1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Cryptographic API.
4 *
5 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
6 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
7 */
8 #ifndef _CRYPTO_INTERNAL_H
9 #define _CRYPTO_INTERNAL_H
10
11 #include <crypto/algapi.h>
12 #include <linux/completion.h>
13 #include <linux/mm.h>
14 #include <linux/highmem.h>
15 #include <linux/interrupt.h>
16 #include <linux/init.h>
17 #include <linux/list.h>
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/notifier.h>
21 #include <linux/rwsem.h>
22 #include <linux/slab.h>
23
24 struct crypto_instance;
25 struct crypto_template;
26
27 struct crypto_larval {
28 struct crypto_alg alg;
29 struct crypto_alg *adult;
30 struct completion completion;
31 u32 mask;
32 };
33
34 extern struct list_head crypto_alg_list;
35 extern struct rw_semaphore crypto_alg_sem;
36 extern struct blocking_notifier_head crypto_chain;
37
38 #ifdef CONFIG_PROC_FS
39 void __init crypto_init_proc(void);
40 void __exit crypto_exit_proc(void);
41 #else
crypto_init_proc(void)42 static inline void crypto_init_proc(void)
43 { }
crypto_exit_proc(void)44 static inline void crypto_exit_proc(void)
45 { }
46 #endif
47
crypto_cipher_ctxsize(struct crypto_alg * alg)48 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
49 {
50 return alg->cra_ctxsize;
51 }
52
crypto_compress_ctxsize(struct crypto_alg * alg)53 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
54 {
55 return alg->cra_ctxsize;
56 }
57
58 struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
59 struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
60
61 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
62 int crypto_init_compress_ops(struct crypto_tfm *tfm);
63
64 struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
65 void crypto_larval_kill(struct crypto_alg *alg);
66 void crypto_alg_tested(const char *name, int err);
67
68 void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
69 struct crypto_alg *nalg);
70 void crypto_remove_final(struct list_head *list);
71 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
72 u32 mask);
73 void *crypto_create_tfm(struct crypto_alg *alg,
74 const struct crypto_type *frontend);
75 struct crypto_alg *crypto_find_alg(const char *alg_name,
76 const struct crypto_type *frontend,
77 u32 type, u32 mask);
78 void *crypto_alloc_tfm(const char *alg_name,
79 const struct crypto_type *frontend, u32 type, u32 mask);
80
81 int crypto_probing_notify(unsigned long val, void *v);
82
83 unsigned int crypto_alg_extsize(struct crypto_alg *alg);
84
85 int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
86 u32 type, u32 mask);
87
crypto_alg_get(struct crypto_alg * alg)88 static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
89 {
90 refcount_inc(&alg->cra_refcnt);
91 return alg;
92 }
93
crypto_alg_put(struct crypto_alg * alg)94 static inline void crypto_alg_put(struct crypto_alg *alg)
95 {
96 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
97 alg->cra_destroy(alg);
98 }
99
crypto_tmpl_get(struct crypto_template * tmpl)100 static inline int crypto_tmpl_get(struct crypto_template *tmpl)
101 {
102 return try_module_get(tmpl->module);
103 }
104
crypto_tmpl_put(struct crypto_template * tmpl)105 static inline void crypto_tmpl_put(struct crypto_template *tmpl)
106 {
107 module_put(tmpl->module);
108 }
109
crypto_is_larval(struct crypto_alg * alg)110 static inline int crypto_is_larval(struct crypto_alg *alg)
111 {
112 return alg->cra_flags & CRYPTO_ALG_LARVAL;
113 }
114
crypto_is_dead(struct crypto_alg * alg)115 static inline int crypto_is_dead(struct crypto_alg *alg)
116 {
117 return alg->cra_flags & CRYPTO_ALG_DEAD;
118 }
119
crypto_is_moribund(struct crypto_alg * alg)120 static inline int crypto_is_moribund(struct crypto_alg *alg)
121 {
122 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
123 }
124
crypto_notify(unsigned long val,void * v)125 static inline void crypto_notify(unsigned long val, void *v)
126 {
127 blocking_notifier_call_chain(&crypto_chain, val, v);
128 }
129
130 #endif /* _CRYPTO_INTERNAL_H */
131
132