Re: [PATCH 14/14] x86/crypto: aesni: Update aesni-intel_glue to use scatter/gather

[Junaid Shahid]

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.


Thanks,
Junaid