[net-next-2.6.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;
};

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_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>
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
bf06099d DM	106	struct ablkcipher_walk {
	107	struct {
	108	struct page *page;
	109	unsigned int offset;
	110	} src, dst;
	111
	112	struct scatter_walk in;
	113	unsigned int nbytes;
	114	struct scatter_walk out;
	115	unsigned int total;
	116	struct list_head buffers;
	117	u8 *iv_buffer;
	118	u8 *iv;
	119	int flags;
	120	unsigned int blocksize;
	121	};
	122
b5b7f088	123	extern const struct crypto_type crypto_ablkcipher_type;
1ae97820	124	extern const struct crypto_type crypto_aead_type;
5cde0af2 HX	125	extern const struct crypto_type crypto_blkcipher_type;
5cde0af2 HX	126
db131ef9 HX	127	void crypto_mod_put(struct crypto_alg *alg);
db131ef9 HX	128
4cc7720c HX	129	int crypto_register_template(struct crypto_template *tmpl);
	130	void crypto_unregister_template(struct crypto_template *tmpl);
	131	struct crypto_template crypto_lookup_template(const char name);
	132
9cd899a3 HX	133	int crypto_register_instance(struct crypto_template *tmpl,
	134	struct crypto_instance *inst);
	135
6bfd4809	136	int crypto_init_spawn(struct crypto_spawn spawn, struct crypto_alg alg,
a73e6996	137	struct crypto_instance *inst, u32 mask);
97eedce1 HX	138	int crypto_init_spawn2(struct crypto_spawn spawn, struct crypto_alg alg,
	139	struct crypto_instance *inst,
	140	const struct crypto_type *frontend);
	141
6bfd4809	142	void crypto_drop_spawn(struct crypto_spawn *spawn);
2e306ee0 HX	143	struct crypto_tfm crypto_spawn_tfm(struct crypto_spawn spawn, u32 type,
2e306ee0 HX	144	u32 mask);
97eedce1	145	void crypto_spawn_tfm2(struct crypto_spawn spawn);
6bfd4809	146
378f4f51 HX	147	static inline void crypto_set_spawn(struct crypto_spawn *spawn,
	148	struct crypto_instance *inst)
	149	{
	150	spawn->inst = inst;
	151	}
	152
ebc610e5 HX	153	struct crypto_attr_type crypto_get_attr_type(struct rtattr *tb);
ebc610e5 HX	154	int crypto_check_attr_type(struct rtattr **tb, u32 type);
68b6c7d6	155	const char crypto_attr_alg_name(struct rtattr rta);
d06854f0 HX	156	struct crypto_alg crypto_attr_alg2(struct rtattr rta,
	157	const struct crypto_type *frontend,
	158	u32 type, u32 mask);
	159
	160	static inline struct crypto_alg crypto_attr_alg(struct rtattr rta,
	161	u32 type, u32 mask)
	162	{
	163	return crypto_attr_alg2(rta, NULL, type, mask);
	164	}
	165
3c09f17c	166	int crypto_attr_u32(struct rtattr rta, u32 num);
70ec7bb9 HX	167	void crypto_alloc_instance2(const char name, struct crypto_alg *alg,
70ec7bb9 HX	168	unsigned int head);
7fed0bf2 HX	169	struct crypto_instance crypto_alloc_instance(const char name,
	170	struct crypto_alg *alg);
	171
b5b7f088 HX	172	void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen);
	173	int crypto_enqueue_request(struct crypto_queue *queue,
	174	struct crypto_async_request *request);
0c7d400f	175	void __crypto_dequeue_request(struct crypto_queue queue, unsigned int offset);
b5b7f088 HX	176	struct crypto_async_request crypto_dequeue_request(struct crypto_queue queue);
	177	int crypto_tfm_in_queue(struct crypto_queue queue, struct crypto_tfm tfm);
	178
7613636d HX	179	/* These functions require the input/output to be aligned as u32. */
	180	void crypto_inc(u8 *a, unsigned int size);
	181	void crypto_xor(u8 dst, const u8 src, unsigned int size);
	182
5cde0af2 HX	183	int blkcipher_walk_done(struct blkcipher_desc *desc,
	184	struct blkcipher_walk *walk, int err);
	185	int blkcipher_walk_virt(struct blkcipher_desc *desc,
	186	struct blkcipher_walk *walk);
	187	int blkcipher_walk_phys(struct blkcipher_desc *desc,
	188	struct blkcipher_walk *walk);
7607bd8f HX	189	int blkcipher_walk_virt_block(struct blkcipher_desc *desc,
	190	struct blkcipher_walk *walk,
	191	unsigned int blocksize);
5cde0af2	192
bf06099d DM	193	int ablkcipher_walk_done(struct ablkcipher_request *req,
	194	struct ablkcipher_walk *walk, int err);
	195	int ablkcipher_walk_phys(struct ablkcipher_request *req,
	196	struct ablkcipher_walk *walk);
	197	void __ablkcipher_walk_complete(struct ablkcipher_walk *walk);
	198
5cde0af2 HX	199	static inline void crypto_tfm_ctx_aligned(struct crypto_tfm tfm)
5cde0af2 HX	200	{
ab300465 HX	201	return PTR_ALIGN(crypto_tfm_ctx(tfm),
ab300465 HX	202	crypto_tfm_alg_alignmask(tfm) + 1);
5cde0af2 HX	203	}
5cde0af2 HX	204
124b53d0 HX	205	static inline struct crypto_instance *crypto_tfm_alg_instance(
	206	struct crypto_tfm *tfm)
	207	{
	208	return container_of(tfm->__crt_alg, struct crypto_instance, alg);
	209	}
	210
4cc7720c HX	211	static inline void crypto_instance_ctx(struct crypto_instance inst)
	212	{
	213	return inst->__ctx;
	214	}
	215
b5b7f088 HX	216	static inline struct ablkcipher_alg *crypto_ablkcipher_alg(
	217	struct crypto_ablkcipher *tfm)
	218	{
	219	return &crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_ablkcipher;
	220	}
	221
	222	static inline void crypto_ablkcipher_ctx(struct crypto_ablkcipher tfm)
	223	{
	224	return crypto_tfm_ctx(&tfm->base);
	225	}
	226
aa379a6a SS	227	static inline void crypto_ablkcipher_ctx_aligned(struct crypto_ablkcipher tfm)
	228	{
	229	return crypto_tfm_ctx_aligned(&tfm->base);
	230	}
	231
1ae97820 HX	232	static inline struct aead_alg crypto_aead_alg(struct crypto_aead tfm)
	233	{
	234	return &crypto_aead_tfm(tfm)->__crt_alg->cra_aead;
	235	}
	236
3c09f17c HX	237	static inline void crypto_aead_ctx(struct crypto_aead tfm)
	238	{
	239	return crypto_tfm_ctx(&tfm->base);
	240	}
	241
	242	static inline struct crypto_instance *crypto_aead_alg_instance(
	243	struct crypto_aead *aead)
	244	{
	245	return crypto_tfm_alg_instance(&aead->base);
	246	}
	247
124b53d0 HX	248	static inline struct crypto_blkcipher *crypto_spawn_blkcipher(
	249	struct crypto_spawn *spawn)
	250	{
	251	u32 type = CRYPTO_ALG_TYPE_BLKCIPHER;
332f8840	252	u32 mask = CRYPTO_ALG_TYPE_MASK;
124b53d0 HX	253
	254	return __crypto_blkcipher_cast(crypto_spawn_tfm(spawn, type, mask));
	255	}
	256
5cde0af2 HX	257	static inline void crypto_blkcipher_ctx(struct crypto_blkcipher tfm)
	258	{
	259	return crypto_tfm_ctx(&tfm->base);
	260	}
	261
	262	static inline void crypto_blkcipher_ctx_aligned(struct crypto_blkcipher tfm)
	263	{
	264	return crypto_tfm_ctx_aligned(&tfm->base);
	265	}
	266
2e306ee0 HX	267	static inline struct crypto_cipher *crypto_spawn_cipher(
	268	struct crypto_spawn *spawn)
	269	{
	270	u32 type = CRYPTO_ALG_TYPE_CIPHER;
	271	u32 mask = CRYPTO_ALG_TYPE_MASK;
	272
	273	return __crypto_cipher_cast(crypto_spawn_tfm(spawn, type, mask));
	274	}
	275
f28776a3 HX	276	static inline struct cipher_alg crypto_cipher_alg(struct crypto_cipher tfm)
	277	{
	278	return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
	279	}
	280
2e306ee0 HX	281	static inline struct crypto_hash crypto_spawn_hash(struct crypto_spawn spawn)
	282	{
	283	u32 type = CRYPTO_ALG_TYPE_HASH;
	284	u32 mask = CRYPTO_ALG_TYPE_HASH_MASK;
	285
	286	return __crypto_hash_cast(crypto_spawn_tfm(spawn, type, mask));
	287	}
	288
5f7082ed HX	289	static inline void crypto_hash_ctx(struct crypto_hash tfm)
	290	{
	291	return crypto_tfm_ctx(&tfm->base);
	292	}
	293
055bcee3 HX	294	static inline void crypto_hash_ctx_aligned(struct crypto_hash tfm)
	295	{
	296	return crypto_tfm_ctx_aligned(&tfm->base);
	297	}
	298
5cde0af2 HX	299	static inline void blkcipher_walk_init(struct blkcipher_walk *walk,
	300	struct scatterlist *dst,
	301	struct scatterlist *src,
	302	unsigned int nbytes)
	303	{
	304	walk->in.sg = src;
	305	walk->out.sg = dst;
	306	walk->total = nbytes;
	307	}
	308
bf06099d DM	309	static inline void ablkcipher_walk_init(struct ablkcipher_walk *walk,
	310	struct scatterlist *dst,
	311	struct scatterlist *src,
	312	unsigned int nbytes)
	313	{
	314	walk->in.sg = src;
	315	walk->out.sg = dst;
	316	walk->total = nbytes;
	317	INIT_LIST_HEAD(&walk->buffers);
	318	}
	319
	320	static inline void ablkcipher_walk_complete(struct ablkcipher_walk *walk)
	321	{
	322	if (unlikely(!list_empty(&walk->buffers)))
	323	__ablkcipher_walk_complete(walk);
	324	}
	325
b5b7f088 HX	326	static inline struct crypto_async_request *crypto_get_backlog(
	327	struct crypto_queue *queue)
	328	{
	329	return queue->backlog == &queue->list ? NULL :
	330	container_of(queue->backlog, struct crypto_async_request, list);
	331	}
	332
2de98e75	333	static inline int ablkcipher_enqueue_request(struct crypto_queue *queue,
b5b7f088 HX	334	struct ablkcipher_request *request)
b5b7f088 HX	335	{
2de98e75	336	return crypto_enqueue_request(queue, &request->base);
b5b7f088 HX	337	}
	338
	339	static inline struct ablkcipher_request *ablkcipher_dequeue_request(
2de98e75	340	struct crypto_queue *queue)
b5b7f088	341	{
2de98e75	342	return ablkcipher_request_cast(crypto_dequeue_request(queue));
b5b7f088 HX	343	}
	344
	345	static inline void ablkcipher_request_ctx(struct ablkcipher_request req)
	346	{
	347	return req->__ctx;
	348	}
	349
2de98e75 HX	350	static inline int ablkcipher_tfm_in_queue(struct crypto_queue *queue,
2de98e75 HX	351	struct crypto_ablkcipher *tfm)
b5b7f088	352	{
2de98e75	353	return crypto_tfm_in_queue(queue, crypto_ablkcipher_tfm(tfm));
b5b7f088 HX	354	}
b5b7f088 HX	355
3c09f17c HX	356	static inline void aead_request_ctx(struct aead_request req)
	357	{
	358	return req->__ctx;
	359	}
	360
	361	static inline void aead_request_complete(struct aead_request *req, int err)
	362	{
	363	req->base.complete(&req->base, err);
	364	}
	365
	366	static inline u32 aead_request_flags(struct aead_request *req)
	367	{
	368	return req->base.flags;
	369	}
	370
	371	static inline struct crypto_alg crypto_get_attr_alg(struct rtattr *tb,
	372	u32 type, u32 mask)
	373	{
	374	return crypto_attr_alg(tb[1], type, mask);
	375	}
	376
378f4f51 HX	377	/*
	378	* Returns CRYPTO_ALG_ASYNC if type/mask requires the use of sync algorithms.
	379	* Otherwise returns zero.
	380	*/
	381	static inline int crypto_requires_sync(u32 type, u32 mask)
	382	{
	383	return (type ^ CRYPTO_ALG_ASYNC) & mask & CRYPTO_ALG_ASYNC;
	384	}
	385
cce9e06d HX	386	#endif /* _CRYPTO_ALGAPI_H */
cce9e06d HX	387