[dpdk-dev] Offloading L4 checksum to crypto device

[dpdk-dev] Offloading L4 checksum to crypto device

[Heng Wang]

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

Re: [dpdk-dev] Offloading L4 checksum to crypto device

[Trahe, Fiona]

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

> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Heng Wang
> Sent: Monday, December 23, 2019 2:28 PM
> To: Doherty, Declan <declan.doherty@intel.com>
> Cc: Filip Pudak <filip.pudak@ericsson.com>; dev@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

Re: [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@intel.com> 
Sent: den 5 februari 2020 18:23
To: Heng Wang <heng.wang@ericsson.com>; Doherty, Declan <declan.doherty@intel.com>
Cc: Filip Pudak <filip.pudak@ericsson.com>; dev@dpdk.org; Trahe, Fiona <fiona.trahe@intel.com>; Coyle, David <david.coyle@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@dpdk.org> On Behalf Of Heng Wang
> Sent: Monday, December 23, 2019 2:28 PM
> To: Doherty, Declan <declan.doherty@intel.com>
> Cc: Filip Pudak <filip.pudak@ericsson.com>; dev@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

Re: [dpdk-dev] Offloading L4 checksum to crypto device

[Trahe, Fiona]

Right now it's just an RFC. 
If you want to influence it you can take part in that discussion.
Or in development of a sample app to do what you propose.


> -----Original Message-----
> From: Heng Wang <heng.wang@ericsson.com>
> Sent: Thursday, February 6, 2020 8:03 AM
> To: Trahe, Fiona <fiona.trahe@intel.com>; Doherty, Declan <declan.doherty@intel.com>
> Cc: Filip Pudak <filip.pudak@ericsson.com>; dev@dpdk.org; Coyle, David <david.coyle@intel.com>
> Subject: RE: Offloading L4 checksum to crypto device
> 
> 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@intel.com>
> Sent: den 5 februari 2020 18:23
> To: Heng Wang <heng.wang@ericsson.com>; Doherty, Declan <declan.doherty@intel.com>
> Cc: Filip Pudak <filip.pudak@ericsson.com>; dev@dpdk.org; Trahe, Fiona <fiona.trahe@intel.com>;
> Coyle, David <david.coyle@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@dpdk.org> On Behalf Of Heng Wang
> > Sent: Monday, December 23, 2019 2:28 PM
> > To: Doherty, Declan <declan.doherty@intel.com>
> > Cc: Filip Pudak <filip.pudak@ericsson.com>; dev@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