[PATCH] Document TCP_DEFER_ACCEPT rounding

Josh Triplett
2026-04-16T21:57:52Z

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Patch attached.

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From ad2b798376326d40944f6998270a755f61c57815 Mon Sep 17 00:00:00 2001
Message-ID: <ad2b798376326d40944f6998270a755f61c57815.1776374539.git.josh@joshtriplett.org>
From: Josh Triplett <josh@joshtriplett.org>
Date: Thu, 16 Apr 2026 14:21:34 -0700
Subject: [PATCH] Document `TCP_DEFER_ACCEPT` rounding

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
---
man/man7/tcp.7 | 2 ++
1 file changed, 2 insertions(+)

diff --git a/man/man7/tcp.7 b/man/man7/tcp.7
index ff46ea7bc..26a99b879 100644
--- a/man/man7/tcp.7
+++ b/man/man7/tcp.7
@@ -1091,6 +1091,8 @@ Allow a listener to be awakened only when data arrives on the socket.
Takes an integer value (seconds), this can
bound the maximum number of attempts TCP will make to
complete the connection.
+The kernel will round this value up to the next larger TCP retransmit
+duration.
.IP
On a client socket,
if nonzero,
--
2.53.0