From: Jakub Kicinski <kuba@kernel.org>
To: nramaswamy@openai.com
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH net 1/2] tcp: restore RACK list membership when undoing loss
Date: Thu, 1 Oct 2026 16:07:20 -0700 [thread overview]
Message-ID: <20261001160720.0a663ec7@kernel.org> (raw)
In-Reply-To: <20260926002520.42955-5-nramaswamy@openai.com>
On Fri, 25 Sep 2026 17:25:22 -0700 nramaswamy@openai.com wrote:
> Partial undo can clear the TCPCB_LOST flag on segments already removed from
> RACK's list, which prevents subsequent RACK loss detection and can lead to
> long retransmission delays. Restoring them to the RACK list allows them to
> be reconsidered for fast retransmission in the future. To do this, we first
> sort the segments whose lost flag is being cleared, and reinsert them into
> the RACK list (which is sorted by transmission time).
Could you add to the commit msg if this was found with an LLM scan
of the source code or its been seen in prod?
next prev parent reply other threads:[~2026-10-01 23:07 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-26 0:25 [PATCH net 0/2] tcp: preserve RACK tracking across partial undo nramaswamy
2026-09-26 0:25 ` [PATCH net 1/2] tcp: restore RACK list membership when undoing loss nramaswamy
2026-09-30 2:13 ` Jiayuan Chen
2026-10-01 0:30 ` Kuniyuki Iwashima
2026-10-01 23:07 ` Jakub Kicinski [this message]
2026-10-01 23:33 ` nramaswamy
2026-09-26 0:25 ` [PATCH net 2/2] selftests: net: packetdrill: test RACK after partial undo nramaswamy
2026-09-28 21:53 ` [PATCH net 0/2] tcp: preserve RACK tracking across " nramaswamy
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