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 <asm/kmap_types.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
;
53 extern enum km_type crypto_km_types
[];
55 static inline enum km_type
crypto_kmap_type(int out
)
57 return crypto_km_types
[(in_softirq() ? 2 : 0) + out
];
60 static inline void *crypto_kmap(struct page
*page
, int out
)
62 return kmap_atomic(page
, crypto_kmap_type(out
));
65 static inline void crypto_kunmap(void *vaddr
, int out
)
67 kunmap_atomic(vaddr
, crypto_kmap_type(out
));
70 static inline void crypto_yield(struct crypto_tfm
*tfm
)
72 if (tfm
->crt_flags
& CRYPTO_TFM_REQ_MAY_SLEEP
)
76 #ifdef CONFIG_CRYPTO_HMAC
77 int crypto_alloc_hmac_block(struct crypto_tfm
*tfm
);
78 void crypto_free_hmac_block(struct crypto_tfm
*tfm
);
80 static inline int crypto_alloc_hmac_block(struct crypto_tfm
*tfm
)
85 static inline void crypto_free_hmac_block(struct crypto_tfm
*tfm
)
90 void __init
crypto_init_proc(void);
91 void __exit
crypto_exit_proc(void);
93 static inline void crypto_init_proc(void)
95 static inline void crypto_exit_proc(void)
99 static inline unsigned int crypto_digest_ctxsize(struct crypto_alg
*alg
,
102 return alg
->cra_ctxsize
;
105 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg
*alg
,
108 unsigned int len
= alg
->cra_ctxsize
;
110 switch (flags
& CRYPTO_TFM_MODE_MASK
) {
111 case CRYPTO_TFM_MODE_CBC
:
112 len
= ALIGN(len
, (unsigned long)alg
->cra_alignmask
+ 1);
113 len
+= alg
->cra_blocksize
;
120 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg
*alg
,
123 return alg
->cra_ctxsize
;
126 struct crypto_alg
*crypto_mod_get(struct crypto_alg
*alg
);
127 void crypto_mod_put(struct crypto_alg
*alg
);
128 struct crypto_alg
*__crypto_alg_lookup(const char *name
, u32 type
, u32 mask
);
129 struct crypto_alg
*crypto_alg_mod_lookup(const char *name
, u32 type
, u32 mask
);
131 int crypto_init_digest_flags(struct crypto_tfm
*tfm
, u32 flags
);
132 int crypto_init_cipher_flags(struct crypto_tfm
*tfm
, u32 flags
);
133 int crypto_init_compress_flags(struct crypto_tfm
*tfm
, u32 flags
);
135 int crypto_init_digest_ops(struct crypto_tfm
*tfm
);
136 int crypto_init_cipher_ops(struct crypto_tfm
*tfm
);
137 int crypto_init_compress_ops(struct crypto_tfm
*tfm
);
139 void crypto_exit_digest_ops(struct crypto_tfm
*tfm
);
140 void crypto_exit_cipher_ops(struct crypto_tfm
*tfm
);
141 void crypto_exit_compress_ops(struct crypto_tfm
*tfm
);
143 void crypto_larval_error(const char *name
, u32 type
, u32 mask
);
145 int crypto_register_instance(struct crypto_template
*tmpl
,
146 struct crypto_instance
*inst
);
148 int crypto_register_notifier(struct notifier_block
*nb
);
149 int crypto_unregister_notifier(struct notifier_block
*nb
);
151 static inline int crypto_tmpl_get(struct crypto_template
*tmpl
)
153 return try_module_get(tmpl
->module
);
156 static inline void crypto_tmpl_put(struct crypto_template
*tmpl
)
158 module_put(tmpl
->module
);
161 static inline int crypto_is_larval(struct crypto_alg
*alg
)
163 return alg
->cra_flags
& CRYPTO_ALG_LARVAL
;
166 static inline int crypto_notify(unsigned long val
, void *v
)
168 return blocking_notifier_call_chain(&crypto_chain
, val
, v
);
171 #endif /* _CRYPTO_INTERNAL_H */