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

[Dave Watson]

On 02/12/18 03:12 PM, Junaid Shahid wrote:
> 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.

Yes, these both sound reasonable.  I will send a V2.

Thanks!