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/crypto/internal.h

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 141 lines | 105 code | 23 blank | 13 comment | 2 complexity | 875dfbba6b935115b3a06cae84f6335b MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  1/*
  2 * Cryptographic API.
  3 *
  4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
  5 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
  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
  9 * Software Foundation; either version 2 of the License, or (at your option)
 10 * any later version.
 11 *
 12 */
 13#ifndef _CRYPTO_INTERNAL_H
 14#define _CRYPTO_INTERNAL_H
 15
 16#include <crypto/algapi.h>
 17#include <linux/completion.h>
 18#include <linux/mm.h>
 19#include <linux/highmem.h>
 20#include <linux/interrupt.h>
 21#include <linux/init.h>
 22#include <linux/list.h>
 23#include <linux/module.h>
 24#include <linux/kernel.h>
 25#include <linux/notifier.h>
 26#include <linux/rwsem.h>
 27#include <linux/slab.h>
 28#include <linux/fips.h>
 29
 30/* Crypto notification events. */
 31enum {
 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
 39struct crypto_instance;
 40struct crypto_template;
 41
 42struct crypto_larval {
 43	struct crypto_alg alg;
 44	struct crypto_alg *adult;
 45	struct completion completion;
 46	u32 mask;
 47};
 48
 49extern struct list_head crypto_alg_list;
 50extern struct rw_semaphore crypto_alg_sem;
 51extern struct blocking_notifier_head crypto_chain;
 52
 53#ifdef CONFIG_PROC_FS
 54void __init crypto_init_proc(void);
 55void __exit crypto_exit_proc(void);
 56#else
 57static inline void crypto_init_proc(void)
 58{ }
 59static inline void crypto_exit_proc(void)
 60{ }
 61#endif
 62
 63static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
 64{
 65	return alg->cra_ctxsize;
 66}
 67
 68static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
 69{
 70	return alg->cra_ctxsize;
 71}
 72
 73struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
 74struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
 75struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
 76
 77int crypto_init_cipher_ops(struct crypto_tfm *tfm);
 78int crypto_init_compress_ops(struct crypto_tfm *tfm);
 79
 80void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
 81void crypto_exit_compress_ops(struct crypto_tfm *tfm);
 82
 83struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
 84void crypto_larval_kill(struct crypto_alg *alg);
 85struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
 86void crypto_larval_error(const char *name, u32 type, u32 mask);
 87void crypto_alg_tested(const char *name, int err);
 88
 89void crypto_shoot_alg(struct crypto_alg *alg);
 90struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
 91				      u32 mask);
 92void *crypto_create_tfm(struct crypto_alg *alg,
 93			const struct crypto_type *frontend);
 94struct crypto_alg *crypto_find_alg(const char *alg_name,
 95				   const struct crypto_type *frontend,
 96				   u32 type, u32 mask);
 97void *crypto_alloc_tfm(const char *alg_name,
 98		       const struct crypto_type *frontend, u32 type, u32 mask);
 99
100int crypto_register_notifier(struct notifier_block *nb);
101int crypto_unregister_notifier(struct notifier_block *nb);
102int crypto_probing_notify(unsigned long val, void *v);
103
104static inline void crypto_alg_put(struct crypto_alg *alg)
105{
106	if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
107		alg->cra_destroy(alg);
108}
109
110static inline int crypto_tmpl_get(struct crypto_template *tmpl)
111{
112	return try_module_get(tmpl->module);
113}
114
115static inline void crypto_tmpl_put(struct crypto_template *tmpl)
116{
117	module_put(tmpl->module);
118}
119
120static inline int crypto_is_larval(struct crypto_alg *alg)
121{
122	return alg->cra_flags & CRYPTO_ALG_LARVAL;
123}
124
125static inline int crypto_is_dead(struct crypto_alg *alg)
126{
127	return alg->cra_flags & CRYPTO_ALG_DEAD;
128}
129
130static inline int crypto_is_moribund(struct crypto_alg *alg)
131{
132	return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
133}
134
135static inline void crypto_notify(unsigned long val, void *v)
136{
137	blocking_notifier_call_chain(&crypto_chain, val, v);
138}
139
140#endif	/* _CRYPTO_INTERNAL_H */
141