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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