Linux Kernel Developers' Netconf 2019

The first rule of Netconf is: You do not talk about Netconf.
The second rule of Netconf is: You do not talk about Netconf.


Netconf is a Linux community conference, by-invitation-only, running since 2004. The agenda has a clear focus on kernel level networking. Attendees are the main maintainers and developers of the Linux networking subsystem.

Due to the distributed nature of the Network subsystem development, contributors to the stack are located in different corners of the globe and coordinate security and bug fixes as well as maintanance and new features via email.

Netconf is intended to be a face to face working meetup to compliment those email exchanges. Problematic unresolved issues are hashed out and bold new ideas are discussed.

  • Location: Boston, MA
  • Date: June 20 - June 21, 2019
  • Sponsor(s) :

  • Committee:
    David S. Miller (, netdev maintainer)
    Daniel Borkmann (

  • Topics/Invitees :

    Name Topic
    David Miller Intro

    Delegation, device driver review team, GitHub
    Daniel Borkmann BPF mesh device as a programmable ipvlan replacement, XFRM integration into tc/BPF
    Alexei Starovoitov Kernel upgrade, and changes to development process
    Eric Dumazet N/A
    Maxim Mikityanskiy AF_XDP: potential to improve
    Jakub Kicinski Outstanding TLS issues; extending "uAPI to FW" and why we shouldn't do it
    Paolo Abeni MDS performance and retpolines
    Willem de Bruijn Resilient receive path and UDP scaling
    Florian Westphal Multipath TCP upstreaming: current state, work-in-progress items and near-future roadmap
    Zorik Machulsky Exposing NIC information to userland
    Magnus Karlsson Networking queues as a first class citizen in the kernel and how to abstract these queues in the uapi
    Jesper Dangaard Brouer XDP feature detection

    SKB creation outside drivers
    Toke Høiland-Jørgensen XDP feature planning

    friendlier UAPI for XDP_REDIRECT
    Jonathan Lemon AF_XDP User Experience
    Marek Majkowski BPF programmable listen socket lookup
    Steffen Klassert Listifyed UDP GRO

    xfrm integration into XDP
    Edward Cree TC stats offload, RX listification
    Michal Kubecek ethtool netlink interface, current state and the future