = 1;
	return (void *)ALIGN(addr, align);
}

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