[dpdk-dev] Offloading L4 checksum to crypto device

[Heng Wang]

Hi Fiona,
  Thanks for the info. Do you have a sample application to show how it works? It's better to have an example of chaining udp checksum with encryption/decryption. I am also wondering to which version it will merge?

Regards,
Heng

-----Original Message-----
From: Trahe, Fiona <fiona.trahe at intel.com> 
Sent: den 5 februari 2020 18:23
To: Heng Wang <heng.wang at ericsson.com>; Doherty, Declan <declan.doherty at intel.com>
Cc: Filip Pudak <filip.pudak at ericsson.com>; dev at dpdk.org; Trahe, Fiona <fiona.trahe at intel.com>; Coyle, David <david.coyle at intel.com>
Subject: RE: Offloading L4 checksum to crypto device

Hi Heng,
This may be of interest for your use-case.
https://patches.dpdk.org/patch/65559/
Fiona

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Heng Wang
> Sent: Monday, December 23, 2019 2:28 PM
> To: Doherty, Declan <declan.doherty at intel.com>
> Cc: Filip Pudak <filip.pudak at ericsson.com>; dev at dpdk.org
> Subject: [dpdk-dev] Offloading L4 checksum to crypto device
> 
> Hi,
>  This is Heng from Ericsson. We are now developing a platform based on 
> dpdk. The platform usually processes the ipsec packets encapsulating udp packets.
>   You know, calculating udp checksum is always time consuming. We 
> found a hardware solution where our crypto device can calculate the udp checksum during encryption.
>  Unfortunately, in DPDK, I didn't find any feature flag for it. Also 
> the API rte_cryptodev_configure doesn't allow us to pass any offload flag to the crypto device.
>  I think this could be a common case to calculate something, like 
> checksums, before encryption in crypto devices. Should we consider add 
> some new feature flag and offload support in dpdk crypto device?
> 
> Regards,
> Heng