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crypto: api - add a helper to (un)register a array of templates 

This patch add a helper to (un)register a array of templates. The
following patches will use this helper to simplify the code.

Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Xiongfeng Wang 2019-01-18 13:58:11 +08:00 committed by Herbert Xu
parent 747bd2a36c
commit 9572442dcf
2 changed files with 29 additions and 0 deletions
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27
crypto/algapi.c
View File

@ -494,6 +494,24 @@ out:
}
EXPORT_SYMBOL_GPL(crypto_register_template);
int crypto_register_templates(struct crypto_template *tmpls, int count)
{
int i, err;
for (i = 0; i < count; i++) {
err = crypto_register_template(&tmpls[i]);
if (err)
goto out;
}
return 0;
out:
for (--i; i >= 0; --i)
crypto_unregister_template(&tmpls[i]);
return err;
}
EXPORT_SYMBOL_GPL(crypto_register_templates);
void crypto_unregister_template(struct crypto_template *tmpl)
{
struct crypto_instance *inst;
@ -523,6 +541,15 @@ void crypto_unregister_template(struct crypto_template *tmpl)
}
EXPORT_SYMBOL_GPL(crypto_unregister_template);
void crypto_unregister_templates(struct crypto_template *tmpls, int count)
{
int i;
for (i = count - 1; i >= 0; --i)
crypto_unregister_template(&tmpls[i]);
}
EXPORT_SYMBOL_GPL(crypto_unregister_templates);
static struct crypto_template *__crypto_lookup_template(const char *name)
{
struct crypto_template *q, *tmpl = NULL;

2
include/crypto/algapi.h
View File

@ -143,7 +143,9 @@ extern const struct crypto_type crypto_blkcipher_type;
void crypto_mod_put(struct crypto_alg *alg);
int crypto_register_template(struct crypto_template *tmpl);
int crypto_register_templates(struct crypto_template *tmpls, int count);
void crypto_unregister_template(struct crypto_template *tmpl);
void crypto_unregister_templates(struct crypto_template *tmpls, int count);
struct crypto_template *crypto_lookup_template(const char *name);
int crypto_register_instance(struct crypto_template *tmpl,