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 */