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SubjectRe: [PATCH 14/14] x86/crypto: aesni: Update aesni-intel_glue to use scatter/gather
Hi Dave,

On 02/12/2018 11:51 AM, Dave Watson wrote:

> +static int gcmaes_encrypt_sg(struct aead_request *req, unsigned int assoclen,
> + u8 *hash_subkey, u8 *iv, void *aes_ctx)
> +static int gcmaes_decrypt_sg(struct aead_request *req, unsigned int assoclen,
> + u8 *hash_subkey, u8 *iv, void *aes_ctx)

These two functions are almost identical. Wouldn't it be better to combine them into a single encrypt/decrypt function, similar to what you have done for the assembly macros?

> + if (((struct crypto_aes_ctx *)aes_ctx)->key_length != AES_KEYSIZE_128 ||
> + aesni_gcm_enc_tfm == aesni_gcm_enc) {

Shouldn't we also include a check for the buffer length being less than AVX_GEN2_OPTSIZE? AVX will not be used in that case either.


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