minutes: IO Visor TSC/Dev Meeting

Brenden Blanco

Hi All,

As usual, here are my notes from the call today.


=== Discussion ===
- Packaging changes
- have Ubuntu 18.04 buildbot tested and ready
- Working on merging Fedora 28 changes with review comments

ovs-ebpf rfc
- stack size limitation
- hoping to use pointer to map to save stack space instead of copying
- discussing decision tree data structure for megaflow lookup
- how to do conntrack, defrag?
- trying a native bpf map implementation for conntrack
- defrag may need a helper, looking at cilium implementation for help
- af_xdp experiments

- bugfixes from syzkaller and other reports
- KTLS and bpf integration - wip

- xdp metadata
- ongoing mailing list discussions
- BTF approach
- still investigating
- con: requires recompile for new hardware
- hoping to standardize on metadata format amongst vendors
- so far, sounds like couple vendors are working with sharing rfcs

- Nadav from VMware presented hyper-upcalls concept with ebpf support
at conference

=== Attendees ===
Brenden Blanco
Daniel Borkmann
William Tu
Jakub Kicinski
Aasif Shaikh
Brendan Gregg
Martin Lau
PF Waskiewicz
Joe Stringer