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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
22struct crypto_instance;
23struct crypto_template;
24
25struct crypto_larval {
26 struct crypto_alg alg;
27 struct crypto_alg *adult;
28 struct completion completion;
29 u32 mask;
30};
31
32extern struct list_head crypto_alg_list;
33extern struct rw_semaphore crypto_alg_sem;
34extern struct blocking_notifier_head crypto_chain;
35
36#ifdef CONFIG_PROC_FS
37void __init crypto_init_proc(void);
38void __exit crypto_exit_proc(void);
39#else
40static inline void crypto_init_proc(void)
41{ }
42static inline void crypto_exit_proc(void)
43{ }
44#endif
45
46static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
47{
48 return alg->cra_ctxsize;
49}
50
51static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
52{
53 return alg->cra_ctxsize;
54}
55
56struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
57struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
58
59struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
60void crypto_larval_kill(struct crypto_alg *alg);
61void crypto_alg_tested(const char *name, int err);
62
63void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
64 struct crypto_alg *nalg);
65void crypto_remove_final(struct list_head *list);
66void crypto_shoot_alg(struct crypto_alg *alg);
67struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
68 u32 mask);
69void *crypto_create_tfm_node(struct crypto_alg *alg,
70 const struct crypto_type *frontend, int node);
71
72static 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
78struct crypto_alg *crypto_find_alg(const char *alg_name,
79 const struct crypto_type *frontend,
80 u32 type, u32 mask);
81
82void *crypto_alloc_tfm_node(const char *alg_name,
83 const struct crypto_type *frontend, u32 type, u32 mask,
84 int node);
85
86static 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
92int crypto_probing_notify(unsigned long val, void *v);
93
94unsigned int crypto_alg_extsize(struct crypto_alg *alg);
95
96int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
97 u32 type, u32 mask);
98
99static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
100{
101 refcount_inc(&alg->cra_refcnt);
102 return alg;
103}
104
105static 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
111static inline int crypto_tmpl_get(struct crypto_template *tmpl)
112{
113 return try_module_get(tmpl->module);
114}
115
116static inline void crypto_tmpl_put(struct crypto_template *tmpl)
117{
118 module_put(tmpl->module);
119}
120
121static inline int crypto_is_larval(struct crypto_alg *alg)
122{
123 return alg->cra_flags & CRYPTO_ALG_LARVAL;
124}
125
126static inline int crypto_is_dead(struct crypto_alg *alg)
127{
128 return alg->cra_flags & CRYPTO_ALG_DEAD;
129}
130
131static inline int crypto_is_moribund(struct crypto_alg *alg)
132{
133 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
134}
135
136static inline void crypto_notify(unsigned long val, void *v)
137{
138 blocking_notifier_call_chain(&crypto_chain, val, v);
139}
140
141static 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