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June 7, 2017 (Wednesday), 13:00-16:00

DMS 1140

We will discuss ongoing work, and ideas for improvements to, the transport protocols in the FreeBSD kernel.

There is a group that meets regularly to discuss transport work in the kernel. Notes of the group's work can be found here. The face-to-face time will allow us to whiteboard and discuss complex topics in an extended time. It will also allow us to include participants who are not able to make the regular meetings.

If you would like to participate, contact the working group chairs below and CC devsummit@. You will be then added to this page. Please include a list of things you want to talk about or the areas you are interested in. This helps us in planning the session and to bring people together with common interests.

It may be possible to bring in people who cannot attend in person via video conference or chat tools. Notes during the session will be published later on for the whole community to see what we discussed.

In general, there are two areas we would like to cover:

  1. Discussions of ongoing work that is complex enough, requires coordination, or requires architectural decisions that would benefit from face-to-face discussion among a larger group.
  2. Exchange of ideas for upcoming work to gauge community interest, solicit feedback, look for conflicts/overlap, and generally keep everyone informed.

In particular, we may (or may not) cover the following suggested topics. This is not an exhaustive list and if you feel there is something missing that you want to talk about, contact one of the session chairs and we will include your topic here. Note that the numbering of the topics does not represent an ordering or importance indication of any kind, but rather a reference to the second table with the “topic of interest” column.

The final agenda will be guided by the interest the attendees express, so we may not even talk about any topics listed below if it appears there is little to no interest in the topic among the attendees. Therefore, if you feel strongly that we should discuss a topic, please communicate that to the chairs.

# Topic Description
1 RACK, BBR (RandallStewart)
2 Alternate stacks: How do we maintain them? What is the support expectation? How do we minimize code duplication? Etc.
3 Testing alternate TCP stacks: testing multiple module versions (JonathanLooney)
4 Packet Pacing (Netflix learnings)
5 –iflib status??–
6 –Network stack as a module (SteveKiernan)–
7 Callout reworking (HansPetterSelasky notes one possible option: hps_head branch)
8 Listen sockets (GlebSmirnoff)
9 RSS update (see also this)?
10 More efficient mbuf design for sendfile and friends (DrewGallatin)
11 Drivers providing backpressure information to higher layers
12 Drivers providing packet timestamps to higher layers
13 TCP troubleshooting
14 LLE callout problem (D4605)

Note: General presentations about work you have done that does not require further discussions should be submitted for the FreeBSD Developer Summit track at BSDCan (see the general developer summit page).

In order to attend you need register for the developer summit as well as by email for the session and be confirmed by the working group organizers. Follow the guidelines described on the main page or what you received by email. For questions or if in doubt ask the session chairs.

Please do NOT add yourself here. Your name will appear automatically once you received the confirmation email. You need to put your name on the general developer summit attendees list though.

# Name Username / Affiliation Topics of Interest Notes
1 JonathanLooney jtl@ Session co-chair
2 DrewGallatin gallatin@ 10, 11, 12
3 RandallStewart rrs@
4 SepherosaZiehau sephe@
5 MichaelTuexen tuexen@
6 BjoernZeeb bz@
7 EricVanGyzen vangyzen@
8 SteveWills swills@
9 NavdeepParhar np@ 2, 4, 10
10 Steve Wahl Dell EMC
11 Jason Eggleston LimeLight Networks
12 LawrenceStewart lstewart@
13 RyanStone rstone@
14 Ming Qiao Juniper Networks
15 HansPetterSelasky hselasky@ 14
16 MikeKarels karels@
17 MikeSilbersack silby@ 2, 6
18 Siva Mahadevan FreeBSD Foundation/emaste@
19 Charlie Yang FreeBSD Foundation/emaste@
20 DavidSomayajulu davidcs@
21 Kevin Bowling LimeLight Networks

Minutes to be provided after the meeting.

  • devsummit/201706/transport.1496853882.txt.gz
  • Last modified: 2017/06/07 16:44
  • by JonathanLooney