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