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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/err.h>
14#include <linux/jump_label.h>
15#include <linux/list.h>
16#include <linux/module.h>
17#include <linux/notifier.h>
18#include <linux/numa.h>
19#include <linux/refcount.h>
20#include <linux/rwsem.h>
21#include <linux/scatterlist.h>
22#include <linux/sched.h>
23#include <linux/types.h>
24
25struct crypto_instance;
26struct crypto_template;
27
28struct crypto_larval {
29 struct crypto_alg alg;
30 struct crypto_alg *adult;
31 struct completion completion;
32 u32 mask;
33 bool test_started;
34};
35
36enum {
37 CRYPTOA_UNSPEC,
38 CRYPTOA_ALG,
39 CRYPTOA_TYPE,
40 __CRYPTOA_MAX,
41};
42
43#define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
44
45/* Maximum number of (rtattr) parameters for each template. */
46#define CRYPTO_MAX_ATTRS 32
47
48extern struct list_head crypto_alg_list;
49extern struct rw_semaphore crypto_alg_sem;
50extern struct blocking_notifier_head crypto_chain;
51
52int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
53
54#if !IS_BUILTIN(CONFIG_CRYPTO_ALGAPI) || \
55 IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS)
56static inline bool crypto_boot_test_finished(void)
57{
58 return true;
59}
60static inline void set_crypto_boot_test_finished(void)
61{
62}
63#else
64DECLARE_STATIC_KEY_FALSE(__crypto_boot_test_finished);
65static inline bool crypto_boot_test_finished(void)
66{
67 return static_branch_likely(&__crypto_boot_test_finished);
68}
69static inline void set_crypto_boot_test_finished(void)
70{
71 static_branch_enable(&__crypto_boot_test_finished);
72}
73#endif /* !IS_BUILTIN(CONFIG_CRYPTO_ALGAPI) ||
74 * IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS)
75 */
76
77#ifdef CONFIG_PROC_FS
78void __init crypto_init_proc(void);
79void __exit crypto_exit_proc(void);
80#else
81static inline void crypto_init_proc(void)
82{ }
83static inline void crypto_exit_proc(void)
84{ }
85#endif
86
87static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
88{
89 return alg->cra_ctxsize;
90}
91
92static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
93{
94 return alg->cra_ctxsize;
95}
96
97struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
98struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
99
100struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
101void crypto_schedule_test(struct crypto_larval *larval);
102void crypto_alg_tested(const char *name, int err);
103
104void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
105 struct crypto_alg *nalg);
106void crypto_remove_final(struct list_head *list);
107void crypto_shoot_alg(struct crypto_alg *alg);
108struct crypto_tfm *__crypto_alloc_tfmgfp(struct crypto_alg *alg, u32 type,
109 u32 mask, gfp_t gfp);
110struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
111 u32 mask);
112void *crypto_create_tfm_node(struct crypto_alg *alg,
113 const struct crypto_type *frontend, int node);
114void *crypto_clone_tfm(const struct crypto_type *frontend,
115 struct crypto_tfm *otfm);
116
117static inline void *crypto_create_tfm(struct crypto_alg *alg,
118 const struct crypto_type *frontend)
119{
120 return crypto_create_tfm_node(alg, frontend, NUMA_NO_NODE);
121}
122
123struct crypto_alg *crypto_find_alg(const char *alg_name,
124 const struct crypto_type *frontend,
125 u32 type, u32 mask);
126
127void *crypto_alloc_tfm_node(const char *alg_name,
128 const struct crypto_type *frontend, u32 type, u32 mask,
129 int node);
130
131static inline void *crypto_alloc_tfm(const char *alg_name,
132 const struct crypto_type *frontend, u32 type, u32 mask)
133{
134 return crypto_alloc_tfm_node(alg_name, frontend, type, mask, NUMA_NO_NODE);
135}
136
137int crypto_probing_notify(unsigned long val, void *v);
138
139unsigned int crypto_alg_extsize(struct crypto_alg *alg);
140
141int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
142 u32 type, u32 mask);
143
144static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
145{
146 refcount_inc(&alg->cra_refcnt);
147 return alg;
148}
149
150static inline void crypto_alg_put(struct crypto_alg *alg)
151{
152 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
153 alg->cra_destroy(alg);
154}
155
156static inline int crypto_tmpl_get(struct crypto_template *tmpl)
157{
158 return try_module_get(tmpl->module);
159}
160
161static inline void crypto_tmpl_put(struct crypto_template *tmpl)
162{
163 module_put(tmpl->module);
164}
165
166static inline int crypto_is_larval(struct crypto_alg *alg)
167{
168 return alg->cra_flags & CRYPTO_ALG_LARVAL;
169}
170
171static inline int crypto_is_dead(struct crypto_alg *alg)
172{
173 return alg->cra_flags & CRYPTO_ALG_DEAD;
174}
175
176static inline int crypto_is_moribund(struct crypto_alg *alg)
177{
178 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
179}
180
181static inline void crypto_notify(unsigned long val, void *v)
182{
183 blocking_notifier_call_chain(&crypto_chain, val, v);
184}
185
186static inline void crypto_yield(u32 flags)
187{
188 if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)
189 cond_resched();
190}
191
192static inline int crypto_is_test_larval(struct crypto_larval *larval)
193{
194 return larval->alg.cra_driver_name[0];
195}
196
197static inline struct crypto_tfm *crypto_tfm_get(struct crypto_tfm *tfm)
198{
199 return refcount_inc_not_zero(&tfm->refcnt) ? tfm : ERR_PTR(-EOVERFLOW);
200}
201
202#endif /* _CRYPTO_INTERNAL_H */
203
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};
34
35struct crypto_instance;
36struct crypto_template;
37
38struct crypto_larval {
39 struct crypto_alg alg;
40 struct crypto_alg *adult;
41 struct completion completion;
42 u32 mask;
43};
44
45extern struct list_head crypto_alg_list;
46extern struct rw_semaphore crypto_alg_sem;
47extern struct blocking_notifier_head crypto_chain;
48
49#ifdef CONFIG_PROC_FS
50void __init crypto_init_proc(void);
51void __exit crypto_exit_proc(void);
52#else
53static inline void crypto_init_proc(void)
54{ }
55static inline void crypto_exit_proc(void)
56{ }
57#endif
58
59static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
60{
61 return alg->cra_ctxsize;
62}
63
64static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
65{
66 return alg->cra_ctxsize;
67}
68
69struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
70struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
71
72int crypto_init_cipher_ops(struct crypto_tfm *tfm);
73int crypto_init_compress_ops(struct crypto_tfm *tfm);
74
75struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
76void crypto_larval_kill(struct crypto_alg *alg);
77void crypto_alg_tested(const char *name, int err);
78
79void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
80 struct crypto_alg *nalg);
81void crypto_remove_final(struct list_head *list);
82void crypto_shoot_alg(struct crypto_alg *alg);
83struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
84 u32 mask);
85void *crypto_create_tfm(struct crypto_alg *alg,
86 const struct crypto_type *frontend);
87struct crypto_alg *crypto_find_alg(const char *alg_name,
88 const struct crypto_type *frontend,
89 u32 type, u32 mask);
90void *crypto_alloc_tfm(const char *alg_name,
91 const struct crypto_type *frontend, u32 type, u32 mask);
92
93int crypto_register_notifier(struct notifier_block *nb);
94int crypto_unregister_notifier(struct notifier_block *nb);
95int crypto_probing_notify(unsigned long val, void *v);
96
97unsigned int crypto_alg_extsize(struct crypto_alg *alg);
98
99int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
100 u32 type, u32 mask);
101
102static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
103{
104 refcount_inc(&alg->cra_refcnt);
105 return alg;
106}
107
108static inline void crypto_alg_put(struct crypto_alg *alg)
109{
110 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
111 alg->cra_destroy(alg);
112}
113
114static inline int crypto_tmpl_get(struct crypto_template *tmpl)
115{
116 return try_module_get(tmpl->module);
117}
118
119static inline void crypto_tmpl_put(struct crypto_template *tmpl)
120{
121 module_put(tmpl->module);
122}
123
124static inline int crypto_is_larval(struct crypto_alg *alg)
125{
126 return alg->cra_flags & CRYPTO_ALG_LARVAL;
127}
128
129static inline int crypto_is_dead(struct crypto_alg *alg)
130{
131 return alg->cra_flags & CRYPTO_ALG_DEAD;
132}
133
134static inline int crypto_is_moribund(struct crypto_alg *alg)
135{
136 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
137}
138
139static inline void crypto_notify(unsigned long val, void *v)
140{
141 blocking_notifier_call_chain(&crypto_chain, val, v);
142}
143
144#endif /* _CRYPTO_INTERNAL_H */
145