[dpdk-dev] [RFC v3, 1/3] cryptodev: set private data for session-less mode
Gujjar, Abhinandan S
abhinandan.gujjar at intel.com
Tue Feb 13 10:22:24 CET 2018
A gentle remainder for review :)
-Abhinandan
> -----Original Message-----
> From: Gujjar, Abhinandan S
> Sent: Thursday, February 1, 2018 3:00 PM
> To: Doherty, Declan <declan.doherty at intel.com>; akhil.goyal at nxp.com; De
> Lara Guarch, Pablo <pablo.de.lara.guarch at intel.com>;
> Jerin.JacobKollanukkaran at cavium.com
> Cc: dev at dpdk.org; Vangati, Narender <narender.vangati at intel.com>; Gujjar,
> Abhinandan S <abhinandan.gujjar at intel.com>; Rao, Nikhil
> <nikhil.rao at intel.com>
> Subject: [RFC v3, 1/3] cryptodev: set private data for session-less mode
>
> The application may want to store private data along with the rte_crypto_op
> that is transparent to the rte_cryptodev layer.
> For e.g., If an eventdev based application is submitting a crypto session-less
> operation and wants to indicate event information required to construct a new
> event that will be enqueued to eventdev after completion of the crypto
> operation. This patch provides a mechanism for the application to associate this
> information with the rte_crypto_op in session-less mode.
>
> Signed-off-by: Abhinandan Gujjar <abhinandan.gujjar at intel.com>
> Signed-off-by: Nikhil Rao <nikhil.rao at intel.com>
> ---
> Notes:
> V3:
> 1. Added separate patch for session-less private data
> 2. Added more information on offset
> V2:
> 1. Removed enum rte_crypto_op_private_data_type
> 2. Corrected formatting
>
> lib/librte_cryptodev/rte_crypto.h | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/lib/librte_cryptodev/rte_crypto.h b/lib/librte_cryptodev/rte_crypto.h
> index 95cf861..2540426 100644
> --- a/lib/librte_cryptodev/rte_crypto.h
> +++ b/lib/librte_cryptodev/rte_crypto.h
> @@ -84,8 +84,14 @@ struct rte_crypto_op {
> */
> uint8_t sess_type;
> /**< operation session type */
> + uint16_t private_data_offset;
> + /**< Offset to indicate start of private data (if any). The offset
> + * is counted from the start of the rte_crypto_op including IV.
> + * The private data may be used by the application to store
> + * information which should remain untouched in the library/driver
> + */
>
> - uint8_t reserved[5];
> + uint8_t reserved[3];
> /**< Reserved bytes to fill 64 bits for future additions */
> struct rte_mempool *mempool;
> /**< crypto operation mempool which operation is allocated from */
> --
> 1.9.1
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