crypto: shash - Add __crypto_shash_cast
This patch adds __crypto_shash_cast which turns a crypto_tfm
into crypto_shash. It's analogous to the other __crypto_*_cast
functions.
It hasn't been needed until now since no existing shash algorithms
have had an init function.
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
---
include/crypto/internal/hash.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
index f104114..3af34ca 100644
--- a/include/crypto/internal/hash.h
+++ b/include/crypto/internal/hash.h
@@ -128,5 +128,10 @@ static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
return crypto_tfm_ctx_aligned(&tfm->base);
}
+static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
+{
+ return (struct crypto_shash *)tfm;
+}
+
#endif /* _CRYPTO_INTERNAL_HASH_H */
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