Commit | Line | Data |
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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
3 | * Cryptographic API. | |
4 | * | |
5 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> | |
5cb1454b | 6 | * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au> |
1da177e4 LT |
7 | */ |
8 | #ifndef _CRYPTO_INTERNAL_H | |
9 | #define _CRYPTO_INTERNAL_H | |
cce9e06d HX |
10 | |
11 | #include <crypto/algapi.h> | |
2825982d | 12 | #include <linux/completion.h> |
ae131f49 | 13 | #include <linux/err.h> |
adad556e | 14 | #include <linux/jump_label.h> |
5cb1454b | 15 | #include <linux/list.h> |
4cc7720c | 16 | #include <linux/module.h> |
2825982d | 17 | #include <linux/notifier.h> |
1dbb920e HX |
18 | #include <linux/numa.h> |
19 | #include <linux/refcount.h> | |
5cb1454b | 20 | #include <linux/rwsem.h> |
1dbb920e HX |
21 | #include <linux/sched.h> |
22 | #include <linux/types.h> | |
ccb778e1 | 23 | |
4cc7720c HX |
24 | struct crypto_instance; |
25 | struct crypto_template; | |
26 | ||
2825982d HX |
27 | struct crypto_larval { |
28 | struct crypto_alg alg; | |
29 | struct crypto_alg *adult; | |
30 | struct completion completion; | |
492e2b63 | 31 | u32 mask; |
adad556e | 32 | bool test_started; |
2825982d HX |
33 | }; |
34 | ||
5163ab50 HX |
35 | enum { |
36 | CRYPTOA_UNSPEC, | |
37 | CRYPTOA_ALG, | |
38 | CRYPTOA_TYPE, | |
39 | __CRYPTOA_MAX, | |
40 | }; | |
41 | ||
42 | #define CRYPTOA_MAX (__CRYPTOA_MAX - 1) | |
43 | ||
44 | /* Maximum number of (rtattr) parameters for each template. */ | |
45 | #define CRYPTO_MAX_ATTRS 32 | |
46 | ||
5cb1454b HX |
47 | extern struct list_head crypto_alg_list; |
48 | extern struct rw_semaphore crypto_alg_sem; | |
2825982d | 49 | extern struct blocking_notifier_head crypto_chain; |
5cb1454b | 50 | |
01f727cd HX |
51 | int alg_test(const char *driver, const char *alg, u32 type, u32 mask); |
52 | ||
06bd9c96 EB |
53 | #ifdef CONFIG_CRYPTO_MANAGER_DISABLE_TESTS |
54 | static inline bool crypto_boot_test_finished(void) | |
55 | { | |
56 | return true; | |
57 | } | |
58 | static inline void set_crypto_boot_test_finished(void) | |
59 | { | |
60 | } | |
61 | #else | |
62 | DECLARE_STATIC_KEY_FALSE(__crypto_boot_test_finished); | |
63 | static inline bool crypto_boot_test_finished(void) | |
64 | { | |
65 | return static_branch_likely(&__crypto_boot_test_finished); | |
66 | } | |
67 | static inline void set_crypto_boot_test_finished(void) | |
68 | { | |
69 | static_branch_enable(&__crypto_boot_test_finished); | |
70 | } | |
71 | #endif /* !CONFIG_CRYPTO_MANAGER_DISABLE_TESTS */ | |
adad556e | 72 | |
1da177e4 LT |
73 | #ifdef CONFIG_PROC_FS |
74 | void __init crypto_init_proc(void); | |
cce9e06d | 75 | void __exit crypto_exit_proc(void); |
1da177e4 LT |
76 | #else |
77 | static inline void crypto_init_proc(void) | |
78 | { } | |
cce9e06d HX |
79 | static inline void crypto_exit_proc(void) |
80 | { } | |
1da177e4 LT |
81 | #endif |
82 | ||
f1ddcaf3 | 83 | static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg) |
fbdae9f3 | 84 | { |
f1ddcaf3 | 85 | return alg->cra_ctxsize; |
fbdae9f3 HX |
86 | } |
87 | ||
f1ddcaf3 | 88 | static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg) |
fbdae9f3 HX |
89 | { |
90 | return alg->cra_ctxsize; | |
91 | } | |
92 | ||
2825982d | 93 | struct crypto_alg *crypto_mod_get(struct crypto_alg *alg); |
492e2b63 | 94 | struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask); |
2825982d | 95 | |
73d3864a | 96 | struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask); |
b9c55aa4 | 97 | void crypto_larval_kill(struct crypto_alg *alg); |
adad556e | 98 | void crypto_wait_for_test(struct crypto_larval *larval); |
73d3864a | 99 | void crypto_alg_tested(const char *name, int err); |
2825982d | 100 | |
89b596ba SK |
101 | void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list, |
102 | struct crypto_alg *nalg); | |
22e5b20b | 103 | void crypto_remove_final(struct list_head *list); |
6603523b | 104 | void crypto_shoot_alg(struct crypto_alg *alg); |
27d2a330 HX |
105 | struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type, |
106 | u32 mask); | |
7bc13b5b BS |
107 | void *crypto_create_tfm_node(struct crypto_alg *alg, |
108 | const struct crypto_type *frontend, int node); | |
3c3a24cb HX |
109 | void *crypto_clone_tfm(const struct crypto_type *frontend, |
110 | struct crypto_tfm *otfm); | |
7bc13b5b BS |
111 | |
112 | static inline void *crypto_create_tfm(struct crypto_alg *alg, | |
113 | const struct crypto_type *frontend) | |
114 | { | |
115 | return crypto_create_tfm_node(alg, frontend, NUMA_NO_NODE); | |
116 | } | |
117 | ||
d06854f0 HX |
118 | struct crypto_alg *crypto_find_alg(const char *alg_name, |
119 | const struct crypto_type *frontend, | |
120 | u32 type, u32 mask); | |
7bc13b5b BS |
121 | |
122 | void *crypto_alloc_tfm_node(const char *alg_name, | |
123 | const struct crypto_type *frontend, u32 type, u32 mask, | |
124 | int node); | |
125 | ||
126 | static inline void *crypto_alloc_tfm(const char *alg_name, | |
127 | const struct crypto_type *frontend, u32 type, u32 mask) | |
128 | { | |
129 | return crypto_alloc_tfm_node(alg_name, frontend, type, mask, NUMA_NO_NODE); | |
130 | } | |
4cc7720c | 131 | |
73d3864a | 132 | int crypto_probing_notify(unsigned long val, void *v); |
2825982d | 133 | |
38d21433 HX |
134 | unsigned int crypto_alg_extsize(struct crypto_alg *alg); |
135 | ||
f2aefdab HX |
136 | int crypto_type_has_alg(const char *name, const struct crypto_type *frontend, |
137 | u32 type, u32 mask); | |
138 | ||
939e1779 HX |
139 | static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg) |
140 | { | |
ce8614a3 | 141 | refcount_inc(&alg->cra_refcnt); |
939e1779 HX |
142 | return alg; |
143 | } | |
144 | ||
6bfd4809 HX |
145 | static inline void crypto_alg_put(struct crypto_alg *alg) |
146 | { | |
ce8614a3 | 147 | if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy) |
6bfd4809 HX |
148 | alg->cra_destroy(alg); |
149 | } | |
150 | ||
4cc7720c HX |
151 | static inline int crypto_tmpl_get(struct crypto_template *tmpl) |
152 | { | |
153 | return try_module_get(tmpl->module); | |
154 | } | |
155 | ||
156 | static inline void crypto_tmpl_put(struct crypto_template *tmpl) | |
157 | { | |
158 | module_put(tmpl->module); | |
159 | } | |
160 | ||
2825982d HX |
161 | static inline int crypto_is_larval(struct crypto_alg *alg) |
162 | { | |
163 | return alg->cra_flags & CRYPTO_ALG_LARVAL; | |
164 | } | |
165 | ||
6bfd4809 HX |
166 | static inline int crypto_is_dead(struct crypto_alg *alg) |
167 | { | |
168 | return alg->cra_flags & CRYPTO_ALG_DEAD; | |
169 | } | |
170 | ||
171 | static inline int crypto_is_moribund(struct crypto_alg *alg) | |
172 | { | |
173 | return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING); | |
174 | } | |
175 | ||
73d3864a | 176 | static inline void crypto_notify(unsigned long val, void *v) |
2825982d | 177 | { |
73d3864a | 178 | blocking_notifier_call_chain(&crypto_chain, val, v); |
2825982d HX |
179 | } |
180 | ||
1dbb920e HX |
181 | static inline void crypto_yield(u32 flags) |
182 | { | |
183 | if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) | |
184 | cond_resched(); | |
185 | } | |
186 | ||
adad556e HX |
187 | static inline int crypto_is_test_larval(struct crypto_larval *larval) |
188 | { | |
189 | return larval->alg.cra_driver_name[0]; | |
190 | } | |
191 | ||
ae131f49 HX |
192 | static inline struct crypto_tfm *crypto_tfm_get(struct crypto_tfm *tfm) |
193 | { | |
194 | return refcount_inc_not_zero(&tfm->refcnt) ? tfm : ERR_PTR(-EOVERFLOW); | |
195 | } | |
196 | ||
1da177e4 LT |
197 | #endif /* _CRYPTO_INTERNAL_H */ |
198 |