[dpdk-dev] Offloading L4 checksum to crypto device

Trahe, Fiona fiona.trahe at intel.com
Wed Feb 5 18:22:46 CET 2020


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


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