[mirror_ubuntu-bionic-kernel.git] / crypto / internal.h

/*
 * Cryptographic API.
 *
 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 */
#ifndef _CRYPTO_INTERNAL_H
#define _CRYPTO_INTERNAL_H

#include <crypto/algapi.h>
#include <linux/completion.h>
#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/notifier.h>
#include <linux/rwsem.h>
#include <linux/slab.h>
#include <linux/fips.h>

/* Crypto notification events. */
enum {
	CRYPTO_MSG_ALG_REQUEST,
	CRYPTO_MSG_ALG_REGISTER,
	CRYPTO_MSG_ALG_UNREGISTER,
	CRYPTO_MSG_TMPL_REGISTER,
	CRYPTO_MSG_TMPL_UNREGISTER,
};

struct crypto_instance;
struct crypto_template;

struct crypto_larval {
	struct crypto_alg alg;
	struct crypto_alg *adult;
	struct completion completion;
	u32 mask;
};

extern struct list_head crypto_alg_list;
extern struct rw_semaphore crypto_alg_sem;
extern struct blocking_notifier_head crypto_chain;

#ifdef CONFIG_PROC_FS
void __init crypto_init_proc(void);
void __exit crypto_exit_proc(void);
#else
static inline void crypto_init_proc(void)
{ }
static inline void crypto_exit_proc(void)
{ }
#endif

static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
{
	return alg->cra_ctxsize;
}

static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
{
	return alg->cra_ctxsize;
}

struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);

int crypto_init_cipher_ops(struct crypto_tfm *tfm);
int crypto_init_compress_ops(struct crypto_tfm *tfm);

void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
void crypto_exit_compress_ops(struct crypto_tfm *tfm);

struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
void crypto_larval_kill(struct crypto_alg *alg);
struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
void crypto_alg_tested(const char *name, int err);

void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
			  struct crypto_alg *nalg);
void crypto_remove_final(struct list_head *list);
void crypto_shoot_alg(struct crypto_alg *alg);
struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
				      u32 mask);
void *crypto_create_tfm(struct crypto_alg *alg,
			const struct crypto_type *frontend);
struct crypto_alg *crypto_find_alg(const char *alg_name,
				   const struct crypto_type *frontend,
				   u32 type, u32 mask);
void *crypto_alloc_tfm(const char *alg_name,
		       const struct crypto_type *frontend, u32 type, u32 mask);

int crypto_register_notifier(struct notifier_block *nb);
int crypto_unregister_notifier(struct notifier_block *nb);
int crypto_probing_notify(unsigned long val, void *v);

static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
{
	atomic_inc(&alg->cra_refcnt);
	return alg;
}

static inline void crypto_alg_put(struct crypto_alg *alg)
{
	if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
		alg->cra_destroy(alg);
}

static inline int crypto_tmpl_get(struct crypto_template *tmpl)
{
	return try_module_get(tmpl->module);
}

static inline void crypto_tmpl_put(struct crypto_template *tmpl)
{
	module_put(tmpl->module);
}

static inline int crypto_is_larval(struct crypto_alg *alg)
{
	return alg->cra_flags & CRYPTO_ALG_LARVAL;
}

static inline int crypto_is_dead(struct crypto_alg *alg)
{
	return alg->cra_flags & CRYPTO_ALG_DEAD;
}

static inline int crypto_is_moribund(struct crypto_alg *alg)
{
	return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
}

static inline void crypto_notify(unsigned long val, void *v)
{
	blocking_notifier_call_chain(&crypto_chain, val, v);
}

#endif	/* _CRYPTO_INTERNAL_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Cryptographic API.
	3	*
	4	* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5cb1454b	5	* Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
1da177e4 LT	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the Free
269ab459	9	* Software Foundation; either version 2 of the License, or (at your option)
1da177e4 LT	10	* any later version.
	11	*
	12	*/
	13	#ifndef _CRYPTO_INTERNAL_H
	14	#define _CRYPTO_INTERNAL_H
cce9e06d HX	15
cce9e06d HX	16	#include <crypto/algapi.h>
2825982d	17	#include <linux/completion.h>
1da177e4 LT	18	#include <linux/mm.h>
	19	#include <linux/highmem.h>
	20	#include <linux/interrupt.h>
	21	#include <linux/init.h>
5cb1454b	22	#include <linux/list.h>
4cc7720c	23	#include <linux/module.h>
fbdae9f3	24	#include <linux/kernel.h>
2825982d	25	#include <linux/notifier.h>
5cb1454b	26	#include <linux/rwsem.h>
64baf3cf	27	#include <linux/slab.h>
5b739ef8	28	#include <linux/fips.h>
ccb778e1	29
2825982d HX	30	/* Crypto notification events. */
	31	enum {
	32	CRYPTO_MSG_ALG_REQUEST,
	33	CRYPTO_MSG_ALG_REGISTER,
	34	CRYPTO_MSG_ALG_UNREGISTER,
	35	CRYPTO_MSG_TMPL_REGISTER,
	36	CRYPTO_MSG_TMPL_UNREGISTER,
	37	};
	38
4cc7720c HX	39	struct crypto_instance;
	40	struct crypto_template;
	41
2825982d HX	42	struct crypto_larval {
	43	struct crypto_alg alg;
	44	struct crypto_alg *adult;
	45	struct completion completion;
492e2b63	46	u32 mask;
2825982d HX	47	};
2825982d HX	48
5cb1454b HX	49	extern struct list_head crypto_alg_list;
5cb1454b HX	50	extern struct rw_semaphore crypto_alg_sem;
2825982d	51	extern struct blocking_notifier_head crypto_chain;
5cb1454b	52
1da177e4 LT	53	#ifdef CONFIG_PROC_FS
1da177e4 LT	54	void __init crypto_init_proc(void);
cce9e06d	55	void __exit crypto_exit_proc(void);
1da177e4 LT	56	#else
	57	static inline void crypto_init_proc(void)
	58	{ }
cce9e06d HX	59	static inline void crypto_exit_proc(void)
cce9e06d HX	60	{ }
1da177e4 LT	61	#endif
1da177e4 LT	62
f1ddcaf3	63	static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
fbdae9f3	64	{
f1ddcaf3	65	return alg->cra_ctxsize;
fbdae9f3 HX	66	}
fbdae9f3 HX	67
f1ddcaf3	68	static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
fbdae9f3 HX	69	{
	70	return alg->cra_ctxsize;
	71	}
	72
2825982d	73	struct crypto_alg crypto_mod_get(struct crypto_alg alg);
c51b6c81	74	struct crypto_alg crypto_alg_lookup(const char name, u32 type, u32 mask);
492e2b63	75	struct crypto_alg crypto_alg_mod_lookup(const char name, u32 type, u32 mask);
2825982d	76
1da177e4 LT	77	int crypto_init_cipher_ops(struct crypto_tfm *tfm);
	78	int crypto_init_compress_ops(struct crypto_tfm *tfm);
	79
1da177e4 LT	80	void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
	81	void crypto_exit_compress_ops(struct crypto_tfm *tfm);
	82
73d3864a	83	struct crypto_larval crypto_larval_alloc(const char name, u32 type, u32 mask);
b9c55aa4 HX	84	void crypto_larval_kill(struct crypto_alg *alg);
b9c55aa4 HX	85	struct crypto_alg crypto_larval_lookup(const char name, u32 type, u32 mask);
73d3864a	86	void crypto_alg_tested(const char *name, int err);
2825982d	87
89b596ba SK	88	void crypto_remove_spawns(struct crypto_alg alg, struct list_head list,
89b596ba SK	89	struct crypto_alg *nalg);
22e5b20b	90	void crypto_remove_final(struct list_head *list);
6bfd4809	91	void crypto_shoot_alg(struct crypto_alg *alg);
27d2a330 HX	92	struct crypto_tfm __crypto_alloc_tfm(struct crypto_alg alg, u32 type,
27d2a330 HX	93	u32 mask);
3f683d61 HX	94	void crypto_create_tfm(struct crypto_alg alg,
3f683d61 HX	95	const struct crypto_type *frontend);
d06854f0 HX	96	struct crypto_alg crypto_find_alg(const char alg_name,
	97	const struct crypto_type *frontend,
	98	u32 type, u32 mask);
3f683d61 HX	99	void crypto_alloc_tfm(const char alg_name,
3f683d61 HX	100	const struct crypto_type *frontend, u32 type, u32 mask);
4cc7720c	101
2825982d HX	102	int crypto_register_notifier(struct notifier_block *nb);
2825982d HX	103	int crypto_unregister_notifier(struct notifier_block *nb);
73d3864a	104	int crypto_probing_notify(unsigned long val, void *v);
2825982d	105
939e1779 HX	106	static inline struct crypto_alg crypto_alg_get(struct crypto_alg alg)
	107	{
	108	atomic_inc(&alg->cra_refcnt);
	109	return alg;
	110	}
	111
6bfd4809 HX	112	static inline void crypto_alg_put(struct crypto_alg *alg)
	113	{
	114	if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
	115	alg->cra_destroy(alg);
	116	}
	117
4cc7720c HX	118	static inline int crypto_tmpl_get(struct crypto_template *tmpl)
	119	{
	120	return try_module_get(tmpl->module);
	121	}
	122
	123	static inline void crypto_tmpl_put(struct crypto_template *tmpl)
	124	{
	125	module_put(tmpl->module);
	126	}
	127
2825982d HX	128	static inline int crypto_is_larval(struct crypto_alg *alg)
	129	{
	130	return alg->cra_flags & CRYPTO_ALG_LARVAL;
	131	}
	132
6bfd4809 HX	133	static inline int crypto_is_dead(struct crypto_alg *alg)
	134	{
	135	return alg->cra_flags & CRYPTO_ALG_DEAD;
	136	}
	137
	138	static inline int crypto_is_moribund(struct crypto_alg *alg)
	139	{
	140	return alg->cra_flags & (CRYPTO_ALG_DEAD \| CRYPTO_ALG_DYING);
	141	}
	142
73d3864a	143	static inline void crypto_notify(unsigned long val, void *v)
2825982d	144	{
73d3864a	145	blocking_notifier_call_chain(&crypto_chain, val, v);
2825982d HX	146	}
2825982d HX	147
1da177e4 LT	148	#endif /* _CRYPTO_INTERNAL_H */
1da177e4 LT	149