This document discusses dynamic device personalization (DDP) using Intel Ethernet 700 Series network cards. DDP allows run-time updating and configuration of the parse graph to expand or modify protocol support. This enables identification and processing of new protocols like MPLSoGRE, GTP-U/GTP-C, and QUIC without requiring a reboot. DPDK APIs allow downloading DDP profiles to enable parsing of additional protocols and configuring traffic steering based on tunnel IDs. With DDP, encapsulated frame fields can be extracted and used for functions like RSS, whereas without DDP those protocols would not be recognized.

1. Brian Johnson, Intel® Corporation
Andrey Chilikin, Intel® Corporation
DPDK Summit - San Jose – 2017
Flexible And Extensible Support for
New Protocol Processing with DPDK
using Dynamic Device
Personalization
#DPDKSummit

2. 2
Network Landscape

3. 3
Network Landscape
Enterprise
GiLANWireless
Wireline

4. 4
Dynamic Device Personalization (DDP)
Dynamic Device Personalization (DDP) profiles for
Intel® Ethernet 700 Series enables run-time updating and
configuration of parse graph to expand or modify protocol
support allowing early adoption of new technologies
Example:
u Default Tunneling protocol support
u VXLAN, GENEVE, NVGRE, MPLS, VXLAN-GPE currently
supported but limited by hardware resources
u Dynamic Device Personalization enables
1. Loadable profiles for packet classification for
additional or modification of existing protocols
u e.g. MPLSoGRE, GTP-U/GTP-C, PPPoE, QUIC, ESP, AH
2. Configurable tunnel filters for traffic steering
u Steering packets to VM queues on QinQ/tunnel ID
Load Distribution Software
Worker 0 Worker 1 Worker n
Worker 0 Worker 1 Worker n
External traffic
(e.g. GTP-U/GTP-C)
External traffic
(e.g. GTP-U/GTP-C)
Host Software analyzes
and distributes packets
(without DDP)
NIC Hardware with DDP
enabled Profile and
configured traffic steering
Packet analyzes and distribution is done on
NIC with additional Rx Descriptor Data

5. 5
Dynamic Device Personalization DPDK
APIs*
u rte_pmd_i40e_get_ddp_list()
get the list of registered profile(s)
u rte_pmd_i40e_process_ddp_package()
download dynamic device personalization profile to the device and register profile
rollback dynamic device personalization profile and un-register it
u rte_pmd_i40e_get_ddp_info()
request information about a profile without downloading it to the NIC
* Requires XL710 firmware version 6.01
https://downloadcenter.intel.com/product/75021/Intel-Ethernet-Controller-XL710-Series

6. 6
Dynamic Device Personalization:
Without vs. With, GTP-U example
Default FVL6 processing (without Personalization profile):
DA SA IPv4 UDP GTP TEID IPv4 TCP PAY
Parsed fields Payload
FVL6 with Personalization profile applied:
DA SA IPv4 UDP GTP TEID IPv4 TCP PAY
Parsed fields Payload
RSS
RSS
GTP-U is unknown flow type, so no RSS, FDIR or other filters are possible on encapsulated frame
GTP-U flow type is defined, encapsulated frame fields (including GTP TEID) can be used for RSS, FDIR.
Encapsulated frame type is indicated on RX descriptor, for example, TCP in GTP-U or GTP-U echo message
GTP-C flow type is defined as well and has separate RSS/FDIR configuration.
RSS
RSS
RSS
Packet type: UDP in IPv4
Packet type: TCP in GTP-U

7. 7
Without Dynamic Device Personalization Profiles Loaded
DDP

8. 8
With Dynamic Device Personalization GTP, QUIC & IPsec Profiles Loaded
DDP

9. 9
With Dynamic Device Personalization RSS Queue Regions Assigned
DDP

10. 10
Summary
u Dynamic Device Personalization can be used on any OS supported by DPDK
u For example, QUIC protocol classification on both Windows and Linux OSes
u Dynamic Device Personalization allows a DPDK application to enable identification of new
protocols, for example, GTP, PPPoE, QUIC, MPLSoGRE, SRv6, etc without requiring a reboot
due to changing hardware or firmware updates.
u Allows for existing Parse Graphs to be modified to support new usage models as they are
defined enabling faster time to market for DPDK enable applications.
DPDK on Microsoft Windows DPDK on Linux

11. Thank
You
Dynamic Device Personalization
Core Team
Eyal Prashker
Yochai Hagvi
Andrey Chilikin
Brian Johnson
Robin Giller
DPDK Team
Helin Zhang
Heqing Zhu
Dynamic Device Personalization with GTP and QUIC Profiles
Special Thanks to Michael Shearer and Patrick Kutch for all the help on the
development of the DDP Dashboard and server instrumentation development
BIF Framework -- https://github.com/intel/Board-Instrumentation-Framework