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alistair23-linux
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[CRYPTO] api: Allow multiple frontends per backend 

This patch adds support for multiple frontend types for each backend
algorithm by passing the type and mask through to the backend type
init function.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
hifive-unleashed-5.1
Herbert Xu 2007-01-24 20:50:26 +11:00
parent 2e306ee016
commit 27d2a33007
6 changed files with 24 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
crypto/algapi.c
View File

@ -401,7 +401,7 @@ struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
if (unlikely((alg->cra_flags ^ type) & mask))
goto out_put_alg;
tfm = __crypto_alloc_tfm(alg);
tfm = __crypto_alloc_tfm(alg, type, mask);
if (IS_ERR(tfm))
goto out_put_alg;

25
crypto/api.c
View File

@ -212,12 +212,12 @@ struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask)
}
EXPORT_SYMBOL_GPL(crypto_alg_mod_lookup);
static int crypto_init_ops(struct crypto_tfm *tfm)
static int crypto_init_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
{
const struct crypto_type *type = tfm->__crt_alg->cra_type;
const struct crypto_type *type_obj = tfm->__crt_alg->cra_type;
if (type)
return type->init(tfm);
if (type_obj)
return type_obj->init(tfm, type, mask);
switch (crypto_tfm_alg_type(tfm)) {
case CRYPTO_ALG_TYPE_CIPHER:
@ -266,14 +266,14 @@ static void crypto_exit_ops(struct crypto_tfm *tfm)
}
}
static unsigned int crypto_ctxsize(struct crypto_alg *alg)
static unsigned int crypto_ctxsize(struct crypto_alg *alg, u32 type, u32 mask)
{
const struct crypto_type *type = alg->cra_type;
const struct crypto_type *type_obj = alg->cra_type;
unsigned int len;
len = alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1);
if (type)
return len + type->ctxsize(alg);
if (type_obj)
return len + type_obj->ctxsize(alg, type, mask);
switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
default:
@ -303,20 +303,21 @@ void crypto_shoot_alg(struct crypto_alg *alg)
}
EXPORT_SYMBOL_GPL(crypto_shoot_alg);
struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg)
struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
u32 mask)
{
struct crypto_tfm *tfm = NULL;
unsigned int tfm_size;
int err = -ENOMEM;
tfm_size = sizeof(*tfm) + crypto_ctxsize(alg);
tfm_size = sizeof(*tfm) + crypto_ctxsize(alg, type, mask);
tfm = kzalloc(tfm_size, GFP_KERNEL);
if (tfm == NULL)
goto out_err;
tfm->__crt_alg = alg;
err = crypto_init_ops(tfm);
err = crypto_init_ops(tfm, type, mask);
if (err)
goto out_free_tfm;
@ -372,7 +373,7 @@ struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask)
goto err;
}
tfm = __crypto_alloc_tfm(alg);
tfm = __crypto_alloc_tfm(alg, type, mask);
if (!IS_ERR(tfm))
return tfm;

5
crypto/blkcipher.c
View File

@ -349,7 +349,8 @@ static int setkey(struct crypto_tfm *tfm, const u8 *key,
return cipher->setkey(tfm, key, keylen);
}
static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg)
static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg, u32 type,
u32 mask)
{
struct blkcipher_alg *cipher = &alg->cra_blkcipher;
unsigned int len = alg->cra_ctxsize;
@ -362,7 +363,7 @@ static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg)
return len;
}
static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm)
static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
{
struct blkcipher_tfm *crt = &tfm->crt_blkcipher;
struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;

5
crypto/hash.c
View File

@ -16,12 +16,13 @@
#include "internal.h"
static unsigned int crypto_hash_ctxsize(struct crypto_alg *alg)
static unsigned int crypto_hash_ctxsize(struct crypto_alg *alg, u32 type,
u32 mask)
{
return alg->cra_ctxsize;
}
static int crypto_init_hash_ops(struct crypto_tfm *tfm)
static int crypto_init_hash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
{
struct hash_tfm *crt = &tfm->crt_hash;
struct hash_alg *alg = &tfm->__crt_alg->cra_hash;

3
crypto/internal.h
View File

@ -120,7 +120,8 @@ 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);
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);

4
include/crypto/algapi.h
View File

@ -18,8 +18,8 @@ struct module;
struct seq_file;
struct crypto_type {
unsigned int (*ctxsize)(struct crypto_alg *alg);
int (*init)(struct crypto_tfm *tfm);
unsigned int (*ctxsize)(struct crypto_alg *alg, u32 type, u32 mask);
int (*init)(struct crypto_tfm *tfm, u32 type, u32 mask);
void (*exit)(struct crypto_tfm *tfm);
void (*show)(struct seq_file *m, struct crypto_alg *alg);
};