From owner-svn-src-stable@freebsd.org Wed Jul 1 20:45:27 2020 Return-Path: Delivered-To: svn-src-stable@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 4309235B668; Wed, 1 Jul 2020 20:45:27 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49xtXR0zxfz3Whf; Wed, 1 Jul 2020 20:45:27 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 05501F5AC; Wed, 1 Jul 2020 20:45:27 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 061KjQUO088796; Wed, 1 Jul 2020 20:45:26 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 061KjQLx088795; Wed, 1 Jul 2020 20:45:26 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <202007012045.061KjQLx088795@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Wed, 1 Jul 2020 20:45:26 +0000 (UTC) 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 X-SVN-Group: stable-12 X-SVN-Commit-Author: tuexen X-SVN-Commit-Paths: stable/12/share/man/man4 X-SVN-Commit-Revision: 362864 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Jul 2020 20:45:27 -0000 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