Hangout 25 April 2019
Old Business
- IPv6 Fragment reviews which need testing:
IPv6 modernization project: Wiki Page
Julius proposed importing OpenBSD fragmentation regression test cases (see D17376). thj@ is working on it.
- IP6 IDs (and IP IDs, maybe?): may use an insecure algorithm. Ideally, switch to some sort of per-host-pair hash?
- What do OpenBSD/NetBSD do?
- Perhaps, a small cache would be sufficient?
Congestion window collapse: D17614 (review by lstewart@)
- @tuexen to commit
jtl@ to send patch to Richard for burst mitigation in the default stack. An idea is in D19047.
Still need to do.
D18811: standardize on snd_recover (vs. sack_newdata). Reviewer: tuexen@, lstewart@.
- @tuexen will review again.
D18624: RFC 6675 support. Actual functionality in D18985.
- Helps when HW LRO is enabled.
Also, this enables a PRR patch (based on Lars work). D18892. Needs review.
CUBIC: Only invoking NewReno after_idle, not resetting ssthreash, not resetting epoch time: D18982, D18954, and D19118. Including another issue, this will be discussed at the IETF.
- lstewart@ is the best person to review this.
D19000 deal with a bug that the 1 byte occupied in the sequence number space by SYN segments results in a cwnd increase when acked. This bug exists only on the server side. tuexen@ and Richard are working on it.
Richard is working on burst mitigation. An initial version (WIP) is available as D19047.
New Things
D20028: NUMA aware INPCB
- Can we lower TIME_WAIT?
- tun/tap interfaces: should we see outgoing packets in tcpdump? @tuexen will add
Next Meeting
Scheduled for 9 May, 14:00 UTC.