From 881cd6c570af412c2fab278b0656f7597dc5ee74 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 21 Apr 2015 10:46:40 +0800 Subject: [PATCH] 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 --- crypto/rng.c | 29 +++++++++++++++++++++++++++++ include/crypto/internal/rng.h | 2 ++ 2 files changed, 31 insertions(+) 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) { -- 2.20.1