Re: [dpdk-dev] [PATCH v3] cryptodev: extend api of asymmetric crypto by sessionless

["Kusztal, ArkadiuszX" <arkadiuszx.kusztal@intel.com>]

Hi Akhil,

I will send v4 as I will change a little bit formatting in documentation.

> -----Original Message-----
> From: Kusztal, ArkadiuszX
> Sent: Wednesday, October 9, 2019 10:33 AM
> To: dev@dpdk.org
> Cc: akhil.goyal@nxp.com; Trahe, Fiona <fiona.trahe@intel.com>;
> shallyv@marvell.com; anoobj@marvell.com; Kusztal, ArkadiuszX
> <arkadiuszx.kusztal@intel.com>
> Subject: [PATCH v3] cryptodev: extend api of asymmetric crypto by
> sessionless
> 
> This commit adds asymmetric session-less option to rte_crypto_asym_op.
> Feature flag for sessionless is added to rte_cryptodev.
> 
> Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
> ---
> v2:
> - added union
> v3:
> - added entry into feature matrix
> - added information to prog_guide
> 
>  doc/guides/cryptodevs/features/default.ini | 1 +
>  doc/guides/prog_guide/cryptodev_lib.rst    | 8 +++++++-
>  lib/librte_cryptodev/rte_crypto_asym.h     | 9 +++++++--
>  lib/librte_cryptodev/rte_cryptodev.h       | 2 ++
>  4 files changed, 17 insertions(+), 3 deletions(-)
> 
> diff --git a/doc/guides/cryptodevs/features/default.ini
> b/doc/guides/cryptodevs/features/default.ini
> index d3ee1af..b7f9a0a 100644
> --- a/doc/guides/cryptodevs/features/default.ini
> +++ b/doc/guides/cryptodevs/features/default.ini
> @@ -26,6 +26,7 @@ OOP LB  In LB  Out     =
>  RSA PRIV OP KEY EXP    =
>  RSA PRIV OP KEY QT     =
>  Digest encrypted       =
> +Asymmetric sessionless =
> 
>  ;
>  ; Supported crypto algorithms of a default crypto driver.
> diff --git a/doc/guides/prog_guide/cryptodev_lib.rst
> b/doc/guides/prog_guide/cryptodev_lib.rst
> index 9719944..9ecb322 100644
> --- a/doc/guides/prog_guide/cryptodev_lib.rst
> +++ b/doc/guides/prog_guide/cryptodev_lib.rst
> @@ -876,7 +876,13 @@ private asymmetric session data. Once this is done,
> session should be freed usin
> 
>  Asymmetric Sessionless Support
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> -Currently asymmetric crypto framework does not support sessionless.
> +Asymmetric crypto framework support sessionless operations.
> +
> +Fields that should be set by user are:
> +- rte_crypto_asym_xform *xform member of struct rte_crypto_asym_op
> +should point to the asymmetric crypto xform. Note that this xform
> +should be immutable for the lifetime of associated crypto_op.
> +- uint8_t sess_type member of rte_crypto_op should be set to
> RTE_CRYPTO_OP_SESSIONLESS.
> 
>  Transforms and Transform Chaining
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> diff --git a/lib/librte_cryptodev/rte_crypto_asym.h
> b/lib/librte_cryptodev/rte_crypto_asym.h
> index 4fbef2f..0d34ce8 100644
> --- a/lib/librte_cryptodev/rte_crypto_asym.h
> +++ b/lib/librte_cryptodev/rte_crypto_asym.h
> @@ -522,8 +522,13 @@ struct rte_crypto_dsa_op_param {
>   *
>   */
>  struct rte_crypto_asym_op {
> -	struct rte_cryptodev_asym_session *session;
> -	/**< Handle for the initialised session context */
> +	RTE_STD_C11
> +	union {
> +		struct rte_cryptodev_asym_session *session;
> +		/**< Handle for the initialised session context */
> +		struct rte_crypto_asym_xform *xform;
> +		/**< Session-less API crypto operation parameters */
> +	};
> 
>  	__extension__
>  	union {
> diff --git a/lib/librte_cryptodev/rte_cryptodev.h
> b/lib/librte_cryptodev/rte_cryptodev.h
> index e175b83..c6ffa3b 100644
> --- a/lib/librte_cryptodev/rte_cryptodev.h
> +++ b/lib/librte_cryptodev/rte_cryptodev.h
> @@ -448,6 +448,8 @@ rte_cryptodev_asym_get_xform_enum(enum
> rte_crypto_asym_xform_type *xform_enum,  /**< Support RSA Private Key
> OP with CRT (quintuple) Keys */
>  #define RTE_CRYPTODEV_FF_DIGEST_ENCRYPTED		(1ULL << 19)
>  /**< Support encrypted-digest operations where digest is appended to data
> */
> +#define RTE_CRYPTODEV_FF_ASYM_SESSIONLESS		(1ULL << 20)
> +/**< Support asymmetric session-less operations */
> 
> 
>  /**
> --
> 2.1.0