crypto: add crypto_has_kpp()

Add helper function to determine if a given key-agreement protocol primitive is supported. Signed-off-by: Hannes Reinecke <[email protected]> Reviewed-by: Sagi Grimberg <[email protected]> Reviewed-by: Chaitanya Kulkarni <[email protected]> Reviewed-by: Himanshu Madhani <[email protected]> Acked-by: Herbert Xu <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
ambv · Aug 2, 2022 · 9e2f284 · 9e2f284
1 parent 85cc424
commit 9e2f284
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diff --git a/crypto/kpp.c b/crypto/kpp.c
@@ -104,6 +104,12 @@ int crypto_grab_kpp(struct crypto_kpp_spawn *spawn,
 }
 EXPORT_SYMBOL_GPL(crypto_grab_kpp);
 
+int crypto_has_kpp(const char *alg_name, u32 type, u32 mask)
+{
+	return crypto_type_has_alg(alg_name, &crypto_kpp_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_has_kpp);
+
 static void kpp_prepare_alg(struct kpp_alg *alg)
 {
 	struct crypto_alg *base = &alg->base;

diff --git a/include/crypto/kpp.h b/include/crypto/kpp.h
@@ -104,6 +104,8 @@ struct kpp_alg {
  */
 struct crypto_kpp *crypto_alloc_kpp(const char *alg_name, u32 type, u32 mask);
 
+int crypto_has_kpp(const char *alg_name, u32 type, u32 mask);
+
 static inline struct crypto_tfm *crypto_kpp_tfm(struct crypto_kpp *tfm)
 {
 	return &tfm->base;