LXR linux/crypto/internal.h

   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/mm.h>
  14#include <linux/highmem.h>
  15#include <linux/interrupt.h>
  16#include <linux/init.h>
  17#include <linux/list.h>
  18#include <linux/module.h>
  19#include <linux/kernel.h>
  20#include <linux/notifier.h>
  21#include <linux/rwsem.h>
  22#include <linux/slab.h>
  23
  24struct crypto_instance;
  25struct crypto_template;
  26
  27struct crypto_larval {
  28        struct crypto_alg alg;
  29        struct crypto_alg *adult;
  30        struct completion completion;
  31        u32 mask;
  32};
  33
  34extern struct list_head crypto_alg_list;
  35extern struct rw_semaphore crypto_alg_sem;
  36extern struct blocking_notifier_head crypto_chain;
  37
  38#ifdef CONFIG_PROC_FS
  39void __init crypto_init_proc(void);
  40void __exit crypto_exit_proc(void);
  41#else
  42static inline void crypto_init_proc(void)
  43{ }
  44static inline void crypto_exit_proc(void)
  45{ }
  46#endif
  47
  48static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
  49{
  50        return alg->cra_ctxsize;
  51}
  52
  53static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
  54{
  55        return alg->cra_ctxsize;
  56}
  57
  58struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
  59struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
  60
  61int crypto_init_cipher_ops(struct crypto_tfm *tfm);
  62int crypto_init_compress_ops(struct crypto_tfm *tfm);
  63
  64struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
  65void crypto_larval_kill(struct crypto_alg *alg);
  66void crypto_alg_tested(const char *name, int err);
  67
  68void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
  69                          struct crypto_alg *nalg);
  70void crypto_remove_final(struct list_head *list);
  71void crypto_shoot_alg(struct crypto_alg *alg);
  72struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
  73                                      u32 mask);
  74void *crypto_create_tfm(struct crypto_alg *alg,
  75                        const struct crypto_type *frontend);
  76struct crypto_alg *crypto_find_alg(const char *alg_name,
  77                                   const struct crypto_type *frontend,
  78                                   u32 type, u32 mask);
  79void *crypto_alloc_tfm(const char *alg_name,
  80                       const struct crypto_type *frontend, u32 type, u32 mask);
  81
  82int crypto_probing_notify(unsigned long val, void *v);
  83
  84unsigned int crypto_alg_extsize(struct crypto_alg *alg);
  85
  86int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
  87                        u32 type, u32 mask);
  88
  89static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
  90{
  91        refcount_inc(&alg->cra_refcnt);
  92        return alg;
  93}
  94
  95static inline void crypto_alg_put(struct crypto_alg *alg)
  96{
  97        if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
  98                alg->cra_destroy(alg);
  99}
 100
 101static inline int crypto_tmpl_get(struct crypto_template *tmpl)
 102{
 103        return try_module_get(tmpl->module);
 104}
 105
 106static inline void crypto_tmpl_put(struct crypto_template *tmpl)
 107{
 108        module_put(tmpl->module);
 109}
 110
 111static inline int crypto_is_larval(struct crypto_alg *alg)
 112{
 113        return alg->cra_flags & CRYPTO_ALG_LARVAL;
 114}
 115
 116static inline int crypto_is_dead(struct crypto_alg *alg)
 117{
 118        return alg->cra_flags & CRYPTO_ALG_DEAD;
 119}
 120
 121static inline int crypto_is_moribund(struct crypto_alg *alg)
 122{
 123        return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
 124}
 125
 126static inline void crypto_notify(unsigned long val, void *v)
 127{
 128        blocking_notifier_call_chain(&crypto_chain, val, v);
 129}
 130
 131#endif  /* _CRYPTO_INTERNAL_H */
 132
 133