crypto: aead - Add crypto_aead_maxauthsize

This patch adds the helper crypto_aead_maxauthsize to remove the
need to directly dereference aead_alg internals by AEAD implementors.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/include/crypto/internal/aead.h b/include/crypto/internal/aead.h
index 84c17bb..4614f79 100644 (file)
--- a/include/crypto/internal/aead.h
+++ b/include/crypto/internal/aead.h
@@ -119,5 +119,10 @@ static inline void crypto_aead_set_reqsize(struct crypto_aead *aead,
        crypto_aead_crt(aead)->reqsize = reqsize;
 }
 
+static inline unsigned int crypto_aead_maxauthsize(struct crypto_aead *aead)
+{
+       return crypto_old_aead_alg(aead)->maxauthsize;
+}
+
 #endif /* _CRYPTO_INTERNAL_AEAD_H */