[dpdk-dev] [dpdk-dev v9 1/4] cryptodev: add crypto data-path service APIs
Zhang, Roy Fan
roy.fan.zhang at intel.com
Mon Sep 21 17:41:42 CEST 2020
Hi AKhil
> -----Original Message-----
> From: Akhil Goyal <akhil.goyal at nxp.com>
> Sent: Monday, September 21, 2020 1:00 PM
> To: Zhang, Roy Fan <roy.fan.zhang at intel.com>; dev at dpdk.org; Ananyev,
> Konstantin <konstantin.ananyev at intel.com>; Thomas Monjalon
> <thomas at monjalon.net>
> Cc: Trahe, Fiona <fiona.trahe at intel.com>; Kusztal, ArkadiuszX
> <arkadiuszx.kusztal at intel.com>; Dybkowski, AdamX
> <adamx.dybkowski at intel.com>; Bronowski, PiotrX
> <piotrx.bronowski at intel.com>; Anoob Joseph <anoobj at marvell.com>
> Subject: RE: [dpdk-dev v9 1/4] cryptodev: add crypto data-path service APIs
>
...
> IMO, the following union can clarify all doubts.
> @Ananyev, Konstantin: Any suggestions from your side?
>
> /** IV and aad information for various use cases. */
> union {
> /** Supposed to be used with CPU crypto API call. */
> struct {
> /** array of pointers to IV */
> void **iv;
> /** array of pointers to AAD */
> void **aad;
> /** array of pointers to digest */
> void **digest;
> } cpu_crypto; < or any other useful name>
> /* Supposed to be used with HW raw crypto API call. */
> struct {
> void *cipher_iv_ptr;
> rte_iova_t cipher_iv_iova;
> void *auth_iv_ptr;
> rte_iova_t auth_iv_iova;
> void *digest_ptr;
> rte_iova_t digest_iova;
> } hw_chain;
> /* Supposed to be used with HW raw crypto API call. */
> struct {
> void *iv_ptr;
> rte_iova_t iv_iova;
> void *digest_ptr;
> rte_iova_t digest_iova;
> void *aad_ptr;
> rte_iova_t aad_iova;
> } hw_aead;
> };
>
>
The above structure cannot support the array of multiple jobs but a single job.
So we have to use something like
struct {
void **cipher_iv_ptr;
rtei_iova_t *cipher_iv_iova;
...
} hw_chain;
struct {
void **iv_ptr;
rte_iova_t *iv_iova;
...
} hw_aead;
Is it ok?
Regards,
Fan
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