From owner-svn-src-head@freebsd.org Sun Dec 1 19:20:28 2019 Return-Path: Delivered-To: svn-src-head@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 EBC5C1B559D; Sun, 1 Dec 2019 19:20:28 +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) server-signature RSA-PSS (4096 bits) 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 47Qykh5w9bz491X; Sun, 1 Dec 2019 19:20:28 +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 AB6B11B515; Sun, 1 Dec 2019 19:20:28 +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 xB1JKSKb072000; Sun, 1 Dec 2019 19:20:28 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id xB1JKSOC071999; Sun, 1 Dec 2019 19:20:28 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201912011920.xB1JKSOC071999@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Sun, 1 Dec 2019 19:20:28 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r355268 - head/share/man/man4 X-SVN-Group: head X-SVN-Commit-Author: tuexen X-SVN-Commit-Paths: head/share/man/man4 X-SVN-Commit-Revision: 355268 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 Dec 2019 19:20:29 -0000 Author: tuexen Date: Sun Dec 1 19:20:28 2019 New Revision: 355268 URL: https://svnweb.freebsd.org/changeset/base/355268 Log: 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: Richard Scheffenegger MFC after: 1 week Modified: head/share/man/man4/tcp.4 Modified: head/share/man/man4/tcp.4 ============================================================================== --- head/share/man/man4/tcp.4 Sun Dec 1 18:47:53 2019 (r355267) +++ head/share/man/man4/tcp.4 Sun Dec 1 19:20:28 2019 (r355268) @@ -34,7 +34,7 @@ .\" From: @(#)tcp.4 8.1 (Berkeley) 6/5/93 .\" $FreeBSD$ .\" -.Dd August 26, 2019 +.Dd December 1, 2019 .Dt TCP 4 .Os .Sh NAME @@ -538,6 +538,9 @@ 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