Date: Sat, 10 Jan 2015 22:04:19 +0000 (UTC) From: Glen Barber <gjb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r276933 - in head/release/doc: en_US.ISO8859-1/relnotes share/xml Message-ID: <201501102204.t0AM4JRI087479@svn.freebsd.org>
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Author: gjb Date: Sat Jan 10 22:04:18 2015 New Revision: 276933 URL: https://svnweb.freebsd.org/changeset/base/276933 Log: Document r272720, PLPMTUD blackhole detection (RFC 4821). Add Limelight Networks to sponsors.ent. Sponsored by: The FreeBSD Foundation Modified: head/release/doc/en_US.ISO8859-1/relnotes/article.xml head/release/doc/share/xml/sponsor.ent Modified: head/release/doc/en_US.ISO8859-1/relnotes/article.xml ============================================================================== --- head/release/doc/en_US.ISO8859-1/relnotes/article.xml Sat Jan 10 22:04:15 2015 (r276932) +++ head/release/doc/en_US.ISO8859-1/relnotes/article.xml Sat Jan 10 22:04:18 2015 (r276933) @@ -290,6 +290,81 @@ <para revision="263140">Support for the IPX network transport protocol has been removed, and will not be supported in &os; 11 and later releases.</para> + + <para revision="272720" contrib="sponsor" + sponsor="&limelight;">Support for <acronym>PLPMTUD</acronym> + blackhole detection (<acronym>RFC</acronym> 4821) has been + added to the &man.tcp.4; stack, disabled by default. New + control tunables have been added:</para> + + <informaltable frame="none" pgwide="0"> + <tgroup cols="2"> + <colspec colwidth="1*"/> + <colspec colwidth="1*"/> + <thead> + <row> + <entry>Tunable</entry> + <entry>Description</entry> + </row> + </thead> + + <tbody> + <row> + <entry><literal>net.inet.tcp.pmtud_blackhole_detection</literal></entry> + <entry>Enables or disables <acronym>PLPMTUD</acronym> + blackhole detection</entry> + </row> + + <row> + <entry><literal>net.inet.tcp.pmtud_blackhole_mss</literal></entry> + <entry><acronym>MSS</acronym> to try for IPv4</entry> + </row> + + <row> + <entry><literal>net.inet.tcp.v6pmtud_blackhole_mss</literal></entry> + <entry><acronym>MSS to try for IPv6</acronym></entry> + </row> + </tbody> + </tgroup> + </informaltable> + + <para>New monitoring &man.sysctl.8;s haven been added:</para> + + <informaltable frame="none" pgwide="0"> + <tgroup cols="2"> + <colspec colwidth="1*"/> + <colspec colwidth="1*"/> + <thead> + <row> + <entry>Tunable</entry> + <entry>Description</entry> + </row> + </thead> + + <tbody> + <row> + <entry><literal>net.inet.tcp.pmtud_blackhole_activated</literal></entry> + <entry>Number of times the code was activated to attempt + downshifting the <acronym>MSS</acronym></entry> + </row> + + <row> + <entry><literal>net.inet.tcp.pmtud_blackhole_min_activated</literal></entry> + <entry>Number of times the blackhole + <acronym>MSS</acronym> was used in an attempt to + downshift</entry> + </row> + + <row> + <entry><literal>net.inet.tcp.pmtud_blackhole_failed</literal></entry> + <entry>Number of times that the blackhole failed to + connect after downshifting the + <acronym>MSS</acronym></entry> + </row> + </tbody> + </tgroup> + </informaltable> + </sect3> <sect3 xml:id="disks"> Modified: head/release/doc/share/xml/sponsor.ent ============================================================================== --- head/release/doc/share/xml/sponsor.ent Sat Jan 10 22:04:15 2015 (r276932) +++ head/release/doc/share/xml/sponsor.ent Sat Jan 10 22:04:18 2015 (r276933) @@ -23,6 +23,7 @@ <!ENTITY google "Google"> +<!ENTITY limelight "Limelight Networks"> <!ENTITY lsi "LSI"> <!ENTITY netgate "Netgate">
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