OpenWrt – Blame information for rev 1

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1 office 1 /*
2 * Cryptographic API.
3 *
4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
6 *
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)
10 * any later version.
11 *
12 */
13 #ifndef _CRYPTO_INTERNAL_H
14 #define _CRYPTO_INTERNAL_H
15  
16 #include <crypto/algapi.h>
17 #include <linux/completion.h>
18 #include <linux/mm.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>
29  
30 /* Crypto notification events. */
31 enum {
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,
37 };
38  
39 struct crypto_instance;
40 struct crypto_template;
41  
42 struct crypto_larval {
43 struct crypto_alg alg;
44 struct crypto_alg *adult;
45 struct completion completion;
46 u32 mask;
47 };
48  
49 extern struct list_head crypto_alg_list;
50 extern struct rw_semaphore crypto_alg_sem;
51 extern struct blocking_notifier_head crypto_chain;
52  
53 #ifdef CONFIG_PROC_FS
54 void __init crypto_init_proc(void);
55 void __exit crypto_exit_proc(void);
56 #else
57 static inline void crypto_init_proc(void)
58 { }
59 static inline void crypto_exit_proc(void)
60 { }
61 #endif
62  
63 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
64 {
65 return alg->cra_ctxsize;
66 }
67  
68 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
69 {
70 return alg->cra_ctxsize;
71 }
72  
73 struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
74 struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
75 struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
76  
77 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
78 int crypto_init_compress_ops(struct crypto_tfm *tfm);
79  
80 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
81 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
82  
83 struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
84 void crypto_larval_kill(struct crypto_alg *alg);
85 struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
86 void crypto_larval_error(const char *name, u32 type, u32 mask);
87 void crypto_alg_tested(const char *name, int err);
88  
89 void crypto_shoot_alg(struct crypto_alg *alg);
90 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
91 u32 mask);
92 void *crypto_create_tfm(struct crypto_alg *alg,
93 const struct crypto_type *frontend);
94 struct crypto_alg *crypto_find_alg(const char *alg_name,
95 const struct crypto_type *frontend,
96 u32 type, u32 mask);
97 void *crypto_alloc_tfm(const char *alg_name,
98 const struct crypto_type *frontend, u32 type, u32 mask);
99  
100 int crypto_register_notifier(struct notifier_block *nb);
101 int crypto_unregister_notifier(struct notifier_block *nb);
102 int crypto_probing_notify(unsigned long val, void *v);
103  
104 static inline void crypto_alg_put(struct crypto_alg *alg)
105 {
106 if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
107 alg->cra_destroy(alg);
108 }
109  
110 static inline int crypto_tmpl_get(struct crypto_template *tmpl)
111 {
112 return try_module_get(tmpl->module);
113 }
114  
115 static inline void crypto_tmpl_put(struct crypto_template *tmpl)
116 {
117 module_put(tmpl->module);
118 }
119  
120 static inline int crypto_is_larval(struct crypto_alg *alg)
121 {
122 return alg->cra_flags & CRYPTO_ALG_LARVAL;
123 }
124  
125 static inline int crypto_is_dead(struct crypto_alg *alg)
126 {
127 return alg->cra_flags & CRYPTO_ALG_DEAD;
128 }
129  
130 static inline int crypto_is_moribund(struct crypto_alg *alg)
131 {
132 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
133 }
134  
135 static inline void crypto_notify(unsigned long val, void *v)
136 {
137 blocking_notifier_call_chain(&crypto_chain, val, v);
138 }
139  
140 #endif /* _CRYPTO_INTERNAL_H */
141