forked from Minki/linux
fbdae9f3e7
This patch ensures that cit_iv is aligned according to cra_alignmask by allocating it as part of the tfm structure. As a side effect the crypto layer will also guarantee that the tfm ctx area has enough space to be aligned by cra_alignmask. This allows us to remove the extra space reservation from the Padlock driver. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
106 lines
2.5 KiB
C
106 lines
2.5 KiB
C
/*
|
|
* Cryptographic API.
|
|
*
|
|
* Copyright (c) 2002 James Morris <jmorris@intercode.com.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 <linux/crypto.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/highmem.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <asm/kmap_types.h>
|
|
|
|
extern enum km_type crypto_km_types[];
|
|
|
|
static inline enum km_type crypto_kmap_type(int out)
|
|
{
|
|
return crypto_km_types[(in_softirq() ? 2 : 0) + out];
|
|
}
|
|
|
|
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(struct crypto_tfm *tfm)
|
|
{
|
|
if (!in_atomic())
|
|
cond_resched();
|
|
}
|
|
|
|
#ifdef CONFIG_CRYPTO_HMAC
|
|
int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
|
|
void crypto_free_hmac_block(struct crypto_tfm *tfm);
|
|
#else
|
|
static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
|
|
{ }
|
|
#endif
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
void __init crypto_init_proc(void);
|
|
#else
|
|
static inline void crypto_init_proc(void)
|
|
{ }
|
|
#endif
|
|
|
|
static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg,
|
|
int flags)
|
|
{
|
|
return alg->cra_ctxsize;
|
|
}
|
|
|
|
static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg,
|
|
int flags)
|
|
{
|
|
unsigned int len = alg->cra_ctxsize;
|
|
|
|
switch (flags & CRYPTO_TFM_MODE_MASK) {
|
|
case CRYPTO_TFM_MODE_CBC:
|
|
len = ALIGN(len, alg->cra_alignmask + 1);
|
|
len += alg->cra_blocksize;
|
|
break;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg,
|
|
int flags)
|
|
{
|
|
return alg->cra_ctxsize;
|
|
}
|
|
|
|
int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
|
|
int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
|
|
int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
|
|
|
|
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);
|
|
|
|
#endif /* _CRYPTO_INTERNAL_H */
|
|
|