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_digest_ctxsize(struct crypto_alg *alg)
64 unsigned int len = alg->cra_ctxsize;
66 if (alg->cra_alignmask) {
67 len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
68 len += alg->cra_digest.dia_digestsize;
74 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
76 return alg->cra_ctxsize;
79 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
81 return alg->cra_ctxsize;
84 struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
85 struct crypto_alg *__crypto_alg_lookup(const char *name, u32 type, u32 mask);
86 struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
88 int crypto_init_digest_ops(struct crypto_tfm *tfm);
89 int crypto_init_digest_ops_async(struct crypto_tfm *tfm);
90 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
91 int crypto_init_compress_ops(struct crypto_tfm *tfm);
93 void crypto_exit_digest_ops(struct crypto_tfm *tfm);
94 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
95 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
97 void crypto_larval_kill(struct crypto_alg *alg);
98 struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
99 void crypto_larval_error(const char *name, u32 type, u32 mask);
101 void crypto_shoot_alg(struct crypto_alg *alg);
102 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
105 int crypto_register_instance(struct crypto_template *tmpl,
106 struct crypto_instance *inst);
108 int crypto_register_notifier(struct notifier_block *nb);
109 int crypto_unregister_notifier(struct notifier_block *nb);
111 static inline void crypto_alg_put(struct crypto_alg *alg)
113 if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
114 alg->cra_destroy(alg);
117 static inline int crypto_tmpl_get(struct crypto_template *tmpl)
119 return try_module_get(tmpl->module);
122 static inline void crypto_tmpl_put(struct crypto_template *tmpl)
124 module_put(tmpl->module);
127 static inline int crypto_is_larval(struct crypto_alg *alg)
129 return alg->cra_flags & CRYPTO_ALG_LARVAL;
132 static inline int crypto_is_dead(struct crypto_alg *alg)
134 return alg->cra_flags & CRYPTO_ALG_DEAD;
137 static inline int crypto_is_moribund(struct crypto_alg *alg)
139 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
142 static inline int crypto_notify(unsigned long val, void *v)
144 return blocking_notifier_call_chain(&crypto_chain, val, v);
147 #endif /* _CRYPTO_INTERNAL_H */