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

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   4 <!ENTITY % release PUBLIC "-//FreeBSD//ENTITIES Release Specification//EN" "release.ent">
   5  %release;
   6 <!ENTITY % sponsor PUBLIC "-//FreeBSD//ENTITIES Sponsor Specification//EN" "sponsor.ent">
   7  %sponsor;
   8 <!ENTITY % vendor PUBLIC "-//FreeBSD//ENTITIES Vendor Specification//EN" "vendor.ent">
   9  %vendor;
  10 <!ENTITY security SYSTEM "../../share/xml/security.xml">
  11 <!ENTITY errata SYSTEM "../../share/xml/errata.xml">
  12 ]>
  13 <article xmlns="http://docbook.org/ns/docbook"
  14   xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
  15
  16   <info>
  17     <title>&os; &release.current; Release Notes</title>
  18
  19     <author>
  20       <orgname>The &os; Project</orgname>
  21     </author>
  22
  23     <pubdate>$FreeBSD$</pubdate>
  24
  25     <!-- Last rev: 278934 -->
  26
  27     <copyright>
  28       <year>2015</year>
  29       <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
  30         Project</holder>
  31     </copyright>
  32
  33     <legalnotice xml:id="trademarks" role="trademarks">
  34       &tm-attrib.freebsd;
  35       &tm-attrib.ibm;
  36       &tm-attrib.ieee;
  37       &tm-attrib.intel;
  38       &tm-attrib.sparc;
  39       &tm-attrib.general;
  40     </legalnotice>
  41
  42     <abstract>
  43       <para>The release notes for &os; &release.current; contain
  44         a summary of the changes made to the &os; base system on the
  45         &release.branch; development line.  This document lists
  46         applicable security advisories that were issued since the last
  47         release, as well as significant changes to the &os; kernel and
  48         userland.  Some brief remarks on upgrading are also
  49         presented.</para>
  50     </abstract>
  51   </info>
  52
  53   <sect1 xml:id="intro">
  54     <title>Introduction</title>
  55
  56     <para>This document contains the release notes for &os;
  57       &release.current;.  It describes recently added, changed, or
  58       deleted features of &os;.  It also provides some notes on
  59       upgrading from previous versions of &os;.</para>
  60
  61     <para releasetype="current">The &release.type; distribution to
  62       which these release notes apply represents the latest point
  63       along the &release.branch; development branch since
  64       &release.branch; was created.  Information regarding pre-built,
  65       binary &release.type; distributions along this branch can be
  66       found at <uri
  67         xlink:href="&release.url;">&release.url;</uri>.</para>
  68
  69     <para releasetype="snapshot">The &release.type; distribution to
  70       which these release notes apply represents a point along the
  71       &release.branch; development branch between &release.prev; and
  72       the future &release.next;.  Information regarding pre-built,
  73       binary &release.type; distributions along this branch can be
  74       found at <uri
  75         xlink:href="&release.url;">&release.url;</uri>.</para>
  76
  77     <para releasetype="release">This distribution of &os;
  78       &release.current; is a &release.type; distribution.  It can be
  79       found at <uri xlink:href="&release.url;">&release.url;</uri> or
  80       any of its mirrors.  More information on obtaining this (or
  81       other) &release.type; distributions of &os; can be found in the
  82       <link
  83         xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
  84           &os;</quote> appendix</link> to the <link
  85         xlink:href="&url.books.handbook;/">&os;
  86         Handbook</link>.</para>
  87
  88     <para>All users are encouraged to consult the release errata
  89       before installing &os;.  The errata document is updated with
  90       <quote>late-breaking</quote> information discovered late in the
  91       release cycle or after the release.  Typically, it contains
  92       information on known bugs, security advisories, and corrections
  93       to documentation.  An up-to-date copy of the errata for &os;
  94       &release.current; can be found on the &os; Web site.</para>
  95
  96     <para>This document describes the most user-visible new or changed
  97       features in &os; since &release.prev;.  In general, changes
  98       described here are unique to the &release.branch; branch unless
  99       specifically marked as &merged; features.</para>
 100
 101     <para>Typical release note items document recent security
 102       advisories issued after &release.prev;, new drivers or hardware
 103       support, new commands or options, major bug fixes, or
 104       contributed software upgrades.  They may also list changes to
 105       major ports/packages or release engineering practices.  Clearly
 106       the release notes cannot list every single change made to &os;
 107       between releases; this document focuses primarily on security
 108       advisories, user-visible changes, and major architectural
 109       improvements.</para>
 110   </sect1>
 111
 112   <sect1 xml:id="upgrade">
 113     <title>Upgrading from Previous Releases of &os;</title>
 114
 115     <para arch="amd64,i386">Binary upgrades between RELEASE versions
 116       (and snapshots of the various security branches) are supported
 117       using the &man.freebsd-update.8; utility.  The binary upgrade
 118       procedure will update unmodified userland utilities, as well as
 119       unmodified GENERIC kernels distributed as a part of an official
 120       &os; release.  The &man.freebsd-update.8; utility requires that
 121       the host being upgraded have Internet connectivity.</para>
 122
 123     <para>Source-based upgrades (those based on recompiling the &os;
 124       base system from source code) from previous versions are
 125       supported, according to the instructions in
 126       <filename>/usr/src/UPDATING</filename>.</para>
 127
 128     <important>
 129       <para>Upgrading &os; should only be attempted after backing up
 130         <emphasis>all</emphasis> data and configuration files.</para>
 131     </important>
 132   </sect1>
 133
 134   <sect1 xml:id="security-errata">
 135     <title>Security and Errata</title>
 136
 137     <para>This section lists the various Security Advisories and
 138       Errata Notices since &release.prev;.</para>
 139
 140     <sect2 xml:id="security">
 141       <title>Security Advisories</title>
 142
 143       &security;
 144     </sect2>
 145
 146     <sect2 xml:id="errata">
 147       <title>Errata Notices</title>
 148
 149       &errata;
 150     </sect2>
 151   </sect1>
 152
 153   <sect1 xml:id="userland">
 154     <title>Userland</title>
 155
 156     <para>This section covers changes and additions to userland
 157       applications, contributed software, and system utilities.</para>
 158
 159     <sect2 xml:id="userland-config">
 160       <title>Userland Configuration Changes</title>
 161
 162       <para revision="266463">The default &man.newsyslog.conf.5; now
 163         includes files in the
 164         <filename>/etc/newsyslog.conf.d/</filename> and
 165         <filename>/usr/local/etc/newsyslog.conf.d/</filename>
 166         directories by default for &man.newsyslog.8;.</para>
 167
 168       <para revision="270675">The &man.mailwrapper.8; utility has been
 169         updated to use &man.mailer.conf.5; from the
 170         <literal>LOCALBASE</literal> environment variable, which
 171         defaults to <filename class="directory">/usr/local</filename>
 172         if unset.</para>
 173
 174       <para revision="272350">The <literal>MK_ARM_EABI</literal>
 175         &man.src.conf.5; option has been removed.</para>
 176     </sect2>
 177
 178     <sect2 xml:id="userland-programs">
 179       <title>Userland Application Changes</title>
 180
 181       <para revision="258838" contrib="sponsor" sponsor="&ff;,
 182         &google;" sponsorurl="">The &man.casperd.8; daemon has been
 183         added, which provides access to functionality that is not
 184         available in the <quote>capability mode</quote>
 185         sandbox.</para>
 186
 187       <para revision="260594">When unable to load a kernel module with
 188         &man.kldload.8;, a message informing to view output of
 189         &man.dmesg.8; is now printed, opposed to the previous output
 190         <quote>Exec format error.</quote>.</para>
 191
 192       <para revision="260910">Allow &man.pciconf.8; to identify PCI
 193         devices that are attached to a driver to be identified by
 194         their device name instead of just the selector.  Additionally,
 195         an optional device argument to the <literal>-l</literal> flag
 196         to restrict the output to only listing details about a single
 197         device.</para>
 198
 199       <para revision="260913">A new flag, <quote>onifconsole</quote>
 200         has been added to <filename>/etc/ttys</filename>.  This allows
 201         the system to provide a login prompt via serial console if the
 202         device is an active kernel console, otherwise it is equivalent
 203         to <literal>off</literal>.</para>
 204
 205       <para revision="260926">Support for displaying VPD for PCI
 206         devices via &man.pciconf.8; has been added.</para>
 207
 208       <para revision="261498">&man.ping.8; protects against malicious
 209         network packets using the Capsicum framework to drop
 210         privileges.</para>
 211
 212       <para revision="265229">The &man.ps.1; utility has been
 213         updated to include the <literal>-J</literal> flag, used to
 214         filter output by matching &man.jail.8; IDs and names.
 215         Additionally, argument <literal>0</literal> can be used to
 216         <literal>-J</literal> to only list processes running on the
 217         host system.</para>
 218
 219       <para revision="265249">The &man.top.1; utility has been updated
 220         to filter by &man.jail.8; ID or name, in followup to the
 221         &man.ps.1; change in <literal>r265229</literal>.</para>
 222
 223       <para revision="265995">The Blowfish &man.crypt.3; default
 224         format has been changed to
 225         <literal>&dollar;2b&dollar;</literal>.</para>
 226
 227       <para revision="266209">The &man.pmcstat.8; utility has been
 228         updated to include a new flag, <literal>-l</literal>, which
 229         ends event collection after the specified number of
 230         seconds.</para>
 231
 232       <para revision="270745">The &man.ps.1; utility has been updated
 233         to include a new keyword, <quote>tracer</quote>, which
 234         displays the <acronym>PID</acronym> of the tracing
 235         process.</para>
 236
 237       <para revision="271482">Support for adding empty partitions has
 238         been added to the &man.mkimg.1; utility.</para>
 239
 240       <para revision="272166">The &man.primes.6; utility has been
 241         updated to correctly enumerate prime numbers between
 242         <literal>4295098369</literal> and
 243         <literal>3825123056546413050</literal>, which prior to this
 244         change, it would be possible for returned values to be
 245         incorrectly identified as prime numbers.</para>
 246
 247       <para revision="272198">The &man.mkimg.1; utility has been
 248         updated to include three options used to print information
 249         about &man.mkimg.1; itself:</para>
 250
 251       <informaltable frame="none" pgwide="0">
 252         <tgroup cols="2">
 253           <colspec colwidth="1*"/>
 254           <colspec colwidth="1*"/>
 255           <thead>
 256             <row>
 257               <entry>Option</entry>
 258               <entry>Output</entry>
 259             </row>
 260           </thead>
 261
 262           <tbody>
 263             <row>
 264               <entry><literal>--version</literal></entry>
 265               <entry>The current version of the &man.mkimg.1;
 266                 utility</entry>
 267             </row>
 268
 269             <row>
 270               <entry><literal>--formats</literal></entry>
 271               <entry>The disk image file formats supported by
 272                 &man.mkimg.1;</entry>
 273             </row>
 274
 275             <row>
 276               <entry><literal>--schemes</literal></entry>
 277               <entry>The partition schemes supported by
 278                 &man.mkimg.1;</entry>
 279             </row>
 280           </tbody>
 281         </tgroup>
 282       </informaltable>
 283
 284       <para revision="272488">Userland &man.ctf.5; support in
 285         &man.dtrace.1; has been added.  With this change,
 286         &man.dtrace.1; is able to resolve type info for function and
 287         <acronym>USDT</acronym> probe arguments, and function return
 288         values.</para>
 289
 290       <para revision="274960">The &man.elfdump.1; utility has been
 291         updated to support capability mode provided by
 292         &man.capsicum.4;.</para>
 293
 294       <para revision="275680" contrib="sponsor" sponsor="&ff;">The
 295         &man.fstyp.8; utility has been added, which is used to
 296         determine the filesystem on a specified device.</para>
 297
 298       <para revision="276881">The <literal>libedit</literal> library
 299         has been updated to support <acronym>UTF</acronym>-8, which
 300         additionally provides unicode support to &man.sh.1;.</para>
 301
 302       <para revision="277166" arch="powerpc">The &man.ptrace.2; system
 303         call has been updated include support for Altivec registers on
 304         &os;/&arch.powerpc;.</para>
 305
 306       <para revision="278320">A new device control utility,
 307         &man.devctl.8; has been added, which allows making
 308         administrative changes to individual devices, such as
 309         attaching and detaching drivers, and enabling and disabling
 310         devices.  The &man.devctl.8; utility uses the new
 311         &man.devctl.3; library.</para>
 312     </sect2>
 313
 314     <sect2 xml:id="userland-contrib">
 315       <title>Contributed Software</title>
 316
 317       <para revision="258884" contrib="sponsor"
 318         sponsor="&darpa_afrl;">&man.lldb.1; has been updated to
 319         upstream snapshot version r196259.</para>
 320
 321       <para revision="259626">Timezone data files have been updated to
 322         version 2013i.</para>
 323
 324       <para revision="260445">&man.byacc.1; has been updated to
 325         version 20140101.</para>
 326
 327       <para revision="261071">&man.jemalloc.3; has been updated to
 328         version 3.5.0.</para>
 329
 330       <para revision="261212"><application>bmake</application> has
 331         been updated to version 20140101.</para>
 332
 333       <para revision="261283"><application>libc++</application> has
 334         been updated to version 3.4.</para>
 335
 336       <para revision="261320"><application>OpenSSH</application> has
 337         been updated to 6.5p1.</para>
 338
 339       <para revision="261344"><application>mdocml</application> has
 340         been updated to version 1.12.3.</para>
 341
 342       <para revision="261991"><application>LLVM</application> and
 343         <application>Clang</application> have been updated to
 344         version 3.4.</para>
 345
 346       <para revision="266527"
 347         role="merged"><application>Sendmail</application> has been
 348         updated from 8.14.7 to 8.14.9.</para>
 349
 350       <para revision="276577"><application>file</application> has been
 351         updated to version 5.22.</para>
 352
 353       <para revision="275718">The <application>binutils</application>
 354         suite of utilities has been updated to include upstream
 355         patches that add new relocations for &arch.powerpc;
 356         support.</para>
 357
 358       <para revision="276398" contrib="sponsor" sponsor="&ff;">The
 359         <application>ELF Tool Chain</application> has been updated to
 360         upstream revision r3136.</para>
 361
 362       <para revision="276551">The <application>texinfo</application>
 363         utility and <literal>info</literal> pages were removed from
 364         the base system.  The <filename
 365           role="package">print/texinfo</filename> port should be
 366         installed on systems where <literal>info</literal> pages are
 367         needed.</para>
 368
 369       <para revision="276796" contrib="sponsor" sponsor="&ff;">The ELF
 370         object manipulation tools
 371         <application>addr2line</application>,
 372         <application>elfcopy (strip)</application>,
 373         <application>nm</application>,
 374         <application>size</application>, and
 375         <application>strings</application> were switched to the
 376         versions from the ELF Tool Chain project.</para>
 377
 378       <para revision="276881">The <literal>libedit</literal> library
 379         has been updated to include <acronym>UTF-8</acronym> support,
 380         adding <acronym>UTF-8</acronym> support to the &man.sh.1;
 381         shell.</para>
 382
 383       <para revision="277270"><application>OpenSSL</application> has
 384         been updated to version 1.0.1l.</para>
 385
 386       <para revision="278433">The &man.xz.1; utility has been udpated
 387         to version 5.2.0.</para>
 388
 389       <para revision="278433">The &man.xz.1; utility has been updated
 390         to support multi-threaded compression.</para>
 391     </sect2>
 392
 393     <sect2 xml:id="userland-installer">
 394       <title>Installation and Configuration Tools</title>
 395
 396       <para revision="271539">The &man.bsdinstall.8; partition editor
 397         and &man.sade.8; utility have been updated to include native
 398         <acronym>ZFS</acronym> support.</para>
 399
 400       <para revision="272274">The &os; installation utility,
 401         &man.bsdinstall.8;, has been updated to set the
 402         <literal>canmount</literal> &man.zfs.8; property to
 403         <literal>off</literal> for the <filename
 404           class="directory">/var</filename> dataset, preventing the
 405         contents of directories within <filename
 406           class="directory">/var</filename> from conflicting when
 407         using multiple boot environments, such as that provided by
 408         <filename role="package">sysutils/beadm</filename>.</para>
 409
 410       <para revision="274394">The &man.bsdconfig.8; utility has been
 411         updated to skip the initial &man.tzsetup.8;
 412         <acronym>UTC</acronym> versus wall-clock time prompt when run
 413         in a virtual machine, determined when the
 414         <literal>kern.vm_guest</literal> &man.sysctl.8; is set to
 415         <literal>1</literal>.</para>
 416
 417       <para revision="275874">The &man.bsdinstall.8; utility has been
 418         updated to use the new &man.dpv.3; library to display progress
 419         when extracting the &os; distributions.</para>
 420     </sect2>
 421
 422     <sect2 xml:id="userland-rc">
 423       <title><filename class="directory">/etc/rc.d</filename>
 424         Scripts</title>
 425
 426       <para revision="270676">The &man.rc.8; subsystem has been
 427         updated to allow configuring services in <filename
 428           class="directory">&dollar;{LOCALBASE}/etc/rc.conf.d/</filename>.
 429         If <literal>LOCALBASE</literal> is unset, it defaults to
 430         <filename class="directory">/usr/local</filename>.</para>
 431
 432       <para revision="275299">The <filename>mrouted</filename>
 433         &man.rc.8; script has been removed from the base system.  An
 434         equivalent script is available from the <filename
 435           role="package">net/mrouted</filename> port.</para>
 436     </sect2>
 437
 438     <sect2 xml:id="userland-periodic">
 439       <title><filename class="directory">/etc/periodic</filename>
 440         Scripts</title>
 441
 442       <para revision="271321">The daily &man.periodic.8; script
 443         <filename>110.clean-tmps</filename> has been updated to avoid
 444         crossing filesystem mount boundaries when cleaning files in
 445         <filename class="directory">/tmp</filename>.</para>
 446     </sect2>
 447
 448     <sect2 xml:id="userland-libraries">
 449       <title>Runtime Libraries and API</title>
 450
 451       <para revision="268461">The &man.readline.3; library is now
 452         statically linked in software within the base system, and the
 453         shared library is no longer installed, allowing the Ports
 454         Collection to use a modern version of the library.</para>
 455
 456       <para revision="272273">The &man.strptime.3; library has been
 457         updated to add support for <acronym>POSIX</acronym>-2001
 458         features <literal>%U</literal> and
 459         <literal>%W</literal>.</para>
 460
 461       <para revision="272842,272848" contrib="sponsor"
 462         sponsor="&ff;">The &man.dl.iterate.phdr.3; library has been
 463         changed to always return the path name of the
 464         <acronym>ELF</acronym> object in the
 465         <literal>dlpi_name</literal> structure member.</para>
 466
 467       <para revision="273806" contrib="sponsor" sponsor="&chelsio;">A
 468         userland library for Chelsio Terminator 5 based iWARP cards
 469         has been added, allowing userland <acronym>RDMA</acronym>
 470         applications to work over compatible
 471         <acronym>NIC</acronym>s.</para>
 472
 473       <para revision="274987">The &man.gpio.3; library has been added,
 474         providing a wrapper around the &man.gpio.4; kernel
 475         interface.</para>
 476
 477       <para revision="277610">The <literal>futimens()</literal> and
 478         <literal>utimensat()</literal> system calls have been
 479         added.  See &man.utimensat.2; for more information.</para>
 480
 481       <para revision="278934">The &man.elf.3; compile-time dependency
 482         has been removed from <filename>dtri.o</filename>, which
 483         allows adding <application>DTrace</application> probes to
 484         userland applications and libraries without also linking
 485         against &man.elf.3;.</para>
 486     </sect2>
 487
 488     <sect2 xml:id="userland-abi">
 489       <title>ABI Compatibility</title>
 490
 491       <para revision="271982">The &linux; compatibility version has
 492         been updated to <literal>2.6.18</literal>.  The
 493         <literal>compat.linux.osrelease</literal> &man.sysctl.8; is
 494         evaluated when building the <filename
 495           role="package">emulators/linux-c6</filename> and related
 496         ports.</para>
 497     </sect2>
 498   </sect1>
 499
 500   <sect1 xml:id="kernel">
 501     <title>Kernel</title>
 502
 503     <para>This section covers changes to kernel configurations, system
 504       tuning, and system control parameters that are not otherwise
 505       categorized.</para>
 506
 507     <sect2 xml:id="kernel-bugfix">
 508       <title>Kernel Bug Fixes</title>
 509
 510       <para revision="265876">A kernel bug that inhibited proper
 511         functionality of the <literal>dev.cpu.0.freq</literal>
 512         &man.sysctl.8; on &intel; processors with Turbo
 513         Boost&nbsp;&trade; enabled has been fixed.</para>
 514
 515       <para revision="271697" arch="powerpc">Support for
 516         &man.dtrace.1; stack tracing has been fixed for
 517         &os;/&arch.powerpc;, using the <literal>trapexit()</literal>
 518         and <literal>asttrapexit()</literal> functions instead of
 519         checking within addressed kernel space.</para>
 520
 521       <para revision="272089">A bug in &man.ipfw.4; that could
 522         potentially lead to a kernel panic when using &man.dummynet.4;
 523         at layer 2 has been fixed.</para>
 524     </sect2>
 525
 526     <sect2 xml:id="kernel-config">
 527       <title>Kernel Configuration</title>
 528
 529       <para revision="266531">The <literal>IMAGACT_BINMISC</literal>
 530         kernel configuration option has been enabled by default,
 531         which enables application execution through emulators, such
 532         as <application>Qemu</application>.</para>
 533
 534       <para revision="268045">The <literal>VT</literal> kernel
 535         configuration file has been removed, and the &man.vt.4;
 536         driver is included in the <literal>GENERIC</literal> kernel.
 537         To enable &man.vt.4;, enter <literal>set kern.vty=vt</literal>
 538         at the &man.loader.8; prompt during boot, or add
 539         <literal>kern.vty=vt</literal> to &man.loader.conf.5; and
 540         reboot the system.</para>
 541
 542       <para revision="277904">The &man.config.8; utility has been
 543         updated to allow using a non-standard <filename
 544           class="directory">src/</filename> tree, specified as an
 545         argument to the <literal>-s</literal> flag.</para>
 546
 547       <para revision="277990" arch="powerpc64">The
 548         &os;/&arch.powerpc64; kernel now builds as
 549         a position-independent executable, allowing the kernel to be
 550         loaded into and run from any physical or virtual
 551         address.</para>
 552
 553       <important>
 554         <para>This change requires an update to &man.loader.8;.
 555           The userland and kernel must be updated before rebooting the
 556           system.</para>
 557       </important>
 558     </sect2>
 559
 560     <sect2 xml:id="kernel-sysctl">
 561       <title>System Tuning and Controls</title>
 562
 563       <para revision="275140" contrib="sponsor" sponsor="&ff;">The
 564         &man.hwpmc.4; default and maximum callchain depths have been
 565         increased.  The default has been increased from 16 to 32, and
 566         the maximum increased from 32 to 128.</para>
 567     </sect2>
 568   </sect1>
 569
 570   <sect1 xml:id="drivers">
 571     <title>Devices and Drivers</title>
 572
 573     <para>This section covers changes and additions to devices and
 574       device drivers since &release.prev;.</para>
 575
 576     <sect2 xml:id="drivers-device">
 577       <title>Device Drivers</title>
 578
 579       <para revision="260903">Support for GPS ports has been added to
 580         &man.uhso.4;.</para>
 581
 582       <para revision="265132">The &man.full.4; device has been added,
 583         and the <literal>lindev(4)</literal> device has been removed.
 584         Prior to this change, <literal>lindev(4)</literal> provided
 585         only the <filename>/dev/full</filename> character device,
 586         returning <literal>ENOSPC</literal> on write attempts.  As
 587         this device is not specific to &linux;, a native &os; version
 588         has been added.</para>
 589
 590       <para revision="271705">Hardware context support has been
 591         added to the <literal>drm/i915</literal> driver, adding
 592         support for <application>Mesa</application> 9.2 and
 593         later.</para>
 594
 595       <para revision="273178">The &man.vt.4; driver has been updated,
 596         replacing the bitmapped <literal>kern.vt.spclkeys</literal>
 597         &man.sysctl.8; with individual
 598         <literal>kern.vt.kbd_*</literal> variants.</para>
 599
 600       <para revision="273598">The &man.hpet.4; driver has been updated
 601         to create a
 602         <filename>/dev/hpet<replaceable>N</replaceable></filename>
 603         device, providing access to <acronym>HPET</acronym> from
 604         userspace.</para>
 605     </sect2>
 606
 607     <sect2 xml:id="drivers-storage">
 608       <title>Storage Drivers</title>
 609
 610       <para revision="265236" contrib="sponsor"
 611         sponsor="&lsi;, &spectralogic;" sponsorurl="">The &man.mpr.4;
 612         device has been added, providing support for LSI Fusion-MPT
 613         3 12Gb SCSI/SATA controllers.</para>
 614
 615       <para revision="265555" contrib="sponsor"
 616           sponsor="&lsi;">The &man.mrsas.4; driver has been added,
 617         providing support for LSI MegaRAID SAS controllers.  The
 618         &man.mfi.4; driver will attach to the controller, by default.
 619         To enable &man.mrsas.4; add
 620         <literal>hw.mfi.mrsas_enable=1</literal> to
 621         <filename>/boot/loader.conf</filename>, which turns off
 622         &man.mfi.4; device probing.</para>
 623
 624       <note>
 625         <para>At this time, the &man.mfiutil.8; utility and the &os;
 626           version of <application>MegaCLI</application> and
 627           <application>StorCli</application> do not work with
 628           &man.mrsas.4;.</para>
 629       </note>
 630
 631       <para revision="275461" contrib="sponsor" sponsor="&ix;">The
 632         &man.ctl.4; subsystem has been updated, increasing the ports
 633         limit from <literal>128</literal> to <literal>256</literal>,
 634         and <acronym>LUN</acronym> limit from <literal>256</literal>
 635         to <literal>1024</literal>.</para>
 636
 637       <para revision="276526">The <literal>asr(4)</literal> driver has
 638         been removed, and is no longer supported.</para>
 639     </sect2>
 640
 641     <sect2 xml:id="drivers-network">
 642       <title>Network Drivers</title>
 643
 644       <para revision="258830">Support for Broadcom chipsets BCM57764,
 645         BCM57767, BCM57782, BCM57786 and BCM57787 has been added to
 646         &man.bge.4;.</para>
 647
 648       <para revision="260448">Support for the &intel; Centrino&trade;
 649         Wireless-N 135 chipset has been added.</para>
 650
 651       <para revision="260552">Firmware for &intel; Centrino&trade;
 652         Wireless-N 105 devices has been added to the base
 653         system.</para>
 654
 655       <para revision="261975">The deprecated nve(4) driver has been
 656         removed.  Users of NVIDIA nForce MCP network adapters are
 657         advised to use the &man.nfe.4; driver instead, which has been
 658         the default driver for this hardware since
 659         &os;&nbsp;7.0.</para>
 660
 661       <para revision="264601" contrib="sponsor"
 662         sponsor="&darpa_afrl;">The <literal>if_nf10bmac(4)</literal>
 663         device has been added, providing support for NetFPGA-10G
 664         Embedded CPU Ethernet Core.</para>
 665
 666       <note>
 667         <para>The <literal>if_nf10bmac(4)</literal> driver operates on
 668           the FPGA, and is not suited for the PCI host
 669           interface.</para>
 670       </note>
 671
 672       <para revision="265348" contrib="sponsor"
 673         sponsor="&netgate;">The &man.ath.hal.4; driver has been
 674         updated to support the Atheros AR1111 chipset.</para>
 675
 676       <para revision="266770">Support for the &intel; Centrino&trade;
 677         Wireless-N 105 chipset has been added.</para>
 678
 679       <para revision="266757" contrib="sponsor"
 680         sponsor="&chelsio;">Support for the &man.cxgbe.4; Terminator
 681         5 (T5) 10G/40G cards has been added to &man.netmap.4;.</para>
 682
 683       <para revision="272730">The &man.alc.4; driver has been updated
 684         to support AR816x and AR817x ethernet controllers.</para>
 685
 686       <para revision="273331">The &man.vxlan.4; driver has been added,
 687         which creates a virtual Layer 2 (Ethernet) network overlaid in
 688         a Layer 3 (IP/UDP) network.  The &man.vxlan.4; driver is
 689         analogous to &man.vlan.4;, but is designed to be better suited
 690         for large, multiple-tenant datacenter environments.</para>
 691
 692       <para revision="274246" contrib="sponsor" sponsor="&yandex;">The
 693         &man.gre.4; driver has been significantly overhauled, and has
 694         been split into two separate modules, &man.gre.4; and
 695         &man.me.4;.</para>
 696     </sect2>
 697   </sect1>
 698
 699   <sect1 xml:id="hardware">
 700     <title>Hardware Support</title>
 701
 702     <para>This section covers general hardware support for physical
 703       machines, hypervisors, and virtualization environments, as well
 704       as hardware changes and updates that do not otherwise fit in
 705       other sections of this document.</para>
 706
 707     <sect2 xml:id="hardware-support">
 708       <title>Hardware Support</title>
 709
 710       <para revision="268303">The &man.asmc.4; driver has been
 711         updated to support the &apple;&nbsp;MacMini 3,1.</para>
 712
 713       <para revision="268351">Support for &os;/ia64 has been dropped
 714         as of &os;&nbsp;11.</para>
 715
 716       <para revision="274386">An issue that could cause a system to
 717         hang when entering <acronym>ACPI</acronym>
 718         <literal>S3</literal> state (suspend to
 719         <acronym>RAM</acronym>) has been corrected in the &man.acpi.4;
 720         and &man.pci.4; drivers.</para>
 721
 722       <para revision="274733" arch="powerpc">The power management unit
 723         subsystem has been updated to support power button events on
 724         certain &arch.powerpc; hardware, such as aluminum
 725         PowerBook&nbsp;&reg;.</para>
 726
 727       <para revision="275171,275190" arch="powerpc">The &man.hwpmc.4;
 728         driver has been updated to correct performance counter
 729         sampling on G4 (MPC74xxx) and G5 class processors.</para>
 730
 731       <para revision="275732" contrib="sponsor"
 732         sponsor="&ff;,&netgate;">The
 733         <application>OpenCrypto</application> framework has been
 734         updated to include <literal>AES-ICM</literal> and
 735         <literal>AES-GCM</literal> modes, both of which have also been
 736         added to the &man.aesni.4; driver.</para>
 737     </sect2>
 738
 739     <sect2 xml:id="hardware-virtualization">
 740       <title>Virtualization Support</title>
 741
 742       <para revision="260410">Support for the <quote>Virtual Interrupt
 743           Delivery</quote> feature of &intel;&nbsp;VT-x is enabled if
 744         supported by the CPU.  This feature can be disabled by running
 745         <literal>sysctl hw.vmm.vmx.use_apic_vid=0</literal>.
 746         Additionally, to persist this setting across reboots, add
 747         <literal>hw.vmm.vmx.use_apic_vid=0</literal> to
 748         <filename>/etc/sysctl.conf</filename>.</para>
 749
 750       <para revision="260532">Support for <quote>Posted Interrupt
 751           Processing</quote> is enabled if supported by the CPU.  This
 752         feature can be disabled by running <literal>sysctl
 753           hw.vmm.vmx.use_apic_pir=0</literal>.  Additionally, to
 754         persist this setting across reboots, add
 755         <literal>hw.vmm.vmx.use_apic_pir=0</literal> to
 756         <filename>/etc/sysctl.conf</filename>.</para>
 757
 758       <para revision="260582">Unmapped IO support has been added to
 759         &man.virtio_blk.4;.</para>
 760
 761       <para revision="260583">Unmapped IO support has been added to
 762         &man.virtio_scsi.4;.</para>
 763
 764       <para revision="260847">The &man.virtio_random.4; driver has
 765         been added to harvest entropy from the host system.</para>
 766
 767       <para revision="261504">&os;/&arch.i386; guests can be run under
 768         bhyve.</para>
 769
 770       <para revision="267536" contrib="sponsor"
 771         sponsor="&citrix.rd;">Support for running a &os;/&arch.amd64;
 772         <application>Xen</application> guest instance as
 773         <acronym>PVH</acronym> guest has been added.
 774         <acronym>PVH</acronym> mode, short for <quote>Para-Virtualized
 775           Hardware</quote>, uses para-virtualized drivers for boot and
 776         I/O, and uses hardware virtualization extensions for all other
 777         tasks, without the need for emulation.</para>
 778
 779       <para revision="273515">The &man.virtio.console.4; driver has
 780         been added, which provides an interface to VirtIO console
 781         devices through a &man.tty.4; device.</para>
 782     </sect2>
 783
 784     <sect2 xml:id="hardware-arm">
 785       <title>ARM Support</title>
 786
 787       <para revision="260921">The &man.nand.4; device is enabled for
 788         ARM devices by default.</para>
 789
 790       <para revision="273264" arch="armv6">An issue that could cause
 791         instability when detecting <acronym>SD</acronym> cards on the
 792         Raspberry Pi <acronym>SOC</acronym> has been fixed.</para>
 793
 794       <para revision="275963">The <literal>bcm2835_cpufreq</literal>
 795         driver has been added, which supports <acronym>CPU</acronym>
 796         frequency and voltage control on the Raspberry Pi
 797         <acronym>SOC</acronym>.</para>
 798     </sect2>
 799   </sect1>
 800
 801   <sect1 xml:id="storage">
 802     <title>Storage</title>
 803
 804     <para>This section covers changes and additions to file systems
 805       and other storage subsystems, both local and networked.</para>
 806
 807     <sect2 xml:id="storage-general">
 808       <title>General Storage</title>
 809       <para revision="278037" contrib="sponsor" sponsor="&ix;">The
 810         &man.ctl.4; <acronym>LUN</acronym> mapping has been rewritten,
 811         replacing <acronym>iSCSI</acronym>-specific mapping mechanisms
 812         with a new mechanism that works for any port.</para>
 813
 814       <para revision="278354" contrib="sponsor" sponsor="&ix;">The
 815         &man.ctld.8; utility has been updated to allow controlling
 816         non-<acronym>iSCSI</acronym> &man.ctl.4; ports.</para>
 817     </sect2>
 818
 819     <sect2 xml:id="storage-net">
 820       <title>Networked Storage</title>
 821
 822       <para revision="270096" contrib="sponsor" sponsor="&ff;">The new
 823         filesystem automount facility, &man.autofs.5;, has been added.
 824         The new &man.autofs.5; facility is similar to that found in
 825         other &unix;-like operating systems, such as OS&nbsp;X&trade;
 826         and Solaris&trade;.  The &man.autofs.5; facility uses
 827         a &sun;-compatible &man.auto.master.5; configuration file, and
 828         is administered with the &man.automount.8; userland utility,
 829         and the &man.automountd.8; and &man.autounmountd.8;
 830         daemons.</para>
 831     </sect2>
 832
 833     <sect2 xml:id="storage-zfs">
 834       <title>ZFS</title>
 835
 836       <para revision="275748">The <literal>arc_meta_limit</literal>
 837         statistics are now visible through the
 838         <literal>kstat</literal> &man.sysctl.8;.  As a result of this
 839         change, the <literal>vfs.zfs.arc_meta_used</literal>
 840         &man.sysctl.8; has been removed, and replaced with the
 841         <literal>kstat.zfs.misc.arcstats.arc_meta_used</literal>
 842         &man.sysctl.8;.</para>
 843     </sect2>
 844
 845     <sect2 xml:id="storage-geom">
 846       <title>&man.geom.4;</title>
 847
 848       <para revision="267359">Support for the
 849         <literal>disklabel64</literal> partitioning scheme has been
 850         added to &man.gpart.8;.</para>
 851     </sect2>
 852   </sect1>
 853
 854   <sect1 xml:id="boot">
 855     <title>Boot Loader Changes</title>
 856
 857     <para>This section covers the boot loader, boot menu, and other
 858       boot-related changes.</para>
 859
 860     <sect2 xml:id="boot-loader">
 861       <title>Boot Loader Changes</title>
 862
 863       <para revision="274085">The &man.vt.4; driver has been made the
 864         default system console driver.  The &man.syscons.4; driver is
 865         still available, and can be enabled by adding
 866         <literal>kern.vty=sc</literal> in &man.loader.conf.5;.
 867         Alternatively, &man.syscons.4; can be enabled at boot time by
 868         entering <literal>set kern.vty=sc</literal> at the
 869         &man.loader.8; prompt.</para>
 870     </sect2>
 871
 872     <sect2 xml:id="boot-menu">
 873       <title>Boot Menu Changes</title>
 874
 875       <para>&nbsp;</para>
 876     </sect2>
 877   </sect1>
 878
 879   <sect1 xml:id="network">
 880     <title>Networking</title>
 881
 882     <para>This section describes changes that affect networking in
 883       &os;.</para>
 884
 885     <sect2 xml:id="network-protocols">
 886       <title>Network Procols</title>
 887
 888       <para revision="263140">Support for the IPX network transport
 889         protocol has been removed, and will not be supported in
 890         &os;&nbsp;11 and later releases.</para>
 891
 892       <para revision="272720" contrib="sponsor"
 893         sponsor="&limelight;">Support for <acronym>PLPMTUD</acronym>
 894         blackhole detection (<acronym>RFC</acronym> 4821) has been
 895         added to the &man.tcp.4; stack, disabled by default.  New
 896         control tunables have been added:</para>
 897
 898       <informaltable frame="none" pgwide="0">
 899         <tgroup cols="2">
 900           <colspec colwidth="1*"/>
 901           <colspec colwidth="1*"/>
 902           <thead>
 903             <row>
 904               <entry>Tunable</entry>
 905               <entry>Description</entry>
 906             </row>
 907           </thead>
 908
 909           <tbody>
 910             <row>
 911               <entry><literal>net.inet.tcp.pmtud_blackhole_detection</literal></entry>
 912               <entry>Enables or disables <acronym>PLPMTUD</acronym>
 913                 blackhole detection</entry>
 914             </row>
 915
 916             <row>
 917               <entry><literal>net.inet.tcp.pmtud_blackhole_mss</literal></entry>
 918               <entry><acronym>MSS</acronym> to try for IPv4</entry>
 919             </row>
 920
 921             <row>
 922               <entry><literal>net.inet.tcp.v6pmtud_blackhole_mss</literal></entry>
 923               <entry><acronym>MSS to try for IPv6</acronym></entry>
 924             </row>
 925           </tbody>
 926         </tgroup>
 927       </informaltable>
 928
 929       <para>New monitoring &man.sysctl.8;s haven been added:</para>
 930
 931       <informaltable frame="none" pgwide="0">
 932         <tgroup cols="2">
 933           <colspec colwidth="1*"/>
 934           <colspec colwidth="1*"/>
 935           <thead>
 936             <row>
 937               <entry>Tunable</entry>
 938               <entry>Description</entry>
 939             </row>
 940           </thead>
 941
 942           <tbody>
 943             <row>
 944               <entry><literal>net.inet.tcp.pmtud_blackhole_activated</literal></entry>
 945               <entry>Number of times the code was activated to attempt
 946                 downshifting the <acronym>MSS</acronym></entry>
 947             </row>
 948
 949             <row>
 950               <entry><literal>net.inet.tcp.pmtud_blackhole_min_activated</literal></entry>
 951               <entry>Number of times the blackhole
 952                 <acronym>MSS</acronym> was used in an attempt to
 953                 downshift</entry>
 954             </row>
 955
 956             <row>
 957               <entry><literal>net.inet.tcp.pmtud_blackhole_failed</literal></entry>
 958               <entry>Number of times that the blackhole failed to
 959                 connect after downshifting the
 960                 <acronym>MSS</acronym></entry>
 961             </row>
 962           </tbody>
 963         </tgroup>
 964       </informaltable>
 965     </sect2>
 966   </sect1>
 967
 968   <sect1 xml:id="ports">
 969     <title>Ports Collection and Package Infrastructure</title>
 970
 971     <para>This section covers changes to the &os;&nbsp;Ports
 972       Collection, package infrastructure, and package maintenance and
 973       installation tools.</para>
 974
 975     <sect2 xml:id="ports-infrastructure">
 976       <title>Infrastructure Changes</title>
 977
 978       <para>&nbsp;</para>
 979     </sect2>
 980
 981     <sect2 xml:id="ports-packages ">
 982       <title>Packaging Changes</title>
 983
 984       <para>&nbsp;</para>
 985     </sect2>
 986   </sect1>
 987
 988   <sect1 xml:id="doc">
 989     <title>Documentation</title>
 990
 991     <para>This section covers changes to the &os;&nbsp;Documentation
 992       Project sources and toolchain.</para>
 993
 994     <sect2 xml:id="doc-sources">
 995       <title>Documentation Source Changes</title>
 996
 997       <para>&nbsp;</para>
 998     </sect2>
 999
1000     <sect2 xml:id="doc-toolchain">
1001       <title>Documentation Toolchain Changes</title>
1002
1003       <para>&nbsp;</para>
1004     </sect2>
1005   </sect1>
1006
1007   <sect1 xml:id="releng">
1008     <title>Release Engineering and Integration</title>
1009
1010     <para>This section convers changes that are specific to the
1011       &os;&nbsp;Release Engineering processes.</para>
1012
1013     <sect2 xml:id="releng-changes">
1014       <title>Integration Changes</title>
1015
1016       <para revision="277458" contrib="sponsor" sponsor="&ff;">The
1017         Release Engineering build tools have been updated to include
1018         support for producing virtual machine disk images for various
1019         cloud hosting providers.</para>
1020
1021       <para revision="278926">The Release Engineering build tools have
1022         been updated to use multi-threaded &man.xz.1;.  By default,
1023         the number of &man.xz.1; threads is set to the number of cores
1024         available.</para>
1025     </sect2>
1026   </sect1>
1027 </article>