1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
6 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
8 #ifndef _CRYPTO_INTERNAL_H
9 #define _CRYPTO_INTERNAL_H
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/sched.h>
22 #include <linux/types.h>
24 struct crypto_instance;
25 struct crypto_template;
27 struct crypto_larval {
28 struct crypto_alg alg;
29 struct crypto_alg *adult;
30 struct completion completion;
42 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
44 /* Maximum number of (rtattr) parameters for each template. */
45 #define CRYPTO_MAX_ATTRS 32
47 extern struct list_head crypto_alg_list;
48 extern struct rw_semaphore crypto_alg_sem;
49 extern struct blocking_notifier_head crypto_chain;
51 int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
53 #ifdef CONFIG_CRYPTO_MANAGER_DISABLE_TESTS
54 static inline bool crypto_boot_test_finished(void)
58 static inline void set_crypto_boot_test_finished(void)
62 DECLARE_STATIC_KEY_FALSE(__crypto_boot_test_finished);
63 static inline bool crypto_boot_test_finished(void)
65 return static_branch_likely(&__crypto_boot_test_finished);
67 static inline void set_crypto_boot_test_finished(void)
69 static_branch_enable(&__crypto_boot_test_finished);
71 #endif /* !CONFIG_CRYPTO_MANAGER_DISABLE_TESTS */
74 void __init crypto_init_proc(void);
75 void __exit crypto_exit_proc(void);
77 static inline void crypto_init_proc(void)
79 static inline void crypto_exit_proc(void)
83 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
85 return alg->cra_ctxsize;
88 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
90 return alg->cra_ctxsize;
93 struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
94 struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
96 struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
97 void crypto_larval_kill(struct crypto_alg *alg);
98 void crypto_wait_for_test(struct crypto_larval *larval);
99 void crypto_alg_tested(const char *name, int err);
101 void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
102 struct crypto_alg *nalg);
103 void crypto_remove_final(struct list_head *list);
104 void crypto_shoot_alg(struct crypto_alg *alg);
105 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
107 void *crypto_create_tfm_node(struct crypto_alg *alg,
108 const struct crypto_type *frontend, int node);
110 static inline void *crypto_create_tfm(struct crypto_alg *alg,
111 const struct crypto_type *frontend)
113 return crypto_create_tfm_node(alg, frontend, NUMA_NO_NODE);
116 struct crypto_alg *crypto_find_alg(const char *alg_name,
117 const struct crypto_type *frontend,
120 void *crypto_alloc_tfm_node(const char *alg_name,
121 const struct crypto_type *frontend, u32 type, u32 mask,
124 static inline void *crypto_alloc_tfm(const char *alg_name,
125 const struct crypto_type *frontend, u32 type, u32 mask)
127 return crypto_alloc_tfm_node(alg_name, frontend, type, mask, NUMA_NO_NODE);
130 int crypto_probing_notify(unsigned long val, void *v);
132 unsigned int crypto_alg_extsize(struct crypto_alg *alg);
134 int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
137 static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
139 refcount_inc(&alg->cra_refcnt);
143 static inline void crypto_alg_put(struct crypto_alg *alg)
145 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
146 alg->cra_destroy(alg);
149 static inline int crypto_tmpl_get(struct crypto_template *tmpl)
151 return try_module_get(tmpl->module);
154 static inline void crypto_tmpl_put(struct crypto_template *tmpl)
156 module_put(tmpl->module);
159 static inline int crypto_is_larval(struct crypto_alg *alg)
161 return alg->cra_flags & CRYPTO_ALG_LARVAL;
164 static inline int crypto_is_dead(struct crypto_alg *alg)
166 return alg->cra_flags & CRYPTO_ALG_DEAD;
169 static inline int crypto_is_moribund(struct crypto_alg *alg)
171 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
174 static inline void crypto_notify(unsigned long val, void *v)
176 blocking_notifier_call_chain(&crypto_chain, val, v);
179 static inline void crypto_yield(u32 flags)
181 if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)
185 static inline int crypto_is_test_larval(struct crypto_larval *larval)
187 return larval->alg.cra_driver_name[0];
190 static inline struct crypto_tfm *crypto_tfm_get(struct crypto_tfm *tfm)
192 return refcount_inc_not_zero(&tfm->refcnt) ? tfm : ERR_PTR(-EOVERFLOW);
195 #endif /* _CRYPTO_INTERNAL_H */