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>
28 #include <linux/fips.h>
30 /* Crypto notification events. */
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,
39 struct crypto_instance;
40 struct crypto_template;
42 struct crypto_larval {
43 struct crypto_alg alg;
44 struct crypto_alg *adult;
45 struct completion completion;
49 extern struct list_head crypto_alg_list;
50 extern struct rw_semaphore crypto_alg_sem;
51 extern struct blocking_notifier_head crypto_chain;
54 void __init crypto_init_proc(void);
55 void __exit crypto_exit_proc(void);
57 static inline void crypto_init_proc(void)
59 static inline void crypto_exit_proc(void)
63 static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg)
65 unsigned int len = alg->cra_ctxsize;
67 if (alg->cra_alignmask) {
68 len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
69 len += alg->cra_digest.dia_digestsize;
75 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
77 return alg->cra_ctxsize;
80 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
82 return alg->cra_ctxsize;
85 struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
86 struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
87 struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
89 int crypto_init_digest_ops(struct crypto_tfm *tfm);
90 int crypto_init_digest_ops_async(struct crypto_tfm *tfm);
91 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
92 int crypto_init_compress_ops(struct crypto_tfm *tfm);
94 void crypto_exit_digest_ops(struct crypto_tfm *tfm);
95 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
96 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
98 struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
99 void crypto_larval_kill(struct crypto_alg *alg);
100 struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
101 void crypto_larval_error(const char *name, u32 type, u32 mask);
102 void crypto_alg_tested(const char *name, int err);
104 void crypto_shoot_alg(struct crypto_alg *alg);
105 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
107 void *crypto_create_tfm(struct crypto_alg *alg,
108 const struct crypto_type *frontend);
109 void *crypto_alloc_tfm(const char *alg_name,
110 const struct crypto_type *frontend, u32 type, u32 mask);
112 int crypto_register_instance(struct crypto_template *tmpl,
113 struct crypto_instance *inst);
115 int crypto_register_notifier(struct notifier_block *nb);
116 int crypto_unregister_notifier(struct notifier_block *nb);
117 int crypto_probing_notify(unsigned long val, void *v);
119 static inline void crypto_alg_put(struct crypto_alg *alg)
121 if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
122 alg->cra_destroy(alg);
125 static inline int crypto_tmpl_get(struct crypto_template *tmpl)
127 return try_module_get(tmpl->module);
130 static inline void crypto_tmpl_put(struct crypto_template *tmpl)
132 module_put(tmpl->module);
135 static inline int crypto_is_larval(struct crypto_alg *alg)
137 return alg->cra_flags & CRYPTO_ALG_LARVAL;
140 static inline int crypto_is_dead(struct crypto_alg *alg)
142 return alg->cra_flags & CRYPTO_ALG_DEAD;
145 static inline int crypto_is_moribund(struct crypto_alg *alg)
147 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
150 static inline void crypto_notify(unsigned long val, void *v)
152 blocking_notifier_call_chain(&crypto_chain, val, v);
155 #endif /* _CRYPTO_INTERNAL_H */