FreeBSD/Linux Kernel Cross Reference
sys/crypto/internal.h

     /*
      * Cryptographic API.
      *
      * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
      * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
      *
      * This program is free software; you can redistribute it and/or modify it
      * under the terms of the GNU General Public License as published by the Free
      * Software Foundation; either version 2 of the License, or (at your option)
     * any later version.
     *
     */
    #ifndef _CRYPTO_INTERNAL_H
    #define _CRYPTO_INTERNAL_H
    
    #include <crypto/algapi.h>
    #include <linux/completion.h>
    #include <linux/mm.h>
    #include <linux/highmem.h>
    #include <linux/interrupt.h>
    #include <linux/init.h>
    #include <linux/list.h>
    #include <linux/module.h>
    #include <linux/kernel.h>
    #include <linux/notifier.h>
    #include <linux/rwsem.h>
    #include <linux/slab.h>
    #include <linux/fips.h>
    
    /* Crypto notification events. */
    enum {
            CRYPTO_MSG_ALG_REQUEST,
            CRYPTO_MSG_ALG_REGISTER,
            CRYPTO_MSG_ALG_UNREGISTER,
            CRYPTO_MSG_TMPL_REGISTER,
            CRYPTO_MSG_TMPL_UNREGISTER,
    };
    
    struct crypto_instance;
    struct crypto_template;
    
    struct crypto_larval {
            struct crypto_alg alg;
            struct crypto_alg *adult;
            struct completion completion;
            u32 mask;
    };
    
    extern struct list_head crypto_alg_list;
    extern struct rw_semaphore crypto_alg_sem;
    extern struct blocking_notifier_head crypto_chain;
    
    #ifdef CONFIG_PROC_FS
    void __init crypto_init_proc(void);
    void __exit crypto_exit_proc(void);
    #else
    static inline void crypto_init_proc(void)
    { }
    static inline void crypto_exit_proc(void)
    { }
    #endif
    
    static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
    {
            return alg->cra_ctxsize;
    }
    
    static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
    {
            return alg->cra_ctxsize;
    }
    
    struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
    struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
    struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
    
    int crypto_init_cipher_ops(struct crypto_tfm *tfm);
    int crypto_init_compress_ops(struct crypto_tfm *tfm);
    
    void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
    void crypto_exit_compress_ops(struct crypto_tfm *tfm);
    
    struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
    void crypto_larval_kill(struct crypto_alg *alg);
    struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
    void crypto_alg_tested(const char *name, int err);
    
    void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
                              struct crypto_alg *nalg);
    void crypto_remove_final(struct list_head *list);
    void crypto_shoot_alg(struct crypto_alg *alg);
    struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
                                          u32 mask);
    void *crypto_create_tfm(struct crypto_alg *alg,
                            const struct crypto_type *frontend);
    struct crypto_alg *crypto_find_alg(const char *alg_name,
                                       const struct crypto_type *frontend,
                                       u32 type, u32 mask);
    void *crypto_alloc_tfm(const char *alg_name,
                          const struct crypto_type *frontend, u32 type, u32 mask);
   
   int crypto_register_notifier(struct notifier_block *nb);
   int crypto_unregister_notifier(struct notifier_block *nb);
   int crypto_probing_notify(unsigned long val, void *v);
   
   static inline void crypto_alg_put(struct crypto_alg *alg)
   {
           if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
                   alg->cra_destroy(alg);
   }
   
   static inline int crypto_tmpl_get(struct crypto_template *tmpl)
   {
           return try_module_get(tmpl->module);
   }
   
   static inline void crypto_tmpl_put(struct crypto_template *tmpl)
   {
           module_put(tmpl->module);
   }
   
   static inline int crypto_is_larval(struct crypto_alg *alg)
   {
           return alg->cra_flags & CRYPTO_ALG_LARVAL;
   }
   
   static inline int crypto_is_dead(struct crypto_alg *alg)
   {
           return alg->cra_flags & CRYPTO_ALG_DEAD;
   }
   
   static inline int crypto_is_moribund(struct crypto_alg *alg)
   {
           return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
   }
   
   static inline void crypto_notify(unsigned long val, void *v)
   {
           blocking_notifier_call_chain(&crypto_chain, val, v);
   }
   
   #endif  /* _CRYPTO_INTERNAL_H */
   

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