Re: [PATCH net v2 0/2] tcp: correct timestamp echo for accepted old ACKs

Hello:

This series was applied to netdev/net.git (main)
by David S. Miller [off-list ref]:

On Thu, 24 Sep 2026 15:44:57 -0700 you wrote:

Linux can acknowledge newly received data while echoing an outdated
TCP timestamp. This happens when a reordered packet fills a receive gap
but carries an older acknowledgment for traffic in the other direction.
If the sender uses this echo to measure round-trip time after a long idle
period, the stale timestamp can inflate its estimate and slow its sending.

Changes in v2, following Eric Dumazet's review:
- Remove the redundant SYN_RECV condition and unused flag accumulation.
- Replace the log-parsing wrapper with a plain packetdrill test that checks
  the timestamp echo directly, using the existing selftest runner.
- Rebase on net fc6d80eb5044.

[...]

Here is the summary with links:
  - [net,v2,1/2] tcp: refresh TS.Recent for accepted old ACKs
    https://git.kernel.org/netdev/net/c/1b92780ae4fc
  - [net,v2,2/2] selftests: net: check timestamp echo after an old ACK
    https://git.kernel.org/netdev/net/c/81fe707ae58e

You are awesome, thank you!
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