4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
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)
13 #ifndef _CRYPTO_INTERNAL_H
14 #define _CRYPTO_INTERNAL_H
16 #include <crypto/algapi.h>
17 #include <linux/completion.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>
29 /* Crypto notification events. */
31 CRYPTO_MSG_ALG_REQUEST,
32 CRYPTO_MSG_ALG_REGISTER,
33 CRYPTO_MSG_ALG_UNREGISTER,
34 CRYPTO_MSG_TMPL_REGISTER,
35 CRYPTO_MSG_TMPL_UNREGISTER,
38 struct crypto_instance;
39 struct crypto_template;
41 struct crypto_larval {
42 struct crypto_alg alg;
43 struct crypto_alg *adult;
44 struct completion completion;
48 extern struct list_head crypto_alg_list;
49 extern struct rw_semaphore crypto_alg_sem;
50 extern struct blocking_notifier_head crypto_chain;
53 void __init crypto_init_proc(void);
54 void __exit crypto_exit_proc(void);
56 static inline void crypto_init_proc(void)
58 static inline void crypto_exit_proc(void)
62 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
64 return alg->cra_ctxsize;
67 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
69 return alg->cra_ctxsize;
72 struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
73 struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
74 struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
76 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
77 int crypto_init_compress_ops(struct crypto_tfm *tfm);
79 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
80 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
82 struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
83 void crypto_larval_kill(struct crypto_alg *alg);
84 struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
85 void crypto_alg_tested(const char *name, int err);
87 void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
88 struct crypto_alg *nalg);
89 void crypto_remove_final(struct list_head *list);
90 void crypto_shoot_alg(struct crypto_alg *alg);
91 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
93 void *crypto_create_tfm(struct crypto_alg *alg,
94 const struct crypto_type *frontend);
95 struct crypto_alg *crypto_find_alg(const char *alg_name,
96 const struct crypto_type *frontend,
98 void *crypto_alloc_tfm(const char *alg_name,
99 const struct crypto_type *frontend, u32 type, u32 mask);
101 int crypto_register_notifier(struct notifier_block *nb);
102 int crypto_unregister_notifier(struct notifier_block *nb);
103 int crypto_probing_notify(unsigned long val, void *v);
105 unsigned int crypto_alg_extsize(struct crypto_alg *alg);
107 static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
109 atomic_inc(&alg->cra_refcnt);
113 static inline void crypto_alg_put(struct crypto_alg *alg)
115 if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
116 alg->cra_destroy(alg);
119 static inline int crypto_tmpl_get(struct crypto_template *tmpl)
121 return try_module_get(tmpl->module);
124 static inline void crypto_tmpl_put(struct crypto_template *tmpl)
126 module_put(tmpl->module);
129 static inline int crypto_is_larval(struct crypto_alg *alg)
131 return alg->cra_flags & CRYPTO_ALG_LARVAL;
134 static inline int crypto_is_dead(struct crypto_alg *alg)
136 return alg->cra_flags & CRYPTO_ALG_DEAD;
139 static inline int crypto_is_moribund(struct crypto_alg *alg)
141 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
144 static inline void crypto_notify(unsigned long val, void *v)
146 blocking_notifier_call_chain(&crypto_chain, val, v);
149 #endif /* _CRYPTO_INTERNAL_H */