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

[Akhil Goyal]

> 
> 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 at dpdk.org
> > Cc: akhil.goyal at nxp.com; Trahe, Fiona <fiona.trahe at intel.com>;
> > shallyv at marvell.com; anoobj at marvell.com; Kusztal, ArkadiuszX
> > <arkadiuszx.kusztal at 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 at 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.

Please re-phrase this section properly as well.


> > +
> > +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