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
 29/* Crypto notification events. */
 30enum {
 31	CRYPTO_MSG_ALG_REQUEST,
 32	CRYPTO_MSG_ALG_REGISTER,
 
 
 
 33};
 34
 35struct crypto_instance;
 36struct crypto_template;
 37
 38struct crypto_larval {
 39	struct crypto_alg alg;
 40	struct crypto_alg *adult;
 41	struct completion completion;
 42	u32 mask;
 43};
 44
 45extern struct list_head crypto_alg_list;
 46extern struct rw_semaphore crypto_alg_sem;
 47extern struct blocking_notifier_head crypto_chain;
 48
 49#ifdef CONFIG_PROC_FS
 50void __init crypto_init_proc(void);
 51void __exit crypto_exit_proc(void);
 52#else
 53static inline void crypto_init_proc(void)
 54{ }
 55static inline void crypto_exit_proc(void)
 56{ }
 57#endif
 58
 59static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
 60{
 61	return alg->cra_ctxsize;
 62}
 63
 64static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
 65{
 66	return alg->cra_ctxsize;
 67}
 68
 69struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
 
 70struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
 71
 72int crypto_init_cipher_ops(struct crypto_tfm *tfm);
 73int crypto_init_compress_ops(struct crypto_tfm *tfm);
 74
 
 
 
 75struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
 76void crypto_larval_kill(struct crypto_alg *alg);
 
 77void crypto_alg_tested(const char *name, int err);
 78
 79void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
 80			  struct crypto_alg *nalg);
 81void crypto_remove_final(struct list_head *list);
 82void crypto_shoot_alg(struct crypto_alg *alg);
 83struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
 84				      u32 mask);
 85void *crypto_create_tfm(struct crypto_alg *alg,
 86			const struct crypto_type *frontend);
 87struct crypto_alg *crypto_find_alg(const char *alg_name,
 88				   const struct crypto_type *frontend,
 89				   u32 type, u32 mask);
 90void *crypto_alloc_tfm(const char *alg_name,
 91		       const struct crypto_type *frontend, u32 type, u32 mask);
 92
 93int crypto_register_notifier(struct notifier_block *nb);
 94int crypto_unregister_notifier(struct notifier_block *nb);
 95int crypto_probing_notify(unsigned long val, void *v);
 96
 97unsigned int crypto_alg_extsize(struct crypto_alg *alg);
 98
 99int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
100			u32 type, u32 mask);
101
102static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
103{
104	refcount_inc(&alg->cra_refcnt);
105	return alg;
106}
107
108static inline void crypto_alg_put(struct crypto_alg *alg)
109{
110	if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
111		alg->cra_destroy(alg);
112}
113
114static inline int crypto_tmpl_get(struct crypto_template *tmpl)
115{
116	return try_module_get(tmpl->module);
117}
118
119static inline void crypto_tmpl_put(struct crypto_template *tmpl)
120{
121	module_put(tmpl->module);
122}
123
124static inline int crypto_is_larval(struct crypto_alg *alg)
125{
126	return alg->cra_flags & CRYPTO_ALG_LARVAL;
127}
128
129static inline int crypto_is_dead(struct crypto_alg *alg)
130{
131	return alg->cra_flags & CRYPTO_ALG_DEAD;
132}
133
134static inline int crypto_is_moribund(struct crypto_alg *alg)
135{
136	return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
137}
138
139static inline void crypto_notify(unsigned long val, void *v)
140{
141	blocking_notifier_call_chain(&crypto_chain, val, v);
142}
143
144#endif	/* _CRYPTO_INTERNAL_H */
145

  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_alg_tested(const char *name, int err);
 87
 88void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
 89			  struct crypto_alg *nalg);
 90void crypto_remove_final(struct list_head *list);
 91void crypto_shoot_alg(struct crypto_alg *alg);
 92struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
 93				      u32 mask);
 94void *crypto_create_tfm(struct crypto_alg *alg,
 95			const struct crypto_type *frontend);
 96struct crypto_alg *crypto_find_alg(const char *alg_name,
 97				   const struct crypto_type *frontend,
 98				   u32 type, u32 mask);
 99void *crypto_alloc_tfm(const char *alg_name,
100		       const struct crypto_type *frontend, u32 type, u32 mask);
101
102int crypto_register_notifier(struct notifier_block *nb);
103int crypto_unregister_notifier(struct notifier_block *nb);
104int crypto_probing_notify(unsigned long val, void *v);
105
 
 
 
 
 
106static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
107{
108	atomic_inc(&alg->cra_refcnt);
109	return alg;
110}
111
112static 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
118static inline int crypto_tmpl_get(struct crypto_template *tmpl)
119{
120	return try_module_get(tmpl->module);
121}
122
123static inline void crypto_tmpl_put(struct crypto_template *tmpl)
124{
125	module_put(tmpl->module);
126}
127
128static inline int crypto_is_larval(struct crypto_alg *alg)
129{
130	return alg->cra_flags & CRYPTO_ALG_LARVAL;
131}
132
133static inline int crypto_is_dead(struct crypto_alg *alg)
134{
135	return alg->cra_flags & CRYPTO_ALG_DEAD;
136}
137
138static inline int crypto_is_moribund(struct crypto_alg *alg)
139{
140	return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
141}
142
143static inline void crypto_notify(unsigned long val, void *v)
144{
145	blocking_notifier_call_chain(&crypto_chain, val, v);
146}
147
148#endif	/* _CRYPTO_INTERNAL_H */
149