Re: [dpdk-dev] DPDK 2.2 roadmap

["Zhang, Helin" <helin.zhang@intel.com>]

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Thomas Monjalon
> Sent: Thursday, September 10, 2015 8:44 PM
> To: O'Driscoll, Tim
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] DPDK 2.2 roadmap
> 
> 2015-09-09 12:56, O'Driscoll, Tim:
> > DCB for i40e &X550:  DCB support will be extended to the i40e and X550 NICs.
Yes, i40e DCB will be enabled in R2.2.

> 
> A patch for DCB on X550 is already applied but the release notes part was
> forgotten.
> 
> > IPsec Sample App:  A sample application will be provided to show how
> > the cryptodev library can be used to implement IPsec. This will be
> > based on the NetBSD IPsec implementation.
> 
> For each API, it is really interesting to have some unit tests and some examples to
> show how it should be used. However adding an IPsec stack looks to be beyond
> the need of an API example. It may be big and difficult to maintain when
> updating DPDK.
> Why not spawn a new project here: http://dpdk.org/browse/ ?
> 
> > Refactor EAL for Non-PCI Devices:  This has been discussed extensively on the
> mailing list. See the RFCs for Refactor eal driver registration code
> (http://dpdk.org/ml/archives/dev/2015-September/023257.html) and Remove
> pci driver from vdevs
> (http://dpdk.org/ml/archives/dev/2015-August/023016.html).
> 
> I have the feeling we should think it as an unification work to reduce differences
> between physical and virtual devices handling.
> Probably it will have to be continued during 2.3 cycle.
> 
> > Vhost Multi-Queue Support:  The vhost-user library will be updated to provide
> multi-queue support in the host similar to the RSS model so that guest driver may
> allocate multiple rx/tx queues which then may be used to load balance between
> cores. See http://dpdk.org/ml/archives/dev/2015-August/022758.html for more
> details.
> 
> Does it require a patch on Qemu?
> 
> > Config Granularity of RSS for i40e:  All RSS hash and filter configurations for
> IPv4/v6, TCP/UDP, GRE, etc will be implemented for i40e. This includes support
> for QinQ and tunneled packets.
> 
> What is missing in i40e RSS/filtering?
The fields used for HASH-ing is configured by firmware, some of users want to have
a bit more flexibility on selecting packet fields for hashing.

> 
> > I40e 32-bit GRE Keys:  Both 24 and 32 bit keys for GRE will be supported for
> i40e.
> 
> Could you please give more details?
Currently only 24 bits of GRE key will be used for hash/filter calculation, while 32 bits
was wanted by some of users. So either 24 or 32 bits can be selected by the users
from R2.2.

> 
> > X550 Enhancements:  Support VF TSO, more Entries in RSS and per VF RSS,
> network overlay support with flow director for X550.
> 
> Could you please give more details on "network overlay support with flow
> director"?
X550 hardware supports flow director on tunneled packets (VXLAN/NVGRE), these
will be enabled from R2.2.

Regards,
Helin

> 
> Thanks for sharing your plan