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> |
5cb1454b | 13 | #include <linux/list.h> |
4cc7720c | 14 | #include <linux/module.h> |
2825982d | 15 | #include <linux/notifier.h> |
1dbb920e HX |
16 | #include <linux/numa.h> |
17 | #include <linux/refcount.h> | |
5cb1454b | 18 | #include <linux/rwsem.h> |
1dbb920e HX |
19 | #include <linux/sched.h> |
20 | #include <linux/types.h> | |
ccb778e1 | 21 | |
4cc7720c HX |
22 | struct crypto_instance; |
23 | struct crypto_template; | |
24 | ||
2825982d HX |
25 | struct crypto_larval { |
26 | struct crypto_alg alg; | |
27 | struct crypto_alg *adult; | |
28 | struct completion completion; | |
492e2b63 | 29 | u32 mask; |
2825982d HX |
30 | }; |
31 | ||
5163ab50 HX |
32 | enum { |
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 | ||
5cb1454b HX |
44 | extern struct list_head crypto_alg_list; |
45 | extern struct rw_semaphore crypto_alg_sem; | |
2825982d | 46 | extern struct blocking_notifier_head crypto_chain; |
5cb1454b | 47 | |
1da177e4 LT |
48 | #ifdef CONFIG_PROC_FS |
49 | void __init crypto_init_proc(void); | |
cce9e06d | 50 | void __exit crypto_exit_proc(void); |
1da177e4 LT |
51 | #else |
52 | static inline void crypto_init_proc(void) | |
53 | { } | |
cce9e06d HX |
54 | static inline void crypto_exit_proc(void) |
55 | { } | |
1da177e4 LT |
56 | #endif |
57 | ||
f1ddcaf3 | 58 | static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg) |
fbdae9f3 | 59 | { |
f1ddcaf3 | 60 | return alg->cra_ctxsize; |
fbdae9f3 HX |
61 | } |
62 | ||
f1ddcaf3 | 63 | static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg) |
fbdae9f3 HX |
64 | { |
65 | return alg->cra_ctxsize; | |
66 | } | |
67 | ||
2825982d | 68 | struct crypto_alg *crypto_mod_get(struct crypto_alg *alg); |
492e2b63 | 69 | struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask); |
2825982d | 70 | |
73d3864a | 71 | struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask); |
b9c55aa4 | 72 | void crypto_larval_kill(struct crypto_alg *alg); |
73d3864a | 73 | void crypto_alg_tested(const char *name, int err); |
2825982d | 74 | |
89b596ba SK |
75 | void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list, |
76 | struct crypto_alg *nalg); | |
22e5b20b | 77 | void crypto_remove_final(struct list_head *list); |
6603523b | 78 | void crypto_shoot_alg(struct crypto_alg *alg); |
27d2a330 HX |
79 | struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type, |
80 | u32 mask); | |
7bc13b5b BS |
81 | void *crypto_create_tfm_node(struct crypto_alg *alg, |
82 | const struct crypto_type *frontend, int node); | |
83 | ||
84 | static 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 | ||
d06854f0 HX |
90 | struct crypto_alg *crypto_find_alg(const char *alg_name, |
91 | const struct crypto_type *frontend, | |
92 | u32 type, u32 mask); | |
7bc13b5b BS |
93 | |
94 | void *crypto_alloc_tfm_node(const char *alg_name, | |
95 | const struct crypto_type *frontend, u32 type, u32 mask, | |
96 | int node); | |
97 | ||
98 | static 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 | } | |
4cc7720c | 103 | |
73d3864a | 104 | int crypto_probing_notify(unsigned long val, void *v); |
2825982d | 105 | |
38d21433 HX |
106 | unsigned int crypto_alg_extsize(struct crypto_alg *alg); |
107 | ||
f2aefdab HX |
108 | int crypto_type_has_alg(const char *name, const struct crypto_type *frontend, |
109 | u32 type, u32 mask); | |
110 | ||
939e1779 HX |
111 | static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg) |
112 | { | |
ce8614a3 | 113 | refcount_inc(&alg->cra_refcnt); |
939e1779 HX |
114 | return alg; |
115 | } | |
116 | ||
6bfd4809 HX |
117 | static inline void crypto_alg_put(struct crypto_alg *alg) |
118 | { | |
ce8614a3 | 119 | if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy) |
6bfd4809 HX |
120 | alg->cra_destroy(alg); |
121 | } | |
122 | ||
4cc7720c HX |
123 | static inline int crypto_tmpl_get(struct crypto_template *tmpl) |
124 | { | |
125 | return try_module_get(tmpl->module); | |
126 | } | |
127 | ||
128 | static inline void crypto_tmpl_put(struct crypto_template *tmpl) | |
129 | { | |
130 | module_put(tmpl->module); | |
131 | } | |
132 | ||
2825982d HX |
133 | static inline int crypto_is_larval(struct crypto_alg *alg) |
134 | { | |
135 | return alg->cra_flags & CRYPTO_ALG_LARVAL; | |
136 | } | |
137 | ||
6bfd4809 HX |
138 | static inline int crypto_is_dead(struct crypto_alg *alg) |
139 | { | |
140 | return alg->cra_flags & CRYPTO_ALG_DEAD; | |
141 | } | |
142 | ||
143 | static inline int crypto_is_moribund(struct crypto_alg *alg) | |
144 | { | |
145 | return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING); | |
146 | } | |
147 | ||
73d3864a | 148 | static inline void crypto_notify(unsigned long val, void *v) |
2825982d | 149 | { |
73d3864a | 150 | blocking_notifier_call_chain(&crypto_chain, val, v); |
2825982d HX |
151 | } |
152 | ||
1dbb920e HX |
153 | static inline void crypto_yield(u32 flags) |
154 | { | |
155 | if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) | |
156 | cond_resched(); | |
157 | } | |
158 | ||
1da177e4 LT |
159 | #endif /* _CRYPTO_INTERNAL_H */ |
160 |