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 void crypto_shoot_alg(struct crypto_alg *alg);
72 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
73 u32 mask);
74 void *crypto_create_tfm(struct crypto_alg *alg,
75 const struct crypto_type *frontend);
76 struct crypto_alg *crypto_find_alg(const char *alg_name,
77 const struct crypto_type *frontend,
78 u32 type, u32 mask);
79 void *crypto_alloc_tfm(const char *alg_name,
80 const struct crypto_type *frontend, u32 type, u32 mask);
81
82 int crypto_probing_notify(unsigned long val, void *v);
83
84 unsigned int crypto_alg_extsize(struct crypto_alg *alg);
85
86 int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
87 u32 type, u32 mask);
88
crypto_alg_get(struct crypto_alg * alg)89 static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
90 {
91 refcount_inc(&alg->cra_refcnt);
92 return alg;
93 }
94
crypto_alg_put(struct crypto_alg * alg)95 static inline void crypto_alg_put(struct crypto_alg *alg)
96 {
97 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
98 alg->cra_destroy(alg);
99 }
100
crypto_tmpl_get(struct crypto_template * tmpl)101 static inline int crypto_tmpl_get(struct crypto_template *tmpl)
102 {
103 return try_module_get(tmpl->module);
104 }
105
crypto_tmpl_put(struct crypto_template * tmpl)106 static inline void crypto_tmpl_put(struct crypto_template *tmpl)
107 {
108 module_put(tmpl->module);
109 }
110
crypto_is_larval(struct crypto_alg * alg)111 static inline int crypto_is_larval(struct crypto_alg *alg)
112 {
113 return alg->cra_flags & CRYPTO_ALG_LARVAL;
114 }
115
crypto_is_dead(struct crypto_alg * alg)116 static inline int crypto_is_dead(struct crypto_alg *alg)
117 {
118 return alg->cra_flags & CRYPTO_ALG_DEAD;
119 }
120
crypto_is_moribund(struct crypto_alg * alg)121 static inline int crypto_is_moribund(struct crypto_alg *alg)
122 {
123 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
124 }
125
crypto_notify(unsigned long val,void * v)126 static inline void crypto_notify(unsigned long val, void *v)
127 {
128 blocking_notifier_call_chain(&crypto_chain, val, v);
129 }
130
131 #endif /* _CRYPTO_INTERNAL_H */
132
133