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crypto: add crypto_[un]register_shashes for [un]registering multiple shash entries at once 

Add crypto_[un]register_shashes() to allow simplifying init/exit code of shash
crypto modules that register multiple algorithms.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Jussi Kivilinna 2012-07-11 14:20:20 +03:00 committed by Herbert Xu
parent 8fc229a51b
commit 50fc3e8d2c
2 changed files with 38 additions and 0 deletions
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36
crypto/shash.c
View File

@ -629,6 +629,42 @@ int crypto_unregister_shash(struct shash_alg *alg)
}
EXPORT_SYMBOL_GPL(crypto_unregister_shash);
int crypto_register_shashes(struct shash_alg *algs, int count)
{
int i, ret;
for (i = 0; i < count; i++) {
ret = crypto_register_shash(&algs[i]);
if (ret)
goto err;
}
return 0;
err:
for (--i; i >= 0; --i)
crypto_unregister_shash(&algs[i]);
return ret;
}
EXPORT_SYMBOL_GPL(crypto_register_shashes);
int crypto_unregister_shashes(struct shash_alg *algs, int count)
{
int i, ret;
for (i = count - 1; i >= 0; --i) {
ret = crypto_unregister_shash(&algs[i]);
if (ret)
pr_err("Failed to unregister %s %s: %d\n",
algs[i].base.cra_driver_name,
algs[i].base.cra_name, ret);
}
return 0;
}
EXPORT_SYMBOL_GPL(crypto_unregister_shashes);
int shash_register_instance(struct crypto_template *tmpl,
struct shash_instance *inst)
{

2
include/crypto/internal/hash.h
View File

@ -83,6 +83,8 @@ struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
int crypto_register_shash(struct shash_alg *alg);
int crypto_unregister_shash(struct shash_alg *alg);
int crypto_register_shashes(struct shash_alg *algs, int count);
int crypto_unregister_shashes(struct shash_alg *algs, int count);
int shash_register_instance(struct crypto_template *tmpl,
struct shash_instance *inst);
void shash_free_instance(struct crypto_instance *inst);