Date: Wed, 1 Jul 2020 20:45:26 +0000 (UTC) From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r362864 - stable/12/share/man/man4 Message-ID: <202007012045.061KjQLx088795@repo.freebsd.org>
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Author: tuexen Date: Wed Jul 1 20:45:26 2020 New Revision: 362864 URL: https://svnweb.freebsd.org/changeset/base/362864 Log: MFC r355268: Add a description for the TCP sysctl variable rfc6675_pipe. It was introduced by r290122, but no documentation was provided. This is taken from https://reviews.freebsd.org/D21798, since it is not related to the feature added there. Submitted by: rscheff Modified: stable/12/share/man/man4/tcp.4 Directory Properties: stable/12/ (props changed) Modified: stable/12/share/man/man4/tcp.4 ============================================================================== --- stable/12/share/man/man4/tcp.4 Wed Jul 1 20:41:23 2020 (r362863) +++ stable/12/share/man/man4/tcp.4 Wed Jul 1 20:45:26 2020 (r362864) @@ -34,7 +34,7 @@ .\" From: @(#)tcp.4 8.1 (Berkeley) 6/5/93 .\" $FreeBSD$ .\" -.Dd July 23, 2019 +.Dd December 1, 2019 .Dt TCP 4 .Os .Sh NAME @@ -493,6 +493,9 @@ The value should be relative to the link capacity. Start with small values for lower-capacity links. Large bursts can cause buffer overruns and packet drops if routers have small buffers or the link is experiencing congestion. +.It Va rfc6675_pipe +Calculate the bytes in flight using the algorithm described in RFC 6675, and +is also a prerequisite to enable Proportional Rate Reduction. .It Va rfc3042 Enable the Limited Transmit algorithm as described in RFC 3042. It helps avoid timeouts on lossy links and also when the congestion window
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