New release notes: ULE 2.0, UNIX domain locking changes, driver

ABI/API change for interrupt filtering, zs driver gone, npe(4) (+MFC),
bpf(4) directions, IPv6 multicast forwarding loadable, setfacl(1) -h.

release/doc/en_US.ISO8859-1/relnotes/article.sgml

@@ -356,6 +356,11 @@
     <para>&os; now supports concurrent &man.read.2;/&man.readv.2;
       access to a file.</para>
 
+    <para>The ULE process scheduler has been revised to improve its
+      behavior, in particular interactivity under load.  This
+      implementation can commonly be referred to as <quote>ULE
+      2.0</quote>.</para>
+
     <para>The experimental CORE process scheduler has been added,
       enabled with the <literal>options SCHED_CORE</literal> kernel
       configuration option.  It is forked from the &man.sched.ule.4;
@@ -437,6 +442,18 @@
       <ulink url="http://www.FreeBSD.org/platforms/xbox.html"></ulink>.
       &merged; </para>
 
+    <para>The locking strategy for UNIX domain sockets has been
+      revised to improve concurrency; this change has yielded
+      substantial performance improvements on various SMP workloads
+      (in particular, MySQL on 8-way &arch.amd64; systems) with little
+      or no measured overhead on UP systems.</para>
+
+    <para>Several minor but widespread changes to the Newbus API have
+      been made In order to support some on-going work with interrupt
+      filtering.  Because this change also breaks the kernel ABI, all
+      third-party device drivers will need to be modified and
+      recompiled.</para>
+
     <sect3 id="boot">
       <title>Boot Loader Changes</title>
 
@@ -573,6 +590,9 @@
       <para>The &man.uart.4; driver now supports LOM (Lights Out Management)
 	and RSC (Remote System Control) devices as consoles.</para>
 
+      <para>The zs driver has been removed.  Its functionality
+	has been superceded by that of the &man.uart.4; driver.</para>
+
       <para>[&arch.i386;] A new loader tunable
 	<varname>hw.apic.enable_extint</varname> has been added.
 	This tunable can be used to disable masking of the ExtINT pin on the first
@@ -729,6 +749,10 @@
 	  Ethernet devices, has been added, originally from
 	  OpenBSD.</para>
 
+	<para>[&arch.arm;] The &man.npe.4; driver, which supports the
+	   Intel XScale Network Processing Engine, has been
+	   added. &merged;</para>
+
 	<para>The &man.nve.4; driver has been updated to version 1.0-0310
 	  (23-Nov-2005).  It also now has &man.altq.4; support. &merged;</para>
 
@@ -810,6 +834,11 @@
         &man.bpf.4; listeners now all have identical
         timestamps. &merged;</para>
 
+      <para>The &man.bpf.4; device now supports several new
+	&man.ioctl.2; calls to allow examining inbound vs. outbound
+	packets, as well as packets that have been injected onto the
+	network.</para>
+
       <para>The bridge(4) driver has been removed from the tree.  Its
 	functionality has been completely replaced by
 	&man.if.bridge.4;.</para>
@@ -847,6 +876,9 @@
 	This feature can be re-enabled by using a new sysctl variable
 	<varname>net.inet6.ip6.mcast_pmtu</varname>.  &merged;</para>
 
+      <para>IPv6 multicast forwarding is now dynamically loadable, via
+	the <filename>ip_mroute.ko</filename> module.</para>
+
       <para>IPv6 link-local addresses are now enabled only
 	if <varname>ipv6_enable</varname> is set in &man.rc.conf.5;.
 	&merged;</para>
@@ -1602,6 +1634,9 @@ geli_da1s3a_keyfile0_name="/boot/keys/da1s3a.key"</programlisting>
       incorrect calculation of pattern space length in some cases
       has been fixed.</para>
 
+    <para>The <option>-h</option> flag to &man.setfacl.1; now properly
+      sets the ACL on a symbolic link, not the link target.</para>
+
     <para>The &man.sh.1; utility now supports a <literal>times</literal>
       built-in command. &merged;</para>