[EXT] [PATCH 16/40] cryptodev: move dh type from xform to dh op

[Akhil Goyal]

> - Moved dh operation type to dh operation struct.
> Operation type (PUBLIC_KEY_GENERATION, SHARED_SECRET) should
> be free to choose for any operation. One xform/session should
> be enough to perform both DH operations, if op_type would be xform
> member, session would have to be to be created twice for the same
> group. Similar problem would be observed in sessionless case.
> Additionally, it will help extend DH to support Elliptic Curves.
> 
> Signed-off-by: Arek Kusztal <arkadiuszx.kusztal at intel.com>
> ---
>  lib/cryptodev/rte_crypto_asym.h | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/lib/cryptodev/rte_crypto_asym.h b/lib/cryptodev/rte_crypto_asym.h
> index b355cbe5fa..728a98f02e 100644
> --- a/lib/cryptodev/rte_crypto_asym.h
> +++ b/lib/cryptodev/rte_crypto_asym.h
> @@ -250,8 +250,6 @@ struct rte_crypto_modinv_xform {
>   *
>   */
>  struct rte_crypto_dh_xform {
> -	enum rte_crypto_asym_ke_type type;
> -	/**< Setup xform for key generate or shared secret compute */
>  	rte_crypto_uint p;
>  	/**< Prime modulus data */
>  	rte_crypto_uint g;
> @@ -379,27 +377,29 @@ struct rte_crypto_rsa_op_param {
>   * @note:
>   */
>  struct rte_crypto_dh_op_param {
> +	enum rte_crypto_asym_ke_type op_type;
> +	/**< Key exchange operation type */
>  	rte_crypto_uint pub_key;
>  	/**<
> -	 * Output generated public key when xform type is
> +	 * Output generated public key when op_type is
>  	 * DH PUB_KEY_GENERATION.
> -	 * Input peer public key when xform type is DH
> +	 * Input peer public key when op_type is DH
>  	 * SHARED_SECRET_COMPUTATION

Add reference with the actual enum field.

>  	 *
>  	 */
> 
>  	rte_crypto_uint priv_key;
>  	/**<
> -	 * Output generated private key if xform type is
> +	 * Output generated private key when op_type is
>  	 * DH PRIVATE_KEY_GENERATION
> -	 * Input when xform type is DH SHARED_SECRET_COMPUTATION.
> +	 * Input when op_type is DH SHARED_SECRET_COMPUTATION.
>  	 *
>  	 */
> 
>  	rte_crypto_uint shared_secret;
>  	/**<
>  	 * Output with calculated shared secret
> -	 * when dh xform set up with op type =
> SHARED_SECRET_COMPUTATION.
> +	 * when op type is SHARED_SECRET_COMPUTATION.
>  	 *
>  	 */
>  };
> --
> 2.13.6