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crypto: Add bulk algorithm registration interface 

Hardware crypto engines frequently need to register a selection of
different algorithms with the core. Simplify their code slightly,
especially the error handling, by providing functions to register a
number of algorithms in a single call.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Mark Brown 2012-01-17 23:34:26 +00:00 committed by Herbert Xu
parent b85a088f15
commit 4b004346fe
2 changed files with 37 additions and 0 deletions
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35
crypto/algapi.c
View File

@ -405,6 +405,41 @@ int crypto_unregister_alg(struct crypto_alg *alg)
}
EXPORT_SYMBOL_GPL(crypto_unregister_alg);
int crypto_register_algs(struct crypto_alg *algs, int count)
{
int i, ret;
for (i = 0; i < count; i++) {
ret = crypto_register_alg(&algs[i]);
if (ret)
goto err;
}
return 0;
err:
for (--i; i >= 0; --i)
crypto_unregister_alg(&algs[i]);
return ret;
}
EXPORT_SYMBOL_GPL(crypto_register_algs);
int crypto_unregister_algs(struct crypto_alg *algs, int count)
{
int i, ret;
for (i = 0; i < count; i++) {
ret = crypto_unregister_alg(&algs[i]);
if (ret)
pr_err("Failed to unregister %s %s: %d\n",
algs[i].cra_driver_name, algs[i].cra_name, ret);
}
return 0;
}
EXPORT_SYMBOL_GPL(crypto_unregister_algs);
int crypto_register_template(struct crypto_template *tmpl)
{
struct crypto_template *q;

2
include/linux/crypto.h
View File

@ -314,6 +314,8 @@ struct crypto_alg {
*/
int crypto_register_alg(struct crypto_alg *alg);
int crypto_unregister_alg(struct crypto_alg *alg);
int crypto_register_algs(struct crypto_alg *algs, int count);
int crypto_unregister_algs(struct crypto_alg *algs, int count);
/*
* Algorithm query interface.