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authorHerbert Xu <herbert@gondor.apana.org.au>2015-04-21 10:46:40 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2015-04-22 09:30:16 +0800
commit881cd6c570af412c2fab278b0656f7597dc5ee74 (patch)
tree8086185484f8185be5cb365a45d35cf19d75d6dc
parent7ca99d814821e8a8ac6d7c48b2ccfc24bda27b1f (diff)
crypto: rng - Add multiple algorithm registration interface
This patch adds the helpers that allow the registration and removal of multiple RNG algorithms. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-rw-r--r--crypto/rng.c29
-rw-r--r--include/crypto/internal/rng.h2
2 files changed, 31 insertions, 0 deletions
diff --git a/crypto/rng.c b/crypto/rng.c
index 5e0425a24657..e98ce1ca527d 100644
--- a/crypto/rng.c
+++ b/crypto/rng.c
@@ -233,5 +233,34 @@ void crypto_unregister_rng(struct rng_alg *alg)
}
EXPORT_SYMBOL_GPL(crypto_unregister_rng);
+int crypto_register_rngs(struct rng_alg *algs, int count)
+{
+ int i, ret;
+
+ for (i = 0; i < count; i++) {
+ ret = crypto_register_rng(algs + i);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ for (--i; i >= 0; --i)
+ crypto_unregister_rng(algs + i);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_register_rngs);
+
+void crypto_unregister_rngs(struct rng_alg *algs, int count)
+{
+ int i;
+
+ for (i = count - 1; i >= 0; --i)
+ crypto_unregister_rng(algs + i);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_rngs);
+
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Random Number Generator");
diff --git a/include/crypto/internal/rng.h b/include/crypto/internal/rng.h
index 93d41bcc444e..2c9a865c66e2 100644
--- a/include/crypto/internal/rng.h
+++ b/include/crypto/internal/rng.h
@@ -20,6 +20,8 @@ extern const struct crypto_type crypto_rng_type;
int crypto_register_rng(struct rng_alg *alg);
void crypto_unregister_rng(struct rng_alg *alg);
+int crypto_register_rngs(struct rng_alg *algs, int count);
+void crypto_unregister_rngs(struct rng_alg *algs, int count);
static inline void *crypto_rng_ctx(struct crypto_rng *tfm)
{