[mirror_ubuntu-jammy-kernel.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>

/*
 * Maximum values for blocksize and alignmask, used to allocate
 * static buffers that are big enough for any combination of
 * ciphers and architectures.
 */
#define MAX_CIPHER_BLOCKSIZE		16
#define MAX_CIPHER_ALIGNMASK		15

struct crypto_aead;
struct crypto_instance;
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);
	void (*free)(struct crypto_instance *inst);

	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;
	unsigned int ivsize;

	int flags;
	unsigned int walk_blocksize;
	unsigned int cipher_blocksize;
	unsigned int alignmask;
};

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_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_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);
int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name,
		      u32 type, u32 mask);

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);
int crypto_inst_setname(struct crypto_instance *inst, const char *name,
			struct crypto_alg *alg);
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);
static inline unsigned int crypto_queue_len(struct crypto_queue *queue)
{
	return queue->qlen;
}

void crypto_inc(u8 *a, unsigned int size);
void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int size);

static inline void crypto_xor(u8 *dst, const u8 *src, unsigned int size)
{
	if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) &&
	    __builtin_constant_p(size) &&
	    (size % sizeof(unsigned long)) == 0) {
		unsigned long *d = (unsigned long *)dst;
		unsigned long *s = (unsigned long *)src;

		while (size > 0) {
			*d++ ^= *s++;
			size -= sizeof(unsigned long);
		}
	} else {
		__crypto_xor(dst, dst, src, size);
	}
}

static inline void crypto_xor_cpy(u8 *dst, const u8 *src1, const u8 *src2,
				  unsigned int size)
{
	if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) &&
	    __builtin_constant_p(size) &&
	    (size % sizeof(unsigned long)) == 0) {
		unsigned long *d = (unsigned long *)dst;
		unsigned long *s1 = (unsigned long *)src1;
		unsigned long *s2 = (unsigned long *)src2;

		while (size > 0) {
			*d++ = *s1++ ^ *s2++;
			size -= sizeof(unsigned long);
		}
	} else {
		__crypto_xor(dst, src1, src2, 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 blkcipher_aead_walk_virt_block(struct blkcipher_desc *desc,
				   struct blkcipher_walk *walk,
				   struct crypto_aead *tfm,
				   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 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 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 struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb,
						     u32 type, u32 mask)
{
	return crypto_attr_alg(tb[1], type, mask);
}

static inline int crypto_requires_off(u32 type, u32 mask, u32 off)
{
	return (type ^ off) & mask & off;
}

/*
 * 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 crypto_requires_off(type, mask, CRYPTO_ALG_ASYNC);
}

noinline unsigned long __crypto_memneq(const void *a, const void *b, size_t size);

/**
 * crypto_memneq - Compare two areas of memory without leaking
 *		   timing information.
 *
 * @a: One area of memory
 * @b: Another area of memory
 * @size: The size of the area.
 *
 * Returns 0 when data is equal, 1 otherwise.
 */
static inline int crypto_memneq(const void *a, const void *b, size_t size)
{
	return __crypto_memneq(a, b, size) != 0UL ? 1 : 0;
}

static inline void crypto_yield(u32 flags)
{
#if !defined(CONFIG_PREEMPT) || defined(CONFIG_PREEMPT_VOLUNTARY)
	if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)
		cond_resched();
#endif
}

#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
13c935bb SM	20	/*
	21	* Maximum values for blocksize and alignmask, used to allocate
	22	* static buffers that are big enough for any combination of
	23	* ciphers and architectures.
	24	*/
	25	#define MAX_CIPHER_BLOCKSIZE 16
	26	#define MAX_CIPHER_ALIGNMASK 15
	27
5d1d65f8	28	struct crypto_aead;
319382a6	29	struct crypto_instance;
4cc7720c	30	struct module;
ebc610e5	31	struct rtattr;
e853c3cf HX	32	struct seq_file;
	33
	34	struct crypto_type {
27d2a330	35	unsigned int (ctxsize)(struct crypto_alg alg, u32 type, u32 mask);
2ca33da1	36	unsigned int (extsize)(struct crypto_alg alg);
27d2a330	37	int (init)(struct crypto_tfm tfm, u32 type, u32 mask);
2ca33da1	38	int (init_tfm)(struct crypto_tfm tfm);
e853c3cf	39	void (show)(struct seq_file m, struct crypto_alg *alg);
b6aa63c0	40	int (report)(struct sk_buff skb, struct crypto_alg *alg);
319382a6	41	void (free)(struct crypto_instance inst);
7b0bac64 HX	42
	43	unsigned int type;
	44	unsigned int maskclear;
	45	unsigned int maskset;
	46	unsigned int tfmsize;
e853c3cf	47	};
4cc7720c HX	48
	49	struct crypto_instance {
	50	struct crypto_alg alg;
	51
	52	struct crypto_template *tmpl;
	53	struct hlist_node list;
	54
	55	void *__ctx[] CRYPTO_MINALIGN_ATTR;
	56	};
	57
	58	struct crypto_template {
	59	struct list_head list;
	60	struct hlist_head instances;
	61	struct module *module;
	62
ebc610e5	63	struct crypto_instance (alloc)(struct rtattr **tb);
4cc7720c	64	void (free)(struct crypto_instance inst);
f2ac72e8	65	int (create)(struct crypto_template tmpl, struct rtattr **tb);
4cc7720c HX	66
	67	char name[CRYPTO_MAX_ALG_NAME];
	68	};
	69
6bfd4809 HX	70	struct crypto_spawn {
	71	struct list_head list;
	72	struct crypto_alg *alg;
	73	struct crypto_instance *inst;
97eedce1	74	const struct crypto_type *frontend;
a73e6996	75	u32 mask;
6bfd4809 HX	76	};
6bfd4809 HX	77
b5b7f088 HX	78	struct crypto_queue {
	79	struct list_head list;
	80	struct list_head *backlog;
	81
	82	unsigned int qlen;
	83	unsigned int max_qlen;
	84	};
	85
5c64097a HX	86	struct scatter_walk {
	87	struct scatterlist *sg;
	88	unsigned int offset;
	89	};
	90
5cde0af2 HX	91	struct blkcipher_walk {
	92	union {
	93	struct {
	94	struct page *page;
	95	unsigned long offset;
	96	} phys;
	97
	98	struct {
	99	u8 *page;
	100	u8 *addr;
	101	} virt;
	102	} src, dst;
	103
	104	struct scatter_walk in;
	105	unsigned int nbytes;
	106
	107	struct scatter_walk out;
	108	unsigned int total;
	109
	110	void *page;
	111	u8 *buffer;
	112	u8 *iv;
822be00f	113	unsigned int ivsize;
5cde0af2 HX	114
5cde0af2 HX	115	int flags;
822be00f AB	116	unsigned int walk_blocksize;
	117	unsigned int cipher_blocksize;
	118	unsigned int alignmask;
5cde0af2 HX	119	};
5cde0af2 HX	120
bf06099d DM	121	struct ablkcipher_walk {
	122	struct {
	123	struct page *page;
	124	unsigned int offset;
	125	} src, dst;
	126
	127	struct scatter_walk in;
	128	unsigned int nbytes;
	129	struct scatter_walk out;
	130	unsigned int total;
	131	struct list_head buffers;
	132	u8 *iv_buffer;
	133	u8 *iv;
	134	int flags;
	135	unsigned int blocksize;
	136	};
	137
b5b7f088	138	extern const struct crypto_type crypto_ablkcipher_type;
5cde0af2 HX	139	extern const struct crypto_type crypto_blkcipher_type;
5cde0af2 HX	140
db131ef9 HX	141	void crypto_mod_put(struct crypto_alg *alg);
db131ef9 HX	142
4cc7720c HX	143	int crypto_register_template(struct crypto_template *tmpl);
	144	void crypto_unregister_template(struct crypto_template *tmpl);
	145	struct crypto_template crypto_lookup_template(const char name);
	146
9cd899a3 HX	147	int crypto_register_instance(struct crypto_template *tmpl,
9cd899a3 HX	148	struct crypto_instance *inst);
87b16756	149	int crypto_unregister_instance(struct crypto_instance *inst);
9cd899a3	150
6bfd4809	151	int crypto_init_spawn(struct crypto_spawn spawn, struct crypto_alg alg,
a73e6996	152	struct crypto_instance *inst, u32 mask);
97eedce1 HX	153	int crypto_init_spawn2(struct crypto_spawn spawn, struct crypto_alg alg,
	154	struct crypto_instance *inst,
	155	const struct crypto_type *frontend);
d6ef2f19 HX	156	int crypto_grab_spawn(struct crypto_spawn spawn, const char name,
d6ef2f19 HX	157	u32 type, u32 mask);
97eedce1	158
6bfd4809	159	void crypto_drop_spawn(struct crypto_spawn *spawn);
2e306ee0 HX	160	struct crypto_tfm crypto_spawn_tfm(struct crypto_spawn spawn, u32 type,
2e306ee0 HX	161	u32 mask);
97eedce1	162	void crypto_spawn_tfm2(struct crypto_spawn spawn);
6bfd4809	163
378f4f51 HX	164	static inline void crypto_set_spawn(struct crypto_spawn *spawn,
	165	struct crypto_instance *inst)
	166	{
	167	spawn->inst = inst;
	168	}
	169
ebc610e5 HX	170	struct crypto_attr_type crypto_get_attr_type(struct rtattr *tb);
ebc610e5 HX	171	int crypto_check_attr_type(struct rtattr **tb, u32 type);
68b6c7d6	172	const char crypto_attr_alg_name(struct rtattr rta);
d06854f0 HX	173	struct crypto_alg crypto_attr_alg2(struct rtattr rta,
	174	const struct crypto_type *frontend,
	175	u32 type, u32 mask);
	176
	177	static inline struct crypto_alg crypto_attr_alg(struct rtattr rta,
	178	u32 type, u32 mask)
	179	{
	180	return crypto_attr_alg2(rta, NULL, type, mask);
	181	}
	182
3c09f17c	183	int crypto_attr_u32(struct rtattr rta, u32 num);
32f27c74 HX	184	int crypto_inst_setname(struct crypto_instance inst, const char name,
32f27c74 HX	185	struct crypto_alg *alg);
70ec7bb9 HX	186	void crypto_alloc_instance2(const char name, struct crypto_alg *alg,
70ec7bb9 HX	187	unsigned int head);
7fed0bf2 HX	188	struct crypto_instance crypto_alloc_instance(const char name,
	189	struct crypto_alg *alg);
	190
b5b7f088 HX	191	void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen);
	192	int crypto_enqueue_request(struct crypto_queue *queue,
	193	struct crypto_async_request *request);
	194	struct crypto_async_request crypto_dequeue_request(struct crypto_queue queue);
	195	int crypto_tfm_in_queue(struct crypto_queue queue, struct crypto_tfm tfm);
9f93a8a0 BW	196	static inline unsigned int crypto_queue_len(struct crypto_queue *queue)
	197	{
	198	return queue->qlen;
	199	}
b5b7f088	200
7613636d	201	void crypto_inc(u8 *a, unsigned int size);
a7c391f0	202	void __crypto_xor(u8 dst, const u8 src1, const u8 *src2, unsigned int size);
db91af0f AB	203
	204	static inline void crypto_xor(u8 dst, const u8 src, unsigned int size)
	205	{
	206	if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) &&
	207	__builtin_constant_p(size) &&
	208	(size % sizeof(unsigned long)) == 0) {
	209	unsigned long d = (unsigned long )dst;
	210	unsigned long s = (unsigned long )src;
	211
	212	while (size > 0) {
	213	d++ ^= s++;
	214	size -= sizeof(unsigned long);
	215	}
	216	} else {
a7c391f0	217	__crypto_xor(dst, dst, src, size);
db91af0f AB	218	}
db91af0f AB	219	}
7613636d	220
45fe93df AB	221	static inline void crypto_xor_cpy(u8 dst, const u8 src1, const u8 *src2,
	222	unsigned int size)
	223	{
	224	if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) &&
	225	__builtin_constant_p(size) &&
	226	(size % sizeof(unsigned long)) == 0) {
	227	unsigned long d = (unsigned long )dst;
	228	unsigned long s1 = (unsigned long )src1;
	229	unsigned long s2 = (unsigned long )src2;
	230
	231	while (size > 0) {
	232	d++ = s1++ ^ *s2++;
	233	size -= sizeof(unsigned long);
	234	}
	235	} else {
	236	__crypto_xor(dst, src1, src2, size);
	237	}
	238	}
	239
5cde0af2 HX	240	int blkcipher_walk_done(struct blkcipher_desc *desc,
	241	struct blkcipher_walk *walk, int err);
	242	int blkcipher_walk_virt(struct blkcipher_desc *desc,
	243	struct blkcipher_walk *walk);
	244	int blkcipher_walk_phys(struct blkcipher_desc *desc,
	245	struct blkcipher_walk *walk);
7607bd8f HX	246	int blkcipher_walk_virt_block(struct blkcipher_desc *desc,
	247	struct blkcipher_walk *walk,
	248	unsigned int blocksize);
4f7f1d7c AB	249	int blkcipher_aead_walk_virt_block(struct blkcipher_desc *desc,
	250	struct blkcipher_walk *walk,
	251	struct crypto_aead *tfm,
	252	unsigned int blocksize);
5cde0af2	253
bf06099d DM	254	int ablkcipher_walk_done(struct ablkcipher_request *req,
	255	struct ablkcipher_walk *walk, int err);
	256	int ablkcipher_walk_phys(struct ablkcipher_request *req,
	257	struct ablkcipher_walk *walk);
	258	void __ablkcipher_walk_complete(struct ablkcipher_walk *walk);
	259
5cde0af2 HX	260	static inline void crypto_tfm_ctx_aligned(struct crypto_tfm tfm)
5cde0af2 HX	261	{
ab300465 HX	262	return PTR_ALIGN(crypto_tfm_ctx(tfm),
ab300465 HX	263	crypto_tfm_alg_alignmask(tfm) + 1);
5cde0af2 HX	264	}
5cde0af2 HX	265
124b53d0 HX	266	static inline struct crypto_instance *crypto_tfm_alg_instance(
	267	struct crypto_tfm *tfm)
	268	{
	269	return container_of(tfm->__crt_alg, struct crypto_instance, alg);
	270	}
	271
4cc7720c HX	272	static inline void crypto_instance_ctx(struct crypto_instance inst)
	273	{
	274	return inst->__ctx;
	275	}
	276
b5b7f088 HX	277	static inline struct ablkcipher_alg *crypto_ablkcipher_alg(
	278	struct crypto_ablkcipher *tfm)
	279	{
	280	return &crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_ablkcipher;
	281	}
	282
	283	static inline void crypto_ablkcipher_ctx(struct crypto_ablkcipher tfm)
	284	{
	285	return crypto_tfm_ctx(&tfm->base);
	286	}
	287
aa379a6a SS	288	static inline void crypto_ablkcipher_ctx_aligned(struct crypto_ablkcipher tfm)
	289	{
	290	return crypto_tfm_ctx_aligned(&tfm->base);
	291	}
	292
124b53d0 HX	293	static inline struct crypto_blkcipher *crypto_spawn_blkcipher(
	294	struct crypto_spawn *spawn)
	295	{
	296	u32 type = CRYPTO_ALG_TYPE_BLKCIPHER;
332f8840	297	u32 mask = CRYPTO_ALG_TYPE_MASK;
124b53d0 HX	298
	299	return __crypto_blkcipher_cast(crypto_spawn_tfm(spawn, type, mask));
	300	}
	301
5cde0af2 HX	302	static inline void crypto_blkcipher_ctx(struct crypto_blkcipher tfm)
	303	{
	304	return crypto_tfm_ctx(&tfm->base);
	305	}
	306
	307	static inline void crypto_blkcipher_ctx_aligned(struct crypto_blkcipher tfm)
	308	{
	309	return crypto_tfm_ctx_aligned(&tfm->base);
	310	}
	311
2e306ee0 HX	312	static inline struct crypto_cipher *crypto_spawn_cipher(
	313	struct crypto_spawn *spawn)
	314	{
	315	u32 type = CRYPTO_ALG_TYPE_CIPHER;
	316	u32 mask = CRYPTO_ALG_TYPE_MASK;
	317
	318	return __crypto_cipher_cast(crypto_spawn_tfm(spawn, type, mask));
	319	}
	320
f28776a3 HX	321	static inline struct cipher_alg crypto_cipher_alg(struct crypto_cipher tfm)
	322	{
	323	return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
	324	}
	325
5cde0af2 HX	326	static inline void blkcipher_walk_init(struct blkcipher_walk *walk,
	327	struct scatterlist *dst,
	328	struct scatterlist *src,
	329	unsigned int nbytes)
	330	{
	331	walk->in.sg = src;
	332	walk->out.sg = dst;
	333	walk->total = nbytes;
	334	}
	335
bf06099d DM	336	static inline void ablkcipher_walk_init(struct ablkcipher_walk *walk,
	337	struct scatterlist *dst,
	338	struct scatterlist *src,
	339	unsigned int nbytes)
	340	{
	341	walk->in.sg = src;
	342	walk->out.sg = dst;
	343	walk->total = nbytes;
	344	INIT_LIST_HEAD(&walk->buffers);
	345	}
	346
	347	static inline void ablkcipher_walk_complete(struct ablkcipher_walk *walk)
	348	{
	349	if (unlikely(!list_empty(&walk->buffers)))
	350	__ablkcipher_walk_complete(walk);
	351	}
	352
b5b7f088 HX	353	static inline struct crypto_async_request *crypto_get_backlog(
	354	struct crypto_queue *queue)
	355	{
	356	return queue->backlog == &queue->list ? NULL :
	357	container_of(queue->backlog, struct crypto_async_request, list);
	358	}
	359
2de98e75	360	static inline int ablkcipher_enqueue_request(struct crypto_queue *queue,
b5b7f088 HX	361	struct ablkcipher_request *request)
b5b7f088 HX	362	{
2de98e75	363	return crypto_enqueue_request(queue, &request->base);
b5b7f088 HX	364	}
	365
	366	static inline struct ablkcipher_request *ablkcipher_dequeue_request(
2de98e75	367	struct crypto_queue *queue)
b5b7f088	368	{
2de98e75	369	return ablkcipher_request_cast(crypto_dequeue_request(queue));
b5b7f088 HX	370	}
	371
	372	static inline void ablkcipher_request_ctx(struct ablkcipher_request req)
	373	{
	374	return req->__ctx;
	375	}
	376
2de98e75 HX	377	static inline int ablkcipher_tfm_in_queue(struct crypto_queue *queue,
2de98e75 HX	378	struct crypto_ablkcipher *tfm)
b5b7f088	379	{
2de98e75	380	return crypto_tfm_in_queue(queue, crypto_ablkcipher_tfm(tfm));
b5b7f088 HX	381	}
b5b7f088 HX	382
3c09f17c HX	383	static inline struct crypto_alg crypto_get_attr_alg(struct rtattr *tb,
	384	u32 type, u32 mask)
	385	{
	386	return crypto_attr_alg(tb[1], type, mask);
	387	}
	388
016df0ab HX	389	static inline int crypto_requires_off(u32 type, u32 mask, u32 off)
	390	{
	391	return (type ^ off) & mask & off;
	392	}
	393
378f4f51 HX	394	/*
	395	* Returns CRYPTO_ALG_ASYNC if type/mask requires the use of sync algorithms.
	396	* Otherwise returns zero.
	397	*/
	398	static inline int crypto_requires_sync(u32 type, u32 mask)
	399	{
016df0ab	400	return crypto_requires_off(type, mask, CRYPTO_ALG_ASYNC);
378f4f51 HX	401	}
378f4f51 HX	402
6bf37e5a JY	403	noinline unsigned long __crypto_memneq(const void a, const void b, size_t size);
	404
	405	/**
	406	* crypto_memneq - Compare two areas of memory without leaking
	407	* timing information.
	408	*
	409	* @a: One area of memory
	410	* @b: Another area of memory
	411	* @size: The size of the area.
	412	*
	413	* Returns 0 when data is equal, 1 otherwise.
	414	*/
	415	static inline int crypto_memneq(const void a, const void b, size_t size)
	416	{
	417	return __crypto_memneq(a, b, size) != 0UL ? 1 : 0;
	418	}
cce9e06d	419
bb55a4c1 MV	420	static inline void crypto_yield(u32 flags)
bb55a4c1 MV	421	{
41401397	422	#if !defined(CONFIG_PREEMPT) \|\| defined(CONFIG_PREEMPT_VOLUNTARY)
bb55a4c1 MV	423	if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)
bb55a4c1 MV	424	cond_resched();
41401397	425	#endif
bb55a4c1 MV	426	}
bb55a4c1 MV	427
6bf37e5a	428	#endif /* _CRYPTO_ALGAPI_H */