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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
29/* Crypto notification events. */
30enum {
31 CRYPTO_MSG_ALG_REQUEST,
32 CRYPTO_MSG_ALG_REGISTER,
33 CRYPTO_MSG_ALG_UNREGISTER,
34 CRYPTO_MSG_TMPL_REGISTER,
35 CRYPTO_MSG_TMPL_UNREGISTER,
36};
37
38struct crypto_instance;
39struct crypto_template;
40
41struct crypto_larval {
42 struct crypto_alg alg;
43 struct crypto_alg *adult;
44 struct completion completion;
45 u32 mask;
46};
47
48extern struct list_head crypto_alg_list;
49extern struct rw_semaphore crypto_alg_sem;
50extern struct blocking_notifier_head crypto_chain;
51
52#ifdef CONFIG_PROC_FS
53void __init crypto_init_proc(void);
54void __exit crypto_exit_proc(void);
55#else
56static inline void crypto_init_proc(void)
57{ }
58static inline void crypto_exit_proc(void)
59{ }
60#endif
61
62static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
63{
64 return alg->cra_ctxsize;
65}
66
67static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
68{
69 return alg->cra_ctxsize;
70}
71
72struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
73struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
74struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
75
76int crypto_init_cipher_ops(struct crypto_tfm *tfm);
77int crypto_init_compress_ops(struct crypto_tfm *tfm);
78
79void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
80void crypto_exit_compress_ops(struct crypto_tfm *tfm);
81
82struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
83void crypto_larval_kill(struct crypto_alg *alg);
84struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
85void crypto_alg_tested(const char *name, int err);
86
87void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
88 struct crypto_alg *nalg);
89void crypto_remove_final(struct list_head *list);
90void crypto_shoot_alg(struct crypto_alg *alg);
91struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
92 u32 mask);
93void *crypto_create_tfm(struct crypto_alg *alg,
94 const struct crypto_type *frontend);
95struct crypto_alg *crypto_find_alg(const char *alg_name,
96 const struct crypto_type *frontend,
97 u32 type, u32 mask);
98void *crypto_alloc_tfm(const char *alg_name,
99 const struct crypto_type *frontend, u32 type, u32 mask);
100
101int crypto_register_notifier(struct notifier_block *nb);
102int crypto_unregister_notifier(struct notifier_block *nb);
103int crypto_probing_notify(unsigned long val, void *v);
104
105unsigned int crypto_alg_extsize(struct crypto_alg *alg);
106
107int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
108 u32 type, u32 mask);
109
110static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
111{
112 atomic_inc(&alg->cra_refcnt);
113 return alg;
114}
115
116static inline void crypto_alg_put(struct crypto_alg *alg)
117{
118 if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
119 alg->cra_destroy(alg);
120}
121
122static inline int crypto_tmpl_get(struct crypto_template *tmpl)
123{
124 return try_module_get(tmpl->module);
125}
126
127static inline void crypto_tmpl_put(struct crypto_template *tmpl)
128{
129 module_put(tmpl->module);
130}
131
132static inline int crypto_is_larval(struct crypto_alg *alg)
133{
134 return alg->cra_flags & CRYPTO_ALG_LARVAL;
135}
136
137static inline int crypto_is_dead(struct crypto_alg *alg)
138{
139 return alg->cra_flags & CRYPTO_ALG_DEAD;
140}
141
142static inline int crypto_is_moribund(struct crypto_alg *alg)
143{
144 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
145}
146
147static inline void crypto_notify(unsigned long val, void *v)
148{
149 blocking_notifier_call_chain(&crypto_chain, val, v);
150}
151
152#endif /* _CRYPTO_INTERNAL_H */
153
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
32enum {
33 CRYPTOA_UNSPEC,
34 CRYPTOA_ALG,
35 CRYPTOA_TYPE,
36 __CRYPTOA_MAX,
37};
38
39#define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
40
41/* Maximum number of (rtattr) parameters for each template. */
42#define CRYPTO_MAX_ATTRS 32
43
44extern struct list_head crypto_alg_list;
45extern struct rw_semaphore crypto_alg_sem;
46extern struct blocking_notifier_head crypto_chain;
47
48#ifdef CONFIG_PROC_FS
49void __init crypto_init_proc(void);
50void __exit crypto_exit_proc(void);
51#else
52static inline void crypto_init_proc(void)
53{ }
54static inline void crypto_exit_proc(void)
55{ }
56#endif
57
58static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
59{
60 return alg->cra_ctxsize;
61}
62
63static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
64{
65 return alg->cra_ctxsize;
66}
67
68struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
69struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
70
71struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
72void crypto_larval_kill(struct crypto_alg *alg);
73void crypto_alg_tested(const char *name, int err);
74
75void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
76 struct crypto_alg *nalg);
77void crypto_remove_final(struct list_head *list);
78void crypto_shoot_alg(struct crypto_alg *alg);
79struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
80 u32 mask);
81void *crypto_create_tfm_node(struct crypto_alg *alg,
82 const struct crypto_type *frontend, int node);
83
84static inline void *crypto_create_tfm(struct crypto_alg *alg,
85 const struct crypto_type *frontend)
86{
87 return crypto_create_tfm_node(alg, frontend, NUMA_NO_NODE);
88}
89
90struct crypto_alg *crypto_find_alg(const char *alg_name,
91 const struct crypto_type *frontend,
92 u32 type, u32 mask);
93
94void *crypto_alloc_tfm_node(const char *alg_name,
95 const struct crypto_type *frontend, u32 type, u32 mask,
96 int node);
97
98static inline void *crypto_alloc_tfm(const char *alg_name,
99 const struct crypto_type *frontend, u32 type, u32 mask)
100{
101 return crypto_alloc_tfm_node(alg_name, frontend, type, mask, NUMA_NO_NODE);
102}
103
104int crypto_probing_notify(unsigned long val, void *v);
105
106unsigned int crypto_alg_extsize(struct crypto_alg *alg);
107
108int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
109 u32 type, u32 mask);
110
111static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
112{
113 refcount_inc(&alg->cra_refcnt);
114 return alg;
115}
116
117static inline void crypto_alg_put(struct crypto_alg *alg)
118{
119 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
120 alg->cra_destroy(alg);
121}
122
123static inline int crypto_tmpl_get(struct crypto_template *tmpl)
124{
125 return try_module_get(tmpl->module);
126}
127
128static inline void crypto_tmpl_put(struct crypto_template *tmpl)
129{
130 module_put(tmpl->module);
131}
132
133static inline int crypto_is_larval(struct crypto_alg *alg)
134{
135 return alg->cra_flags & CRYPTO_ALG_LARVAL;
136}
137
138static inline int crypto_is_dead(struct crypto_alg *alg)
139{
140 return alg->cra_flags & CRYPTO_ALG_DEAD;
141}
142
143static inline int crypto_is_moribund(struct crypto_alg *alg)
144{
145 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
146}
147
148static inline void crypto_notify(unsigned long val, void *v)
149{
150 blocking_notifier_call_chain(&crypto_chain, val, v);
151}
152
153static inline void crypto_yield(u32 flags)
154{
155 if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)
156 cond_resched();
157}
158
159#endif /* _CRYPTO_INTERNAL_H */
160