crypto: aead - Add chunk size
This patch adds a chunk size parameter to aead algorithms, just
like the chunk size for skcipher algorithms.
However, unlike skcipher we do not currently export this to AEAD
users. It is only meant to be used by AEAD implementors for now.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/aead.c b/crypto/aead.c
index 9b18a1e..b155cbc 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -346,9 +346,13 @@
{
struct crypto_alg *base = &alg->base;
- if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8)
+ if (max3(alg->maxauthsize, alg->ivsize, alg->chunksize) >
+ PAGE_SIZE / 8)
return -EINVAL;
+ if (!alg->chunksize)
+ alg->chunksize = base->cra_blocksize;
+
base->cra_type = &crypto_aead_type;
base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
base->cra_flags |= CRYPTO_ALG_TYPE_AEAD;