[roll] Roll fuchsia [netstack3] Introduce SACK recovery counters

Add counters related to SACK recovery. Whenever we enter in loss
recovery, tell the caller which recovery mode was entered so the
counters can be incremented accordingly.

To avoid peeking back into CongestionControls state to increment
counters, we now return the LossRecoveryMode from
CongestionControl::poll_send. This also eliminates an ambiguous
situation where LossRecovery is set, but we're not yet counting
retransmitted because we're counting duplicate ACKs, for example.

While I'm here:
- Improve the semantics around the retransmit counters:
-- Retransmits  count every frame sent before SND.MAX. These should
increment post RTO until we hit SND.MAX again.
-- SlowStartRetransmits count every retransmitted frame (before SND.MAX)
while congestion control says it's in slow start.
- Add a duplicate ACK counter.

Original-Bug: 42078221
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1242088
Original-Revision: 8c16f9cc04c01badc3eff2d8109978ab57287f6a
GitOrigin-RevId: a99296dfec2d881b4b81e6ce025ab34ef6d58c4a
Change-Id: Iac4d90f113fa1c4bdd1a439076dc4c71735f950e
1 file changed
tree: 50e270e9b53f9335b0b127806d45bc50ddaa5fe1
  1. ctf/
  2. git-hooks/
  3. infra/
  4. third_party/
  5. cts
  6. firmware
  7. flower
  8. jiri.lock
  9. MILESTONE
  10. minimal
  11. prebuilts
  12. README.md
  13. stem
  14. test_durations
  15. toolchain
README.md

Integration

This repository contains Fuchsia's Global Integration manifest files.

Making changes

All changes should be made to the internal version of this repository. Our infrastructure automatically updates this version when the internal one changes.

Currently all changes must be made by a Google employee. Non-Google employees wishing to make a change can ask for assistance in one of the communication channels documented at get involved.

Obtaining the source

First install Jiri.

Next run:

$ jiri init
$ jiri import minimal https://fuchsia.googlesource.com/integration
$ jiri update

Third party

Third party projects should have their own subdirectory in ./third_party.