Subversion Repositories test_project

/*

 * 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 <asm/kmap_types.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;

static inline enum km_type crypto_kmap_type(int out)

{

        enum km_type type;

        if (in_softirq())

                type = out * (KM_SOFTIRQ1 - KM_SOFTIRQ0) + KM_SOFTIRQ0;

        else

                type = out * (KM_USER1 - KM_USER0) + KM_USER0;

        return type;

}

static inline void *crypto_kmap(struct page *page, int out)

{

        return kmap_atomic(page, crypto_kmap_type(out));

}

static inline void crypto_kunmap(void *vaddr, int out)

{

        kunmap_atomic(vaddr, crypto_kmap_type(out));

}

static inline void crypto_yield(u32 flags)

{

        if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)

                cond_resched();

}

#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_digest_ctxsize(struct crypto_alg *alg)

{

        unsigned int len = alg->cra_ctxsize;

        if (alg->cra_alignmask) {

                len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);

                len += alg->cra_digest.dia_digestsize;

        }

        return len;

}

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_digest_ops(struct crypto_tfm *tfm);

int crypto_init_cipher_ops(struct crypto_tfm *tfm);

int crypto_init_compress_ops(struct crypto_tfm *tfm);

void crypto_exit_digest_ops(struct crypto_tfm *tfm);

void crypto_exit_cipher_ops(struct crypto_tfm *tfm);

void crypto_exit_compress_ops(struct crypto_tfm *tfm);

void crypto_larval_error(const char *name, u32 type, u32 mask);

void crypto_shoot_alg(struct crypto_alg *alg);

struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,

                                      u32 mask);

int crypto_register_instance(struct crypto_template *tmpl,

                             struct crypto_instance *inst);

int crypto_register_notifier(struct notifier_block *nb);

int crypto_unregister_notifier(struct notifier_block *nb);

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 int crypto_notify(unsigned long val, void *v)

{

        return blocking_notifier_call_chain(&crypto_chain, val, v);

}

#endif  /* _CRYPTO_INTERNAL_H */