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To clarify:

  1. Impact on application adopting AF_XDP?
  2. How does it impact another app using DPDK/SR-IOV - on same node?
  3. How it works in virtualized environments?

Text WIP before creating PR:

...

Exposed Performance Optimisation Capabilities

Ref

Cloud Infrastructure Capability

Unit

Definition/Notes

e.cap.025

AF_XDP

Yes/No

Indicates if Cloud Infrastructure supports AF_XDP

Table 4-2: Exposed Performance Optimisation Capabilities of Cloud Infrastructure

Profiles Specifications & Capability Mapping

Ref

Capability

Basic

High Performance

Notes

e.cap.025

AF_XDP

No

Optional

These Capabilities require workload support for AF_XDP socket type.


Chapter 10 (last)

AF_XDP

Linux-native AF_XDP promises high enough packet processing performance and simplification compared to what SR-IOV and DPDK require for initial installation and later lifecycle management. Still, it will take time till AF_XDP-based solutions are financially invested and matured enough in both Virtualization Infrastructure and Network Functions.