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/list.h>
14 #include <linux/module.h>
15 #include <linux/notifier.h>
16 #include <linux/numa.h>
17 #include <linux/refcount.h>
18 #include <linux/rwsem.h>
19 #include <linux/sched.h>
20 #include <linux/types.h>
21
22 struct crypto_instance;
23 struct crypto_template;
24
25 struct crypto_larval {
26 struct crypto_alg alg;
27 struct crypto_alg *adult;
28 struct completion completion;
29 u32 mask;
30 };
31
32 extern struct list_head crypto_alg_list;
33 extern struct rw_semaphore crypto_alg_sem;
34 extern struct blocking_notifier_head crypto_chain;
35
36 #ifdef CONFIG_PROC_FS
37 void __init crypto_init_proc(void);
38 void __exit crypto_exit_proc(void);
39 #else
crypto_init_proc(void)40 static inline void crypto_init_proc(void)
41 { }
crypto_exit_proc(void)42 static inline void crypto_exit_proc(void)
43 { }
44 #endif
45
crypto_cipher_ctxsize(struct crypto_alg * alg)46 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
47 {
48 return alg->cra_ctxsize;
49 }
50
crypto_compress_ctxsize(struct crypto_alg * alg)51 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
52 {
53 return alg->cra_ctxsize;
54 }
55
56 struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
57 struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
58
59 struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
60 void crypto_larval_kill(struct crypto_alg *alg);
61 void crypto_alg_tested(const char *name, int err);
62
63 void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
64 struct crypto_alg *nalg);
65 void crypto_remove_final(struct list_head *list);
66 void crypto_shoot_alg(struct crypto_alg *alg);
67 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
68 u32 mask);
69 void *crypto_create_tfm_node(struct crypto_alg *alg,
70 const struct crypto_type *frontend, int node);
71
crypto_create_tfm(struct crypto_alg * alg,const struct crypto_type * frontend)72 static inline void *crypto_create_tfm(struct crypto_alg *alg,
73 const struct crypto_type *frontend)
74 {
75 return crypto_create_tfm_node(alg, frontend, NUMA_NO_NODE);
76 }
77
78 struct crypto_alg *crypto_find_alg(const char *alg_name,
79 const struct crypto_type *frontend,
80 u32 type, u32 mask);
81
82 void *crypto_alloc_tfm_node(const char *alg_name,
83 const struct crypto_type *frontend, u32 type, u32 mask,
84 int node);
85
crypto_alloc_tfm(const char * alg_name,const struct crypto_type * frontend,u32 type,u32 mask)86 static inline void *crypto_alloc_tfm(const char *alg_name,
87 const struct crypto_type *frontend, u32 type, u32 mask)
88 {
89 return crypto_alloc_tfm_node(alg_name, frontend, type, mask, NUMA_NO_NODE);
90 }
91
92 int crypto_probing_notify(unsigned long val, void *v);
93
94 unsigned int crypto_alg_extsize(struct crypto_alg *alg);
95
96 int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
97 u32 type, u32 mask);
98
crypto_alg_get(struct crypto_alg * alg)99 static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
100 {
101 refcount_inc(&alg->cra_refcnt);
102 return alg;
103 }
104
crypto_alg_put(struct crypto_alg * alg)105 static inline void crypto_alg_put(struct crypto_alg *alg)
106 {
107 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
108 alg->cra_destroy(alg);
109 }
110
crypto_tmpl_get(struct crypto_template * tmpl)111 static inline int crypto_tmpl_get(struct crypto_template *tmpl)
112 {
113 return try_module_get(tmpl->module);
114 }
115
crypto_tmpl_put(struct crypto_template * tmpl)116 static inline void crypto_tmpl_put(struct crypto_template *tmpl)
117 {
118 module_put(tmpl->module);
119 }
120
crypto_is_larval(struct crypto_alg * alg)121 static inline int crypto_is_larval(struct crypto_alg *alg)
122 {
123 return alg->cra_flags & CRYPTO_ALG_LARVAL;
124 }
125
crypto_is_dead(struct crypto_alg * alg)126 static inline int crypto_is_dead(struct crypto_alg *alg)
127 {
128 return alg->cra_flags & CRYPTO_ALG_DEAD;
129 }
130
crypto_is_moribund(struct crypto_alg * alg)131 static inline int crypto_is_moribund(struct crypto_alg *alg)
132 {
133 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
134 }
135
crypto_notify(unsigned long val,void * v)136 static inline void crypto_notify(unsigned long val, void *v)
137 {
138 blocking_notifier_call_chain(&crypto_chain, val, v);
139 }
140
crypto_yield(u32 flags)141 static inline void crypto_yield(u32 flags)
142 {
143 if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)
144 cond_resched();
145 }
146
147 #endif /* _CRYPTO_INTERNAL_H */
148
149